Carla Nieto MartÍnez

Exercise should no longer be a mere “complement” or a standard recommendation within healthy lifestyle guidelines, say experts. Recent evidence confirms its physiological importance and endorses its beneficial and therapeutic effects on overall health, particularly in the case of obesity and its comorbidities. These findings emphasized the reasons to include exercise prescription in addressing this condition. This conclusion emerged from discussions among experts in Physical Activity and Sports Sciences during the XIX Congress of the Spanish Society for Obesity, where the role of physical exercise as a therapeutic strategy was analyzed from various perspectives.

Javier Butragueño, PhD, coordinator of the Exercise Working Group at the Spanish Society of Obesity, emphasized the need to “reposition” the role of exercise and the message conveyed to the population. “We must move beyond the typical recommendation to ‘just walk’ and rethink this message. When working with patients with obesity, you realize that, for example, the guideline of 10,000 steps per day makes little sense for those who weigh 140 kg, have been sedentary for a long time, and have not reached 2000 daily steps. Clinically, it becomes evident that current recommendations may not align with the needs of these patients,” he said.
 

Precision Focus

Dr. Butragueño highlighted the necessity of shifting the central focus from weight-related variables alone. While weight is crucial, evidence suggests that it should be evaluated along with other strategies, such as nutrition and pharmacology.

“The approach must change to view exercise as a metabolism regulator,” said Dr. Butragueño. “For specialists, this means educating the population about the need to stay active for overall health. This is a disruptive message because the prevailing idea, almost obsessive, associates exercise primarily with weight loss, a completely incorrect approach that can even be detrimental in some cases.”

Dr. Butragueño emphasized the supportive role of physical exercise in interventions for these patients. “Data show that it is both an enhancer and a co-adjuvant in strategies that also include psychology and endocrinology. It should be part of the approach to obesity but individualized and phenotyped to give physical activity the necessary dimension in each specific case.”

As an example of this adaptability in therapeutic strategy, Dr. Butragueño referred to addressing binge eating disorder. “In this case, specialists must acknowledge that sports are a third-line option, always behind the psychologist, who plays a primary role. Exercise is used to enhance the emotions triggered through its practice, considering that many of these patients maintain a very negative relationship with their bodies.”
 

Spanish ‘Prescription Guide’

During his presentation, Dr. Butragueño introduced the positioning document from the Exercise Group of the Spanish Society of Obesity, which is aimed at designing physical activity programs for patients with obesity. He emphasized its importance as a much-needed effort at proposing intervention strategies to guide health professionals and establish a reference framework for collaboration across different approaches to obesity.

Among the noteworthy aspects of the guidelines outlined in this document, Dr. Butragueño highlighted the assessment and classification of physical activity into four levels based on each patient’s physical condition. “This aspect should be studied by the scientific community because ‘humanizing’ exercise prescription by understanding individuals’ needs beyond their BMI is crucial.”

He also discussed the strategy outlined in the document that he said is crucial for implementing an exercise program. “Essentially, it involves two guidelines: First, engage in physical activity for at least 30-60 minutes in what we call zone 2. This includes activities like walking, cycling, or rowing, where one can speak easily with another person or sing without getting out of breath. This is a fundamental part of addressing obesity, as it improves mitochondrial biogenesis, the correct utilization of fatty acids, which is a significant concern in the pathophysiology of obesity and other diseases like cancer.”

The second strategy involves strength training alone or combined with aerobic-cardiovascular exercise. “Studies show that just 20 minutes of strength training 1 day a week for 10 consecutive weeks significantly improves strength levels in sedentary individuals.”

Dr. Butragueño emphasized that to date, there is no doubt that the most effective approach is to combine strength exercises with cardiorespiratory exercises. “This is not only to address obesity but also because, beyond weight impact, this training has proven additional benefits, such as increased oxygenation and improved cognitive capacity.”

Finally, regarding the challenges this shift in focus poses for exercise specialists, Dr. Butragueño pointed out, “Synergies in obesity treatment require sports experts to receive training in other disciplines, elevating our knowledge level and communication with the medical community to emphasize that we are indeed talking about exercise physiology applied to a condition like obesity.”

“In addition, as scientists, we must challenge ourselves to disseminate information at the societal level, surpassing the typical and outdated message of ‘eat less and move more,’ which we know is incorrect. This simplistic formula doesn’t help many patients resolve their issues like fatty liver, diabetes, and other metabolic disorders,” he concluded.
 

Active Breaks

Other topics debated during the congress included the importance of making exercise prescription a de facto reality in clinical practice and the challenge of achieving therapeutic compliance.

According to experts, one of the well-positioned trends in this regard is the concept of “active breaks” or “exercise snacks.” These breaks involve engaging in short-duration, moderate- to high-intensity activities throughout the day or working hours.

César Bustos, a board member of the Spanish Society of Obesity, mentioned that several studies have demonstrated that simple activities like climbing three flights of stairs or engaging in 1-minute training sessions can increase the metabolic equivalent of cardiovascular capacity and cardiorespiratory fitness. This approach could help reduce cardiovascular disease risk and all-cause mortality by 13%-15%.

“Cardiorespiratory fitness is the ability to engage in physical activity. It has been proven to be a more powerful predictor of mortality risk than traditional risk factors such as hypertension, smoking, obesity, hyperlipidemia, and type 2 diabetes,” said Mr. Bustos.

The expert added that these findings on the benefits of exercise snacks are particularly relevant in the current context, where lack of time is the primary obstacle cited by individuals with obesity for not engaging in regular physical activity. In addition, exercise prescription is considered the primary preventive measure for obesity and its associated diseases.

“Exercise is an essential complement to various treatments and strategies aimed at managing obesity and maintaining long-term weight reductions. However, patient compliance with recommended measures to stay active remains low. This deficiency can be overcome with the adoption of exercise snacks or small doses of exercise, which have become the most effective tool for achieving this goal,” he emphasized.

Also, in line with other experts, Mr. Bustos emphasized the importance of combined strength and cardiovascular training within the same session. “Undoubtedly, this is the most effective modality, as recent meta-analyses reflect. There is also a second effective modality for improving cardiometabolic parameters in patients with obesity: Hybrid training, including games, skipping ropes, and various devices.”
 

Exerkines and Poly Pills

Antonio García-Hermoso, PhD, a specialist in physical activity and sports at Navarrabiomed, University Hospital of Navarra in Pamplona, Spain, provided an update on the latest evidence regarding exerkines, which are molecules released during exercise. Research into these molecules attempts to analyze and understand the complex network of interactions between various exercise response systems.

Dr. García-Hermoso said that in the case of obesity and type 2 diabetes, research focuses on how exercise can affect patients’ exerkine levels and how these molecules can affect cardiometabolic control.

“The results demonstrate that these molecules are associated with multiple benefits, including improved insulin sensitivity and glucose homeostasis,” said Dr. García-Hermoso. “Concerning obesity, regular exercise has been shown to reduce interleukin-6 levels, positively affecting inflammation in these patients, also being associated with increased lipolysis and fatty acid utilization.”

Dr. García-Hermoso considered that studying exerkines supports the importance of individualized exercise prescription, like prescription of diet or medications.

He emphasized the importance of intensity, “which is even more crucial than the type of physical activity. Intense exercise activates physiological mechanisms, such as increased blood lactate levels, favoring the inhibition of ghrelin signaling associated with appetite. Therefore, higher exercise intensity leads to more lactate and greater inhibition of post-training hunger.”

“It is essential to understand that exercise is a poly pill with many advantages, and one of them is that even in small amounts, if intensity is increased, health benefits increase considerably,” Dr. García-Hermoso concluded.

Dr. Butragueño, Mr. Bustos, and Dr. García-Hermoso declared no relevant economic conflicts of interest.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Exercise should no longer be a mere “complement” or a standard recommendation within healthy lifestyle guidelines, say experts. Recent evidence confirms its physiological importance and endorses its beneficial and therapeutic effects on overall health, particularly in the case of obesity and its comorbidities. These findings emphasized the reasons to include exercise prescription in addressing this condition. This conclusion emerged from discussions among experts in Physical Activity and Sports Sciences during the XIX Congress of the Spanish Society for Obesity, where the role of physical exercise as a therapeutic strategy was analyzed from various perspectives.

Javier Butragueño, PhD, coordinator of the Exercise Working Group at the Spanish Society of Obesity, emphasized the need to “reposition” the role of exercise and the message conveyed to the population. “We must move beyond the typical recommendation to ‘just walk’ and rethink this message. When working with patients with obesity, you realize that, for example, the guideline of 10,000 steps per day makes little sense for those who weigh 140 kg, have been sedentary for a long time, and have not reached 2000 daily steps. Clinically, it becomes evident that current recommendations may not align with the needs of these patients,” he said.
 

Precision Focus

Dr. Butragueño highlighted the necessity of shifting the central focus from weight-related variables alone. While weight is crucial, evidence suggests that it should be evaluated along with other strategies, such as nutrition and pharmacology.

“The approach must change to view exercise as a metabolism regulator,” said Dr. Butragueño. “For specialists, this means educating the population about the need to stay active for overall health. This is a disruptive message because the prevailing idea, almost obsessive, associates exercise primarily with weight loss, a completely incorrect approach that can even be detrimental in some cases.”

Dr. Butragueño emphasized the supportive role of physical exercise in interventions for these patients. “Data show that it is both an enhancer and a co-adjuvant in strategies that also include psychology and endocrinology. It should be part of the approach to obesity but individualized and phenotyped to give physical activity the necessary dimension in each specific case.”

As an example of this adaptability in therapeutic strategy, Dr. Butragueño referred to addressing binge eating disorder. “In this case, specialists must acknowledge that sports are a third-line option, always behind the psychologist, who plays a primary role. Exercise is used to enhance the emotions triggered through its practice, considering that many of these patients maintain a very negative relationship with their bodies.”
 

Spanish ‘Prescription Guide’

During his presentation, Dr. Butragueño introduced the positioning document from the Exercise Group of the Spanish Society of Obesity, which is aimed at designing physical activity programs for patients with obesity. He emphasized its importance as a much-needed effort at proposing intervention strategies to guide health professionals and establish a reference framework for collaboration across different approaches to obesity.

Among the noteworthy aspects of the guidelines outlined in this document, Dr. Butragueño highlighted the assessment and classification of physical activity into four levels based on each patient’s physical condition. “This aspect should be studied by the scientific community because ‘humanizing’ exercise prescription by understanding individuals’ needs beyond their BMI is crucial.”

He also discussed the strategy outlined in the document that he said is crucial for implementing an exercise program. “Essentially, it involves two guidelines: First, engage in physical activity for at least 30-60 minutes in what we call zone 2. This includes activities like walking, cycling, or rowing, where one can speak easily with another person or sing without getting out of breath. This is a fundamental part of addressing obesity, as it improves mitochondrial biogenesis, the correct utilization of fatty acids, which is a significant concern in the pathophysiology of obesity and other diseases like cancer.”

The second strategy involves strength training alone or combined with aerobic-cardiovascular exercise. “Studies show that just 20 minutes of strength training 1 day a week for 10 consecutive weeks significantly improves strength levels in sedentary individuals.”

Dr. Butragueño emphasized that to date, there is no doubt that the most effective approach is to combine strength exercises with cardiorespiratory exercises. “This is not only to address obesity but also because, beyond weight impact, this training has proven additional benefits, such as increased oxygenation and improved cognitive capacity.”

Finally, regarding the challenges this shift in focus poses for exercise specialists, Dr. Butragueño pointed out, “Synergies in obesity treatment require sports experts to receive training in other disciplines, elevating our knowledge level and communication with the medical community to emphasize that we are indeed talking about exercise physiology applied to a condition like obesity.”

“In addition, as scientists, we must challenge ourselves to disseminate information at the societal level, surpassing the typical and outdated message of ‘eat less and move more,’ which we know is incorrect. This simplistic formula doesn’t help many patients resolve their issues like fatty liver, diabetes, and other metabolic disorders,” he concluded.
 

Active Breaks

Other topics debated during the congress included the importance of making exercise prescription a de facto reality in clinical practice and the challenge of achieving therapeutic compliance.

According to experts, one of the well-positioned trends in this regard is the concept of “active breaks” or “exercise snacks.” These breaks involve engaging in short-duration, moderate- to high-intensity activities throughout the day or working hours.

César Bustos, a board member of the Spanish Society of Obesity, mentioned that several studies have demonstrated that simple activities like climbing three flights of stairs or engaging in 1-minute training sessions can increase the metabolic equivalent of cardiovascular capacity and cardiorespiratory fitness. This approach could help reduce cardiovascular disease risk and all-cause mortality by 13%-15%.

“Cardiorespiratory fitness is the ability to engage in physical activity. It has been proven to be a more powerful predictor of mortality risk than traditional risk factors such as hypertension, smoking, obesity, hyperlipidemia, and type 2 diabetes,” said Mr. Bustos.

The expert added that these findings on the benefits of exercise snacks are particularly relevant in the current context, where lack of time is the primary obstacle cited by individuals with obesity for not engaging in regular physical activity. In addition, exercise prescription is considered the primary preventive measure for obesity and its associated diseases.

“Exercise is an essential complement to various treatments and strategies aimed at managing obesity and maintaining long-term weight reductions. However, patient compliance with recommended measures to stay active remains low. This deficiency can be overcome with the adoption of exercise snacks or small doses of exercise, which have become the most effective tool for achieving this goal,” he emphasized.

Also, in line with other experts, Mr. Bustos emphasized the importance of combined strength and cardiovascular training within the same session. “Undoubtedly, this is the most effective modality, as recent meta-analyses reflect. There is also a second effective modality for improving cardiometabolic parameters in patients with obesity: Hybrid training, including games, skipping ropes, and various devices.”
 

Exerkines and Poly Pills

Antonio García-Hermoso, PhD, a specialist in physical activity and sports at Navarrabiomed, University Hospital of Navarra in Pamplona, Spain, provided an update on the latest evidence regarding exerkines, which are molecules released during exercise. Research into these molecules attempts to analyze and understand the complex network of interactions between various exercise response systems.

Dr. García-Hermoso said that in the case of obesity and type 2 diabetes, research focuses on how exercise can affect patients’ exerkine levels and how these molecules can affect cardiometabolic control.

“The results demonstrate that these molecules are associated with multiple benefits, including improved insulin sensitivity and glucose homeostasis,” said Dr. García-Hermoso. “Concerning obesity, regular exercise has been shown to reduce interleukin-6 levels, positively affecting inflammation in these patients, also being associated with increased lipolysis and fatty acid utilization.”

Dr. García-Hermoso considered that studying exerkines supports the importance of individualized exercise prescription, like prescription of diet or medications.

He emphasized the importance of intensity, “which is even more crucial than the type of physical activity. Intense exercise activates physiological mechanisms, such as increased blood lactate levels, favoring the inhibition of ghrelin signaling associated with appetite. Therefore, higher exercise intensity leads to more lactate and greater inhibition of post-training hunger.”

“It is essential to understand that exercise is a poly pill with many advantages, and one of them is that even in small amounts, if intensity is increased, health benefits increase considerably,” Dr. García-Hermoso concluded.

Dr. Butragueño, Mr. Bustos, and Dr. García-Hermoso declared no relevant economic conflicts of interest.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Exercise should no longer be a mere “complement” or a standard recommendation within healthy lifestyle guidelines, say experts. Recent evidence confirms its physiological importance and endorses its beneficial and therapeutic effects on overall health, particularly in the case of obesity and its comorbidities. These findings emphasized the reasons to include exercise prescription in addressing this condition. This conclusion emerged from discussions among experts in Physical Activity and Sports Sciences during the XIX Congress of the Spanish Society for Obesity, where the role of physical exercise as a therapeutic strategy was analyzed from various perspectives.

Javier Butragueño, PhD, coordinator of the Exercise Working Group at the Spanish Society of Obesity, emphasized the need to “reposition” the role of exercise and the message conveyed to the population. “We must move beyond the typical recommendation to ‘just walk’ and rethink this message. When working with patients with obesity, you realize that, for example, the guideline of 10,000 steps per day makes little sense for those who weigh 140 kg, have been sedentary for a long time, and have not reached 2000 daily steps. Clinically, it becomes evident that current recommendations may not align with the needs of these patients,” he said.
 

Precision Focus

Dr. Butragueño highlighted the necessity of shifting the central focus from weight-related variables alone. While weight is crucial, evidence suggests that it should be evaluated along with other strategies, such as nutrition and pharmacology.

“The approach must change to view exercise as a metabolism regulator,” said Dr. Butragueño. “For specialists, this means educating the population about the need to stay active for overall health. This is a disruptive message because the prevailing idea, almost obsessive, associates exercise primarily with weight loss, a completely incorrect approach that can even be detrimental in some cases.”

Dr. Butragueño emphasized the supportive role of physical exercise in interventions for these patients. “Data show that it is both an enhancer and a co-adjuvant in strategies that also include psychology and endocrinology. It should be part of the approach to obesity but individualized and phenotyped to give physical activity the necessary dimension in each specific case.”

As an example of this adaptability in therapeutic strategy, Dr. Butragueño referred to addressing binge eating disorder. “In this case, specialists must acknowledge that sports are a third-line option, always behind the psychologist, who plays a primary role. Exercise is used to enhance the emotions triggered through its practice, considering that many of these patients maintain a very negative relationship with their bodies.”
 

Spanish ‘Prescription Guide’

During his presentation, Dr. Butragueño introduced the positioning document from the Exercise Group of the Spanish Society of Obesity, which is aimed at designing physical activity programs for patients with obesity. He emphasized its importance as a much-needed effort at proposing intervention strategies to guide health professionals and establish a reference framework for collaboration across different approaches to obesity.

Among the noteworthy aspects of the guidelines outlined in this document, Dr. Butragueño highlighted the assessment and classification of physical activity into four levels based on each patient’s physical condition. “This aspect should be studied by the scientific community because ‘humanizing’ exercise prescription by understanding individuals’ needs beyond their BMI is crucial.”

He also discussed the strategy outlined in the document that he said is crucial for implementing an exercise program. “Essentially, it involves two guidelines: First, engage in physical activity for at least 30-60 minutes in what we call zone 2. This includes activities like walking, cycling, or rowing, where one can speak easily with another person or sing without getting out of breath. This is a fundamental part of addressing obesity, as it improves mitochondrial biogenesis, the correct utilization of fatty acids, which is a significant concern in the pathophysiology of obesity and other diseases like cancer.”

The second strategy involves strength training alone or combined with aerobic-cardiovascular exercise. “Studies show that just 20 minutes of strength training 1 day a week for 10 consecutive weeks significantly improves strength levels in sedentary individuals.”

Dr. Butragueño emphasized that to date, there is no doubt that the most effective approach is to combine strength exercises with cardiorespiratory exercises. “This is not only to address obesity but also because, beyond weight impact, this training has proven additional benefits, such as increased oxygenation and improved cognitive capacity.”

Finally, regarding the challenges this shift in focus poses for exercise specialists, Dr. Butragueño pointed out, “Synergies in obesity treatment require sports experts to receive training in other disciplines, elevating our knowledge level and communication with the medical community to emphasize that we are indeed talking about exercise physiology applied to a condition like obesity.”

“In addition, as scientists, we must challenge ourselves to disseminate information at the societal level, surpassing the typical and outdated message of ‘eat less and move more,’ which we know is incorrect. This simplistic formula doesn’t help many patients resolve their issues like fatty liver, diabetes, and other metabolic disorders,” he concluded.
 

Active Breaks

Other topics debated during the congress included the importance of making exercise prescription a de facto reality in clinical practice and the challenge of achieving therapeutic compliance.

According to experts, one of the well-positioned trends in this regard is the concept of “active breaks” or “exercise snacks.” These breaks involve engaging in short-duration, moderate- to high-intensity activities throughout the day or working hours.

César Bustos, a board member of the Spanish Society of Obesity, mentioned that several studies have demonstrated that simple activities like climbing three flights of stairs or engaging in 1-minute training sessions can increase the metabolic equivalent of cardiovascular capacity and cardiorespiratory fitness. This approach could help reduce cardiovascular disease risk and all-cause mortality by 13%-15%.

“Cardiorespiratory fitness is the ability to engage in physical activity. It has been proven to be a more powerful predictor of mortality risk than traditional risk factors such as hypertension, smoking, obesity, hyperlipidemia, and type 2 diabetes,” said Mr. Bustos.

The expert added that these findings on the benefits of exercise snacks are particularly relevant in the current context, where lack of time is the primary obstacle cited by individuals with obesity for not engaging in regular physical activity. In addition, exercise prescription is considered the primary preventive measure for obesity and its associated diseases.

“Exercise is an essential complement to various treatments and strategies aimed at managing obesity and maintaining long-term weight reductions. However, patient compliance with recommended measures to stay active remains low. This deficiency can be overcome with the adoption of exercise snacks or small doses of exercise, which have become the most effective tool for achieving this goal,” he emphasized.

Also, in line with other experts, Mr. Bustos emphasized the importance of combined strength and cardiovascular training within the same session. “Undoubtedly, this is the most effective modality, as recent meta-analyses reflect. There is also a second effective modality for improving cardiometabolic parameters in patients with obesity: Hybrid training, including games, skipping ropes, and various devices.”
 

Exerkines and Poly Pills

Antonio García-Hermoso, PhD, a specialist in physical activity and sports at Navarrabiomed, University Hospital of Navarra in Pamplona, Spain, provided an update on the latest evidence regarding exerkines, which are molecules released during exercise. Research into these molecules attempts to analyze and understand the complex network of interactions between various exercise response systems.

Dr. García-Hermoso said that in the case of obesity and type 2 diabetes, research focuses on how exercise can affect patients’ exerkine levels and how these molecules can affect cardiometabolic control.

“The results demonstrate that these molecules are associated with multiple benefits, including improved insulin sensitivity and glucose homeostasis,” said Dr. García-Hermoso. “Concerning obesity, regular exercise has been shown to reduce interleukin-6 levels, positively affecting inflammation in these patients, also being associated with increased lipolysis and fatty acid utilization.”

Dr. García-Hermoso considered that studying exerkines supports the importance of individualized exercise prescription, like prescription of diet or medications.

He emphasized the importance of intensity, “which is even more crucial than the type of physical activity. Intense exercise activates physiological mechanisms, such as increased blood lactate levels, favoring the inhibition of ghrelin signaling associated with appetite. Therefore, higher exercise intensity leads to more lactate and greater inhibition of post-training hunger.”

“It is essential to understand that exercise is a poly pill with many advantages, and one of them is that even in small amounts, if intensity is increased, health benefits increase considerably,” Dr. García-Hermoso concluded.

Dr. Butragueño, Mr. Bustos, and Dr. García-Hermoso declared no relevant economic conflicts of interest.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

MADRID — The role of vitamin D in the risk for overweight and obesity has been the subject of multiple studies. Though there’s still not enough evidence to reach a decisive conclusion, several ongoing debates are setting the stage for future research.

Irene Bretón, MD, PhD, discussed these debates in a presentation titled “Vitamin D Deficiency and Obesity: Cause or Consequence?” delivered at the 64th Congress of the Spanish Society of Endocrinology and Nutrition (SEEN). Dr. Bretón is president of the Foundation of the Spanish Society of Endocrinology and Nutrition.

“Vitamin D deficiency can arise from different causes. The percentage that can be attributed to solar radiation is extremely variable. Some studies put it at 80%, while others suggest lower figures. Many diseases have also been associated with vitamin D deficiency or with low vitamin D levels (which are not always at the level of deficiency). Nonetheless, we still have a lot to learn about these associations,” she said.

Dr. Bretón pointed out that many of these studies overlook parathyroid hormone testing. “I also think it’s more appropriate to discuss nutritional status of vitamin D as opposed to serum levels, because these data can be misleading. It would be interesting to focus more on vitamin D metabolism and not just plasma levels.”
 

Vitamin Deficiency 

To answer whether obesity and its complications could be related to low vitamin D levels, Dr. Bretón pointed to this vitamin’s profile in various regions of the world and called attention to the fact that none of the studies on this topic include populations with roughly adequate levels of this vitamin.

“This highlights the prevalence of vitamin D deficiency worldwide. It affects approximately 50% of the population, has been described in all age groups, and affects both men and women — particularly pregnant women and those in menopause — and older adults,” said Dr. Bretón.

She also cited the figures backing this fact: 88% have 25-hydroxyvitamin D levels < 30 ng/mL, 37% have levels < 20 ng/mL, and 7% have levels < 10 ng/mL.

“These percentages have brought us to consider their potential link to the current obesity epidemic. Studies in humans have observed a relationship between low plasma levels and markers for obesity and adiposity. Free 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D are known to be reduced in obesity, and treatments to correct vitamin D deficiency are less effective in people with the disease,” she noted.

Regarding the impact in “the opposite direction,” that is, whether obesity affects the nutritional status of vitamin D, Bretón explained that observational studies have generally found a relationship between overweight and obesity and lower plasma levels of vitamin D. “Data from these studies show that each kg/m² increase in [body mass index (BMI)] is associated with a 1.15% decrease in 25-hydroxyvitamin D. These studies also show that the prevalence of vitamin D deficiency is 35% higher in patients with obesity and 24% higher in those that are overweight compared with individuals of normal weight. A relationship has been observed between vitamin D deficiency and body fat percentage in men and women and in all age groups,” explained Dr. Bretón.

Dr. Bretón noted that the diseases most closely associated with obesity are type 2 diabetes, hypertension, ischemic heart disease, cancer (colon, breast, prostate, and ovarian), inflammatory liver disease, asthma, and inflammatory diseases.
 

Mechanisms Involved

Dr. Bretón reviewed the latest evidence on the mechanisms involved in the relationship between obesity and vitamin D deficiency. “People with obesity may experience less solar exposure (more of their body is covered, or they spend more time indoors), but reduced exposure to the sun is known to have less of an influence on vitamin D levels. Studies where people were given radiation to test how their plasma levels of vitamin D respond have found that there is a smaller effect in people with obesity, and that the effect is inversely correlated with BMI: the higher the BMI, the less vitamin D levels increase under exposure to solar radiation.”

Another mechanism is sequestration in adipose tissue, which is the largest reservoir of vitamin D in the body. Nevertheless, factors such as vitamin D concentration in this tissue, regulation of local metabolism, and vitamin uptake and release are less understood. It is therefore unclear whether this mechanism acts to regulate plasma levels.

“This is why severe vitamin D deficiencies (and deficiencies of other fat-soluble vitamins) that occur after bariatric surgery are often not seen in the first year after surgery but develop much later, when the vitamin that has accumulated in adipose tissue is released as weight is lost,” said Dr. Bretón.

“On the other hand, the volumetric dilution in blood that occurs in relation to total body fat content may explain the variability of plasma levels and the response to treatment. Predictive equations have been described,” she explained.
 

The Prenatal Stage

Dr. Bretón mentioned that the best setting for studying the impact of vitamin D and preventing future obesity is during the initial stages of life, when adipogenesis and fetal programming are occurring.

