Active clinical trials for "Insulin Resistance"

Resveratrol is a natural polyphenol (a compound containing a phenol functional group) that can be found in many plants. The purpose of this research is to study the effects of resveratrol on the action of insulin (a hormone produced in the body by the pancreas that regulates the amount of sugar in the blood), fat accumulation, and inflammation in the body.

The primary study objective is to investigate the potential chronic beneficial effect of polyphenolics derived from strawberry on impaired insulin signaling in insulin resistant individuals through their ability to modulate oxidative- and inflammatory-markers that lead to devastating disease, including, but not limited to, diabetes and cardiovascular disease.

Type 2 diabetes is a major public health problem in India with an estimated a prevalence of approximately 4% and 12% in rural and urban areas respectively. Accumulating evidence suggests that serum cholecalciferol levels may be inversely related to the prevalence of diabetes, insulin resistance and metabolic syndrome. The trials available on the effect of Vitamin D supplementation on insulin/glucose metabolism have been conducted using small sample sizes in different subgroups document variable results (significant decrease in HbA1c concentration with insulin concentration in hemodialysis patients; insulin levels lower with oral Vitamin D in gestational diabetes; no effect of Vitamin D on serum insulin levels in post menopausal women). A double blind randomized controlled trial conducted at our institute using 3,60,000 IU of cholecalciferol over 6 weeks documented improvement in OGIS index of insulin sensitivity. We therefore, plan to study the long term effect of vitamin D supplementation on peripheral insulin sensitivity.

Laparoscopic adjustable gastric banding (LAGB) has been used worldwide to help selected morbidly obese adults to lose weight. The FDA has approved LAGB only for patients 18 years or older. Our hypothesis that LAGB can be used to assist selected adolescents between 14 and 17 years lose weight and that the procedure can be performed safely in this age group. We are also evaluating the effects of weight loss after LAGB on known comorbid conditions such as sleep apnea syndrome and insulin resistance, and also on psychological health.

The current prevalence of hypertension as part of the metabolic syndrome is substantial and is increasing with the rise of obesity worldwide. Chronic elevation of sympathetic nervous system (SNS) activity has been identified as a common and key factor in disease states as obesity-related hypertension (ORH). The renal sympathetic nerves are a major contributor to the complex pathophysiology of this elevated SNS activity. Percutaneous renal denervation (PRDN), the deliberate disruption of the nerves connecting the kidneys with the central nervous system, has been shown to be an effective means of modulating elevated SNS activity. This current study is an observational feasibility study, with the aim to investigate the effect of renal denervation on changes in insulin resistance and blood pressure in patients with obesity related hypertension. The investigators will study different variables: a laboratorial set, a set of blood pressure measurements and a set of investigations in the vascular laboratory. Hypothesis The investigators hypothesize that renal denervation has a beneficial effect on insulin resistance. The investigators hypothesize that there will be no complications related to the device or procedure.

The purpose of this study is to evaluate the effects of losartan, an ARB, on glucose metabolism and inflammatory cytokines in CHF patients treated with ACE inhibitors.

The reason for doing this study is to learn whether raising a person's vitamin D level from below normal to normal levels will improve his or her body's ability to use sugar. Vitamin D is well known to be an important vitamin for the development and maintenance of bones. Recently, scientists have learned that vitamin D may have a role in the prevention of cancer, diabetes, and autoimmune diseases. The investigators are specifically interested in studying this question in the overweight/obese population as they are at greater risk for both vitamin D deficiency and impaired ability to metabolize sugar (glucose intolerance). Primary Hypotheses: Vitamin D repletion (increasing the serum 25(OH)D level from ≤ 20 ng/ml to ≥ 30 ng/ml) will improve insulin sensitivity in individuals who are overweight/obese and insulin resistant. Secondary Hypotheses: 1.Vitamin D repletion will improve biomarkers of cardiovascular risk and inflammation (directly altering macrophage cytokine production and/or indirectly as a result of improvement in insulin sensitivity.) 2.30,000 IU (0.25 mg) weekly of cholecalciferol (vitamin D3) will raise serum 25(OH)D levels from ≤ 20 ng/ml to ≥ 30 ng/ml overweight/obese population.

The purpose is to investigate the effects of 2 different treatments (drospirenone/ethinyl estradiol versus rosiglitazone) on insulin sensitivity and androgen levels, inflammatory markers, vascular markers and bone development in overweight adolescent females with polycystic ovary syndrome (PCOS).

The purpose of the study was to assess the effects of equivalent diet- or exercise-induced weight loss and related insulin resistance in abdominally obese women.

The purpose of the study is to evaluate whether the addition of Diamel, a nutritional supplement, to hypocaloric diet and exercise could improve the histological results (steatosis, necro-inflammatory activity and fibrosis), insulin resistance, aminotransferase levels and anthropometric measures in comparison with a placebo-controlled group with hypocaloric diet and exercise during 52 weeks of treatment in patients with nonalcoholic steatohepatitis.