Transcript
A (0:04)
Welcome to the American Diabetes Association Diabetes Core Update, where we will regularly keep you up to date on the latest clinically relevant articles from the American Diabetes Association's four science and medical journals, Diabetes, Diabetes Care, Clinical Diabetes and Diabetes Spectrum. Joining us for this program are Dr. Neal Skolnick, who is a professor of Family Medicine at Temple University School of Medicine and Associate Director in the Family Medicine Residency Program at Abington Memorial Hospital. Welcome, Dr. Skolmik.
B (0:37)
Thank you. It's a pleasure to be here.
A (0:39)
And Dr. John Russell, who is a Professor of Family Medicine at Temple University School of Medicine and Director in the Family Medicine Residency Program at Abington Memorial Hospital.
C (0:49)
Thank you. I'm looking forward to going over this week's articles.
A (0:53)
And now for the articles.
B (0:55)
We have another excellent issue this month, beginning with an article from Diabetes on genetic evidence for healthy obesity, then from Diabetes, the metabolic effects of monounsaturated fatty acid diet compared to high carb diets, then an article on advancing basal insulin therapy, lixisenatide versus basal plus or basal bolus therapy, followed by an intriguing article on text messaging to augment lifestyle modification, then an article on saxagliptin and predictors of hypoglycemia, and finally weight loss and weight regain and its association with cardiovascular risk factors.
C (1:41)
Our first article is from the journal Diabetes and it looked at the genetic evidence for a link between favorable adiposity and lower risk of type 2 diabetes, hypertension and heart disease. This study looked at over 164,000 individuals from the UK Biobank and five other studies to replicate an association between a genetic score of 11 favorable adiposity variants in risk of disease and looking at the interactions between BMI and favorable adiposity in genetics. So in the UK Biobank, over 50% of individuals carried the most favorable adiposity alleles, had higher BMIs and higher body fat percentage compared to the 50% of individuals carrying the fewest alleles for a given BMI. The 50% of individuals carrying most favorable adiposity alleles were at A decreased risk 0.83 odds ratio of developing diabetes, a decreased odds ratio of 0.935, developing hypertension and a decreased odds ratio of 0.921 of developing heart disease.
B (2:44)
Neil John this is really an intriguing study showing a relationship between certain genetic alleles and good health outcomes even in patients with higher BMIs. We've known for a long time what has been termed the obesity paradox, that is when we look at large epidemiologic data, even though we know obesity to be related to the development of diabetes, hypertension, high cholesterol. When we look at total mortality, it turns out that people who are overweight tend to do better than people who are normal weight. And it is not until you get to the morbidly obese, that's a bmi greater than 35 that you begin to see increased mortality. And that's always been puzzling and therefore called the obesity paradox. This study begins to explain some of that and it might be, or it appears to be from this that there are certain people with now well defined genetic tendencies to accumulate fat in a healthy manner rather than an unhealthy manner. And those people have in fact a lower risk of mortality than those individuals who become obese or overweight who don't have those healthy alleles. This really suggests the difference between individualized medicine or personalized medicine, which we are moving toward, versus the use of aggregate data, which is where we always have been coming from. So we see these large associations and large populations that don't necessarily translate to outcomes in individuals. That is of course the whole area of genomics, which is where medicine is moving towards. So this study is really a nice advance defining specific alleles which are associated with potentially healthy outcomes in obese individuals. Our next study is on the metabolic effects of fatty acid enriched diets compared to carbohydrate enriched diets in patients with type 2 diabetes. Published in the August edition of Diabetes Care. Dietary interventions in patients with type 2 diabetes are important as an approach to care. While a healthy diet is critical, there's still uncertainty about the optimal macronutrients composition. In this study, the authors performed meta analysis comparing diets high in monounsaturated fatty acids to diets high in carbohydrates or to diets that had polyunsaturated fatty acids on metabolic risk factor outcomes in patients with type 2 diabetes. The authors identified 24 studies over 1400 participants comparing high monounsaturated fatty acid diets to high carb diets and four studies comparing comparing two high polyunsaturated fatty acid diets. When comparing high monounsaturated fatty acid diets to high carb diets, there were significant reductions in fasting plasma glucose, triglycerides, body weight, actually 3 pounds and systolic blood pressure along with significant increases in HDL. When high monounsaturated fatty acid diets were compared to high polyunsaturated fatty acid diets, there were significant reductions in fasting plasma glucose.