“Studies in animals have shown how maternal vitamin D deficiency (due to nongenetic or nonepigenetic mechanisms) leads to changes in adipogenesis and programming of adipose reserves. A fetal or perinatal environment with low vitamin D levels programs all these mechanisms differently, and not just adipogenesis and adipocyte differentiation in utero,” she added.

Various mechanisms involved in vitamin D deficiency as a cause of obesity are currently being studied in the prenatal setting. One such mechanism is the interaction between the vitamin D receptor and 1 alpha–hydroxylase, which are present in the adipose tissue and help modulate lipid metabolism.

“The vitamin D receptor is particularly expressed in the early stages of adipocyte differentiation, but its expression drops off as the differentiation process continues. Vitamin D receptor knockout mice have a slender phenotype and are resistant to diet-induced obesity. They also accumulate less fat with age and a high-fat diet,” explained Dr. Bretón.

“However, vitamin D also influences the production of inflammatory adipokines in these early stages of life. It specifically plays a central role in modulating the inflammatory response in adipose tissue. These anti-inflammatory effects appear to be mediated by inhibition of [NF–kappa B] and MAPK signaling pathways. All of this suggests that vitamin D influences both adipogenesis and how the adipose tissue functions,” she added.
 

Weight Loss 

When considering the link between vitamin D and obesity in the context of weight loss, Dr. Bretón explained that studies in this area suggest that weight loss per se is not sufficient to increase serum 25-hydroxyvitamin D. Rather, increased synthesis by the skin or increased dietary intake are the most relevant factors for the nutritional status of this vitamin.

“A recent systematic review looking at the relationship between vitamin D levels and weight loss via caloric restriction and exercise showed a small but significant effect in the sense that weight loss increases vitamin D levels. However, other meta-analyses have not found significant results in this area,” she said.

“In my opinion, these results depend on how long the intervention is performed. If a lot of weight is lost in a short time frame, vitamin D is released into the adipose tissue, a process that doesn’t have any significant impact on the nutritional status of this vitamin. Generally, the effect of this relationship is small (1.5 ng/mL) and of little clinical relevance. Moreover, many systematic reviews have analyzed this relationship following bariatric surgery and have also come up with inconclusive results,” Dr. Bretón added.

What role do treatments play in correcting vitamin D deficiency? Dr. Bretón explained that studies that have examined how fortified foods affect obesity show that though these foods don’t cause significant weight changes, they do affect fat mass and waist circumference. This finding suggests that fortified foods have some impact, not necessarily on weight but perhaps on adiposity.

“To rightly value all this data, one has to pay special attention to the environment and the context where the research took place (children or adults, baseline vitamin D levels, and so on). If fortified foods are directly supplemented with cholecalciferol, the results are very inconsistent. We therefore cannot say that treatment with vitamin D can reduce body weight and adiposity,” she said.

When it comes to the complications from obesity, studies of vitamin D supplementation, cancer, and cardiovascular disease did not find any beneficial effect on preventing these pathologies.

For obesity’s impact on vitamin D supplementation, it is known that the levels achieved are lower in patients with obesity compared with patients of normal weight. “Compared with other interventions, however, these levels (15.27 ng/mL) are clinically relevant,” she noted.
 

Future Directions

Dr. Bretón explained that all this evidence has revealed many debates regarding the association of vitamin D levels with obesity. “For example, it appears that obesity could predict low vitamin D levels (not necessarily a deficiency). In turn, these low levels could cause obesity, especially during embryonic development, when programming of adipocyte physiology is taking place.”

Dr. Bretón sees many confounding factors that will need to be elucidated in the future. “One factor is that we aren’t sure whether the patient we’re seeing has vitamin D deficiency or if other factors are in play, like time since weight loss, laboratory technique used to measure vitamin D, nutritional status, geographic location, time of year when the test is performed, et cetera. You also have to assess other factors having to do with obesity, like how adiposity is being measured and whether BMI reflects that adiposity.”

Last, the expert reviewed the major research efforts underway that are based on evidence that vitamin D is associated with insulin resistance. Studies are being performed on pancreatic function, the role of vitamin D levels in ovarian physiology related to insulin resistance (specifically, the role of hyperandrogenism), adipose tissue (vitamin D receptor expression, volumetric dilution), and other components of metabolic syndrome to determine how this vitamin’s status influences the renin-angiotensin system, apoptosis, and cardiovascular risk.

“There is also plenty of research going on surrounding metabolic liver disease, which has a lot to do with the microbiota. So, they’re studying the relationship between vitamin D and dysbiosis, especially regarding local immunomodulation in the gut in relation to the microbiota,” she added.

Another area of research is cancer, focusing primarily on analyzing the nutritional status of vitamin D in relation to the microbiome and how this status may affect the therapeutic effect of chemotherapy and radiation therapy. “It would be interesting to find out whether the effect of immunotherapy varies depending on the patient’s vitamin D status,” concluded Dr. Bretón.

Dr. Bretón’s lecture at the 64th Congress of the SEEN was sponsored by the Foundation for Analysis and Social Studies (FAES).

This article was translated from the Medscape Spanish edition.  A version of this article appeared on Medscape.com.

MADRID — The role of vitamin D in the risk for overweight and obesity has been the subject of multiple studies. Though there’s still not enough evidence to reach a decisive conclusion, several ongoing debates are setting the stage for future research.

Irene Bretón, MD, PhD, discussed these debates in a presentation titled “Vitamin D Deficiency and Obesity: Cause or Consequence?” delivered at the 64th Congress of the Spanish Society of Endocrinology and Nutrition (SEEN). Dr. Bretón is president of the Foundation of the Spanish Society of Endocrinology and Nutrition.

“Vitamin D deficiency can arise from different causes. The percentage that can be attributed to solar radiation is extremely variable. Some studies put it at 80%, while others suggest lower figures. Many diseases have also been associated with vitamin D deficiency or with low vitamin D levels (which are not always at the level of deficiency). Nonetheless, we still have a lot to learn about these associations,” she said.

Dr. Bretón pointed out that many of these studies overlook parathyroid hormone testing. “I also think it’s more appropriate to discuss nutritional status of vitamin D as opposed to serum levels, because these data can be misleading. It would be interesting to focus more on vitamin D metabolism and not just plasma levels.”
 

Vitamin Deficiency 

To answer whether obesity and its complications could be related to low vitamin D levels, Dr. Bretón pointed to this vitamin’s profile in various regions of the world and called attention to the fact that none of the studies on this topic include populations with roughly adequate levels of this vitamin.

“This highlights the prevalence of vitamin D deficiency worldwide. It affects approximately 50% of the population, has been described in all age groups, and affects both men and women — particularly pregnant women and those in menopause — and older adults,” said Dr. Bretón.

She also cited the figures backing this fact: 88% have 25-hydroxyvitamin D levels < 30 ng/mL, 37% have levels < 20 ng/mL, and 7% have levels < 10 ng/mL.

“These percentages have brought us to consider their potential link to the current obesity epidemic. Studies in humans have observed a relationship between low plasma levels and markers for obesity and adiposity. Free 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D are known to be reduced in obesity, and treatments to correct vitamin D deficiency are less effective in people with the disease,” she noted.

Regarding the impact in “the opposite direction,” that is, whether obesity affects the nutritional status of vitamin D, Bretón explained that observational studies have generally found a relationship between overweight and obesity and lower plasma levels of vitamin D. “Data from these studies show that each kg/m² increase in [body mass index (BMI)] is associated with a 1.15% decrease in 25-hydroxyvitamin D. These studies also show that the prevalence of vitamin D deficiency is 35% higher in patients with obesity and 24% higher in those that are overweight compared with individuals of normal weight. A relationship has been observed between vitamin D deficiency and body fat percentage in men and women and in all age groups,” explained Dr. Bretón.

Dr. Bretón noted that the diseases most closely associated with obesity are type 2 diabetes, hypertension, ischemic heart disease, cancer (colon, breast, prostate, and ovarian), inflammatory liver disease, asthma, and inflammatory diseases.
 

Mechanisms Involved

Dr. Bretón reviewed the latest evidence on the mechanisms involved in the relationship between obesity and vitamin D deficiency. “People with obesity may experience less solar exposure (more of their body is covered, or they spend more time indoors), but reduced exposure to the sun is known to have less of an influence on vitamin D levels. Studies where people were given radiation to test how their plasma levels of vitamin D respond have found that there is a smaller effect in people with obesity, and that the effect is inversely correlated with BMI: the higher the BMI, the less vitamin D levels increase under exposure to solar radiation.”

Another mechanism is sequestration in adipose tissue, which is the largest reservoir of vitamin D in the body. Nevertheless, factors such as vitamin D concentration in this tissue, regulation of local metabolism, and vitamin uptake and release are less understood. It is therefore unclear whether this mechanism acts to regulate plasma levels.

“This is why severe vitamin D deficiencies (and deficiencies of other fat-soluble vitamins) that occur after bariatric surgery are often not seen in the first year after surgery but develop much later, when the vitamin that has accumulated in adipose tissue is released as weight is lost,” said Dr. Bretón.

“On the other hand, the volumetric dilution in blood that occurs in relation to total body fat content may explain the variability of plasma levels and the response to treatment. Predictive equations have been described,” she explained.
 

The Prenatal Stage

Dr. Bretón mentioned that the best setting for studying the impact of vitamin D and preventing future obesity is during the initial stages of life, when adipogenesis and fetal programming are occurring.

“Studies in animals have shown how maternal vitamin D deficiency (due to nongenetic or nonepigenetic mechanisms) leads to changes in adipogenesis and programming of adipose reserves. A fetal or perinatal environment with low vitamin D levels programs all these mechanisms differently, and not just adipogenesis and adipocyte differentiation in utero,” she added.

Various mechanisms involved in vitamin D deficiency as a cause of obesity are currently being studied in the prenatal setting. One such mechanism is the interaction between the vitamin D receptor and 1 alpha–hydroxylase, which are present in the adipose tissue and help modulate lipid metabolism.

“The vitamin D receptor is particularly expressed in the early stages of adipocyte differentiation, but its expression drops off as the differentiation process continues. Vitamin D receptor knockout mice have a slender phenotype and are resistant to diet-induced obesity. They also accumulate less fat with age and a high-fat diet,” explained Dr. Bretón.

“However, vitamin D also influences the production of inflammatory adipokines in these early stages of life. It specifically plays a central role in modulating the inflammatory response in adipose tissue. These anti-inflammatory effects appear to be mediated by inhibition of [NF–kappa B] and MAPK signaling pathways. All of this suggests that vitamin D influences both adipogenesis and how the adipose tissue functions,” she added.
 

Weight Loss 

When considering the link between vitamin D and obesity in the context of weight loss, Dr. Bretón explained that studies in this area suggest that weight loss per se is not sufficient to increase serum 25-hydroxyvitamin D. Rather, increased synthesis by the skin or increased dietary intake are the most relevant factors for the nutritional status of this vitamin.

“A recent systematic review looking at the relationship between vitamin D levels and weight loss via caloric restriction and exercise showed a small but significant effect in the sense that weight loss increases vitamin D levels. However, other meta-analyses have not found significant results in this area,” she said.

“In my opinion, these results depend on how long the intervention is performed. If a lot of weight is lost in a short time frame, vitamin D is released into the adipose tissue, a process that doesn’t have any significant impact on the nutritional status of this vitamin. Generally, the effect of this relationship is small (1.5 ng/mL) and of little clinical relevance. Moreover, many systematic reviews have analyzed this relationship following bariatric surgery and have also come up with inconclusive results,” Dr. Bretón added.

What role do treatments play in correcting vitamin D deficiency? Dr. Bretón explained that studies that have examined how fortified foods affect obesity show that though these foods don’t cause significant weight changes, they do affect fat mass and waist circumference. This finding suggests that fortified foods have some impact, not necessarily on weight but perhaps on adiposity.

“To rightly value all this data, one has to pay special attention to the environment and the context where the research took place (children or adults, baseline vitamin D levels, and so on). If fortified foods are directly supplemented with cholecalciferol, the results are very inconsistent. We therefore cannot say that treatment with vitamin D can reduce body weight and adiposity,” she said.

When it comes to the complications from obesity, studies of vitamin D supplementation, cancer, and cardiovascular disease did not find any beneficial effect on preventing these pathologies.

For obesity’s impact on vitamin D supplementation, it is known that the levels achieved are lower in patients with obesity compared with patients of normal weight. “Compared with other interventions, however, these levels (15.27 ng/mL) are clinically relevant,” she noted.
 

Future Directions

Dr. Bretón explained that all this evidence has revealed many debates regarding the association of vitamin D levels with obesity. “For example, it appears that obesity could predict low vitamin D levels (not necessarily a deficiency). In turn, these low levels could cause obesity, especially during embryonic development, when programming of adipocyte physiology is taking place.”

Dr. Bretón sees many confounding factors that will need to be elucidated in the future. “One factor is that we aren’t sure whether the patient we’re seeing has vitamin D deficiency or if other factors are in play, like time since weight loss, laboratory technique used to measure vitamin D, nutritional status, geographic location, time of year when the test is performed, et cetera. You also have to assess other factors having to do with obesity, like how adiposity is being measured and whether BMI reflects that adiposity.”

Last, the expert reviewed the major research efforts underway that are based on evidence that vitamin D is associated with insulin resistance. Studies are being performed on pancreatic function, the role of vitamin D levels in ovarian physiology related to insulin resistance (specifically, the role of hyperandrogenism), adipose tissue (vitamin D receptor expression, volumetric dilution), and other components of metabolic syndrome to determine how this vitamin’s status influences the renin-angiotensin system, apoptosis, and cardiovascular risk.

“There is also plenty of research going on surrounding metabolic liver disease, which has a lot to do with the microbiota. So, they’re studying the relationship between vitamin D and dysbiosis, especially regarding local immunomodulation in the gut in relation to the microbiota,” she added.

Another area of research is cancer, focusing primarily on analyzing the nutritional status of vitamin D in relation to the microbiome and how this status may affect the therapeutic effect of chemotherapy and radiation therapy. “It would be interesting to find out whether the effect of immunotherapy varies depending on the patient’s vitamin D status,” concluded Dr. Bretón.

Dr. Bretón’s lecture at the 64th Congress of the SEEN was sponsored by the Foundation for Analysis and Social Studies (FAES).

This article was translated from the Medscape Spanish edition.  A version of this article appeared on Medscape.com.

MADRID — The role of vitamin D in the risk for overweight and obesity has been the subject of multiple studies. Though there’s still not enough evidence to reach a decisive conclusion, several ongoing debates are setting the stage for future research.

Irene Bretón, MD, PhD, discussed these debates in a presentation titled “Vitamin D Deficiency and Obesity: Cause or Consequence?” delivered at the 64th Congress of the Spanish Society of Endocrinology and Nutrition (SEEN). Dr. Bretón is president of the Foundation of the Spanish Society of Endocrinology and Nutrition.

“Vitamin D deficiency can arise from different causes. The percentage that can be attributed to solar radiation is extremely variable. Some studies put it at 80%, while others suggest lower figures. Many diseases have also been associated with vitamin D deficiency or with low vitamin D levels (which are not always at the level of deficiency). Nonetheless, we still have a lot to learn about these associations,” she said.

Dr. Bretón pointed out that many of these studies overlook parathyroid hormone testing. “I also think it’s more appropriate to discuss nutritional status of vitamin D as opposed to serum levels, because these data can be misleading. It would be interesting to focus more on vitamin D metabolism and not just plasma levels.”
 

Vitamin Deficiency 

To answer whether obesity and its complications could be related to low vitamin D levels, Dr. Bretón pointed to this vitamin’s profile in various regions of the world and called attention to the fact that none of the studies on this topic include populations with roughly adequate levels of this vitamin.

“This highlights the prevalence of vitamin D deficiency worldwide. It affects approximately 50% of the population, has been described in all age groups, and affects both men and women — particularly pregnant women and those in menopause — and older adults,” said Dr. Bretón.

She also cited the figures backing this fact: 88% have 25-hydroxyvitamin D levels < 30 ng/mL, 37% have levels < 20 ng/mL, and 7% have levels < 10 ng/mL.

“These percentages have brought us to consider their potential link to the current obesity epidemic. Studies in humans have observed a relationship between low plasma levels and markers for obesity and adiposity. Free 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D are known to be reduced in obesity, and treatments to correct vitamin D deficiency are less effective in people with the disease,” she noted.

Regarding the impact in “the opposite direction,” that is, whether obesity affects the nutritional status of vitamin D, Bretón explained that observational studies have generally found a relationship between overweight and obesity and lower plasma levels of vitamin D. “Data from these studies show that each kg/m² increase in [body mass index (BMI)] is associated with a 1.15% decrease in 25-hydroxyvitamin D. These studies also show that the prevalence of vitamin D deficiency is 35% higher in patients with obesity and 24% higher in those that are overweight compared with individuals of normal weight. A relationship has been observed between vitamin D deficiency and body fat percentage in men and women and in all age groups,” explained Dr. Bretón.

Dr. Bretón noted that the diseases most closely associated with obesity are type 2 diabetes, hypertension, ischemic heart disease, cancer (colon, breast, prostate, and ovarian), inflammatory liver disease, asthma, and inflammatory diseases.
 

Mechanisms Involved

Dr. Bretón reviewed the latest evidence on the mechanisms involved in the relationship between obesity and vitamin D deficiency. “People with obesity may experience less solar exposure (more of their body is covered, or they spend more time indoors), but reduced exposure to the sun is known to have less of an influence on vitamin D levels. Studies where people were given radiation to test how their plasma levels of vitamin D respond have found that there is a smaller effect in people with obesity, and that the effect is inversely correlated with BMI: the higher the BMI, the less vitamin D levels increase under exposure to solar radiation.”

Another mechanism is sequestration in adipose tissue, which is the largest reservoir of vitamin D in the body. Nevertheless, factors such as vitamin D concentration in this tissue, regulation of local metabolism, and vitamin uptake and release are less understood. It is therefore unclear whether this mechanism acts to regulate plasma levels.

“This is why severe vitamin D deficiencies (and deficiencies of other fat-soluble vitamins) that occur after bariatric surgery are often not seen in the first year after surgery but develop much later, when the vitamin that has accumulated in adipose tissue is released as weight is lost,” said Dr. Bretón.

“On the other hand, the volumetric dilution in blood that occurs in relation to total body fat content may explain the variability of plasma levels and the response to treatment. Predictive equations have been described,” she explained.
 

The Prenatal Stage

Dr. Bretón mentioned that the best setting for studying the impact of vitamin D and preventing future obesity is during the initial stages of life, when adipogenesis and fetal programming are occurring.

“Studies in animals have shown how maternal vitamin D deficiency (due to nongenetic or nonepigenetic mechanisms) leads to changes in adipogenesis and programming of adipose reserves. A fetal or perinatal environment with low vitamin D levels programs all these mechanisms differently, and not just adipogenesis and adipocyte differentiation in utero,” she added.

Various mechanisms involved in vitamin D deficiency as a cause of obesity are currently being studied in the prenatal setting. One such mechanism is the interaction between the vitamin D receptor and 1 alpha–hydroxylase, which are present in the adipose tissue and help modulate lipid metabolism.

“The vitamin D receptor is particularly expressed in the early stages of adipocyte differentiation, but its expression drops off as the differentiation process continues. Vitamin D receptor knockout mice have a slender phenotype and are resistant to diet-induced obesity. They also accumulate less fat with age and a high-fat diet,” explained Dr. Bretón.

“However, vitamin D also influences the production of inflammatory adipokines in these early stages of life. It specifically plays a central role in modulating the inflammatory response in adipose tissue. These anti-inflammatory effects appear to be mediated by inhibition of [NF–kappa B] and MAPK signaling pathways. All of this suggests that vitamin D influences both adipogenesis and how the adipose tissue functions,” she added.
 

Weight Loss 

When considering the link between vitamin D and obesity in the context of weight loss, Dr. Bretón explained that studies in this area suggest that weight loss per se is not sufficient to increase serum 25-hydroxyvitamin D. Rather, increased synthesis by the skin or increased dietary intake are the most relevant factors for the nutritional status of this vitamin.

“A recent systematic review looking at the relationship between vitamin D levels and weight loss via caloric restriction and exercise showed a small but significant effect in the sense that weight loss increases vitamin D levels. However, other meta-analyses have not found significant results in this area,” she said.

“In my opinion, these results depend on how long the intervention is performed. If a lot of weight is lost in a short time frame, vitamin D is released into the adipose tissue, a process that doesn’t have any significant impact on the nutritional status of this vitamin. Generally, the effect of this relationship is small (1.5 ng/mL) and of little clinical relevance. Moreover, many systematic reviews have analyzed this relationship following bariatric surgery and have also come up with inconclusive results,” Dr. Bretón added.

What role do treatments play in correcting vitamin D deficiency? Dr. Bretón explained that studies that have examined how fortified foods affect obesity show that though these foods don’t cause significant weight changes, they do affect fat mass and waist circumference. This finding suggests that fortified foods have some impact, not necessarily on weight but perhaps on adiposity.

“To rightly value all this data, one has to pay special attention to the environment and the context where the research took place (children or adults, baseline vitamin D levels, and so on). If fortified foods are directly supplemented with cholecalciferol, the results are very inconsistent. We therefore cannot say that treatment with vitamin D can reduce body weight and adiposity,” she said.

When it comes to the complications from obesity, studies of vitamin D supplementation, cancer, and cardiovascular disease did not find any beneficial effect on preventing these pathologies.

For obesity’s impact on vitamin D supplementation, it is known that the levels achieved are lower in patients with obesity compared with patients of normal weight. “Compared with other interventions, however, these levels (15.27 ng/mL) are clinically relevant,” she noted.
 

Future Directions

Dr. Bretón explained that all this evidence has revealed many debates regarding the association of vitamin D levels with obesity. “For example, it appears that obesity could predict low vitamin D levels (not necessarily a deficiency). In turn, these low levels could cause obesity, especially during embryonic development, when programming of adipocyte physiology is taking place.”

Dr. Bretón sees many confounding factors that will need to be elucidated in the future. “One factor is that we aren’t sure whether the patient we’re seeing has vitamin D deficiency or if other factors are in play, like time since weight loss, laboratory technique used to measure vitamin D, nutritional status, geographic location, time of year when the test is performed, et cetera. You also have to assess other factors having to do with obesity, like how adiposity is being measured and whether BMI reflects that adiposity.”

Last, the expert reviewed the major research efforts underway that are based on evidence that vitamin D is associated with insulin resistance. Studies are being performed on pancreatic function, the role of vitamin D levels in ovarian physiology related to insulin resistance (specifically, the role of hyperandrogenism), adipose tissue (vitamin D receptor expression, volumetric dilution), and other components of metabolic syndrome to determine how this vitamin’s status influences the renin-angiotensin system, apoptosis, and cardiovascular risk.

“There is also plenty of research going on surrounding metabolic liver disease, which has a lot to do with the microbiota. So, they’re studying the relationship between vitamin D and dysbiosis, especially regarding local immunomodulation in the gut in relation to the microbiota,” she added.

Another area of research is cancer, focusing primarily on analyzing the nutritional status of vitamin D in relation to the microbiome and how this status may affect the therapeutic effect of chemotherapy and radiation therapy. “It would be interesting to find out whether the effect of immunotherapy varies depending on the patient’s vitamin D status,” concluded Dr. Bretón.

Dr. Bretón’s lecture at the 64th Congress of the SEEN was sponsored by the Foundation for Analysis and Social Studies (FAES).

This article was translated from the Medscape Spanish edition.  A version of this article appeared on Medscape.com.

Breast cancer has a worse prognosis when diagnosed during pregnancy or postpartum. Methods for early detection are needed, as evidenced every day in the multidisciplinary unit for treating pregnancy-associated breast cancer, which operates within the breast unit at the Vall d’Hebron University Hospital in Barcelona.

The team working in this field is led by Cristina Saura, PhD, who is also head of the Breast Cancer Group at the Vall d’Hebron Institute of Oncology (VHIO). The results of a study recently published in Cancer Discovery show, for the first time, that breast milk from breast cancer patients contains circulating tumor DNA that can be detected by a liquid biopsy of the milk.

Dr. Saura explained in an interview why they began to pursue this research, which, in one sense, fell into their laps. “In this case, it arose from the concerns of a breast cancer patient who was diagnosed while pregnant with her third daughter. She was actually the one who came up with the idea for the project. She was worried that she had transmitted the tumor through her breast milk to her second daughter while breastfeeding. She had been breastfeeding for a long time and had stretched it out until shortly before she was diagnosed with breast cancer. So she brought us a sample of breast milk that she had stored in her freezer.

“So, thanks to her, that’s where our project started. Though we knew that breast cancer is not transmitted through breast milk, we decided to test the sample and look for markers that could help our research. In the end, when we analyzed the patient’s breast milk, we found DNA with the same mutation that was present in her tumor,” explained Dr. Saura. She noted that the breast milk they analyzed had been frozen for more than a year before the patient’s cancer diagnosis.

In terms of methodology, Ana Vivancos, PhD, head of the VHIO cancer genomics group and also one of the authors of the study, explained that they used two techniques to analyze the breast milk and blood samples: next-generation sequencing and droplet digital polymerase chain reaction. These methods confirmed the presence of ctDNA in the breast milk.
 

High-sensitivity genomic panel

“We were able to detect tumor mutations in milk samples from 13 of the 15 patients with breast cancer who were tested, while circulating tumor DNA was detected in only one of all the blood samples that were collected at the same time,” said Dr. Vivancos. “The samples from the two patients for whom no mutation was detected were discovered to be colostrum that had been collected during the first few hours of lactation.”

As a next step to make this finding practically useful, the research team designed a genomic panel using next-generation sequencing as a potential method for early detection of breast cancer. “We’ve developed a panel that uses hybrid capture chemistry and unique molecular identifiers that ensure better sensitivity during next-generation sequencing. The panel has been calibrated, based on the existing literature, to detect the genes that are most frequently mutated in breast cancer in young women under 45 years old.”

According to Dr. Vivancos, the sensitivity of this panel exceeds 70%. This means that for all the patient samples analyzed using this panel, 7 out of 10 cases are detected with 100% specificity.

“In practice, the panel design allows us to detect mutations in more than 95% of breast cancer cases in women under 45 years old. Therefore, using this panel for early detection of this type of tumor during lactation should contribute to addressing a medical need that, until today, has gone unmet,” noted Dr. Vivancos.

As for this unresolved need, Dr. Saura explained that there is currently no system or tool available to allow early suspicion of breast tumors in pregnant women prior to diagnosis. “That’s exactly the goal of this research: to screen for breast cancer in women who have just given birth. Now, it needs to be validated in a larger group of women in a clinical trial.”
 

More direct contact with tumor cells

In Dr. Saura’s opinion, in Spain, just like taking a small blood sample from newborns in a heel-prick test to rule out metabolic diseases, milk samples could be taken from women who give birth to rule out or diagnose breast cancer.

As to the potential advantages that breast milk liquid biopsy could have over similar techniques like blood liquid biopsy, Dr. Vivancos pointed to the results of her study: “We have seen that breast milk liquid biopsy was positive for the presence of circulating tumor DNA in 87% of cases, whereas blood only revealed the presence of this marker in 8% of cases. This difference indicates that breast milk is a biofluid that is in more direct contact with tumor cells and therefore will be more informative in earlier stages.”

Dr. Saura explained that the data does not lie when it comes to these tumors in pregnant or postpartum women. “In general, they tend to have a worse prognosis because, in most cases, they are diagnosed in advanced stages. Furthermore, it is typically assumed that the physiological changes in the breasts during gestation and lactation, which are considered to be normal, may hide a developing tumor. The fact is that postpartum breast cancer, understood to be the 10 years after delivery, accounts for 40%-45% of breast cancer cases diagnosed before age 45.”

The researchers plan to continue this project. “Our next step to confirm the usefulness of breast milk as a new tool for liquid biopsy for early detection of breast cancer during the postpartum period is to perform this noninvasive test in thousands of women,” said Dr. Saura.
 

Goal: Standardize the test as a screening method

“Based on the results we’ve published, we’re starting a study aimed at collecting breast milk samples from 5,000 healthy women around the world who became pregnant at age 40 or older, or who got pregnant at any age and carry mutations that increase their risk of breast cancer,” Dr. Saura added.

When asked when they expect to have preliminary results from this new study, Dr. Saura stated that it’s not yet possible to say exactly when. “We’re still waiting for funding to continue this project, but we continue performing analyses on a case-by-case basis. Of course, if we detect any abnormalities in these women, we will follow the established protocol to confirm diagnosis and start treatment if necessary.”

When asked whether it is reasonable to expect breast milk liquid biopsy to become normalized as a screening method for women of childbearing age who have a history or risk factors for developing breast cancer, Dr. Vivancos said, “That’s the scenario we see in the future and what we wish to contribute toward by providing scientific evidence to make it a reality.”

“For now, our goal is to validate whether circulating tumor DNA can be detected by breast milk liquid biopsy even before breast cancer can be diagnosed using conventional imaging techniques. If we can validate these preliminary results, we will be able to detect breast cancer early using a noninvasive test like breast milk liquid biopsy,” explained Saura.

Lastly, and in view of the issues that are still unresolved when it comes to the detection and treatment of breast cancer during pregnancy, Dr. Saura highlighted the emotional impact that a diagnosis of pregnancy-related cancer has on women and on those close to them. “But the first thing they need to know is that diagnosis is not necessarily synonymous with termination of the pregnancy. On the contrary, this tumor can be treated during pregnancy, since surgery can be performed at any time, and chemotherapy can be started in the second trimester. Proof of this is the 72 children who have been born under these circumstances in the past 20 years at the Vall d’Hebrón University Hospital. This hospital is a pioneer in Spain thanks to its multidisciplinary program for education and specific follow-up with women who have been diagnosed with a breast tumor during pregnancy.”

Dr. Saura and Dr. Vivancos reported no relevant financial relationships.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Breast cancer has a worse prognosis when diagnosed during pregnancy or postpartum. Methods for early detection are needed, as evidenced every day in the multidisciplinary unit for treating pregnancy-associated breast cancer, which operates within the breast unit at the Vall d’Hebron University Hospital in Barcelona.

The team working in this field is led by Cristina Saura, PhD, who is also head of the Breast Cancer Group at the Vall d’Hebron Institute of Oncology (VHIO). The results of a study recently published in Cancer Discovery show, for the first time, that breast milk from breast cancer patients contains circulating tumor DNA that can be detected by a liquid biopsy of the milk.

Dr. Saura explained in an interview why they began to pursue this research, which, in one sense, fell into their laps. “In this case, it arose from the concerns of a breast cancer patient who was diagnosed while pregnant with her third daughter. She was actually the one who came up with the idea for the project. She was worried that she had transmitted the tumor through her breast milk to her second daughter while breastfeeding. She had been breastfeeding for a long time and had stretched it out until shortly before she was diagnosed with breast cancer. So she brought us a sample of breast milk that she had stored in her freezer.

“So, thanks to her, that’s where our project started. Though we knew that breast cancer is not transmitted through breast milk, we decided to test the sample and look for markers that could help our research. In the end, when we analyzed the patient’s breast milk, we found DNA with the same mutation that was present in her tumor,” explained Dr. Saura. She noted that the breast milk they analyzed had been frozen for more than a year before the patient’s cancer diagnosis.

In terms of methodology, Ana Vivancos, PhD, head of the VHIO cancer genomics group and also one of the authors of the study, explained that they used two techniques to analyze the breast milk and blood samples: next-generation sequencing and droplet digital polymerase chain reaction. These methods confirmed the presence of ctDNA in the breast milk.
 

High-sensitivity genomic panel

“We were able to detect tumor mutations in milk samples from 13 of the 15 patients with breast cancer who were tested, while circulating tumor DNA was detected in only one of all the blood samples that were collected at the same time,” said Dr. Vivancos. “The samples from the two patients for whom no mutation was detected were discovered to be colostrum that had been collected during the first few hours of lactation.”

As a next step to make this finding practically useful, the research team designed a genomic panel using next-generation sequencing as a potential method for early detection of breast cancer. “We’ve developed a panel that uses hybrid capture chemistry and unique molecular identifiers that ensure better sensitivity during next-generation sequencing. The panel has been calibrated, based on the existing literature, to detect the genes that are most frequently mutated in breast cancer in young women under 45 years old.”

According to Dr. Vivancos, the sensitivity of this panel exceeds 70%. This means that for all the patient samples analyzed using this panel, 7 out of 10 cases are detected with 100% specificity.

“In practice, the panel design allows us to detect mutations in more than 95% of breast cancer cases in women under 45 years old. Therefore, using this panel for early detection of this type of tumor during lactation should contribute to addressing a medical need that, until today, has gone unmet,” noted Dr. Vivancos.

As for this unresolved need, Dr. Saura explained that there is currently no system or tool available to allow early suspicion of breast tumors in pregnant women prior to diagnosis. “That’s exactly the goal of this research: to screen for breast cancer in women who have just given birth. Now, it needs to be validated in a larger group of women in a clinical trial.”
 

More direct contact with tumor cells

In Dr. Saura’s opinion, in Spain, just like taking a small blood sample from newborns in a heel-prick test to rule out metabolic diseases, milk samples could be taken from women who give birth to rule out or diagnose breast cancer.

As to the potential advantages that breast milk liquid biopsy could have over similar techniques like blood liquid biopsy, Dr. Vivancos pointed to the results of her study: “We have seen that breast milk liquid biopsy was positive for the presence of circulating tumor DNA in 87% of cases, whereas blood only revealed the presence of this marker in 8% of cases. This difference indicates that breast milk is a biofluid that is in more direct contact with tumor cells and therefore will be more informative in earlier stages.”

Dr. Saura explained that the data does not lie when it comes to these tumors in pregnant or postpartum women. “In general, they tend to have a worse prognosis because, in most cases, they are diagnosed in advanced stages. Furthermore, it is typically assumed that the physiological changes in the breasts during gestation and lactation, which are considered to be normal, may hide a developing tumor. The fact is that postpartum breast cancer, understood to be the 10 years after delivery, accounts for 40%-45% of breast cancer cases diagnosed before age 45.”

The researchers plan to continue this project. “Our next step to confirm the usefulness of breast milk as a new tool for liquid biopsy for early detection of breast cancer during the postpartum period is to perform this noninvasive test in thousands of women,” said Dr. Saura.
 

Goal: Standardize the test as a screening method

“Based on the results we’ve published, we’re starting a study aimed at collecting breast milk samples from 5,000 healthy women around the world who became pregnant at age 40 or older, or who got pregnant at any age and carry mutations that increase their risk of breast cancer,” Dr. Saura added.

When asked when they expect to have preliminary results from this new study, Dr. Saura stated that it’s not yet possible to say exactly when. “We’re still waiting for funding to continue this project, but we continue performing analyses on a case-by-case basis. Of course, if we detect any abnormalities in these women, we will follow the established protocol to confirm diagnosis and start treatment if necessary.”

When asked whether it is reasonable to expect breast milk liquid biopsy to become normalized as a screening method for women of childbearing age who have a history or risk factors for developing breast cancer, Dr. Vivancos said, “That’s the scenario we see in the future and what we wish to contribute toward by providing scientific evidence to make it a reality.”

“For now, our goal is to validate whether circulating tumor DNA can be detected by breast milk liquid biopsy even before breast cancer can be diagnosed using conventional imaging techniques. If we can validate these preliminary results, we will be able to detect breast cancer early using a noninvasive test like breast milk liquid biopsy,” explained Saura.

Lastly, and in view of the issues that are still unresolved when it comes to the detection and treatment of breast cancer during pregnancy, Dr. Saura highlighted the emotional impact that a diagnosis of pregnancy-related cancer has on women and on those close to them. “But the first thing they need to know is that diagnosis is not necessarily synonymous with termination of the pregnancy. On the contrary, this tumor can be treated during pregnancy, since surgery can be performed at any time, and chemotherapy can be started in the second trimester. Proof of this is the 72 children who have been born under these circumstances in the past 20 years at the Vall d’Hebrón University Hospital. This hospital is a pioneer in Spain thanks to its multidisciplinary program for education and specific follow-up with women who have been diagnosed with a breast tumor during pregnancy.”

Dr. Saura and Dr. Vivancos reported no relevant financial relationships.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Breast cancer has a worse prognosis when diagnosed during pregnancy or postpartum. Methods for early detection are needed, as evidenced every day in the multidisciplinary unit for treating pregnancy-associated breast cancer, which operates within the breast unit at the Vall d’Hebron University Hospital in Barcelona.

The team working in this field is led by Cristina Saura, PhD, who is also head of the Breast Cancer Group at the Vall d’Hebron Institute of Oncology (VHIO). The results of a study recently published in Cancer Discovery show, for the first time, that breast milk from breast cancer patients contains circulating tumor DNA that can be detected by a liquid biopsy of the milk.

Dr. Saura explained in an interview why they began to pursue this research, which, in one sense, fell into their laps. “In this case, it arose from the concerns of a breast cancer patient who was diagnosed while pregnant with her third daughter. She was actually the one who came up with the idea for the project. She was worried that she had transmitted the tumor through her breast milk to her second daughter while breastfeeding. She had been breastfeeding for a long time and had stretched it out until shortly before she was diagnosed with breast cancer. So she brought us a sample of breast milk that she had stored in her freezer.

“So, thanks to her, that’s where our project started. Though we knew that breast cancer is not transmitted through breast milk, we decided to test the sample and look for markers that could help our research. In the end, when we analyzed the patient’s breast milk, we found DNA with the same mutation that was present in her tumor,” explained Dr. Saura. She noted that the breast milk they analyzed had been frozen for more than a year before the patient’s cancer diagnosis.

In terms of methodology, Ana Vivancos, PhD, head of the VHIO cancer genomics group and also one of the authors of the study, explained that they used two techniques to analyze the breast milk and blood samples: next-generation sequencing and droplet digital polymerase chain reaction. These methods confirmed the presence of ctDNA in the breast milk.
 

High-sensitivity genomic panel

“We were able to detect tumor mutations in milk samples from 13 of the 15 patients with breast cancer who were tested, while circulating tumor DNA was detected in only one of all the blood samples that were collected at the same time,” said Dr. Vivancos. “The samples from the two patients for whom no mutation was detected were discovered to be colostrum that had been collected during the first few hours of lactation.”

As a next step to make this finding practically useful, the research team designed a genomic panel using next-generation sequencing as a potential method for early detection of breast cancer. “We’ve developed a panel that uses hybrid capture chemistry and unique molecular identifiers that ensure better sensitivity during next-generation sequencing. The panel has been calibrated, based on the existing literature, to detect the genes that are most frequently mutated in breast cancer in young women under 45 years old.”

According to Dr. Vivancos, the sensitivity of this panel exceeds 70%. This means that for all the patient samples analyzed using this panel, 7 out of 10 cases are detected with 100% specificity.

“In practice, the panel design allows us to detect mutations in more than 95% of breast cancer cases in women under 45 years old. Therefore, using this panel for early detection of this type of tumor during lactation should contribute to addressing a medical need that, until today, has gone unmet,” noted Dr. Vivancos.

As for this unresolved need, Dr. Saura explained that there is currently no system or tool available to allow early suspicion of breast tumors in pregnant women prior to diagnosis. “That’s exactly the goal of this research: to screen for breast cancer in women who have just given birth. Now, it needs to be validated in a larger group of women in a clinical trial.”
 

More direct contact with tumor cells

In Dr. Saura’s opinion, in Spain, just like taking a small blood sample from newborns in a heel-prick test to rule out metabolic diseases, milk samples could be taken from women who give birth to rule out or diagnose breast cancer.

As to the potential advantages that breast milk liquid biopsy could have over similar techniques like blood liquid biopsy, Dr. Vivancos pointed to the results of her study: “We have seen that breast milk liquid biopsy was positive for the presence of circulating tumor DNA in 87% of cases, whereas blood only revealed the presence of this marker in 8% of cases. This difference indicates that breast milk is a biofluid that is in more direct contact with tumor cells and therefore will be more informative in earlier stages.”

Dr. Saura explained that the data does not lie when it comes to these tumors in pregnant or postpartum women. “In general, they tend to have a worse prognosis because, in most cases, they are diagnosed in advanced stages. Furthermore, it is typically assumed that the physiological changes in the breasts during gestation and lactation, which are considered to be normal, may hide a developing tumor. The fact is that postpartum breast cancer, understood to be the 10 years after delivery, accounts for 40%-45% of breast cancer cases diagnosed before age 45.”

The researchers plan to continue this project. “Our next step to confirm the usefulness of breast milk as a new tool for liquid biopsy for early detection of breast cancer during the postpartum period is to perform this noninvasive test in thousands of women,” said Dr. Saura.
 

Goal: Standardize the test as a screening method

“Based on the results we’ve published, we’re starting a study aimed at collecting breast milk samples from 5,000 healthy women around the world who became pregnant at age 40 or older, or who got pregnant at any age and carry mutations that increase their risk of breast cancer,” Dr. Saura added.

When asked when they expect to have preliminary results from this new study, Dr. Saura stated that it’s not yet possible to say exactly when. “We’re still waiting for funding to continue this project, but we continue performing analyses on a case-by-case basis. Of course, if we detect any abnormalities in these women, we will follow the established protocol to confirm diagnosis and start treatment if necessary.”

When asked whether it is reasonable to expect breast milk liquid biopsy to become normalized as a screening method for women of childbearing age who have a history or risk factors for developing breast cancer, Dr. Vivancos said, “That’s the scenario we see in the future and what we wish to contribute toward by providing scientific evidence to make it a reality.”

“For now, our goal is to validate whether circulating tumor DNA can be detected by breast milk liquid biopsy even before breast cancer can be diagnosed using conventional imaging techniques. If we can validate these preliminary results, we will be able to detect breast cancer early using a noninvasive test like breast milk liquid biopsy,” explained Saura.

Lastly, and in view of the issues that are still unresolved when it comes to the detection and treatment of breast cancer during pregnancy, Dr. Saura highlighted the emotional impact that a diagnosis of pregnancy-related cancer has on women and on those close to them. “But the first thing they need to know is that diagnosis is not necessarily synonymous with termination of the pregnancy. On the contrary, this tumor can be treated during pregnancy, since surgery can be performed at any time, and chemotherapy can be started in the second trimester. Proof of this is the 72 children who have been born under these circumstances in the past 20 years at the Vall d’Hebrón University Hospital. This hospital is a pioneer in Spain thanks to its multidisciplinary program for education and specific follow-up with women who have been diagnosed with a breast tumor during pregnancy.”

Dr. Saura and Dr. Vivancos reported no relevant financial relationships.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Smokers with extreme phenotypes of high and low risk of developing tobacco-associated lung cancer have different genetic profiles, according to a multidisciplinary study conducted by specialists from the Cancer Center at the University of Navarra Clinic (CUN). The results were presented at the annual meeting of the American Society for Clinical Oncology. 

Ana Patiño García, PhD, director of the genomic medicine unit at the CUN and a coordinator of the research, explained in an interview the main reason why this study was conducted. “This study came straight out of the oncology clinic, where we are constantly encountering patients with lung cancer who have never smoked or who have smoked very little, while we also all know people who have smoked a lot throughout their lifetime and have never developed cancer. This observation has led us to ask whether there are genetic factors that increase or decrease the risk of cancer and protect people against this disease.”

José Luis Pérez Gracia, MD, PhD, oncologist, coordinator of the oncology trials department at the CUN and another of the individuals responsible for this research, said: “This is the first study to validate genetic factors associated with people who appear to be resistant to developing tobacco-related lung cancer or who, on the other hand, are at high risk of developing this disease.”
 

Pioneering approach 

Earlier evidence showed that some smokers develop cancer, and others don’t. “This is a very well-known fact, since everyone knows about some elderly person who has been a heavy smoker and has never developed lung cancer,” said Dr. Pérez. “Unfortunately, we oncologists encounter young smokers who have been diagnosed with this disease. However, despite the importance of understanding the causes behind these phenotypes, it is a question that has never been studied from a genetic standpoint.”

The study was conducted using DNA from 133 heavy smokers who had not developed lung cancer at a mean age of 80 years, and from another 116 heavy smokers who had developed this type of cancer at a mean age of 50 years. This DNA was sequenced using next-generation techniques, and the results were analyzed using bioinformatics and artificial intelligence systems in collaboration with the University of Navarra Applied Medical Research Center and the University of Navarra School of Engineering.

When asked how this methodology could be applied to support other research conducted along these lines, Dr. Patiño said, “The most novel thing about this research is actually its approach. It’s based on groups at the extremes, defined by the patient’s age at the time of developing lung cancer and how much they had smoked. This type of comparative design is called extreme phenotypes, and its main distinguishing characteristic – which is also its most limiting characteristic – is choosing cases and controls well. Obviously, with today’s next-generation sequencing technologies, we achieve a quantity and quality of data that would have been unattainable in years gone by.”

Speaking to the role played by bioinformatics and artificial intelligence in this research, Dr. Patiño explained that they are fairly new techniques. “In fact, these technologies could be thought of as spearheading a lot of the biomedical research being done today. They’ve also somewhat set the stage for the paradigm shift where the investigator asks the data a question, and in the case of artificial intelligence, it’s the data that answer.”
 

Pinpointing genetic differences

In his analysis of the most noteworthy data and conclusions from this research, Dr. Pérez noted, “The most significant thing we’ve seen is that both populations have genetic differences. This suggests that our hypothesis is correct. Of course, more studies including a larger number of individuals will be needed to confirm these findings. For the first time, our work has laid the foundation for developing this line of research.” 

“Many genetic variants that we have identified as differentials in cases and controls are found in genes relevant to the immune system (HLA system), in genes related to functional pathways that are often altered in tumor development, and in structural proteins and in genes related to cell mobility,” emphasized Dr. Patiño.

Many of the genetic characteristics that were discovered are located in genes with functions related to cancer development, such as immune response, repair of genetic material, regulation of inflammation, etc. This finding is highly significant, said Dr. Pérez. “However, we must remember that these phenotypes may be attributable to multiple causes, not just one cause.”

Furthermore, the specialist explained the next steps to be taken in the context of the line opened up by this research. “First, we must expand these studies, including more individuals with, if possible, even more extreme phenotypes: more smokers who are older and younger, respectively. Once the statistical evidence is stronger, we must also confirm that the alterations observed in lab-based studies truly impact gene function.”
 

Earlier diagnosis 

The clinician also discussed the potential ways that the conclusions of this study could be applied to clinical practice now and in the future, and how the conclusions could benefit these patients. “The results of our line of research may help in early identification of those individuals at high risk of developing lung cancer if they smoke, so that they could be included in prevention programs to keep them from smoking or to help them stop smoking,” said Dr. Pérez. “It would also allow for early diagnosis of cancer at a time when there is a much higher chance of curing it. 

“However, the most important thing is that our study may allow us to better understand the mechanisms by which cancer arises and especially why some people do not develop it. This [understanding] could lead to new diagnostic techniques and new treatments for this disease. The techniques needed to develop this line of research (bioinformatic mass sequencing and artificial intelligence) are available and becoming more reliable and more accessible every day. So, we believe our strategy is very realistic,” he added.

Although the line of research opened up by this study depicts a new scenario, the specialists still must face several challenges to discover why some smokers are more likely than others to develop lung cancer.

“There are many lines of research in this regard,” said Dr. Pérez. “But to name a few, I would draw attention to the need to increase the number of cases and controls to improve the comparison, study patients with other tumors related to tobacco use, ask new questions using the data we have already collected, and apply other genomic techniques that would allow us to perform additional studies of genetic variants that have not yet been studied. And, of course, we need to use functional studies to expand our understanding of the function and activity of the genes that have already been identified.” 

Dr. Patiño and Dr. Pérez declared that they have no relevant financial conflicts of interest.

This article was translated from the Medscape Spanish Edition. A version appeared on Medscape.com.

Smokers with extreme phenotypes of high and low risk of developing tobacco-associated lung cancer have different genetic profiles, according to a multidisciplinary study conducted by specialists from the Cancer Center at the University of Navarra Clinic (CUN). The results were presented at the annual meeting of the American Society for Clinical Oncology. 

Ana Patiño García, PhD, director of the genomic medicine unit at the CUN and a coordinator of the research, explained in an interview the main reason why this study was conducted. “This study came straight out of the oncology clinic, where we are constantly encountering patients with lung cancer who have never smoked or who have smoked very little, while we also all know people who have smoked a lot throughout their lifetime and have never developed cancer. This observation has led us to ask whether there are genetic factors that increase or decrease the risk of cancer and protect people against this disease.”

José Luis Pérez Gracia, MD, PhD, oncologist, coordinator of the oncology trials department at the CUN and another of the individuals responsible for this research, said: “This is the first study to validate genetic factors associated with people who appear to be resistant to developing tobacco-related lung cancer or who, on the other hand, are at high risk of developing this disease.”
 

Pioneering approach 

Earlier evidence showed that some smokers develop cancer, and others don’t. “This is a very well-known fact, since everyone knows about some elderly person who has been a heavy smoker and has never developed lung cancer,” said Dr. Pérez. “Unfortunately, we oncologists encounter young smokers who have been diagnosed with this disease. However, despite the importance of understanding the causes behind these phenotypes, it is a question that has never been studied from a genetic standpoint.”

The study was conducted using DNA from 133 heavy smokers who had not developed lung cancer at a mean age of 80 years, and from another 116 heavy smokers who had developed this type of cancer at a mean age of 50 years. This DNA was sequenced using next-generation techniques, and the results were analyzed using bioinformatics and artificial intelligence systems in collaboration with the University of Navarra Applied Medical Research Center and the University of Navarra School of Engineering.

When asked how this methodology could be applied to support other research conducted along these lines, Dr. Patiño said, “The most novel thing about this research is actually its approach. It’s based on groups at the extremes, defined by the patient’s age at the time of developing lung cancer and how much they had smoked. This type of comparative design is called extreme phenotypes, and its main distinguishing characteristic – which is also its most limiting characteristic – is choosing cases and controls well. Obviously, with today’s next-generation sequencing technologies, we achieve a quantity and quality of data that would have been unattainable in years gone by.”

Speaking to the role played by bioinformatics and artificial intelligence in this research, Dr. Patiño explained that they are fairly new techniques. “In fact, these technologies could be thought of as spearheading a lot of the biomedical research being done today. They’ve also somewhat set the stage for the paradigm shift where the investigator asks the data a question, and in the case of artificial intelligence, it’s the data that answer.”
 

Pinpointing genetic differences

In his analysis of the most noteworthy data and conclusions from this research, Dr. Pérez noted, “The most significant thing we’ve seen is that both populations have genetic differences. This suggests that our hypothesis is correct. Of course, more studies including a larger number of individuals will be needed to confirm these findings. For the first time, our work has laid the foundation for developing this line of research.” 

“Many genetic variants that we have identified as differentials in cases and controls are found in genes relevant to the immune system (HLA system), in genes related to functional pathways that are often altered in tumor development, and in structural proteins and in genes related to cell mobility,” emphasized Dr. Patiño.

Many of the genetic characteristics that were discovered are located in genes with functions related to cancer development, such as immune response, repair of genetic material, regulation of inflammation, etc. This finding is highly significant, said Dr. Pérez. “However, we must remember that these phenotypes may be attributable to multiple causes, not just one cause.”

Furthermore, the specialist explained the next steps to be taken in the context of the line opened up by this research. “First, we must expand these studies, including more individuals with, if possible, even more extreme phenotypes: more smokers who are older and younger, respectively. Once the statistical evidence is stronger, we must also confirm that the alterations observed in lab-based studies truly impact gene function.”
 

Earlier diagnosis 

The clinician also discussed the potential ways that the conclusions of this study could be applied to clinical practice now and in the future, and how the conclusions could benefit these patients. “The results of our line of research may help in early identification of those individuals at high risk of developing lung cancer if they smoke, so that they could be included in prevention programs to keep them from smoking or to help them stop smoking,” said Dr. Pérez. “It would also allow for early diagnosis of cancer at a time when there is a much higher chance of curing it. 

“However, the most important thing is that our study may allow us to better understand the mechanisms by which cancer arises and especially why some people do not develop it. This [understanding] could lead to new diagnostic techniques and new treatments for this disease. The techniques needed to develop this line of research (bioinformatic mass sequencing and artificial intelligence) are available and becoming more reliable and more accessible every day. So, we believe our strategy is very realistic,” he added.

Although the line of research opened up by this study depicts a new scenario, the specialists still must face several challenges to discover why some smokers are more likely than others to develop lung cancer.

“There are many lines of research in this regard,” said Dr. Pérez. “But to name a few, I would draw attention to the need to increase the number of cases and controls to improve the comparison, study patients with other tumors related to tobacco use, ask new questions using the data we have already collected, and apply other genomic techniques that would allow us to perform additional studies of genetic variants that have not yet been studied. And, of course, we need to use functional studies to expand our understanding of the function and activity of the genes that have already been identified.” 

Dr. Patiño and Dr. Pérez declared that they have no relevant financial conflicts of interest.

This article was translated from the Medscape Spanish Edition. A version appeared on Medscape.com.

Smokers with extreme phenotypes of high and low risk of developing tobacco-associated lung cancer have different genetic profiles, according to a multidisciplinary study conducted by specialists from the Cancer Center at the University of Navarra Clinic (CUN). The results were presented at the annual meeting of the American Society for Clinical Oncology. 

Ana Patiño García, PhD, director of the genomic medicine unit at the CUN and a coordinator of the research, explained in an interview the main reason why this study was conducted. “This study came straight out of the oncology clinic, where we are constantly encountering patients with lung cancer who have never smoked or who have smoked very little, while we also all know people who have smoked a lot throughout their lifetime and have never developed cancer. This observation has led us to ask whether there are genetic factors that increase or decrease the risk of cancer and protect people against this disease.”

José Luis Pérez Gracia, MD, PhD, oncologist, coordinator of the oncology trials department at the CUN and another of the individuals responsible for this research, said: “This is the first study to validate genetic factors associated with people who appear to be resistant to developing tobacco-related lung cancer or who, on the other hand, are at high risk of developing this disease.”
 

Pioneering approach 

Earlier evidence showed that some smokers develop cancer, and others don’t. “This is a very well-known fact, since everyone knows about some elderly person who has been a heavy smoker and has never developed lung cancer,” said Dr. Pérez. “Unfortunately, we oncologists encounter young smokers who have been diagnosed with this disease. However, despite the importance of understanding the causes behind these phenotypes, it is a question that has never been studied from a genetic standpoint.”

The study was conducted using DNA from 133 heavy smokers who had not developed lung cancer at a mean age of 80 years, and from another 116 heavy smokers who had developed this type of cancer at a mean age of 50 years. This DNA was sequenced using next-generation techniques, and the results were analyzed using bioinformatics and artificial intelligence systems in collaboration with the University of Navarra Applied Medical Research Center and the University of Navarra School of Engineering.

When asked how this methodology could be applied to support other research conducted along these lines, Dr. Patiño said, “The most novel thing about this research is actually its approach. It’s based on groups at the extremes, defined by the patient’s age at the time of developing lung cancer and how much they had smoked. This type of comparative design is called extreme phenotypes, and its main distinguishing characteristic – which is also its most limiting characteristic – is choosing cases and controls well. Obviously, with today’s next-generation sequencing technologies, we achieve a quantity and quality of data that would have been unattainable in years gone by.”

Speaking to the role played by bioinformatics and artificial intelligence in this research, Dr. Patiño explained that they are fairly new techniques. “In fact, these technologies could be thought of as spearheading a lot of the biomedical research being done today. They’ve also somewhat set the stage for the paradigm shift where the investigator asks the data a question, and in the case of artificial intelligence, it’s the data that answer.”
 

Pinpointing genetic differences

In his analysis of the most noteworthy data and conclusions from this research, Dr. Pérez noted, “The most significant thing we’ve seen is that both populations have genetic differences. This suggests that our hypothesis is correct. Of course, more studies including a larger number of individuals will be needed to confirm these findings. For the first time, our work has laid the foundation for developing this line of research.” 

“Many genetic variants that we have identified as differentials in cases and controls are found in genes relevant to the immune system (HLA system), in genes related to functional pathways that are often altered in tumor development, and in structural proteins and in genes related to cell mobility,” emphasized Dr. Patiño.

Many of the genetic characteristics that were discovered are located in genes with functions related to cancer development, such as immune response, repair of genetic material, regulation of inflammation, etc. This finding is highly significant, said Dr. Pérez. “However, we must remember that these phenotypes may be attributable to multiple causes, not just one cause.”

Furthermore, the specialist explained the next steps to be taken in the context of the line opened up by this research. “First, we must expand these studies, including more individuals with, if possible, even more extreme phenotypes: more smokers who are older and younger, respectively. Once the statistical evidence is stronger, we must also confirm that the alterations observed in lab-based studies truly impact gene function.”
 

Earlier diagnosis 

The clinician also discussed the potential ways that the conclusions of this study could be applied to clinical practice now and in the future, and how the conclusions could benefit these patients. “The results of our line of research may help in early identification of those individuals at high risk of developing lung cancer if they smoke, so that they could be included in prevention programs to keep them from smoking or to help them stop smoking,” said Dr. Pérez. “It would also allow for early diagnosis of cancer at a time when there is a much higher chance of curing it. 

“However, the most important thing is that our study may allow us to better understand the mechanisms by which cancer arises and especially why some people do not develop it. This [understanding] could lead to new diagnostic techniques and new treatments for this disease. The techniques needed to develop this line of research (bioinformatic mass sequencing and artificial intelligence) are available and becoming more reliable and more accessible every day. So, we believe our strategy is very realistic,” he added.

Although the line of research opened up by this study depicts a new scenario, the specialists still must face several challenges to discover why some smokers are more likely than others to develop lung cancer.

“There are many lines of research in this regard,” said Dr. Pérez. “But to name a few, I would draw attention to the need to increase the number of cases and controls to improve the comparison, study patients with other tumors related to tobacco use, ask new questions using the data we have already collected, and apply other genomic techniques that would allow us to perform additional studies of genetic variants that have not yet been studied. And, of course, we need to use functional studies to expand our understanding of the function and activity of the genes that have already been identified.” 

Dr. Patiño and Dr. Pérez declared that they have no relevant financial conflicts of interest.

This article was translated from the Medscape Spanish Edition. A version appeared on Medscape.com.

MADRID – Recent research has confirmed the impact of periodontitis on risk of neurologic diseases, especially the increased risks for stroke and Alzheimer’s disease.

The Spanish Society of Dentistry and Osseointegration (SEPA) and the Spanish Society of Neurology (SEN) recently released a report with the latest data on this topic. The report reviews, updates, and presents the most recent scientific evidence regarding this link. It also provides practical recommendations that, on the basis of the evidence, should be applied in dental clinics and neurology centers.

As Yago Leira, DDS, PhD, periodontist and coordinator of the SEPA-SEN working group, told this news organization, “The main takeaway from this scientific report is that patients with periodontitis are at nearly twice the risk of developing Alzheimer’s disease and at triple the risk of ischemic stroke.”

Data from the report show that individuals with periodontitis are at 2.8 times’ higher risk of ischemic stroke. The available evidence regarding hemorrhagic stroke, however, is conflicting.

How does this dental condition affect the course of cardiovascular disease? Observational studies have shown that those who have had an ischemic stroke and have a confirmed diagnosis of periodontitis are at greater risk of suffering a recurrent vascular event, worse neurologic deficit, and postictal depression than are patients without periodontitis.
 

Immune‐mediated inflammation

As far as its link to Alzheimer’s disease, meta-analyses of epidemiologic studies show that periodontitis is associated with a 1.7 times greater risk of this type of dementia and that the risk triples among patients with more serious forms of periodontitis.

Likewise, studies suggest that individuals with dementia or neurocognitive impairment are at a greater risk of suffering periodontitis. Other studies indicate that individuals with periodontitis have worse outcomes on various neuropsychological tests of cognitive function.

The current report presents the evidence from three clearly defined perspectives: The epidemiologic association between periodontitis and these neurologic diseases, the biological mechanisms that may explain this link, and interventional studies of dental treatment as a means of preventing stroke and Alzheimer’s disease.

“There is a possible biological explanation for these epidemiological findings. The report concludes that the low-grade chronic, systemic, immune-mediated inflammatory response induced by the bacteria and their endotoxins and the proinflammatory mediators circulating through the blood contributes to various biological processes that are involved in neurological impairment and cerebral ischemia,” said Dr. Leira, one of the report’s authors.

Ana Frank, MD, PhD, another author of this study, is head of the neurology department at the La Paz University Hospital in Madrid and a member of the SEPA-SEN group. She said in an interview that the main biological mechanism in stroke and Alzheimer’s disease is chronic exposure of the entire brain (vasculature, neurons, and astrocytes) to the harmful effects of periodontal infection. “Although low in intensity, this [exposure] is sufficient to set off a series of events that eventually lead to vascular endothelial injury, changes to neurons and astrocytes, and damage to the neuropil.”

As far as the evidence of an epidemiologic association between periodontitis and both neurologic diseases, Dr. Frank cited the exponential increase in risk brought on by periodontitis. She said that further epidemiologic studies are necessary to gain a better understanding of the magnitude of the problem.
 

A preventive alternative?

Dr. Leira cited evidence that periodontal treatment could provide a means of preventing stroke and dementia. He pointed out that numerous population studies have observed various oral health interventions (e.g., periodic dental prophylaxis or periodontal treatment) and regular dental visits to reduce the risk of developing dementia and stroke. “However, we don’t currently have randomized clinical trials that were designed to investigate whether periodontal treatment may be a primary or a secondary preventive measure against these neurological conditions.”

According to Dr. Leira, “There are currently several research groups in the United States and Europe, including ours, that are performing clinical trials to assess the impact of periodontal treatment on recurrent vascular events in patients with cerebrovascular disease.

“On the other hand, there are various interventional studies underway that are evaluating the potential effect of periodontal treatment on cognitive function in patients with dementia. Along these lines, there appear to be encouraging results from the 1-year follow-up in the GAIN study, which was a phase 2/3 clinical trial testing atuzaginstat. Atuzaginstat is an inhibitor of gingipain, the endotoxin produced by Porphyromonas gingivalis, which is one of the bacteria thought to be responsible for periodontitis. The drug reduces neurocognitive impairment in patients with high levels of antibodies against this periodontal pathogen.”
 

Toward clinical practice

The report has a practical focus. The intention is that this evidence will make its way into recommendations for dentists to implement in clinical practice, especially with elderly patients or patients with risk factors for stroke.

In this regard, Dr. Leira said, “On one hand, dentists have to know how to approach patients who have already suffered a stroke (most of whom have vascular risk factors like diabetes and hypertension), many of whom have polypharmacy and are [taking] certain drugs like blood thinners that could negatively impact various dental procedures. In such cases, it is important to maintain direct contact with a neurologist, since these patients ought to be treated with a multidisciplinary approach.

“On the other hand, each patient who comes to the dental office and has a diagnosis of periodontitis could be screened to identify potential vascular risk factors, even though the definitive diagnosis would need to be given by a specialist physician. To this end, SEPA is carrying out the Promosalud (“Health Promotion”) project, which will soon be applied in a large number of dental clinics in Spain,” added Dr. Leira.

“Lastly, specialists in odontology must understand the potential positive benefits surrounding systemic vascular inflammation that periodontal treatment could provide, including, for example, metabolic control and lowering blood pressure.”

For patients with cognitive impairment, the authors of the report recommended adhering to the following steps during dental visits: Inform the patient and the patient’s caregiver about the importance of good dental hygiene and monitor for any signs of infection or dental disease; address pain in every patient with cognitive impairment and dental problems, especially those with agitation, even if the patient isn’t specifically complaining of pain (also, try not to give opioids); finally, avoid sedation as much as possible and use the smallest effective dose if it becomes necessary.
 

Prescribe oral hygiene

Regarding recommendations that neurologists should follow during consultations in light of the link between these diseases and periodontitis, Dr. Frank said, “Regardless of how old our patients are, I believe it’s important to emphasize the importance of practicing good oral and dental hygiene. It’s a good strategy to put this in writing in medical reports, alongside the usual recommendations about healthy lifestyle habits and monitoring for diseases like high blood pressure, diabetes, or dyslipidemia. These, among other factors like smoking, a sedentary lifestyle, alcoholism, and other drug addictions, are vascular risk factors and are therefore risk factors for stroke and dementia.”

According to Dr. Frank, the public is largely unaware of the relationship between periodontitis and incident neurologic diseases. “We still have a long way to go before we can say that the public is aware of this potential link. And not just the public, either. I believe we must stress among our colleagues and among health care professionals in general the importance of promoting dental health to improve people’s overall health.”

In this regard, Dr. Leira emphasized the authors’ intention to make this report available not only to oral health and neurologic health care professionals but also to primary care physicians and nurses so that patients with cerebrovascular disease or Alzheimer’s disease and their caregivers can develop a greater awareness and thereby improve prevention.

“This study will also provide the scientific basis to support the SEPA-SEN working group as they implement their future activities and projects,” Dr. Leira concluded.

Dr. Leira and Dr. Frank have disclosed no relevant financial relationships.
 

This article was translated from the Medscape Spanish Edition. A version of this article appeared on Medscape.com.

MADRID – Recent research has confirmed the impact of periodontitis on risk of neurologic diseases, especially the increased risks for stroke and Alzheimer’s disease.

The Spanish Society of Dentistry and Osseointegration (SEPA) and the Spanish Society of Neurology (SEN) recently released a report with the latest data on this topic. The report reviews, updates, and presents the most recent scientific evidence regarding this link. It also provides practical recommendations that, on the basis of the evidence, should be applied in dental clinics and neurology centers.

As Yago Leira, DDS, PhD, periodontist and coordinator of the SEPA-SEN working group, told this news organization, “The main takeaway from this scientific report is that patients with periodontitis are at nearly twice the risk of developing Alzheimer’s disease and at triple the risk of ischemic stroke.”

Data from the report show that individuals with periodontitis are at 2.8 times’ higher risk of ischemic stroke. The available evidence regarding hemorrhagic stroke, however, is conflicting.

How does this dental condition affect the course of cardiovascular disease? Observational studies have shown that those who have had an ischemic stroke and have a confirmed diagnosis of periodontitis are at greater risk of suffering a recurrent vascular event, worse neurologic deficit, and postictal depression than are patients without periodontitis.
 

Immune‐mediated inflammation

As far as its link to Alzheimer’s disease, meta-analyses of epidemiologic studies show that periodontitis is associated with a 1.7 times greater risk of this type of dementia and that the risk triples among patients with more serious forms of periodontitis.

Likewise, studies suggest that individuals with dementia or neurocognitive impairment are at a greater risk of suffering periodontitis. Other studies indicate that individuals with periodontitis have worse outcomes on various neuropsychological tests of cognitive function.

The current report presents the evidence from three clearly defined perspectives: The epidemiologic association between periodontitis and these neurologic diseases, the biological mechanisms that may explain this link, and interventional studies of dental treatment as a means of preventing stroke and Alzheimer’s disease.

“There is a possible biological explanation for these epidemiological findings. The report concludes that the low-grade chronic, systemic, immune-mediated inflammatory response induced by the bacteria and their endotoxins and the proinflammatory mediators circulating through the blood contributes to various biological processes that are involved in neurological impairment and cerebral ischemia,” said Dr. Leira, one of the report’s authors.

Ana Frank, MD, PhD, another author of this study, is head of the neurology department at the La Paz University Hospital in Madrid and a member of the SEPA-SEN group. She said in an interview that the main biological mechanism in stroke and Alzheimer’s disease is chronic exposure of the entire brain (vasculature, neurons, and astrocytes) to the harmful effects of periodontal infection. “Although low in intensity, this [exposure] is sufficient to set off a series of events that eventually lead to vascular endothelial injury, changes to neurons and astrocytes, and damage to the neuropil.”

As far as the evidence of an epidemiologic association between periodontitis and both neurologic diseases, Dr. Frank cited the exponential increase in risk brought on by periodontitis. She said that further epidemiologic studies are necessary to gain a better understanding of the magnitude of the problem.
 

A preventive alternative?

Dr. Leira cited evidence that periodontal treatment could provide a means of preventing stroke and dementia. He pointed out that numerous population studies have observed various oral health interventions (e.g., periodic dental prophylaxis or periodontal treatment) and regular dental visits to reduce the risk of developing dementia and stroke. “However, we don’t currently have randomized clinical trials that were designed to investigate whether periodontal treatment may be a primary or a secondary preventive measure against these neurological conditions.”

According to Dr. Leira, “There are currently several research groups in the United States and Europe, including ours, that are performing clinical trials to assess the impact of periodontal treatment on recurrent vascular events in patients with cerebrovascular disease.

“On the other hand, there are various interventional studies underway that are evaluating the potential effect of periodontal treatment on cognitive function in patients with dementia. Along these lines, there appear to be encouraging results from the 1-year follow-up in the GAIN study, which was a phase 2/3 clinical trial testing atuzaginstat. Atuzaginstat is an inhibitor of gingipain, the endotoxin produced by Porphyromonas gingivalis, which is one of the bacteria thought to be responsible for periodontitis. The drug reduces neurocognitive impairment in patients with high levels of antibodies against this periodontal pathogen.”
 

Toward clinical practice

The report has a practical focus. The intention is that this evidence will make its way into recommendations for dentists to implement in clinical practice, especially with elderly patients or patients with risk factors for stroke.

In this regard, Dr. Leira said, “On one hand, dentists have to know how to approach patients who have already suffered a stroke (most of whom have vascular risk factors like diabetes and hypertension), many of whom have polypharmacy and are [taking] certain drugs like blood thinners that could negatively impact various dental procedures. In such cases, it is important to maintain direct contact with a neurologist, since these patients ought to be treated with a multidisciplinary approach.

“On the other hand, each patient who comes to the dental office and has a diagnosis of periodontitis could be screened to identify potential vascular risk factors, even though the definitive diagnosis would need to be given by a specialist physician. To this end, SEPA is carrying out the Promosalud (“Health Promotion”) project, which will soon be applied in a large number of dental clinics in Spain,” added Dr. Leira.

“Lastly, specialists in odontology must understand the potential positive benefits surrounding systemic vascular inflammation that periodontal treatment could provide, including, for example, metabolic control and lowering blood pressure.”

For patients with cognitive impairment, the authors of the report recommended adhering to the following steps during dental visits: Inform the patient and the patient’s caregiver about the importance of good dental hygiene and monitor for any signs of infection or dental disease; address pain in every patient with cognitive impairment and dental problems, especially those with agitation, even if the patient isn’t specifically complaining of pain (also, try not to give opioids); finally, avoid sedation as much as possible and use the smallest effective dose if it becomes necessary.
 

Prescribe oral hygiene

Regarding recommendations that neurologists should follow during consultations in light of the link between these diseases and periodontitis, Dr. Frank said, “Regardless of how old our patients are, I believe it’s important to emphasize the importance of practicing good oral and dental hygiene. It’s a good strategy to put this in writing in medical reports, alongside the usual recommendations about healthy lifestyle habits and monitoring for diseases like high blood pressure, diabetes, or dyslipidemia. These, among other factors like smoking, a sedentary lifestyle, alcoholism, and other drug addictions, are vascular risk factors and are therefore risk factors for stroke and dementia.”

According to Dr. Frank, the public is largely unaware of the relationship between periodontitis and incident neurologic diseases. “We still have a long way to go before we can say that the public is aware of this potential link. And not just the public, either. I believe we must stress among our colleagues and among health care professionals in general the importance of promoting dental health to improve people’s overall health.”

In this regard, Dr. Leira emphasized the authors’ intention to make this report available not only to oral health and neurologic health care professionals but also to primary care physicians and nurses so that patients with cerebrovascular disease or Alzheimer’s disease and their caregivers can develop a greater awareness and thereby improve prevention.

“This study will also provide the scientific basis to support the SEPA-SEN working group as they implement their future activities and projects,” Dr. Leira concluded.

Dr. Leira and Dr. Frank have disclosed no relevant financial relationships.
 

This article was translated from the Medscape Spanish Edition. A version of this article appeared on Medscape.com.

MADRID – Recent research has confirmed the impact of periodontitis on risk of neurologic diseases, especially the increased risks for stroke and Alzheimer’s disease.

The Spanish Society of Dentistry and Osseointegration (SEPA) and the Spanish Society of Neurology (SEN) recently released a report with the latest data on this topic. The report reviews, updates, and presents the most recent scientific evidence regarding this link. It also provides practical recommendations that, on the basis of the evidence, should be applied in dental clinics and neurology centers.

As Yago Leira, DDS, PhD, periodontist and coordinator of the SEPA-SEN working group, told this news organization, “The main takeaway from this scientific report is that patients with periodontitis are at nearly twice the risk of developing Alzheimer’s disease and at triple the risk of ischemic stroke.”

Data from the report show that individuals with periodontitis are at 2.8 times’ higher risk of ischemic stroke. The available evidence regarding hemorrhagic stroke, however, is conflicting.

How does this dental condition affect the course of cardiovascular disease? Observational studies have shown that those who have had an ischemic stroke and have a confirmed diagnosis of periodontitis are at greater risk of suffering a recurrent vascular event, worse neurologic deficit, and postictal depression than are patients without periodontitis.
 

Immune‐mediated inflammation

As far as its link to Alzheimer’s disease, meta-analyses of epidemiologic studies show that periodontitis is associated with a 1.7 times greater risk of this type of dementia and that the risk triples among patients with more serious forms of periodontitis.

Likewise, studies suggest that individuals with dementia or neurocognitive impairment are at a greater risk of suffering periodontitis. Other studies indicate that individuals with periodontitis have worse outcomes on various neuropsychological tests of cognitive function.

The current report presents the evidence from three clearly defined perspectives: The epidemiologic association between periodontitis and these neurologic diseases, the biological mechanisms that may explain this link, and interventional studies of dental treatment as a means of preventing stroke and Alzheimer’s disease.

“There is a possible biological explanation for these epidemiological findings. The report concludes that the low-grade chronic, systemic, immune-mediated inflammatory response induced by the bacteria and their endotoxins and the proinflammatory mediators circulating through the blood contributes to various biological processes that are involved in neurological impairment and cerebral ischemia,” said Dr. Leira, one of the report’s authors.

Ana Frank, MD, PhD, another author of this study, is head of the neurology department at the La Paz University Hospital in Madrid and a member of the SEPA-SEN group. She said in an interview that the main biological mechanism in stroke and Alzheimer’s disease is chronic exposure of the entire brain (vasculature, neurons, and astrocytes) to the harmful effects of periodontal infection. “Although low in intensity, this [exposure] is sufficient to set off a series of events that eventually lead to vascular endothelial injury, changes to neurons and astrocytes, and damage to the neuropil.”

As far as the evidence of an epidemiologic association between periodontitis and both neurologic diseases, Dr. Frank cited the exponential increase in risk brought on by periodontitis. She said that further epidemiologic studies are necessary to gain a better understanding of the magnitude of the problem.
 

A preventive alternative?

Dr. Leira cited evidence that periodontal treatment could provide a means of preventing stroke and dementia. He pointed out that numerous population studies have observed various oral health interventions (e.g., periodic dental prophylaxis or periodontal treatment) and regular dental visits to reduce the risk of developing dementia and stroke. “However, we don’t currently have randomized clinical trials that were designed to investigate whether periodontal treatment may be a primary or a secondary preventive measure against these neurological conditions.”

According to Dr. Leira, “There are currently several research groups in the United States and Europe, including ours, that are performing clinical trials to assess the impact of periodontal treatment on recurrent vascular events in patients with cerebrovascular disease.

“On the other hand, there are various interventional studies underway that are evaluating the potential effect of periodontal treatment on cognitive function in patients with dementia. Along these lines, there appear to be encouraging results from the 1-year follow-up in the GAIN study, which was a phase 2/3 clinical trial testing atuzaginstat. Atuzaginstat is an inhibitor of gingipain, the endotoxin produced by Porphyromonas gingivalis, which is one of the bacteria thought to be responsible for periodontitis. The drug reduces neurocognitive impairment in patients with high levels of antibodies against this periodontal pathogen.”
 

Toward clinical practice

The report has a practical focus. The intention is that this evidence will make its way into recommendations for dentists to implement in clinical practice, especially with elderly patients or patients with risk factors for stroke.

In this regard, Dr. Leira said, “On one hand, dentists have to know how to approach patients who have already suffered a stroke (most of whom have vascular risk factors like diabetes and hypertension), many of whom have polypharmacy and are [taking] certain drugs like blood thinners that could negatively impact various dental procedures. In such cases, it is important to maintain direct contact with a neurologist, since these patients ought to be treated with a multidisciplinary approach.

“On the other hand, each patient who comes to the dental office and has a diagnosis of periodontitis could be screened to identify potential vascular risk factors, even though the definitive diagnosis would need to be given by a specialist physician. To this end, SEPA is carrying out the Promosalud (“Health Promotion”) project, which will soon be applied in a large number of dental clinics in Spain,” added Dr. Leira.

“Lastly, specialists in odontology must understand the potential positive benefits surrounding systemic vascular inflammation that periodontal treatment could provide, including, for example, metabolic control and lowering blood pressure.”

For patients with cognitive impairment, the authors of the report recommended adhering to the following steps during dental visits: Inform the patient and the patient’s caregiver about the importance of good dental hygiene and monitor for any signs of infection or dental disease; address pain in every patient with cognitive impairment and dental problems, especially those with agitation, even if the patient isn’t specifically complaining of pain (also, try not to give opioids); finally, avoid sedation as much as possible and use the smallest effective dose if it becomes necessary.
 

Prescribe oral hygiene

Regarding recommendations that neurologists should follow during consultations in light of the link between these diseases and periodontitis, Dr. Frank said, “Regardless of how old our patients are, I believe it’s important to emphasize the importance of practicing good oral and dental hygiene. It’s a good strategy to put this in writing in medical reports, alongside the usual recommendations about healthy lifestyle habits and monitoring for diseases like high blood pressure, diabetes, or dyslipidemia. These, among other factors like smoking, a sedentary lifestyle, alcoholism, and other drug addictions, are vascular risk factors and are therefore risk factors for stroke and dementia.”

According to Dr. Frank, the public is largely unaware of the relationship between periodontitis and incident neurologic diseases. “We still have a long way to go before we can say that the public is aware of this potential link. And not just the public, either. I believe we must stress among our colleagues and among health care professionals in general the importance of promoting dental health to improve people’s overall health.”

In this regard, Dr. Leira emphasized the authors’ intention to make this report available not only to oral health and neurologic health care professionals but also to primary care physicians and nurses so that patients with cerebrovascular disease or Alzheimer’s disease and their caregivers can develop a greater awareness and thereby improve prevention.

“This study will also provide the scientific basis to support the SEPA-SEN working group as they implement their future activities and projects,” Dr. Leira concluded.

Dr. Leira and Dr. Frank have disclosed no relevant financial relationships.
 

This article was translated from the Medscape Spanish Edition. A version of this article appeared on Medscape.com.

MADRID – With type 1 diabetes, there can be great differences in terms of epidemiology, genetics, and possible constituent causes, as well as in the course of the disease before and after diagnosis. This point was made evident in the Can We Perform Precision Medicine in T1D? conference.

At the 63rd Congress of the Spanish Society of Endocrinology (SEEN), María José Redondo, MD, PhD, director of research in the division of diabetes and endocrinology at Texas Children’s Hospital Baylor College of Medicine in Houston, noted that delving into this evidence is the “clue” to implementing precision medicine strategies.

“Physiopathologically, there are different forms of type 1 diabetes that must be considered in the therapeutic approach. The objective is to describe this heterogeneity to discover the etiopathogenesis underlying it, so that endotypes can be defined and thus apply precision medicine. This is the paradigm followed by the European Association for the Study of Diabetes (EASD), the American Diabetes Association (ADA), and other organizations,” said Dr. Redondo.

She added that there have been significant advances in knowledge of factors that account for these epidemiologic and genetic variations. “For example, immunological processes appear to be different in children who develop type 1 diabetes at a young age, compared with those who present with the disease later in life.”

Metabolic factors are also involved in the development of type 1 diabetes in adolescents and adults, “and this metabolic heterogeneity is a very important aspect, since we currently use only glucose to diagnose diabetes and especially to classify it as type 1 when other factors should really be measured, such as C-peptide, since it has been seen that people with high levels of this peptide present a process that is closer to type 2 diabetes and have atypical characteristics for type 1 diabetes that are more like type 2 diabetes (obesity, older age, lack of typically genetic factors associated with type 1 diabetes),” noted Dr. Redondo.
 

Eluding classification

The specialist added that this evidence suggests a need to review the classification of the different types of diabetes. “The current general classification distinguishes type 1 diabetes, type 2 diabetes, gestational diabetes, monogenic (neonatal) diabetes, monogenic diabetes associated with cystic fibrosis, pancreatogenic, steroid-induced, and posttransplantation diabetes. However, in clinical practice, cases that are very difficult to diagnose and classify emerge, such as autoimmune diabetes, type 1 diabetes in people with insulin resistance, positive antibodies for type 2 diabetes, for example, in children with obesity (in which it is not known whether it is type 1 or type 2 diabetes), drug-induced diabetes in cases of insulin resistance, autoimmune type 1 diabetes with persistent C-peptide, or monogenic diabetes in people with obesity.

“Therefore, the current classification does not help to guide prevention or treatment, and the heterogeneity of the pathology is not as clear as we would like. Since, for example, insulin resistance affects both types of diabetes, inflammation exists in both cases, and the genes that give beta cell secretion defects exist in monogenic diabetes and probably in type 2 diabetes as well. It can be argued that type 2 diabetes is like a backdrop to a lot of diabetes that we know of so far and that it interacts with other factors that have happened to the particular person,” said Dr. Redondo.

“Furthermore, it has been shown that metformin can improve insulin resistance and cardiovascular events in patients with type 1 diabetes with obesity. On the other hand, most patients with type 2 diabetes do not need insulin after diagnosis, except for pediatric patients and those with positive antibodies who require insulin quickly. Added to this is the inability to differentiate between responders and nonresponders to immunomodulators in the prevention of type 1 diabetes, all of which highlights that there are pathogenic processes that can appear in different types of diabetes, which is why the current classification leaves out cases that do not clearly fit into a single disease type, while many people with the same diagnosis actually have very different diseases,” she pointed out.
 

Toward precision diagnostics

“Encapsulating” all these factors is the first step to applying precision medicine in type 1 diabetes, an area, Dr. Redondo explained, in which concrete actions are being carried out. “One of these actions is to determine BMI [body mass index], which has been incorporated into the diabetes prediction strategy that we use in clinical trials, since we know that people with a high BMI, along with other factors, clearly have a different risk. Likewise, we’ve seen that teplizumab could work better in the prevention of type 1 diabetes in individuals with anti-islet antibodies and that people who have the DR4 gene respond better than those who don’t have it and that those with the DR3 gene respond worse.”

Other recent advances along these lines involve the identification of treatments that can delay or even prevent the development of type 1 diabetes in people with positive antibodies, as well as the development of algorithms and models to predict who will develop the disease, thus placing preventive treatments within reach.

“The objective is to use all available information from each individual to understand the etiology and pathogenesis of the disease at a given moment, knowing that changes occur throughout life, and this also applies to other types of diabetes. The next step is to discover and test pathogenesis-focused therapeutic strategies with the most clinical impact in each patient at any given time,” said Dr. Redondo.
 

Technological tools

The specialist referred to recent advances in diabetes technology, especially semiclosed systems (such as a sensor/pump) that, in her opinion, have radically changed the control of the disease. “However, the main objective is to make type 1 diabetes preventable or reversible in people who have developed it,” she said.

Fernando Gómez-Peralta, MD, PhD, elected coordinator of the Diabetes Department at SEEN and head of the endocrinology and nutrition unit of General Hospital of Segovia, Spain, spoke about these technological advances in his presentation, “Technology and Diabetes: Clinical Experiences,” which was organized in collaboration with the Spanish Diabetes Society.

According to this expert, technological and digital tools are changing the daily lives of people with this disease. “Continuous glucose monitoring and new connected insulin pen and cap systems have increased the benefits for users of treatment with new insulins, for example,” said Dr. Gómez-Peralta.

He explained that most systems make it possible to access complete data regarding glycemic control and the treatment received and to share them with caregivers, professionals, and family members. “Some integrated insulin pump and sensor systems have self-adjusting insulin therapy algorithms that have been shown to greatly increase time-to-target glucose and reduce hypoglycemic events,” he said.

“Regarding glucose monitoring, there are devices with a longer duration (up to 2 weeks) and precision that are characterized by easier use for the patient, avoiding the need for calibration, with annoying capillary blood glucose levels.”

In the case of insulin administration, it is anticipated that in the future, some models will have very interesting features, Dr. Gómez-Peralta said. “Integrated closed-loop glucose sensor and insulin pump systems that have self-adjusting algorithms, regardless of the user, are highly effective and safe, and clearly improve glycemic control.

“For users of insulin injections, connected pens allow the integration of dynamic glucose information with doses, as well as the integration of user support tools for insulin adjustment,” Dr. Gómez-Peralta added.

The specialist stressed that a challenge for the future is to reduce the digital divide so as to increase the capacity and motivation to access these options. “In the coming years, health systems will have to face significant cost so that these systems are made available to all patients, and it is necessary to provide the systems with more material and human resources so that they can be integrated with our endocrinology and diabetes services and units.”

Dr. Redondo and Dr. Gómez-Peralta have disclosed no relevant financial relationships.

This article was translated from the Medscape Spanish edition and a version appeared on Medscape.com.

MADRID – With type 1 diabetes, there can be great differences in terms of epidemiology, genetics, and possible constituent causes, as well as in the course of the disease before and after diagnosis. This point was made evident in the Can We Perform Precision Medicine in T1D? conference.

At the 63rd Congress of the Spanish Society of Endocrinology (SEEN), María José Redondo, MD, PhD, director of research in the division of diabetes and endocrinology at Texas Children’s Hospital Baylor College of Medicine in Houston, noted that delving into this evidence is the “clue” to implementing precision medicine strategies.

“Physiopathologically, there are different forms of type 1 diabetes that must be considered in the therapeutic approach. The objective is to describe this heterogeneity to discover the etiopathogenesis underlying it, so that endotypes can be defined and thus apply precision medicine. This is the paradigm followed by the European Association for the Study of Diabetes (EASD), the American Diabetes Association (ADA), and other organizations,” said Dr. Redondo.

She added that there have been significant advances in knowledge of factors that account for these epidemiologic and genetic variations. “For example, immunological processes appear to be different in children who develop type 1 diabetes at a young age, compared with those who present with the disease later in life.”

Metabolic factors are also involved in the development of type 1 diabetes in adolescents and adults, “and this metabolic heterogeneity is a very important aspect, since we currently use only glucose to diagnose diabetes and especially to classify it as type 1 when other factors should really be measured, such as C-peptide, since it has been seen that people with high levels of this peptide present a process that is closer to type 2 diabetes and have atypical characteristics for type 1 diabetes that are more like type 2 diabetes (obesity, older age, lack of typically genetic factors associated with type 1 diabetes),” noted Dr. Redondo.
 

Eluding classification

The specialist added that this evidence suggests a need to review the classification of the different types of diabetes. “The current general classification distinguishes type 1 diabetes, type 2 diabetes, gestational diabetes, monogenic (neonatal) diabetes, monogenic diabetes associated with cystic fibrosis, pancreatogenic, steroid-induced, and posttransplantation diabetes. However, in clinical practice, cases that are very difficult to diagnose and classify emerge, such as autoimmune diabetes, type 1 diabetes in people with insulin resistance, positive antibodies for type 2 diabetes, for example, in children with obesity (in which it is not known whether it is type 1 or type 2 diabetes), drug-induced diabetes in cases of insulin resistance, autoimmune type 1 diabetes with persistent C-peptide, or monogenic diabetes in people with obesity.

“Therefore, the current classification does not help to guide prevention or treatment, and the heterogeneity of the pathology is not as clear as we would like. Since, for example, insulin resistance affects both types of diabetes, inflammation exists in both cases, and the genes that give beta cell secretion defects exist in monogenic diabetes and probably in type 2 diabetes as well. It can be argued that type 2 diabetes is like a backdrop to a lot of diabetes that we know of so far and that it interacts with other factors that have happened to the particular person,” said Dr. Redondo.

“Furthermore, it has been shown that metformin can improve insulin resistance and cardiovascular events in patients with type 1 diabetes with obesity. On the other hand, most patients with type 2 diabetes do not need insulin after diagnosis, except for pediatric patients and those with positive antibodies who require insulin quickly. Added to this is the inability to differentiate between responders and nonresponders to immunomodulators in the prevention of type 1 diabetes, all of which highlights that there are pathogenic processes that can appear in different types of diabetes, which is why the current classification leaves out cases that do not clearly fit into a single disease type, while many people with the same diagnosis actually have very different diseases,” she pointed out.
 

Toward precision diagnostics

“Encapsulating” all these factors is the first step to applying precision medicine in type 1 diabetes, an area, Dr. Redondo explained, in which concrete actions are being carried out. “One of these actions is to determine BMI [body mass index], which has been incorporated into the diabetes prediction strategy that we use in clinical trials, since we know that people with a high BMI, along with other factors, clearly have a different risk. Likewise, we’ve seen that teplizumab could work better in the prevention of type 1 diabetes in individuals with anti-islet antibodies and that people who have the DR4 gene respond better than those who don’t have it and that those with the DR3 gene respond worse.”

Other recent advances along these lines involve the identification of treatments that can delay or even prevent the development of type 1 diabetes in people with positive antibodies, as well as the development of algorithms and models to predict who will develop the disease, thus placing preventive treatments within reach.

“The objective is to use all available information from each individual to understand the etiology and pathogenesis of the disease at a given moment, knowing that changes occur throughout life, and this also applies to other types of diabetes. The next step is to discover and test pathogenesis-focused therapeutic strategies with the most clinical impact in each patient at any given time,” said Dr. Redondo.
 

Technological tools

The specialist referred to recent advances in diabetes technology, especially semiclosed systems (such as a sensor/pump) that, in her opinion, have radically changed the control of the disease. “However, the main objective is to make type 1 diabetes preventable or reversible in people who have developed it,” she said.

Fernando Gómez-Peralta, MD, PhD, elected coordinator of the Diabetes Department at SEEN and head of the endocrinology and nutrition unit of General Hospital of Segovia, Spain, spoke about these technological advances in his presentation, “Technology and Diabetes: Clinical Experiences,” which was organized in collaboration with the Spanish Diabetes Society.

According to this expert, technological and digital tools are changing the daily lives of people with this disease. “Continuous glucose monitoring and new connected insulin pen and cap systems have increased the benefits for users of treatment with new insulins, for example,” said Dr. Gómez-Peralta.

He explained that most systems make it possible to access complete data regarding glycemic control and the treatment received and to share them with caregivers, professionals, and family members. “Some integrated insulin pump and sensor systems have self-adjusting insulin therapy algorithms that have been shown to greatly increase time-to-target glucose and reduce hypoglycemic events,” he said.

“Regarding glucose monitoring, there are devices with a longer duration (up to 2 weeks) and precision that are characterized by easier use for the patient, avoiding the need for calibration, with annoying capillary blood glucose levels.”

In the case of insulin administration, it is anticipated that in the future, some models will have very interesting features, Dr. Gómez-Peralta said. “Integrated closed-loop glucose sensor and insulin pump systems that have self-adjusting algorithms, regardless of the user, are highly effective and safe, and clearly improve glycemic control.

“For users of insulin injections, connected pens allow the integration of dynamic glucose information with doses, as well as the integration of user support tools for insulin adjustment,” Dr. Gómez-Peralta added.

The specialist stressed that a challenge for the future is to reduce the digital divide so as to increase the capacity and motivation to access these options. “In the coming years, health systems will have to face significant cost so that these systems are made available to all patients, and it is necessary to provide the systems with more material and human resources so that they can be integrated with our endocrinology and diabetes services and units.”

Dr. Redondo and Dr. Gómez-Peralta have disclosed no relevant financial relationships.

This article was translated from the Medscape Spanish edition and a version appeared on Medscape.com.

MADRID – With type 1 diabetes, there can be great differences in terms of epidemiology, genetics, and possible constituent causes, as well as in the course of the disease before and after diagnosis. This point was made evident in the Can We Perform Precision Medicine in T1D? conference.

At the 63rd Congress of the Spanish Society of Endocrinology (SEEN), María José Redondo, MD, PhD, director of research in the division of diabetes and endocrinology at Texas Children’s Hospital Baylor College of Medicine in Houston, noted that delving into this evidence is the “clue” to implementing precision medicine strategies.

“Physiopathologically, there are different forms of type 1 diabetes that must be considered in the therapeutic approach. The objective is to describe this heterogeneity to discover the etiopathogenesis underlying it, so that endotypes can be defined and thus apply precision medicine. This is the paradigm followed by the European Association for the Study of Diabetes (EASD), the American Diabetes Association (ADA), and other organizations,” said Dr. Redondo.

She added that there have been significant advances in knowledge of factors that account for these epidemiologic and genetic variations. “For example, immunological processes appear to be different in children who develop type 1 diabetes at a young age, compared with those who present with the disease later in life.”

Metabolic factors are also involved in the development of type 1 diabetes in adolescents and adults, “and this metabolic heterogeneity is a very important aspect, since we currently use only glucose to diagnose diabetes and especially to classify it as type 1 when other factors should really be measured, such as C-peptide, since it has been seen that people with high levels of this peptide present a process that is closer to type 2 diabetes and have atypical characteristics for type 1 diabetes that are more like type 2 diabetes (obesity, older age, lack of typically genetic factors associated with type 1 diabetes),” noted Dr. Redondo.
 

Eluding classification

The specialist added that this evidence suggests a need to review the classification of the different types of diabetes. “The current general classification distinguishes type 1 diabetes, type 2 diabetes, gestational diabetes, monogenic (neonatal) diabetes, monogenic diabetes associated with cystic fibrosis, pancreatogenic, steroid-induced, and posttransplantation diabetes. However, in clinical practice, cases that are very difficult to diagnose and classify emerge, such as autoimmune diabetes, type 1 diabetes in people with insulin resistance, positive antibodies for type 2 diabetes, for example, in children with obesity (in which it is not known whether it is type 1 or type 2 diabetes), drug-induced diabetes in cases of insulin resistance, autoimmune type 1 diabetes with persistent C-peptide, or monogenic diabetes in people with obesity.

“Therefore, the current classification does not help to guide prevention or treatment, and the heterogeneity of the pathology is not as clear as we would like. Since, for example, insulin resistance affects both types of diabetes, inflammation exists in both cases, and the genes that give beta cell secretion defects exist in monogenic diabetes and probably in type 2 diabetes as well. It can be argued that type 2 diabetes is like a backdrop to a lot of diabetes that we know of so far and that it interacts with other factors that have happened to the particular person,” said Dr. Redondo.

“Furthermore, it has been shown that metformin can improve insulin resistance and cardiovascular events in patients with type 1 diabetes with obesity. On the other hand, most patients with type 2 diabetes do not need insulin after diagnosis, except for pediatric patients and those with positive antibodies who require insulin quickly. Added to this is the inability to differentiate between responders and nonresponders to immunomodulators in the prevention of type 1 diabetes, all of which highlights that there are pathogenic processes that can appear in different types of diabetes, which is why the current classification leaves out cases that do not clearly fit into a single disease type, while many people with the same diagnosis actually have very different diseases,” she pointed out.
 

Toward precision diagnostics

“Encapsulating” all these factors is the first step to applying precision medicine in type 1 diabetes, an area, Dr. Redondo explained, in which concrete actions are being carried out. “One of these actions is to determine BMI [body mass index], which has been incorporated into the diabetes prediction strategy that we use in clinical trials, since we know that people with a high BMI, along with other factors, clearly have a different risk. Likewise, we’ve seen that teplizumab could work better in the prevention of type 1 diabetes in individuals with anti-islet antibodies and that people who have the DR4 gene respond better than those who don’t have it and that those with the DR3 gene respond worse.”

Other recent advances along these lines involve the identification of treatments that can delay or even prevent the development of type 1 diabetes in people with positive antibodies, as well as the development of algorithms and models to predict who will develop the disease, thus placing preventive treatments within reach.

“The objective is to use all available information from each individual to understand the etiology and pathogenesis of the disease at a given moment, knowing that changes occur throughout life, and this also applies to other types of diabetes. The next step is to discover and test pathogenesis-focused therapeutic strategies with the most clinical impact in each patient at any given time,” said Dr. Redondo.
 

Technological tools

The specialist referred to recent advances in diabetes technology, especially semiclosed systems (such as a sensor/pump) that, in her opinion, have radically changed the control of the disease. “However, the main objective is to make type 1 diabetes preventable or reversible in people who have developed it,” she said.

Fernando Gómez-Peralta, MD, PhD, elected coordinator of the Diabetes Department at SEEN and head of the endocrinology and nutrition unit of General Hospital of Segovia, Spain, spoke about these technological advances in his presentation, “Technology and Diabetes: Clinical Experiences,” which was organized in collaboration with the Spanish Diabetes Society.

According to this expert, technological and digital tools are changing the daily lives of people with this disease. “Continuous glucose monitoring and new connected insulin pen and cap systems have increased the benefits for users of treatment with new insulins, for example,” said Dr. Gómez-Peralta.

He explained that most systems make it possible to access complete data regarding glycemic control and the treatment received and to share them with caregivers, professionals, and family members. “Some integrated insulin pump and sensor systems have self-adjusting insulin therapy algorithms that have been shown to greatly increase time-to-target glucose and reduce hypoglycemic events,” he said.

“Regarding glucose monitoring, there are devices with a longer duration (up to 2 weeks) and precision that are characterized by easier use for the patient, avoiding the need for calibration, with annoying capillary blood glucose levels.”

In the case of insulin administration, it is anticipated that in the future, some models will have very interesting features, Dr. Gómez-Peralta said. “Integrated closed-loop glucose sensor and insulin pump systems that have self-adjusting algorithms, regardless of the user, are highly effective and safe, and clearly improve glycemic control.

“For users of insulin injections, connected pens allow the integration of dynamic glucose information with doses, as well as the integration of user support tools for insulin adjustment,” Dr. Gómez-Peralta added.

The specialist stressed that a challenge for the future is to reduce the digital divide so as to increase the capacity and motivation to access these options. “In the coming years, health systems will have to face significant cost so that these systems are made available to all patients, and it is necessary to provide the systems with more material and human resources so that they can be integrated with our endocrinology and diabetes services and units.”

Dr. Redondo and Dr. Gómez-Peralta have disclosed no relevant financial relationships.

This article was translated from the Medscape Spanish edition and a version appeared on Medscape.com.

Skin manifestations of COVID-19 were among the topics presented in several sessions at the 49th Congress of the Spanish Academy of Dermatology and Venereology. Specialists agreed that fewer skin changes associated with this virus have been seen with the latest variants of SARS-CoV-2. They highlighted the results of the most remarkable research on this topic that were presented in this forum.

In the study, which was carried out by Spanish dermatologists with the support of the AEDV, researchers analyzed skin reactions associated with the COVID-19 vaccine.

Study author Cristina Galván, MD, a dermatologist at the University Hospital of Móstoles, Madrid, said, “This is the first study that analyzes a significant number of cases assessed by dermatologists and illustrated with clinical images of the dermatological manifestations caused as a reaction to these vaccines.”

The study was carried out during the first months of COVID-19 vaccination, Dr. Galván told this news organization. It was proposed as a continuation of a COVID skin study that was published in the British Journal of Dermatology. That study documented the first classification of skin lesions associated with COVID-19. Dr. Galván is the lead author of the latter study.

“The objectives of this study were to characterize and classify skin reactions after vaccination, identify their chronology, and analyze the associations with a series of antecedents: dermatological and allergic diseases, previous SARS-CoV-2 infection, and skin reactions associated with COVID-19,” said Dr. Galván. The study was a team effort, she added.

“It was conducted between Feb. 15 and May 12, 2021, and information was gathered on 405 reactions that appeared during the 21 days after any dose of the COVID-19 vaccines approved at that time in Spain: the Pfizer/BioNTech, Moderna, and University of Oxford/AstraZeneca vaccines,” she added.

Dr. Galván explained that the study shows very clear patterns and investigators reached conclusions that match those of other groups that have investigated this topic. “Six reaction patterns were described according to their frequency. The first is the ‘COVID-19 arm,’ which consists of a local reaction at the injection site and occurs almost exclusively in women and in 70% of cases after inoculation with the Moderna serum. It is a manifestation that resolves well and does not always recur in subsequent doses. More than half are of delayed onset: biopsied patients show signs of a delayed hypersensitivity reaction. In line with all the publications in this regard, it was found that this reaction is not a reason to skip or delay a dose.”
 

Herpes zoster reactivation

The second pattern is urticarial, which, according to the specialist, occurs with equal frequency after the administration of all vaccines and is well controlled with antihistamines. “This is a very nonspecific pattern, which does not prevent it from still being frequent. It was not associated with drug intake.

“The morbilliform pattern is more frequent after the Pfizer/BioNTech and AstraZeneca vaccines. It affects the trunk and extremities, and up to a quarter of the cases required systemic corticosteroids. The papulovesicular and pityriasis rosea–like patterns are equally frequent in all vaccines. The latter is found in a younger age group. Finally, there is the purpuric pattern, more localized in the extremities and more frequent after the Pfizer/BioNTech and AstraZeneca vaccines. On biopsy, this pattern showed small-vessel vasculitis.”

Less frequently, reactivations or de novo onset of different dermatologic diseases were found. “Varicella-zoster virus reactivations were observed with a frequency of 13.8%, being more common after the Pfizer/BioNTech vaccine,” said Dr. Galván. “Other studies have corroborated this increase in herpes zoster, although it has been seen that the absolute number is low, so the benefits of the vaccine outweigh this eventual complication. At the same time and along the same lines, vaccination against herpes zoster is recommended for those over 50 years of age.”

Another fact revealed by the study is that these reactions were not significantly more severe in people with dermatologic diseases, those with previous infection, or those with skin manifestation associated with COVID-19.

Dr. Galván highlighted that, except for the COVID-19 arm, these patterns were among those associated with the disease, “which supports [the idea] that it does not demonstrate that the host’s immune reaction to the infection was playing a role.”
 

Women and young people

“As for pseudoperniosis, it is poorly represented in our series: 0.7% compared to 2% in the American registry. Although neither the SARS-CoV-2–pseudoperniosis association nor its pathophysiology is clear, the idea is that if this manifestation is related to the host’s immune response during infection, pseudoperniosis after vaccination could also be linked to the immune response to the vaccine,” said Dr. Galván.

Many of these reactions are more intense in women. “Before starting to use these vaccines, we already knew that messenger RNA vaccines (a powerful activator of innate immunity) induce frequent reactions, that adjuvants and excipients (polyethylene glycol and polysorbate) also generate them, and that other factors influence reactogenicity, among those of us of the same age and sex, reactions being more frequent in younger people and in women,” said Dr. Galván. “This may be one of the reasons why the COVID-19 arm is so much more prevalent in the female population and that 80% of all reactions that were collected were in women.”

In relation to the fact that manifestations differed, depending on the type of inoculated serum, Dr. Galván said, “Some reactions are just as common after any of the vaccines. However, others are not, as is the case with the COVID-19 arm for the Moderna vaccine or reactivations of the herpes virus, more frequent after the Pfizer/BioNTech vaccine.

“Undoubtedly, behind these differences are particularities in the immune reaction caused by each of the vaccines and their composition, including the excipients,” she said.

Regarding the fact that these reactions were the same throughout the vaccine regimen or that they varied in intensity, depending on the dose, Dr. Galván said, “In our study, as in those carried out by other groups, there were no significant differences in terms of frequency after the first and second doses. One thing to keep in mind is that, due to the temporary design of our study and the time at which it was conducted, it was not possible to collect reactions after second doses of AstraZeneca.

“Manifestations have generally been mild and well controlled. Many of them did not recur after the second dose, and the vast majority did not prevent completion of the vaccination scheme, but we must not lose sight of the fact that 20% of these manifestations were assessed by the dermatologist as serious or very serious,” Dr. Galván added.

Regarding the next steps planned for this line of research, Dr. Galván commented, “We are awaiting the evolution of the reported cases and the reactions that may arise, although for now, our group does not have any open studies. The most important thing now is to be alert and report the data observed in the pharmacovigilance systems, in open registries, and in scientific literature to generate evidence.”

Dr. Galván has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Skin manifestations of COVID-19 were among the topics presented in several sessions at the 49th Congress of the Spanish Academy of Dermatology and Venereology. Specialists agreed that fewer skin changes associated with this virus have been seen with the latest variants of SARS-CoV-2. They highlighted the results of the most remarkable research on this topic that were presented in this forum.

In the study, which was carried out by Spanish dermatologists with the support of the AEDV, researchers analyzed skin reactions associated with the COVID-19 vaccine.

Study author Cristina Galván, MD, a dermatologist at the University Hospital of Móstoles, Madrid, said, “This is the first study that analyzes a significant number of cases assessed by dermatologists and illustrated with clinical images of the dermatological manifestations caused as a reaction to these vaccines.”

The study was carried out during the first months of COVID-19 vaccination, Dr. Galván told this news organization. It was proposed as a continuation of a COVID skin study that was published in the British Journal of Dermatology. That study documented the first classification of skin lesions associated with COVID-19. Dr. Galván is the lead author of the latter study.

“The objectives of this study were to characterize and classify skin reactions after vaccination, identify their chronology, and analyze the associations with a series of antecedents: dermatological and allergic diseases, previous SARS-CoV-2 infection, and skin reactions associated with COVID-19,” said Dr. Galván. The study was a team effort, she added.

“It was conducted between Feb. 15 and May 12, 2021, and information was gathered on 405 reactions that appeared during the 21 days after any dose of the COVID-19 vaccines approved at that time in Spain: the Pfizer/BioNTech, Moderna, and University of Oxford/AstraZeneca vaccines,” she added.

Dr. Galván explained that the study shows very clear patterns and investigators reached conclusions that match those of other groups that have investigated this topic. “Six reaction patterns were described according to their frequency. The first is the ‘COVID-19 arm,’ which consists of a local reaction at the injection site and occurs almost exclusively in women and in 70% of cases after inoculation with the Moderna serum. It is a manifestation that resolves well and does not always recur in subsequent doses. More than half are of delayed onset: biopsied patients show signs of a delayed hypersensitivity reaction. In line with all the publications in this regard, it was found that this reaction is not a reason to skip or delay a dose.”
 

Herpes zoster reactivation

The second pattern is urticarial, which, according to the specialist, occurs with equal frequency after the administration of all vaccines and is well controlled with antihistamines. “This is a very nonspecific pattern, which does not prevent it from still being frequent. It was not associated with drug intake.

“The morbilliform pattern is more frequent after the Pfizer/BioNTech and AstraZeneca vaccines. It affects the trunk and extremities, and up to a quarter of the cases required systemic corticosteroids. The papulovesicular and pityriasis rosea–like patterns are equally frequent in all vaccines. The latter is found in a younger age group. Finally, there is the purpuric pattern, more localized in the extremities and more frequent after the Pfizer/BioNTech and AstraZeneca vaccines. On biopsy, this pattern showed small-vessel vasculitis.”

Less frequently, reactivations or de novo onset of different dermatologic diseases were found. “Varicella-zoster virus reactivations were observed with a frequency of 13.8%, being more common after the Pfizer/BioNTech vaccine,” said Dr. Galván. “Other studies have corroborated this increase in herpes zoster, although it has been seen that the absolute number is low, so the benefits of the vaccine outweigh this eventual complication. At the same time and along the same lines, vaccination against herpes zoster is recommended for those over 50 years of age.”

Another fact revealed by the study is that these reactions were not significantly more severe in people with dermatologic diseases, those with previous infection, or those with skin manifestation associated with COVID-19.

Dr. Galván highlighted that, except for the COVID-19 arm, these patterns were among those associated with the disease, “which supports [the idea] that it does not demonstrate that the host’s immune reaction to the infection was playing a role.”
 

Women and young people

“As for pseudoperniosis, it is poorly represented in our series: 0.7% compared to 2% in the American registry. Although neither the SARS-CoV-2–pseudoperniosis association nor its pathophysiology is clear, the idea is that if this manifestation is related to the host’s immune response during infection, pseudoperniosis after vaccination could also be linked to the immune response to the vaccine,” said Dr. Galván.

Many of these reactions are more intense in women. “Before starting to use these vaccines, we already knew that messenger RNA vaccines (a powerful activator of innate immunity) induce frequent reactions, that adjuvants and excipients (polyethylene glycol and polysorbate) also generate them, and that other factors influence reactogenicity, among those of us of the same age and sex, reactions being more frequent in younger people and in women,” said Dr. Galván. “This may be one of the reasons why the COVID-19 arm is so much more prevalent in the female population and that 80% of all reactions that were collected were in women.”

In relation to the fact that manifestations differed, depending on the type of inoculated serum, Dr. Galván said, “Some reactions are just as common after any of the vaccines. However, others are not, as is the case with the COVID-19 arm for the Moderna vaccine or reactivations of the herpes virus, more frequent after the Pfizer/BioNTech vaccine.

“Undoubtedly, behind these differences are particularities in the immune reaction caused by each of the vaccines and their composition, including the excipients,” she said.

Regarding the fact that these reactions were the same throughout the vaccine regimen or that they varied in intensity, depending on the dose, Dr. Galván said, “In our study, as in those carried out by other groups, there were no significant differences in terms of frequency after the first and second doses. One thing to keep in mind is that, due to the temporary design of our study and the time at which it was conducted, it was not possible to collect reactions after second doses of AstraZeneca.

“Manifestations have generally been mild and well controlled. Many of them did not recur after the second dose, and the vast majority did not prevent completion of the vaccination scheme, but we must not lose sight of the fact that 20% of these manifestations were assessed by the dermatologist as serious or very serious,” Dr. Galván added.

Regarding the next steps planned for this line of research, Dr. Galván commented, “We are awaiting the evolution of the reported cases and the reactions that may arise, although for now, our group does not have any open studies. The most important thing now is to be alert and report the data observed in the pharmacovigilance systems, in open registries, and in scientific literature to generate evidence.”

Dr. Galván has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Skin manifestations of COVID-19 were among the topics presented in several sessions at the 49th Congress of the Spanish Academy of Dermatology and Venereology. Specialists agreed that fewer skin changes associated with this virus have been seen with the latest variants of SARS-CoV-2. They highlighted the results of the most remarkable research on this topic that were presented in this forum.

In the study, which was carried out by Spanish dermatologists with the support of the AEDV, researchers analyzed skin reactions associated with the COVID-19 vaccine.

Study author Cristina Galván, MD, a dermatologist at the University Hospital of Móstoles, Madrid, said, “This is the first study that analyzes a significant number of cases assessed by dermatologists and illustrated with clinical images of the dermatological manifestations caused as a reaction to these vaccines.”

The study was carried out during the first months of COVID-19 vaccination, Dr. Galván told this news organization. It was proposed as a continuation of a COVID skin study that was published in the British Journal of Dermatology. That study documented the first classification of skin lesions associated with COVID-19. Dr. Galván is the lead author of the latter study.

“The objectives of this study were to characterize and classify skin reactions after vaccination, identify their chronology, and analyze the associations with a series of antecedents: dermatological and allergic diseases, previous SARS-CoV-2 infection, and skin reactions associated with COVID-19,” said Dr. Galván. The study was a team effort, she added.

“It was conducted between Feb. 15 and May 12, 2021, and information was gathered on 405 reactions that appeared during the 21 days after any dose of the COVID-19 vaccines approved at that time in Spain: the Pfizer/BioNTech, Moderna, and University of Oxford/AstraZeneca vaccines,” she added.

Dr. Galván explained that the study shows very clear patterns and investigators reached conclusions that match those of other groups that have investigated this topic. “Six reaction patterns were described according to their frequency. The first is the ‘COVID-19 arm,’ which consists of a local reaction at the injection site and occurs almost exclusively in women and in 70% of cases after inoculation with the Moderna serum. It is a manifestation that resolves well and does not always recur in subsequent doses. More than half are of delayed onset: biopsied patients show signs of a delayed hypersensitivity reaction. In line with all the publications in this regard, it was found that this reaction is not a reason to skip or delay a dose.”
 

Herpes zoster reactivation

The second pattern is urticarial, which, according to the specialist, occurs with equal frequency after the administration of all vaccines and is well controlled with antihistamines. “This is a very nonspecific pattern, which does not prevent it from still being frequent. It was not associated with drug intake.

“The morbilliform pattern is more frequent after the Pfizer/BioNTech and AstraZeneca vaccines. It affects the trunk and extremities, and up to a quarter of the cases required systemic corticosteroids. The papulovesicular and pityriasis rosea–like patterns are equally frequent in all vaccines. The latter is found in a younger age group. Finally, there is the purpuric pattern, more localized in the extremities and more frequent after the Pfizer/BioNTech and AstraZeneca vaccines. On biopsy, this pattern showed small-vessel vasculitis.”

Less frequently, reactivations or de novo onset of different dermatologic diseases were found. “Varicella-zoster virus reactivations were observed with a frequency of 13.8%, being more common after the Pfizer/BioNTech vaccine,” said Dr. Galván. “Other studies have corroborated this increase in herpes zoster, although it has been seen that the absolute number is low, so the benefits of the vaccine outweigh this eventual complication. At the same time and along the same lines, vaccination against herpes zoster is recommended for those over 50 years of age.”

Another fact revealed by the study is that these reactions were not significantly more severe in people with dermatologic diseases, those with previous infection, or those with skin manifestation associated with COVID-19.

Dr. Galván highlighted that, except for the COVID-19 arm, these patterns were among those associated with the disease, “which supports [the idea] that it does not demonstrate that the host’s immune reaction to the infection was playing a role.”
 

Women and young people

“As for pseudoperniosis, it is poorly represented in our series: 0.7% compared to 2% in the American registry. Although neither the SARS-CoV-2–pseudoperniosis association nor its pathophysiology is clear, the idea is that if this manifestation is related to the host’s immune response during infection, pseudoperniosis after vaccination could also be linked to the immune response to the vaccine,” said Dr. Galván.

Many of these reactions are more intense in women. “Before starting to use these vaccines, we already knew that messenger RNA vaccines (a powerful activator of innate immunity) induce frequent reactions, that adjuvants and excipients (polyethylene glycol and polysorbate) also generate them, and that other factors influence reactogenicity, among those of us of the same age and sex, reactions being more frequent in younger people and in women,” said Dr. Galván. “This may be one of the reasons why the COVID-19 arm is so much more prevalent in the female population and that 80% of all reactions that were collected were in women.”

In relation to the fact that manifestations differed, depending on the type of inoculated serum, Dr. Galván said, “Some reactions are just as common after any of the vaccines. However, others are not, as is the case with the COVID-19 arm for the Moderna vaccine or reactivations of the herpes virus, more frequent after the Pfizer/BioNTech vaccine.

“Undoubtedly, behind these differences are particularities in the immune reaction caused by each of the vaccines and their composition, including the excipients,” she said.

Regarding the fact that these reactions were the same throughout the vaccine regimen or that they varied in intensity, depending on the dose, Dr. Galván said, “In our study, as in those carried out by other groups, there were no significant differences in terms of frequency after the first and second doses. One thing to keep in mind is that, due to the temporary design of our study and the time at which it was conducted, it was not possible to collect reactions after second doses of AstraZeneca.

“Manifestations have generally been mild and well controlled. Many of them did not recur after the second dose, and the vast majority did not prevent completion of the vaccination scheme, but we must not lose sight of the fact that 20% of these manifestations were assessed by the dermatologist as serious or very serious,” Dr. Galván added.

Regarding the next steps planned for this line of research, Dr. Galván commented, “We are awaiting the evolution of the reported cases and the reactions that may arise, although for now, our group does not have any open studies. The most important thing now is to be alert and report the data observed in the pharmacovigilance systems, in open registries, and in scientific literature to generate evidence.”

Dr. Galván has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

MADRID – During the International Scientific Symposium “New Frontiers in Scientific Research” that recently took place in Barcelona, specialists analyzed the role of the very-low-calorie ketogenic diet. This analysis was in relation to three comorbidities that have a higher incidence among overweight and obese patients: polycystic ovary syndrome, nonalcoholic fatty liver disease, and type 2 diabetes. The experts’ aim? To analyze and update the latest evidence on the benefits of this dietary choice.

Polycystic ovary syndrome

Alessandra Gambineri, MD, PhD, associate professor at the department of medicine and surgery (DIMEC) at the University of Bologna, Italy, addressed the link between obesity and polycystic ovary syndrome, which she described as a chronic disease that affects about 10% of women of childbearing age and that presents diverse phenotypes with different characteristics.

“The pathophysiology of this syndrome is characterized by the interaction of three factors: androgen excess, adipose tissue dysfunction, and insulin resistance. These factors interact with each other and are expressed differently in each phenotype,” said Dr. Gambineri.

She indicated that adipose tissue dysfunction is central to this pathology. This centrality results from its association with secretions, such as free fatty acids, proinflammatory cytokines, certain adipokines that promote insulin resistance, glucocorticosteroids, androgens, and oxidative stress.

“Similarly, the oxidative stress that characterizes this syndrome is increasingly present in obese individuals,” said Dr. Gambineri. “This oxidative stress also produces ovary hypotoxicity that aggravates ovulatory function. In this context, the very-low-calorie ketogenic diet can be useful in several ways: weight reduction; promoting the loss of mainly visceral/abdominal fat; decreasing lipotoxicity; and improving inflammation, hyperinsulinemia, and insulin resistance.”

This was the path followed to carry out a study that aimed to analyze the effects of the very-low-calorie ketogenic diet on manifestations of polycystic ovary syndrome in the obesity phenotype. Dr. Gambineri presented its results.

“The objective was to compare the effects of a very-low-calorie ketogenic diet and the standard low-calorie (hypocaloric) diet as a control group,” she said. “The effects studied include body weight, insulin resistance, menstrual cycle, ovulation, ovarian morphology, and hyperandrogenism in a population of 30 obese women with polycystic ovary syndrome and insulin resistance.”

Study participants had a diagnosis of polycystic ovary syndrome as defined by the National Institutes of Health criteria and were aged 18-45 years. These women were randomly assigned to two groups of equal size: experimental (very-low-calorie ketogenic diet) and control (hypocaloric diet). “The women assigned to the experimental group followed the ketogenic stage for eight weeks and then moved to the second, low-calorie diet phase for an additional eight weeks, while those in the control group (hypocaloric diet) followed the low-calorie diet for all 16 weeks.”

The primary outcomes were changes in weight and body composition, specifically fat mass and lean mass, measured by bioimpedance. “The changes observed in the following aspects were considered secondary outcomes: abdominal fat distribution, metabolic parameters, ovulation, ovarian morphology, hirsutism, hyperandrogenism, psychological well-being, and psychological distress,” said Dr. Gambineri. “Any reduction in the ovarian stroma, the area where androgens are synthesized, was also analyzed.”

The study authors found that although BMI decreased in both groups, this reduction was greater in the group that followed the very-low-calorie ketogenic diet. Significant weight loss was observed in both groups, 12.4 kg versus 4.7 kg. Significant differences were also observed in waist circumference (−8.1% in the experimental group vs. −2.2% in the control group), fat mass (−15.1% vs. −8.5%), and free testosterone (−30.3% vs. +10.6%). Only the experimental group saw a reduction in insulin.

“A key point regarding hyperandrogenism, especially regarding what’s referred to as free testosterone, there was only a significant reduction in the very-low-calorie ketogenic diet group,” said Dr. Gambineri. “This reduction was especially evident in the first part of the study, coinciding with the ketogenic period. The reason for this effect lies in the significant increase in the concentration of sex hormone-binding globulins, SHB6. Said globulins bind to the testosterone present in female blood, producing a reduction in free testosterone, a very important effect considering that this syndrome is an androgenic disorder. Furthermore, current treatments for polycystic ovary syndrome do not reduce free testosterone as much as this dietary approach does.”

For the specialist, among all these positive effects in these patients, perhaps most important is the notable improvement that occurs in ovulation. “At the beginning of the study, only 38.5% of the participants in the experimental group and 14.3% of those in the control group had ovulatory cycles. After the intervention, 84.6% managed to ovulate, compared to 35.7% who achieved this goal in the other group.”

Dr. Gambineri suggested that this method is “valid for reducing fat mass and rapidly improving hyperandrogenism and ovulatory dysfunction in women with obesity and polycystic ovary syndrome.”
 

Reversing type 2 diabetes?

Daniela Sofrà, MD, an endocrinologist specializing in diabetology at La Source Clinic, Lausanne, Switzerland, reviewed the current evidence on the role of the very-low-calorie ketogenic diet in the management of type 2 diabetes.

“It’s time to rethink diabetes treatment and focus efforts on managing obesity as an associated factor,” she said. “One of the hypotheses being examined in this regard is the twin cycle, which postulates that type 2 diabetes is the result of excess fat in the liver. This in turn is associated with insulin resistance with pancreas dysfunction.”

Dr. Sofrà added that there is a study documenting for the first time the reversibility of the morphology of the diabetic pancreas after caloric restriction with the very-low-calorie ketogenic diet. “The reason for this effect is the use of visceral and intrahepatic fat, which can lead to the remission of the clinical manifestation of type 2 diabetes, understanding as such the definition made by the American Diabetes Association: glycosylated hemoglobin < 6.5% without pharmacological therapy.”

Specifically, the results of this research showed that after following the very-low-calorie ketogenic diet and achieving a 15% weight loss (mean weight loss of the participants), liver glucose levels returned to normal levels within 7 days. Beta cell function returned to near normal within 8 weeks.

“Subsequent studies have shown the durability of remission of type 2 diabetes, thanks to the reactivation of the insulin-secreting function of beta cells that had become dedifferentiated in the face of chronic nutrient excess. Specifically, 6 out of 10 patients maintained glycosylated hemoglobin < 6% after 6 months without the need for pharmacological therapy,” Dr. Sofrà added.

Likewise, she highlighted that the probability of achieving remission is mainly determined by the duration of the disease. “The years with diabetes are one of the main predictors of the response that the patient will have with this dietary intervention. Studies have shown that remission is possible in patients with diabetes for less than 6 years, although there are other projects that indicate that it can be achieved with up to 10 years’ duration.”

Based on these data, Dr. Sofrà emphasized the pleiotropic effects of the very-low-calorie ketogenic diet on glycemic control, favoring the possible remission of diabetes or the reduction of drugs, as well as the reduction of the HOMA-IR index (insulin resistance) and waist circumference in people with type 2 diabetes.
 

Nonalcoholic fatty liver disease

The third comorbidity of obesity that may benefit from the very-low-calorie ketogenic diet is hepatic steatosis, or nonalcoholic fatty liver disease, said Hardy Walle, MD, an internal medicine specialist and director/founder of the Bodymed center, Kirkel, Germany, and one of the authors of this research.

“Recent research shows that ectopic fat and nonalcoholic fatty liver disease could be considered a cause, or at least one of the causes, of most of the diseases that affect the population as a consequence of overweight and obesity,” said Dr. Walle. “Some authors have stated that without fatty liver, there is no type 2 diabetes.”

Dr. Walle pointed out that between 30% and 40% of the adult population has nonalcoholic fatty liver disease, a percentage that increases considerably in people with obesity, reaching 70% prevalence and increasing, in the case of type 2 diabetes, to almost 90%. “Even normal weight does not rule out fatty liver; in fact, about 15% of people with nonalcoholic fatty liver disease are not overweight.”

In a setting where there are no approved drugs for the treatment of fatty liver (the current standard approach focuses on lifestyle interventions), a short-term hypocaloric diet (or liver fasting) is considered an effective method for management of this pathology. This principle was demonstrated by a study by the Saarland University, Saarbrücken, Germany, that Dr. Walle used to illustrate this statement.

“The participants (60 patients with hepatic steatosis) followed a hypocaloric diet (less than 1,000 kcal/day) for 14 days with a formula rich in protein and fiber specially developed for the treatment of nonalcoholic fatty liver disease. A fibroscan was then performed with controlled attenuation parameter measurement to quantify fatty liver disease. The results showed not only a significant improvement in nonalcoholic fatty liver disease parameters but also a marked improvement in all relevant metabolic parameters (serum lipids, liver enzymes),” explained Dr. Walle.

“This evidence leads us to affirm that the concept of hepatic fasting (by means of a hypocaloric diet) marks a point of reference for a future treatment approach for nonalcoholic fatty liver disease,” he concluded.

The study that Dr. Gambineri presented was carried out with the collaboration of the Pronokal Group (Nestlé Health Science). Dr. Gambineri, Dr. Sofrà, and Dr. Walle disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

MADRID – During the International Scientific Symposium “New Frontiers in Scientific Research” that recently took place in Barcelona, specialists analyzed the role of the very-low-calorie ketogenic diet. This analysis was in relation to three comorbidities that have a higher incidence among overweight and obese patients: polycystic ovary syndrome, nonalcoholic fatty liver disease, and type 2 diabetes. The experts’ aim? To analyze and update the latest evidence on the benefits of this dietary choice.

Polycystic ovary syndrome

Alessandra Gambineri, MD, PhD, associate professor at the department of medicine and surgery (DIMEC) at the University of Bologna, Italy, addressed the link between obesity and polycystic ovary syndrome, which she described as a chronic disease that affects about 10% of women of childbearing age and that presents diverse phenotypes with different characteristics.

“The pathophysiology of this syndrome is characterized by the interaction of three factors: androgen excess, adipose tissue dysfunction, and insulin resistance. These factors interact with each other and are expressed differently in each phenotype,” said Dr. Gambineri.

She indicated that adipose tissue dysfunction is central to this pathology. This centrality results from its association with secretions, such as free fatty acids, proinflammatory cytokines, certain adipokines that promote insulin resistance, glucocorticosteroids, androgens, and oxidative stress.

“Similarly, the oxidative stress that characterizes this syndrome is increasingly present in obese individuals,” said Dr. Gambineri. “This oxidative stress also produces ovary hypotoxicity that aggravates ovulatory function. In this context, the very-low-calorie ketogenic diet can be useful in several ways: weight reduction; promoting the loss of mainly visceral/abdominal fat; decreasing lipotoxicity; and improving inflammation, hyperinsulinemia, and insulin resistance.”

This was the path followed to carry out a study that aimed to analyze the effects of the very-low-calorie ketogenic diet on manifestations of polycystic ovary syndrome in the obesity phenotype. Dr. Gambineri presented its results.

“The objective was to compare the effects of a very-low-calorie ketogenic diet and the standard low-calorie (hypocaloric) diet as a control group,” she said. “The effects studied include body weight, insulin resistance, menstrual cycle, ovulation, ovarian morphology, and hyperandrogenism in a population of 30 obese women with polycystic ovary syndrome and insulin resistance.”

Study participants had a diagnosis of polycystic ovary syndrome as defined by the National Institutes of Health criteria and were aged 18-45 years. These women were randomly assigned to two groups of equal size: experimental (very-low-calorie ketogenic diet) and control (hypocaloric diet). “The women assigned to the experimental group followed the ketogenic stage for eight weeks and then moved to the second, low-calorie diet phase for an additional eight weeks, while those in the control group (hypocaloric diet) followed the low-calorie diet for all 16 weeks.”

The primary outcomes were changes in weight and body composition, specifically fat mass and lean mass, measured by bioimpedance. “The changes observed in the following aspects were considered secondary outcomes: abdominal fat distribution, metabolic parameters, ovulation, ovarian morphology, hirsutism, hyperandrogenism, psychological well-being, and psychological distress,” said Dr. Gambineri. “Any reduction in the ovarian stroma, the area where androgens are synthesized, was also analyzed.”

The study authors found that although BMI decreased in both groups, this reduction was greater in the group that followed the very-low-calorie ketogenic diet. Significant weight loss was observed in both groups, 12.4 kg versus 4.7 kg. Significant differences were also observed in waist circumference (−8.1% in the experimental group vs. −2.2% in the control group), fat mass (−15.1% vs. −8.5%), and free testosterone (−30.3% vs. +10.6%). Only the experimental group saw a reduction in insulin.

“A key point regarding hyperandrogenism, especially regarding what’s referred to as free testosterone, there was only a significant reduction in the very-low-calorie ketogenic diet group,” said Dr. Gambineri. “This reduction was especially evident in the first part of the study, coinciding with the ketogenic period. The reason for this effect lies in the significant increase in the concentration of sex hormone-binding globulins, SHB6. Said globulins bind to the testosterone present in female blood, producing a reduction in free testosterone, a very important effect considering that this syndrome is an androgenic disorder. Furthermore, current treatments for polycystic ovary syndrome do not reduce free testosterone as much as this dietary approach does.”

For the specialist, among all these positive effects in these patients, perhaps most important is the notable improvement that occurs in ovulation. “At the beginning of the study, only 38.5% of the participants in the experimental group and 14.3% of those in the control group had ovulatory cycles. After the intervention, 84.6% managed to ovulate, compared to 35.7% who achieved this goal in the other group.”

Dr. Gambineri suggested that this method is “valid for reducing fat mass and rapidly improving hyperandrogenism and ovulatory dysfunction in women with obesity and polycystic ovary syndrome.”
 

Reversing type 2 diabetes?

Daniela Sofrà, MD, an endocrinologist specializing in diabetology at La Source Clinic, Lausanne, Switzerland, reviewed the current evidence on the role of the very-low-calorie ketogenic diet in the management of type 2 diabetes.

“It’s time to rethink diabetes treatment and focus efforts on managing obesity as an associated factor,” she said. “One of the hypotheses being examined in this regard is the twin cycle, which postulates that type 2 diabetes is the result of excess fat in the liver. This in turn is associated with insulin resistance with pancreas dysfunction.”

Dr. Sofrà added that there is a study documenting for the first time the reversibility of the morphology of the diabetic pancreas after caloric restriction with the very-low-calorie ketogenic diet. “The reason for this effect is the use of visceral and intrahepatic fat, which can lead to the remission of the clinical manifestation of type 2 diabetes, understanding as such the definition made by the American Diabetes Association: glycosylated hemoglobin < 6.5% without pharmacological therapy.”

Specifically, the results of this research showed that after following the very-low-calorie ketogenic diet and achieving a 15% weight loss (mean weight loss of the participants), liver glucose levels returned to normal levels within 7 days. Beta cell function returned to near normal within 8 weeks.

“Subsequent studies have shown the durability of remission of type 2 diabetes, thanks to the reactivation of the insulin-secreting function of beta cells that had become dedifferentiated in the face of chronic nutrient excess. Specifically, 6 out of 10 patients maintained glycosylated hemoglobin < 6% after 6 months without the need for pharmacological therapy,” Dr. Sofrà added.

Likewise, she highlighted that the probability of achieving remission is mainly determined by the duration of the disease. “The years with diabetes are one of the main predictors of the response that the patient will have with this dietary intervention. Studies have shown that remission is possible in patients with diabetes for less than 6 years, although there are other projects that indicate that it can be achieved with up to 10 years’ duration.”

Based on these data, Dr. Sofrà emphasized the pleiotropic effects of the very-low-calorie ketogenic diet on glycemic control, favoring the possible remission of diabetes or the reduction of drugs, as well as the reduction of the HOMA-IR index (insulin resistance) and waist circumference in people with type 2 diabetes.
 

Nonalcoholic fatty liver disease

The third comorbidity of obesity that may benefit from the very-low-calorie ketogenic diet is hepatic steatosis, or nonalcoholic fatty liver disease, said Hardy Walle, MD, an internal medicine specialist and director/founder of the Bodymed center, Kirkel, Germany, and one of the authors of this research.

“Recent research shows that ectopic fat and nonalcoholic fatty liver disease could be considered a cause, or at least one of the causes, of most of the diseases that affect the population as a consequence of overweight and obesity,” said Dr. Walle. “Some authors have stated that without fatty liver, there is no type 2 diabetes.”

Dr. Walle pointed out that between 30% and 40% of the adult population has nonalcoholic fatty liver disease, a percentage that increases considerably in people with obesity, reaching 70% prevalence and increasing, in the case of type 2 diabetes, to almost 90%. “Even normal weight does not rule out fatty liver; in fact, about 15% of people with nonalcoholic fatty liver disease are not overweight.”

In a setting where there are no approved drugs for the treatment of fatty liver (the current standard approach focuses on lifestyle interventions), a short-term hypocaloric diet (or liver fasting) is considered an effective method for management of this pathology. This principle was demonstrated by a study by the Saarland University, Saarbrücken, Germany, that Dr. Walle used to illustrate this statement.

“The participants (60 patients with hepatic steatosis) followed a hypocaloric diet (less than 1,000 kcal/day) for 14 days with a formula rich in protein and fiber specially developed for the treatment of nonalcoholic fatty liver disease. A fibroscan was then performed with controlled attenuation parameter measurement to quantify fatty liver disease. The results showed not only a significant improvement in nonalcoholic fatty liver disease parameters but also a marked improvement in all relevant metabolic parameters (serum lipids, liver enzymes),” explained Dr. Walle.

“This evidence leads us to affirm that the concept of hepatic fasting (by means of a hypocaloric diet) marks a point of reference for a future treatment approach for nonalcoholic fatty liver disease,” he concluded.

The study that Dr. Gambineri presented was carried out with the collaboration of the Pronokal Group (Nestlé Health Science). Dr. Gambineri, Dr. Sofrà, and Dr. Walle disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

MADRID – During the International Scientific Symposium “New Frontiers in Scientific Research” that recently took place in Barcelona, specialists analyzed the role of the very-low-calorie ketogenic diet. This analysis was in relation to three comorbidities that have a higher incidence among overweight and obese patients: polycystic ovary syndrome, nonalcoholic fatty liver disease, and type 2 diabetes. The experts’ aim? To analyze and update the latest evidence on the benefits of this dietary choice.

Polycystic ovary syndrome

Alessandra Gambineri, MD, PhD, associate professor at the department of medicine and surgery (DIMEC) at the University of Bologna, Italy, addressed the link between obesity and polycystic ovary syndrome, which she described as a chronic disease that affects about 10% of women of childbearing age and that presents diverse phenotypes with different characteristics.

“The pathophysiology of this syndrome is characterized by the interaction of three factors: androgen excess, adipose tissue dysfunction, and insulin resistance. These factors interact with each other and are expressed differently in each phenotype,” said Dr. Gambineri.

She indicated that adipose tissue dysfunction is central to this pathology. This centrality results from its association with secretions, such as free fatty acids, proinflammatory cytokines, certain adipokines that promote insulin resistance, glucocorticosteroids, androgens, and oxidative stress.

“Similarly, the oxidative stress that characterizes this syndrome is increasingly present in obese individuals,” said Dr. Gambineri. “This oxidative stress also produces ovary hypotoxicity that aggravates ovulatory function. In this context, the very-low-calorie ketogenic diet can be useful in several ways: weight reduction; promoting the loss of mainly visceral/abdominal fat; decreasing lipotoxicity; and improving inflammation, hyperinsulinemia, and insulin resistance.”

This was the path followed to carry out a study that aimed to analyze the effects of the very-low-calorie ketogenic diet on manifestations of polycystic ovary syndrome in the obesity phenotype. Dr. Gambineri presented its results.

“The objective was to compare the effects of a very-low-calorie ketogenic diet and the standard low-calorie (hypocaloric) diet as a control group,” she said. “The effects studied include body weight, insulin resistance, menstrual cycle, ovulation, ovarian morphology, and hyperandrogenism in a population of 30 obese women with polycystic ovary syndrome and insulin resistance.”

Study participants had a diagnosis of polycystic ovary syndrome as defined by the National Institutes of Health criteria and were aged 18-45 years. These women were randomly assigned to two groups of equal size: experimental (very-low-calorie ketogenic diet) and control (hypocaloric diet). “The women assigned to the experimental group followed the ketogenic stage for eight weeks and then moved to the second, low-calorie diet phase for an additional eight weeks, while those in the control group (hypocaloric diet) followed the low-calorie diet for all 16 weeks.”

The primary outcomes were changes in weight and body composition, specifically fat mass and lean mass, measured by bioimpedance. “The changes observed in the following aspects were considered secondary outcomes: abdominal fat distribution, metabolic parameters, ovulation, ovarian morphology, hirsutism, hyperandrogenism, psychological well-being, and psychological distress,” said Dr. Gambineri. “Any reduction in the ovarian stroma, the area where androgens are synthesized, was also analyzed.”

The study authors found that although BMI decreased in both groups, this reduction was greater in the group that followed the very-low-calorie ketogenic diet. Significant weight loss was observed in both groups, 12.4 kg versus 4.7 kg. Significant differences were also observed in waist circumference (−8.1% in the experimental group vs. −2.2% in the control group), fat mass (−15.1% vs. −8.5%), and free testosterone (−30.3% vs. +10.6%). Only the experimental group saw a reduction in insulin.

“A key point regarding hyperandrogenism, especially regarding what’s referred to as free testosterone, there was only a significant reduction in the very-low-calorie ketogenic diet group,” said Dr. Gambineri. “This reduction was especially evident in the first part of the study, coinciding with the ketogenic period. The reason for this effect lies in the significant increase in the concentration of sex hormone-binding globulins, SHB6. Said globulins bind to the testosterone present in female blood, producing a reduction in free testosterone, a very important effect considering that this syndrome is an androgenic disorder. Furthermore, current treatments for polycystic ovary syndrome do not reduce free testosterone as much as this dietary approach does.”

For the specialist, among all these positive effects in these patients, perhaps most important is the notable improvement that occurs in ovulation. “At the beginning of the study, only 38.5% of the participants in the experimental group and 14.3% of those in the control group had ovulatory cycles. After the intervention, 84.6% managed to ovulate, compared to 35.7% who achieved this goal in the other group.”

Dr. Gambineri suggested that this method is “valid for reducing fat mass and rapidly improving hyperandrogenism and ovulatory dysfunction in women with obesity and polycystic ovary syndrome.”
 

Reversing type 2 diabetes?

Daniela Sofrà, MD, an endocrinologist specializing in diabetology at La Source Clinic, Lausanne, Switzerland, reviewed the current evidence on the role of the very-low-calorie ketogenic diet in the management of type 2 diabetes.

“It’s time to rethink diabetes treatment and focus efforts on managing obesity as an associated factor,” she said. “One of the hypotheses being examined in this regard is the twin cycle, which postulates that type 2 diabetes is the result of excess fat in the liver. This in turn is associated with insulin resistance with pancreas dysfunction.”

Dr. Sofrà added that there is a study documenting for the first time the reversibility of the morphology of the diabetic pancreas after caloric restriction with the very-low-calorie ketogenic diet. “The reason for this effect is the use of visceral and intrahepatic fat, which can lead to the remission of the clinical manifestation of type 2 diabetes, understanding as such the definition made by the American Diabetes Association: glycosylated hemoglobin < 6.5% without pharmacological therapy.”

Specifically, the results of this research showed that after following the very-low-calorie ketogenic diet and achieving a 15% weight loss (mean weight loss of the participants), liver glucose levels returned to normal levels within 7 days. Beta cell function returned to near normal within 8 weeks.

“Subsequent studies have shown the durability of remission of type 2 diabetes, thanks to the reactivation of the insulin-secreting function of beta cells that had become dedifferentiated in the face of chronic nutrient excess. Specifically, 6 out of 10 patients maintained glycosylated hemoglobin < 6% after 6 months without the need for pharmacological therapy,” Dr. Sofrà added.

Likewise, she highlighted that the probability of achieving remission is mainly determined by the duration of the disease. “The years with diabetes are one of the main predictors of the response that the patient will have with this dietary intervention. Studies have shown that remission is possible in patients with diabetes for less than 6 years, although there are other projects that indicate that it can be achieved with up to 10 years’ duration.”

Based on these data, Dr. Sofrà emphasized the pleiotropic effects of the very-low-calorie ketogenic diet on glycemic control, favoring the possible remission of diabetes or the reduction of drugs, as well as the reduction of the HOMA-IR index (insulin resistance) and waist circumference in people with type 2 diabetes.
 

Nonalcoholic fatty liver disease

The third comorbidity of obesity that may benefit from the very-low-calorie ketogenic diet is hepatic steatosis, or nonalcoholic fatty liver disease, said Hardy Walle, MD, an internal medicine specialist and director/founder of the Bodymed center, Kirkel, Germany, and one of the authors of this research.

“Recent research shows that ectopic fat and nonalcoholic fatty liver disease could be considered a cause, or at least one of the causes, of most of the diseases that affect the population as a consequence of overweight and obesity,” said Dr. Walle. “Some authors have stated that without fatty liver, there is no type 2 diabetes.”

Dr. Walle pointed out that between 30% and 40% of the adult population has nonalcoholic fatty liver disease, a percentage that increases considerably in people with obesity, reaching 70% prevalence and increasing, in the case of type 2 diabetes, to almost 90%. “Even normal weight does not rule out fatty liver; in fact, about 15% of people with nonalcoholic fatty liver disease are not overweight.”

In a setting where there are no approved drugs for the treatment of fatty liver (the current standard approach focuses on lifestyle interventions), a short-term hypocaloric diet (or liver fasting) is considered an effective method for management of this pathology. This principle was demonstrated by a study by the Saarland University, Saarbrücken, Germany, that Dr. Walle used to illustrate this statement.

“The participants (60 patients with hepatic steatosis) followed a hypocaloric diet (less than 1,000 kcal/day) for 14 days with a formula rich in protein and fiber specially developed for the treatment of nonalcoholic fatty liver disease. A fibroscan was then performed with controlled attenuation parameter measurement to quantify fatty liver disease. The results showed not only a significant improvement in nonalcoholic fatty liver disease parameters but also a marked improvement in all relevant metabolic parameters (serum lipids, liver enzymes),” explained Dr. Walle.

“This evidence leads us to affirm that the concept of hepatic fasting (by means of a hypocaloric diet) marks a point of reference for a future treatment approach for nonalcoholic fatty liver disease,” he concluded.

The study that Dr. Gambineri presented was carried out with the collaboration of the Pronokal Group (Nestlé Health Science). Dr. Gambineri, Dr. Sofrà, and Dr. Walle disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

MADRID – There is increasing evidence of the impact that SARS-CoV-2 infection has on patients with diabetes. It involves the relationship between COVID-19 and new diagnoses of diabetes and blood glucose disorders, among others, in the post–COVID-19 period. These topics were addressed at the XXXIII National Congress of the Spanish Diabetes Society. They were also the central theme of the inaugural conference, Pancreatic Involvement During COVID-19: From Preclinical Studies to Clinical Relevance, which was led by Alexander Kleger, MD, PhD, head of the department of pancreatology at the Ulm (Germany) University Clinic for Internal Medicine.

The chair of the scientific committee of the congress, Franz Martín, MD, launched the conference by noting that the work of Dr. Kleger and his team has made it possible to ascertain that SARS-CoV-2 can infect pancreatic beta cells that produce insulin. This observation may help in understanding why patients with COVID-19 sometimes experience symptoms related to greater difficulty regulating blood glucose.

“In addition, the German expert and his group have described the abnormalities that occur in beta cells when they are infected by SARS-CoV-2, something especially important, given that knowledge of these abnormalities may be of great importance to understanding the possible appearance of more cases of diabetes in the future,” Dr. Martín added.

“Our data identify the human pancreas as a target of SARS-CoV-2 infection and suggest that pancreatic beta cell involvement could contribute to the metabolic dysregulation seen in COVID-19 patients,” Dr. Kleger pointed out.

In his speech, Dr. Kleger reviewed the evidence on the effects of SARS-CoV-2 that has been garnered since the start of the pandemic, and he presented his research group’s findings on the impact at the pancreatic level.

“Since March 2020, it has been seen that COVID-19 affected the pancreas, and studies published in August of that same year clearly spoke of both a worsening of diabetes and an increase in new cases of this disease diagnosed after SARS-CoV-2 infection. Also, the data showed how hospitalized patients with no previous history of diabetes experienced rapid increases in glucose levels 5 days after admission,” Dr. Kleger said.
 

Angiotensin-converting enzyme 2

As an example of the pace at which evidence on the pancreatic impact of this virus has been evolving, Dr. Kleger referred to early studies that found no angiotensin-converting enzyme 2 receptor on cells of the endocrine and exocrine pancreas. “To our surprise, in our work, we did observe the obvious presence of angiotensin-converting enzyme 2 specifically expressed in human pancreatic beta cells, something confirmed by other investigations. Another surprising aspect was verifying that the viral infection lasts longer in the pancreas than in the lungs,” said the expert.

These findings caused the researchers to realize that SARS-CoV-2 may be directly or indirectly associated with diabetes. “It is currently the subject of debate whether it may be a direct effect, infecting or directly reaching the pancreatic beta cells, or whether this involvement is a result of the effect of the infection at systemic level, in the context of the cytokine storm and the proinflammatory environment derived from it. Our current challenge is to confirm whether this virus can really replicate in pancreatic beta cells and to assess the possible existence of reinfections, among other aspects,” said Dr. Kleger.

Along with these “developing areas of knowledge,” there are several certainties regarding the link between diabetes and COVID-19. Dr. Kleger summarized the most relevant one. “Preexisting diabetes is known to be a highly prevalent comorbidity seen in 11%-22% of patients and increases the risk of severe disease and mortality.

“SARS-CoV-2 infection has also been shown to affect the exocrine pancreas, manifesting as pancreatitis in 5% of critically ill patients with COVID-19, as well as enlargement of the pancreas and abnormal levels of amylase or lipase in 7.5%-17% of patients.

“Furthermore, it is obvious that SARS-CoV-2 infection produces glycometabolic dysfunction in these patients, with increased hyperglycemia in people with type 2 diabetes and ketoacidosis in 2%-6.4% of patients with and without diabetes.”
 

After recovery

The most recent research reveals the persistence of this dysregulation long after recovery from COVID-19. “We’ve seen that in a significant proportion of patients, hyperglycemia is maintained for some time; in the specific case of hospitalized patients [without the need for assisted ventilation or other intensive care requirements], for up to more than 2 months after overcoming the illness.

“In the same way, there are studies that have shown that insulin resistance and hyperstimulation of pancreatic beta cells remain at pathological levels in the post–COVID-19 phase. And in line with increased insulin resistance, signs of hyperinflammation have also been detected in these patients.”

Dr. Kleger noted that another research area is the increased incidence of newly diagnosed diabetes after recovery from SARS-CoV-2 infection, “something that seems to be correlated with how severely the disease has been experienced and also depending on whether hospitalization or intensive care was needed. Likewise, retrospective studies have shown that the risk of developing type 2 diabetes is higher in COVID-19 patients, compared with those with other respiratory infections. Regarding the incidence of type 1 diabetes, there is evidence, particularly in the case of children, of a clear correlation between the pandemic waves and the increase in cases.

“Therefore, and in view of this data, we could say that, with regard to the involvement of SARS-CoV-2 in pancreatic beta cells, something is up, but we are not yet able to fully understand what it is. What can be confirmed based on the numerous studies carried out in this regard is that COVID-19 produces a metabolic dysregulation [hyperglycemia, insulin resistance, diabetic ketoacidosis] which in turn favors the development of diabetes in patients with no history of this disease,” said Dr. Kleger.

“Likewise, everything points to the existence of a definitively feasible infection in pancreatic beta cells associated with SARS-CoV-2, but there are still unknown aspects of the physiology that explain this effect that remain the subject of debate and deserve future studies,” he concluded.
 

Consequences of the pandemic

The experts agreed that, although COVID-19 is no longer at the center of specialist care, it is still a subject of investigation. On the conference’s opening day, an update was made on the approach to diabetes.

Care activity is gradually recovering as the time that professionals devote to COVID-19 care is reduced, “but it will take time to catch up with the care activities not carried out during the pandemic, and, unfortunately, in the coming years, we will see the repercussion of the lack or reduction of care during these years,” stressed the SED chair, Antonio Pérez Pérez, MD, director of endocrinology and nutrition of Hospital de la Santa Creu i Sant Pau, Barcelona.

Dr. Pérez stressed that the pandemic has revealed health system deficiencies in diabetes care. He added that the impact of COVID-19 on diabetes (resulting from the effects of the infection itself or from the inadequacy of prevention, diagnosis, and treatment measures) fostered a deterioration of metabolic control and a delay in the diagnosis of the disease and its complications.

“All this contributes to the fact that we currently continue to see patients with complications, especially in the case of type 2 diabetes, with more serious decompensations and diagnoses in more advanced stages of the disease. This impact has been more significant in older people from disadvantaged areas and with less capacity for self-monitoring and self-adjustment of treatment,” he added.

Describing lessons learned through the experiences accumulated in diabetes care during the pandemic, Dr. Pérez highlighted the push for virtual consultations, accessibility to drugs prescribed in electronic prescriptions, and the use of educational resources online and of telemedicine tools. “The need to invest in the health sector has also been assumed, endowing it with robustness in well-trained health personnel, to promote health education, boost efficient health organization, and invest in innovation aimed at facilitating care.”

Dr. Kleger and Dr. Pérez disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com. This article was translated from the Medscape Spanish edition.

MADRID – There is increasing evidence of the impact that SARS-CoV-2 infection has on patients with diabetes. It involves the relationship between COVID-19 and new diagnoses of diabetes and blood glucose disorders, among others, in the post–COVID-19 period. These topics were addressed at the XXXIII National Congress of the Spanish Diabetes Society. They were also the central theme of the inaugural conference, Pancreatic Involvement During COVID-19: From Preclinical Studies to Clinical Relevance, which was led by Alexander Kleger, MD, PhD, head of the department of pancreatology at the Ulm (Germany) University Clinic for Internal Medicine.

The chair of the scientific committee of the congress, Franz Martín, MD, launched the conference by noting that the work of Dr. Kleger and his team has made it possible to ascertain that SARS-CoV-2 can infect pancreatic beta cells that produce insulin. This observation may help in understanding why patients with COVID-19 sometimes experience symptoms related to greater difficulty regulating blood glucose.

“In addition, the German expert and his group have described the abnormalities that occur in beta cells when they are infected by SARS-CoV-2, something especially important, given that knowledge of these abnormalities may be of great importance to understanding the possible appearance of more cases of diabetes in the future,” Dr. Martín added.

“Our data identify the human pancreas as a target of SARS-CoV-2 infection and suggest that pancreatic beta cell involvement could contribute to the metabolic dysregulation seen in COVID-19 patients,” Dr. Kleger pointed out.

In his speech, Dr. Kleger reviewed the evidence on the effects of SARS-CoV-2 that has been garnered since the start of the pandemic, and he presented his research group’s findings on the impact at the pancreatic level.

“Since March 2020, it has been seen that COVID-19 affected the pancreas, and studies published in August of that same year clearly spoke of both a worsening of diabetes and an increase in new cases of this disease diagnosed after SARS-CoV-2 infection. Also, the data showed how hospitalized patients with no previous history of diabetes experienced rapid increases in glucose levels 5 days after admission,” Dr. Kleger said.
 

Angiotensin-converting enzyme 2

As an example of the pace at which evidence on the pancreatic impact of this virus has been evolving, Dr. Kleger referred to early studies that found no angiotensin-converting enzyme 2 receptor on cells of the endocrine and exocrine pancreas. “To our surprise, in our work, we did observe the obvious presence of angiotensin-converting enzyme 2 specifically expressed in human pancreatic beta cells, something confirmed by other investigations. Another surprising aspect was verifying that the viral infection lasts longer in the pancreas than in the lungs,” said the expert.

These findings caused the researchers to realize that SARS-CoV-2 may be directly or indirectly associated with diabetes. “It is currently the subject of debate whether it may be a direct effect, infecting or directly reaching the pancreatic beta cells, or whether this involvement is a result of the effect of the infection at systemic level, in the context of the cytokine storm and the proinflammatory environment derived from it. Our current challenge is to confirm whether this virus can really replicate in pancreatic beta cells and to assess the possible existence of reinfections, among other aspects,” said Dr. Kleger.

Along with these “developing areas of knowledge,” there are several certainties regarding the link between diabetes and COVID-19. Dr. Kleger summarized the most relevant one. “Preexisting diabetes is known to be a highly prevalent comorbidity seen in 11%-22% of patients and increases the risk of severe disease and mortality.

“SARS-CoV-2 infection has also been shown to affect the exocrine pancreas, manifesting as pancreatitis in 5% of critically ill patients with COVID-19, as well as enlargement of the pancreas and abnormal levels of amylase or lipase in 7.5%-17% of patients.

“Furthermore, it is obvious that SARS-CoV-2 infection produces glycometabolic dysfunction in these patients, with increased hyperglycemia in people with type 2 diabetes and ketoacidosis in 2%-6.4% of patients with and without diabetes.”
 

After recovery

The most recent research reveals the persistence of this dysregulation long after recovery from COVID-19. “We’ve seen that in a significant proportion of patients, hyperglycemia is maintained for some time; in the specific case of hospitalized patients [without the need for assisted ventilation or other intensive care requirements], for up to more than 2 months after overcoming the illness.

“In the same way, there are studies that have shown that insulin resistance and hyperstimulation of pancreatic beta cells remain at pathological levels in the post–COVID-19 phase. And in line with increased insulin resistance, signs of hyperinflammation have also been detected in these patients.”

Dr. Kleger noted that another research area is the increased incidence of newly diagnosed diabetes after recovery from SARS-CoV-2 infection, “something that seems to be correlated with how severely the disease has been experienced and also depending on whether hospitalization or intensive care was needed. Likewise, retrospective studies have shown that the risk of developing type 2 diabetes is higher in COVID-19 patients, compared with those with other respiratory infections. Regarding the incidence of type 1 diabetes, there is evidence, particularly in the case of children, of a clear correlation between the pandemic waves and the increase in cases.

“Therefore, and in view of this data, we could say that, with regard to the involvement of SARS-CoV-2 in pancreatic beta cells, something is up, but we are not yet able to fully understand what it is. What can be confirmed based on the numerous studies carried out in this regard is that COVID-19 produces a metabolic dysregulation [hyperglycemia, insulin resistance, diabetic ketoacidosis] which in turn favors the development of diabetes in patients with no history of this disease,” said Dr. Kleger.

“Likewise, everything points to the existence of a definitively feasible infection in pancreatic beta cells associated with SARS-CoV-2, but there are still unknown aspects of the physiology that explain this effect that remain the subject of debate and deserve future studies,” he concluded.
 

Consequences of the pandemic

The experts agreed that, although COVID-19 is no longer at the center of specialist care, it is still a subject of investigation. On the conference’s opening day, an update was made on the approach to diabetes.

Care activity is gradually recovering as the time that professionals devote to COVID-19 care is reduced, “but it will take time to catch up with the care activities not carried out during the pandemic, and, unfortunately, in the coming years, we will see the repercussion of the lack or reduction of care during these years,” stressed the SED chair, Antonio Pérez Pérez, MD, director of endocrinology and nutrition of Hospital de la Santa Creu i Sant Pau, Barcelona.

Dr. Pérez stressed that the pandemic has revealed health system deficiencies in diabetes care. He added that the impact of COVID-19 on diabetes (resulting from the effects of the infection itself or from the inadequacy of prevention, diagnosis, and treatment measures) fostered a deterioration of metabolic control and a delay in the diagnosis of the disease and its complications.

“All this contributes to the fact that we currently continue to see patients with complications, especially in the case of type 2 diabetes, with more serious decompensations and diagnoses in more advanced stages of the disease. This impact has been more significant in older people from disadvantaged areas and with less capacity for self-monitoring and self-adjustment of treatment,” he added.

Describing lessons learned through the experiences accumulated in diabetes care during the pandemic, Dr. Pérez highlighted the push for virtual consultations, accessibility to drugs prescribed in electronic prescriptions, and the use of educational resources online and of telemedicine tools. “The need to invest in the health sector has also been assumed, endowing it with robustness in well-trained health personnel, to promote health education, boost efficient health organization, and invest in innovation aimed at facilitating care.”

Dr. Kleger and Dr. Pérez disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com. This article was translated from the Medscape Spanish edition.

MADRID – There is increasing evidence of the impact that SARS-CoV-2 infection has on patients with diabetes. It involves the relationship between COVID-19 and new diagnoses of diabetes and blood glucose disorders, among others, in the post–COVID-19 period. These topics were addressed at the XXXIII National Congress of the Spanish Diabetes Society. They were also the central theme of the inaugural conference, Pancreatic Involvement During COVID-19: From Preclinical Studies to Clinical Relevance, which was led by Alexander Kleger, MD, PhD, head of the department of pancreatology at the Ulm (Germany) University Clinic for Internal Medicine.

The chair of the scientific committee of the congress, Franz Martín, MD, launched the conference by noting that the work of Dr. Kleger and his team has made it possible to ascertain that SARS-CoV-2 can infect pancreatic beta cells that produce insulin. This observation may help in understanding why patients with COVID-19 sometimes experience symptoms related to greater difficulty regulating blood glucose.

“In addition, the German expert and his group have described the abnormalities that occur in beta cells when they are infected by SARS-CoV-2, something especially important, given that knowledge of these abnormalities may be of great importance to understanding the possible appearance of more cases of diabetes in the future,” Dr. Martín added.

“Our data identify the human pancreas as a target of SARS-CoV-2 infection and suggest that pancreatic beta cell involvement could contribute to the metabolic dysregulation seen in COVID-19 patients,” Dr. Kleger pointed out.

In his speech, Dr. Kleger reviewed the evidence on the effects of SARS-CoV-2 that has been garnered since the start of the pandemic, and he presented his research group’s findings on the impact at the pancreatic level.

“Since March 2020, it has been seen that COVID-19 affected the pancreas, and studies published in August of that same year clearly spoke of both a worsening of diabetes and an increase in new cases of this disease diagnosed after SARS-CoV-2 infection. Also, the data showed how hospitalized patients with no previous history of diabetes experienced rapid increases in glucose levels 5 days after admission,” Dr. Kleger said.
 

Angiotensin-converting enzyme 2

As an example of the pace at which evidence on the pancreatic impact of this virus has been evolving, Dr. Kleger referred to early studies that found no angiotensin-converting enzyme 2 receptor on cells of the endocrine and exocrine pancreas. “To our surprise, in our work, we did observe the obvious presence of angiotensin-converting enzyme 2 specifically expressed in human pancreatic beta cells, something confirmed by other investigations. Another surprising aspect was verifying that the viral infection lasts longer in the pancreas than in the lungs,” said the expert.

These findings caused the researchers to realize that SARS-CoV-2 may be directly or indirectly associated with diabetes. “It is currently the subject of debate whether it may be a direct effect, infecting or directly reaching the pancreatic beta cells, or whether this involvement is a result of the effect of the infection at systemic level, in the context of the cytokine storm and the proinflammatory environment derived from it. Our current challenge is to confirm whether this virus can really replicate in pancreatic beta cells and to assess the possible existence of reinfections, among other aspects,” said Dr. Kleger.

Along with these “developing areas of knowledge,” there are several certainties regarding the link between diabetes and COVID-19. Dr. Kleger summarized the most relevant one. “Preexisting diabetes is known to be a highly prevalent comorbidity seen in 11%-22% of patients and increases the risk of severe disease and mortality.

“SARS-CoV-2 infection has also been shown to affect the exocrine pancreas, manifesting as pancreatitis in 5% of critically ill patients with COVID-19, as well as enlargement of the pancreas and abnormal levels of amylase or lipase in 7.5%-17% of patients.

“Furthermore, it is obvious that SARS-CoV-2 infection produces glycometabolic dysfunction in these patients, with increased hyperglycemia in people with type 2 diabetes and ketoacidosis in 2%-6.4% of patients with and without diabetes.”
 

After recovery

The most recent research reveals the persistence of this dysregulation long after recovery from COVID-19. “We’ve seen that in a significant proportion of patients, hyperglycemia is maintained for some time; in the specific case of hospitalized patients [without the need for assisted ventilation or other intensive care requirements], for up to more than 2 months after overcoming the illness.

“In the same way, there are studies that have shown that insulin resistance and hyperstimulation of pancreatic beta cells remain at pathological levels in the post–COVID-19 phase. And in line with increased insulin resistance, signs of hyperinflammation have also been detected in these patients.”

Dr. Kleger noted that another research area is the increased incidence of newly diagnosed diabetes after recovery from SARS-CoV-2 infection, “something that seems to be correlated with how severely the disease has been experienced and also depending on whether hospitalization or intensive care was needed. Likewise, retrospective studies have shown that the risk of developing type 2 diabetes is higher in COVID-19 patients, compared with those with other respiratory infections. Regarding the incidence of type 1 diabetes, there is evidence, particularly in the case of children, of a clear correlation between the pandemic waves and the increase in cases.

“Therefore, and in view of this data, we could say that, with regard to the involvement of SARS-CoV-2 in pancreatic beta cells, something is up, but we are not yet able to fully understand what it is. What can be confirmed based on the numerous studies carried out in this regard is that COVID-19 produces a metabolic dysregulation [hyperglycemia, insulin resistance, diabetic ketoacidosis] which in turn favors the development of diabetes in patients with no history of this disease,” said Dr. Kleger.

“Likewise, everything points to the existence of a definitively feasible infection in pancreatic beta cells associated with SARS-CoV-2, but there are still unknown aspects of the physiology that explain this effect that remain the subject of debate and deserve future studies,” he concluded.
 

Consequences of the pandemic

The experts agreed that, although COVID-19 is no longer at the center of specialist care, it is still a subject of investigation. On the conference’s opening day, an update was made on the approach to diabetes.

Care activity is gradually recovering as the time that professionals devote to COVID-19 care is reduced, “but it will take time to catch up with the care activities not carried out during the pandemic, and, unfortunately, in the coming years, we will see the repercussion of the lack or reduction of care during these years,” stressed the SED chair, Antonio Pérez Pérez, MD, director of endocrinology and nutrition of Hospital de la Santa Creu i Sant Pau, Barcelona.

Dr. Pérez stressed that the pandemic has revealed health system deficiencies in diabetes care. He added that the impact of COVID-19 on diabetes (resulting from the effects of the infection itself or from the inadequacy of prevention, diagnosis, and treatment measures) fostered a deterioration of metabolic control and a delay in the diagnosis of the disease and its complications.

“All this contributes to the fact that we currently continue to see patients with complications, especially in the case of type 2 diabetes, with more serious decompensations and diagnoses in more advanced stages of the disease. This impact has been more significant in older people from disadvantaged areas and with less capacity for self-monitoring and self-adjustment of treatment,” he added.

Describing lessons learned through the experiences accumulated in diabetes care during the pandemic, Dr. Pérez highlighted the push for virtual consultations, accessibility to drugs prescribed in electronic prescriptions, and the use of educational resources online and of telemedicine tools. “The need to invest in the health sector has also been assumed, endowing it with robustness in well-trained health personnel, to promote health education, boost efficient health organization, and invest in innovation aimed at facilitating care.”

Dr. Kleger and Dr. Pérez disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com. This article was translated from the Medscape Spanish edition.

MADRID, Spain – Individuals with substance use disorders are at higher risk of being infected by and dying from COVID-19 – even if they are fully vaccinated – compared with the general population. Such are the findings of a line of research led by Mexican psychiatrist Nora Volkow, MD, director of the U.S. National Institute on Drug Abuse (NIDA).

A pioneer in the use of brain imaging to investigate how substance use affects brain functions and one of Time magazine’s “Top 100 People Who Shape Our World,” she led the Inaugural Conference at the XXXI Congress of the Spanish Society of Clinical Pharmacology “Drugs and Actions During the Pandemic.” Dr. Volkow spoke about the effects that the current health crisis has had on drug use and the social challenges that arose from lockdowns. She also presented and discussed the results of studies being conducted at NIDA that “are aimed at reviewing what we’ve learned and what the consequences of COVID-19 have been with respect to substance abuse disorder.”

As Dr. Volkow pointed out, drugs affect much more than just the brain. “In particular, the heart, the lungs, the immune system – all of these are significantly harmed by substances like tobacco, alcohol, cocaine, and methamphetamine. This is why, since the beginning of the pandemic, we’ve been worried about seeing what consequences SARS-CoV-2 was going to have on users of these substances, especially in light of the great toll this disease takes on the respiratory system and the vascular system.”
 

Pulmonary ‘predisposition’ and race

Dr. Volkow and her team launched several studies to get a more thorough understanding of the link between substance abuse disorders and poor COVID-19 prognoses. One of them was based on analyses from electronic health records in the United States. The purpose was to determine COVID-19 risk and outcomes in patients based on the type of use disorder (for example, alcohol, opioid, cannabis, cocaine).

“The results showed that regardless of the drug type, all users of these substances had both a higher risk of being infected by COVID-19 and a higher death rate in comparison with the rest of the population,” said Dr. Volkow. “This surprised us, because there’s no evidence that drugs themselves make the virus more infectious. However, what the results did clearly indicate to us was that using these substances was associated with behavior that put these individuals at a greater risk for infection,” Dr. Volkow explained.

“In addition,” she continued, “using, for example, tobacco or cannabis causes inflammation in the lungs. It seems that, as a result, they end up being more vulnerable to infection by COVID. And this has consequences, above all, in terms of mortality.”

Another finding was that, among patients with substance use disorders, race had the largest effect on COVID risk. “From the very start, we saw that, compared with White individuals, Black individuals showed a much higher risk of not only getting COVID, but also dying from it,” said Dr. Volkow. “Therefore, on the one hand, our data show that drug users are more vulnerable to COVID-19 and, on the other hand, they reflect that within this group, Black individuals are even more vulnerable.”

In her presentation, Dr. Volkow drew particular attention to the impact that social surroundings have on these patients and the decisive role they played in terms of vulnerability. “It’s a very complex issue, what with the various factors at play: family, social environment. ... A person living in an at-risk situation can more easily get drugs or even prescription medication, which can also be abused.”

The psychiatrist stressed that when it comes to addictive disorders (and related questions such as prevention, treatment, and social reintegration), one of the most crucial factors has to do with the individual’s social support structures. “The studies also brought to light the role that social interaction has as an inhibitory factor with regard to drug use,” said Dr. Volkow. “And indeed, adequate adherence to treatment requires that the necessary support systems be maintained.”

In the context of the pandemic, this social aspect was also key, especially concerning the high death rate among substance use disorder patients with COVID-19. “There are very significant social determinants, such as the stigma associated with these groups – a stigma that makes these individuals more likely to hesitate to seek out treatment for diseases that may be starting to take hold, in this case COVID-19.”

On that note, Dr. Volkow emphasized the importance of treating drug addicts as though they had a chronic disease in need of treatment. “In fact, the prevalence of pathologies such as hypertension, diabetes, cancer, and dementia is much higher in these individuals than in the general population,” she said. “However, this isn’t widely known. The data reflect that not only the prevalence of these diseases, but also the severity of the symptoms, is higher, and this has a lot to do with these individuals’ reticence when it comes to reaching out for medical care. Added to that are the effects of their economic situation and other factors, such as stress (which can trigger a relapse), lack of ready access to medications, and limited access to community support or other sources of social connection.”
 

Opioids and COVID-19

As for drug use during the pandemic, Dr. Volkow provided context by mentioning that in the United States, the experts and authorities have spent two decades fighting the epidemic of opioid-related drug overdoses, which has caused many deaths. “And on top of this epidemic – one that we still haven’t been able to get control of – there’s the situation brought about by COVID-19. So, we had to see the consequences of a pandemic crossing paths with an epidemic.”

The United States’s epidemic of overdose deaths started with the use of opioid painkillers, medications which are overprescribed. Another issue that the United States faces is that many drugs are contaminated with fentanyl. This contamination has caused an increase in deaths.

“In the United States, fentanyl is everywhere,” said Dr. Volkow. “And what’s more concerning: almost a third of this fentanyl comes in pills that are sold as benzodiazepines. With this comes a high risk for overdose. In line with this, we saw overdose deaths among adolescents nearly double in 1 year, an increase which is likely related to these contaminated pills. It’s a risk that’s just below the surface. We’ve got to be vigilant, because this phenomenon is expected to eventually spread to Europe. After all, these pills are very cheap, hence the rapid increase in their use.”

To provide figures on drug use and overdose deaths since the beginning of the pandemic, Dr. Volkow referred to COVID-19 data provided by the National Center for Health Statistics (NCHS) at the U.S. Centers for Disease Control and Prevention. The data indicate that of the 70,630 drug overdose deaths that occurred in 2019, 49,860 involved opioids (whether prescribed or illicit). “And these numbers have continued to rise, so much so that the current situation can be classified as catastrophic – because this increase has been even greater during the pandemic due to the rise in the use of all drugs,” said Dr. Volkow.

Dr. Volkow referred to an NCHS study that looked at the period between September 2020 and September 2021, finding a 15.9% increase in the number of drug overdose deaths. A breakdown of these data shows that the highest percentage corresponds to deaths from “other psychostimulants,” primarily methamphetamines (35.7%). This category is followed by deaths involving synthetic opioids, mostly illicit fentanyl (25.8%), and deaths from cocaine (13.4%).

“These figures indicate that, for the first time in history, the United States had over 100,000 overdose deaths in 1 year,” said Dr. Volkow. “This is something that has never happened. We can only infer that the pandemic had a hand in making the overdose crisis even worse than it already was.”

As Dr. Volkow explained, policies related to handling overdoses and prescribing medications have been changed in the context of COVID-19. Addiction treatment consequently has been provided through a larger number of telehealth services, and measures such as greater access to treatment for comorbid conditions, expanded access to behavioral treatments, and the establishment of mental health hotlines have been undertaken.
 

Children’s cognitive development

Dr. Volkow also spoke about another of NIDA’s current subjects of research: The role that damage or compromise from drugs has on the neural circuits involved in reinforcement systems. “It’s important that we make people aware of the significance of what’s at play there, because the greatest damage that can be inflicted on the brain comes from using any type of drug during adolescence. In these cases, the likelihood of having an addictive disorder as an adult significantly increases.”

Within this framework, her team has also investigated the impact of the pandemic on the cognitive development of infants under 1 year of age. One of these studies was a pilot program in which pregnant women participated. “We found that children born during the pandemic had lower cognitive development: n = 112 versus n = 554 of those born before January 2019.”

“None of the mothers or children in the study had been infected with SARS-CoV-2,” Dr. Volkow explained. “But the results clearly reflect the negative effect of the circumstances brought about by the pandemic, especially the high level of stress, the isolation, and the lack of stimuli. Another study, currently in preprint, is based on imaging. It analyzed the impact on myelination in children not exposed to COVID-19 but born during the pandemic, compared with pre-pandemic infants. The data showed significantly reduced areas of myelin development (P < .05) in those born after 2019. And the researchers didn’t find significant differences in gestation duration or birth weight.”

The longitudinal characteristics of these studies will let us see whether a change in these individuals’ social circumstances over time also brings to light cognitive changes, even the recovery of lost or underdeveloped cognitive processes, Dr. Volkow concluded.

Dr. Volkow has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

MADRID, Spain – Individuals with substance use disorders are at higher risk of being infected by and dying from COVID-19 – even if they are fully vaccinated – compared with the general population. Such are the findings of a line of research led by Mexican psychiatrist Nora Volkow, MD, director of the U.S. National Institute on Drug Abuse (NIDA).

A pioneer in the use of brain imaging to investigate how substance use affects brain functions and one of Time magazine’s “Top 100 People Who Shape Our World,” she led the Inaugural Conference at the XXXI Congress of the Spanish Society of Clinical Pharmacology “Drugs and Actions During the Pandemic.” Dr. Volkow spoke about the effects that the current health crisis has had on drug use and the social challenges that arose from lockdowns. She also presented and discussed the results of studies being conducted at NIDA that “are aimed at reviewing what we’ve learned and what the consequences of COVID-19 have been with respect to substance abuse disorder.”

As Dr. Volkow pointed out, drugs affect much more than just the brain. “In particular, the heart, the lungs, the immune system – all of these are significantly harmed by substances like tobacco, alcohol, cocaine, and methamphetamine. This is why, since the beginning of the pandemic, we’ve been worried about seeing what consequences SARS-CoV-2 was going to have on users of these substances, especially in light of the great toll this disease takes on the respiratory system and the vascular system.”
 

Pulmonary ‘predisposition’ and race

Dr. Volkow and her team launched several studies to get a more thorough understanding of the link between substance abuse disorders and poor COVID-19 prognoses. One of them was based on analyses from electronic health records in the United States. The purpose was to determine COVID-19 risk and outcomes in patients based on the type of use disorder (for example, alcohol, opioid, cannabis, cocaine).

“The results showed that regardless of the drug type, all users of these substances had both a higher risk of being infected by COVID-19 and a higher death rate in comparison with the rest of the population,” said Dr. Volkow. “This surprised us, because there’s no evidence that drugs themselves make the virus more infectious. However, what the results did clearly indicate to us was that using these substances was associated with behavior that put these individuals at a greater risk for infection,” Dr. Volkow explained.

“In addition,” she continued, “using, for example, tobacco or cannabis causes inflammation in the lungs. It seems that, as a result, they end up being more vulnerable to infection by COVID. And this has consequences, above all, in terms of mortality.”

Another finding was that, among patients with substance use disorders, race had the largest effect on COVID risk. “From the very start, we saw that, compared with White individuals, Black individuals showed a much higher risk of not only getting COVID, but also dying from it,” said Dr. Volkow. “Therefore, on the one hand, our data show that drug users are more vulnerable to COVID-19 and, on the other hand, they reflect that within this group, Black individuals are even more vulnerable.”

In her presentation, Dr. Volkow drew particular attention to the impact that social surroundings have on these patients and the decisive role they played in terms of vulnerability. “It’s a very complex issue, what with the various factors at play: family, social environment. ... A person living in an at-risk situation can more easily get drugs or even prescription medication, which can also be abused.”

The psychiatrist stressed that when it comes to addictive disorders (and related questions such as prevention, treatment, and social reintegration), one of the most crucial factors has to do with the individual’s social support structures. “The studies also brought to light the role that social interaction has as an inhibitory factor with regard to drug use,” said Dr. Volkow. “And indeed, adequate adherence to treatment requires that the necessary support systems be maintained.”

In the context of the pandemic, this social aspect was also key, especially concerning the high death rate among substance use disorder patients with COVID-19. “There are very significant social determinants, such as the stigma associated with these groups – a stigma that makes these individuals more likely to hesitate to seek out treatment for diseases that may be starting to take hold, in this case COVID-19.”

On that note, Dr. Volkow emphasized the importance of treating drug addicts as though they had a chronic disease in need of treatment. “In fact, the prevalence of pathologies such as hypertension, diabetes, cancer, and dementia is much higher in these individuals than in the general population,” she said. “However, this isn’t widely known. The data reflect that not only the prevalence of these diseases, but also the severity of the symptoms, is higher, and this has a lot to do with these individuals’ reticence when it comes to reaching out for medical care. Added to that are the effects of their economic situation and other factors, such as stress (which can trigger a relapse), lack of ready access to medications, and limited access to community support or other sources of social connection.”
 

Opioids and COVID-19

As for drug use during the pandemic, Dr. Volkow provided context by mentioning that in the United States, the experts and authorities have spent two decades fighting the epidemic of opioid-related drug overdoses, which has caused many deaths. “And on top of this epidemic – one that we still haven’t been able to get control of – there’s the situation brought about by COVID-19. So, we had to see the consequences of a pandemic crossing paths with an epidemic.”

The United States’s epidemic of overdose deaths started with the use of opioid painkillers, medications which are overprescribed. Another issue that the United States faces is that many drugs are contaminated with fentanyl. This contamination has caused an increase in deaths.

“In the United States, fentanyl is everywhere,” said Dr. Volkow. “And what’s more concerning: almost a third of this fentanyl comes in pills that are sold as benzodiazepines. With this comes a high risk for overdose. In line with this, we saw overdose deaths among adolescents nearly double in 1 year, an increase which is likely related to these contaminated pills. It’s a risk that’s just below the surface. We’ve got to be vigilant, because this phenomenon is expected to eventually spread to Europe. After all, these pills are very cheap, hence the rapid increase in their use.”

To provide figures on drug use and overdose deaths since the beginning of the pandemic, Dr. Volkow referred to COVID-19 data provided by the National Center for Health Statistics (NCHS) at the U.S. Centers for Disease Control and Prevention. The data indicate that of the 70,630 drug overdose deaths that occurred in 2019, 49,860 involved opioids (whether prescribed or illicit). “And these numbers have continued to rise, so much so that the current situation can be classified as catastrophic – because this increase has been even greater during the pandemic due to the rise in the use of all drugs,” said Dr. Volkow.

Dr. Volkow referred to an NCHS study that looked at the period between September 2020 and September 2021, finding a 15.9% increase in the number of drug overdose deaths. A breakdown of these data shows that the highest percentage corresponds to deaths from “other psychostimulants,” primarily methamphetamines (35.7%). This category is followed by deaths involving synthetic opioids, mostly illicit fentanyl (25.8%), and deaths from cocaine (13.4%).

“These figures indicate that, for the first time in history, the United States had over 100,000 overdose deaths in 1 year,” said Dr. Volkow. “This is something that has never happened. We can only infer that the pandemic had a hand in making the overdose crisis even worse than it already was.”

As Dr. Volkow explained, policies related to handling overdoses and prescribing medications have been changed in the context of COVID-19. Addiction treatment consequently has been provided through a larger number of telehealth services, and measures such as greater access to treatment for comorbid conditions, expanded access to behavioral treatments, and the establishment of mental health hotlines have been undertaken.
 

Children’s cognitive development

Dr. Volkow also spoke about another of NIDA’s current subjects of research: The role that damage or compromise from drugs has on the neural circuits involved in reinforcement systems. “It’s important that we make people aware of the significance of what’s at play there, because the greatest damage that can be inflicted on the brain comes from using any type of drug during adolescence. In these cases, the likelihood of having an addictive disorder as an adult significantly increases.”

Within this framework, her team has also investigated the impact of the pandemic on the cognitive development of infants under 1 year of age. One of these studies was a pilot program in which pregnant women participated. “We found that children born during the pandemic had lower cognitive development: n = 112 versus n = 554 of those born before January 2019.”

“None of the mothers or children in the study had been infected with SARS-CoV-2,” Dr. Volkow explained. “But the results clearly reflect the negative effect of the circumstances brought about by the pandemic, especially the high level of stress, the isolation, and the lack of stimuli. Another study, currently in preprint, is based on imaging. It analyzed the impact on myelination in children not exposed to COVID-19 but born during the pandemic, compared with pre-pandemic infants. The data showed significantly reduced areas of myelin development (P < .05) in those born after 2019. And the researchers didn’t find significant differences in gestation duration or birth weight.”

The longitudinal characteristics of these studies will let us see whether a change in these individuals’ social circumstances over time also brings to light cognitive changes, even the recovery of lost or underdeveloped cognitive processes, Dr. Volkow concluded.

Dr. Volkow has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

MADRID, Spain – Individuals with substance use disorders are at higher risk of being infected by and dying from COVID-19 – even if they are fully vaccinated – compared with the general population. Such are the findings of a line of research led by Mexican psychiatrist Nora Volkow, MD, director of the U.S. National Institute on Drug Abuse (NIDA).

A pioneer in the use of brain imaging to investigate how substance use affects brain functions and one of Time magazine’s “Top 100 People Who Shape Our World,” she led the Inaugural Conference at the XXXI Congress of the Spanish Society of Clinical Pharmacology “Drugs and Actions During the Pandemic.” Dr. Volkow spoke about the effects that the current health crisis has had on drug use and the social challenges that arose from lockdowns. She also presented and discussed the results of studies being conducted at NIDA that “are aimed at reviewing what we’ve learned and what the consequences of COVID-19 have been with respect to substance abuse disorder.”

As Dr. Volkow pointed out, drugs affect much more than just the brain. “In particular, the heart, the lungs, the immune system – all of these are significantly harmed by substances like tobacco, alcohol, cocaine, and methamphetamine. This is why, since the beginning of the pandemic, we’ve been worried about seeing what consequences SARS-CoV-2 was going to have on users of these substances, especially in light of the great toll this disease takes on the respiratory system and the vascular system.”
 

Pulmonary ‘predisposition’ and race

Dr. Volkow and her team launched several studies to get a more thorough understanding of the link between substance abuse disorders and poor COVID-19 prognoses. One of them was based on analyses from electronic health records in the United States. The purpose was to determine COVID-19 risk and outcomes in patients based on the type of use disorder (for example, alcohol, opioid, cannabis, cocaine).

“The results showed that regardless of the drug type, all users of these substances had both a higher risk of being infected by COVID-19 and a higher death rate in comparison with the rest of the population,” said Dr. Volkow. “This surprised us, because there’s no evidence that drugs themselves make the virus more infectious. However, what the results did clearly indicate to us was that using these substances was associated with behavior that put these individuals at a greater risk for infection,” Dr. Volkow explained.

“In addition,” she continued, “using, for example, tobacco or cannabis causes inflammation in the lungs. It seems that, as a result, they end up being more vulnerable to infection by COVID. And this has consequences, above all, in terms of mortality.”

Another finding was that, among patients with substance use disorders, race had the largest effect on COVID risk. “From the very start, we saw that, compared with White individuals, Black individuals showed a much higher risk of not only getting COVID, but also dying from it,” said Dr. Volkow. “Therefore, on the one hand, our data show that drug users are more vulnerable to COVID-19 and, on the other hand, they reflect that within this group, Black individuals are even more vulnerable.”

In her presentation, Dr. Volkow drew particular attention to the impact that social surroundings have on these patients and the decisive role they played in terms of vulnerability. “It’s a very complex issue, what with the various factors at play: family, social environment. ... A person living in an at-risk situation can more easily get drugs or even prescription medication, which can also be abused.”

The psychiatrist stressed that when it comes to addictive disorders (and related questions such as prevention, treatment, and social reintegration), one of the most crucial factors has to do with the individual’s social support structures. “The studies also brought to light the role that social interaction has as an inhibitory factor with regard to drug use,” said Dr. Volkow. “And indeed, adequate adherence to treatment requires that the necessary support systems be maintained.”

In the context of the pandemic, this social aspect was also key, especially concerning the high death rate among substance use disorder patients with COVID-19. “There are very significant social determinants, such as the stigma associated with these groups – a stigma that makes these individuals more likely to hesitate to seek out treatment for diseases that may be starting to take hold, in this case COVID-19.”

On that note, Dr. Volkow emphasized the importance of treating drug addicts as though they had a chronic disease in need of treatment. “In fact, the prevalence of pathologies such as hypertension, diabetes, cancer, and dementia is much higher in these individuals than in the general population,” she said. “However, this isn’t widely known. The data reflect that not only the prevalence of these diseases, but also the severity of the symptoms, is higher, and this has a lot to do with these individuals’ reticence when it comes to reaching out for medical care. Added to that are the effects of their economic situation and other factors, such as stress (which can trigger a relapse), lack of ready access to medications, and limited access to community support or other sources of social connection.”
 

Opioids and COVID-19

As for drug use during the pandemic, Dr. Volkow provided context by mentioning that in the United States, the experts and authorities have spent two decades fighting the epidemic of opioid-related drug overdoses, which has caused many deaths. “And on top of this epidemic – one that we still haven’t been able to get control of – there’s the situation brought about by COVID-19. So, we had to see the consequences of a pandemic crossing paths with an epidemic.”

The United States’s epidemic of overdose deaths started with the use of opioid painkillers, medications which are overprescribed. Another issue that the United States faces is that many drugs are contaminated with fentanyl. This contamination has caused an increase in deaths.

“In the United States, fentanyl is everywhere,” said Dr. Volkow. “And what’s more concerning: almost a third of this fentanyl comes in pills that are sold as benzodiazepines. With this comes a high risk for overdose. In line with this, we saw overdose deaths among adolescents nearly double in 1 year, an increase which is likely related to these contaminated pills. It’s a risk that’s just below the surface. We’ve got to be vigilant, because this phenomenon is expected to eventually spread to Europe. After all, these pills are very cheap, hence the rapid increase in their use.”

To provide figures on drug use and overdose deaths since the beginning of the pandemic, Dr. Volkow referred to COVID-19 data provided by the National Center for Health Statistics (NCHS) at the U.S. Centers for Disease Control and Prevention. The data indicate that of the 70,630 drug overdose deaths that occurred in 2019, 49,860 involved opioids (whether prescribed or illicit). “And these numbers have continued to rise, so much so that the current situation can be classified as catastrophic – because this increase has been even greater during the pandemic due to the rise in the use of all drugs,” said Dr. Volkow.

Dr. Volkow referred to an NCHS study that looked at the period between September 2020 and September 2021, finding a 15.9% increase in the number of drug overdose deaths. A breakdown of these data shows that the highest percentage corresponds to deaths from “other psychostimulants,” primarily methamphetamines (35.7%). This category is followed by deaths involving synthetic opioids, mostly illicit fentanyl (25.8%), and deaths from cocaine (13.4%).

“These figures indicate that, for the first time in history, the United States had over 100,000 overdose deaths in 1 year,” said Dr. Volkow. “This is something that has never happened. We can only infer that the pandemic had a hand in making the overdose crisis even worse than it already was.”

As Dr. Volkow explained, policies related to handling overdoses and prescribing medications have been changed in the context of COVID-19. Addiction treatment consequently has been provided through a larger number of telehealth services, and measures such as greater access to treatment for comorbid conditions, expanded access to behavioral treatments, and the establishment of mental health hotlines have been undertaken.
 

Children’s cognitive development

Dr. Volkow also spoke about another of NIDA’s current subjects of research: The role that damage or compromise from drugs has on the neural circuits involved in reinforcement systems. “It’s important that we make people aware of the significance of what’s at play there, because the greatest damage that can be inflicted on the brain comes from using any type of drug during adolescence. In these cases, the likelihood of having an addictive disorder as an adult significantly increases.”

Within this framework, her team has also investigated the impact of the pandemic on the cognitive development of infants under 1 year of age. One of these studies was a pilot program in which pregnant women participated. “We found that children born during the pandemic had lower cognitive development: n = 112 versus n = 554 of those born before January 2019.”

“None of the mothers or children in the study had been infected with SARS-CoV-2,” Dr. Volkow explained. “But the results clearly reflect the negative effect of the circumstances brought about by the pandemic, especially the high level of stress, the isolation, and the lack of stimuli. Another study, currently in preprint, is based on imaging. It analyzed the impact on myelination in children not exposed to COVID-19 but born during the pandemic, compared with pre-pandemic infants. The data showed significantly reduced areas of myelin development (P < .05) in those born after 2019. And the researchers didn’t find significant differences in gestation duration or birth weight.”

The longitudinal characteristics of these studies will let us see whether a change in these individuals’ social circumstances over time also brings to light cognitive changes, even the recovery of lost or underdeveloped cognitive processes, Dr. Volkow concluded.

Dr. Volkow has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.