Active clinical trials for "Insulin Resistance"

Type 2 diabetes mellitus (T2DM) is a progressive disease and early intervention and prevention strategies are therefore very important. An important early hallmark in the development of T2DM is insulin resistance. Since the majority of postprandial glucose disposal occurs in skeletal muscle, improving muscle insulin sensitivity will thus have a major impact on disease prevention. Abdominally obese men and women have an increased risk to develop T2DM, and are also characterized by an impaired vascular function. This may hamper proper delivery of insulin, glucose and oxygen to muscles, thereby contributing to - and possibly causing - muscle insulin resistance. Earlier it has been shown that supplementation with L- arginine improves vascular function by improving nitric oxide (NO) bioavailability. These NO- mediated beneficial effects on vascular function may improve delivery of insulin, glucose and oxygen to the muscle tissue, thereby improving muscle insulin sensitivity and mitochondrial function. However, the doses needed of this amino acid cannot be provided by regular diets or supplements, also due to the bitter taste of L-arginine. Alternatively, smaller amounts of L- arginine with a specific combination of other nutritional components (i.e. nitrate and nitrite), which are already part of the regular diet and support alternative pathways to improve NO- mediated vascular function, may also induce beneficial effects. The investigators now hypothesize that in abdominally obese adults with impaired fasting glucose concentrations L-arginine combined with nitrate/nitrite increases muscle insulin sensitivity.

The purpose of pilot trial is to compare the efficacy of lifestyle intervention, metformin intervention, lifestyle combined with metformin intervention in improving assisted reproductive technology in non-polycystic ovary syndrome(pcos) patients with overweight/obesity and insulin resistance compared with conventional clinical education. Subjects who meet the inclusion criteria will be randomized to four groups: lifestyle intervention group, metformin intervention group, lifestyle combined with metformin intervention group, and routine clinical education group. Subjects of above three intervention group will start ovulation stimulation treatment after reach the aim or duration of intervention and routine clinical education group has no intervention. All subjects are treated with the same procedures, including a long ovarian stimulation regimen, oocyte retrieval, and fertilization, followed by a planned transfer of two day-3 embryos. The primary outcome is ongoing pregnancy rate.

Previous preclinical investigations have found that Medicago sativa promotes the decrease of glucose concentrations. To evaluate the acute effect of Medicago sativa administration on glucose tolerance, insulin secretion, and insulin sensitivity in healthy individuals.

Gut microbiota may play a key role in many metabolic diseases, including type 2 diabetes (T2D). Consumption of high-fat/high-sugar western diet seem to alter human resident microbiota towards reduced genetic diversity and to influence its metabolic activity towards enhanced energy extraction. Plant-based diets are effective in the treatment of T2D but it is not clear whether their effect results solely from diet composition or whether it is mediated, at least partly, by different microbiota and its metabolic activity. One possible therapeutic approach is replacement of "pro-diabetic" microbiota with its "healthy" variant but what the "healthy" microbiota is and under which conditions this microbiota could stay stable and functional is not known. The aim of the proposed study is to identify possible metagenome/metabolome characteristics in different human cohorts (T2D vs vegans), to assess the stability of vegan microbiota in T2D-like environment and to evaluate the possibility to influence human T2D microbiota/metabolome towards more protective composition by dietary intervention.

The prevention of obesity and its main medical complications, such as hypertension, type 2 diabetes and cardiovascular diseases, have been become a health priority. One of the most frequent metabolic complications in obesity is the insulin resistance and is the most important risk factor for the development of coronary diseases. The weight loss induced by the restriction of dietary energy is the cornerstone of therapy for people with obesity, as it improves or even regularizes insulin sensitivity and related comorbidities. However, weight loss induced by diet also decreases lean tissue mass, which could result in adverse effects on physical function. Although, regularly recommended to increase protein intake during weight loss, there is evidence to suggest that high protein intake could have deleterious metabolic effects. On the other hand, there is an association between the type of protein consumption, mainly the concentration of branched-chain amino acids (BCAAs) and insulin resistance during the dietary energy restriction in the therapy of obesity. There are multiple factors that influence the concentration of BCAAs and insulin resistance, which can be by phenotypic or genetic modification. The phenotypic modification refers to race, sex and dietary pattern. Meanwhile, the genetic modification refers to the activity of the enzymes responsible for the catabolism of BCAAs and genetic variants, such as the polymorphisms of a single nucleotide of said enzymes. A randomized controlled trial will be conducted with 160 participants (80 women and 80 men) divided by a draw in 4 groups, each for 20 participants. A feeding plan will be assigned according to the distribution of proteins (standard or high) and type of protein (animal or vegetable). The main aim of this study is to evaluate the effect on the amount and type of dietary protein and energy restriction on insulin resistance in subjects with obesity in a period of 1 month, considering the main factors that influence the concentration of BCAAs. In this way, evidence will be provided on what type of dietary intervention is most convenient for weight loss in subjects with insulin resistance and obesity.

Introduction. Insulin resistance (IR) accompanies practically half of children with obesity. This alteration is the border between what can be reversible or permanent. Among the comorbidities associated with IR are T2D and cardio and cerebrovascular diseases, which are the leading causes of death in Mexico. It has been said that the prevention of obesity rather than its treatment is the way to contain this problem. It has been proposed to supplement obese children with IR with ω-3 polyunsaturated fatty acids (PUFA) or ω-9 monounsaturated fatty acids (MUFA) to determine their ability to reverse these alterations. Objetive. To evaluate the effect of supplementing PUFA ω-3, PUFA ω-9 or both, on the change in anthropometric and metabolic parameters in obese children with IR. Methods. Clinical trial, randomized triple-blind, in which obese children with IR participated. Intervention. Three groups were integrated that received one of the following treatments for three months: Group 1: PUFA ω-3 1.8 g/day; Group 2: PUFA ω-3 0.9 g/day + PUFA ω-9 0.9 g/day (avocado oil). Group 3: MUFA ω-9 1.8 g/day. Tracing. For 2 more months he continued his clinical surveillance. Anthropometric and metabolic profile measurements were made at baseline, 3 and 5 months. Throughout the study, all three child groups received nutritional counseling, but no calorie-restricted diets or exercise programs were used.

The gut microbiome is a complex ecosystem with a wide range of functions, and it is thought that it can influence multiple processes in the human body. In turn, the composition and activity of the gut microbiome is affected by many factors as well. Antibiotics can be very effective in treating bacterial infections, but they are also associated with detrimental health effects. Previous studies have already shown that antibiotics disturb the human gut microbiome composition by destroying commensal bacteria. As it is well known that the microbiome influences host metabolism, perturbation of the healthy microbiome (dysbiosis) is thought to be disease causing. Prebiotics, on the other hand, are beneficial for the gut microbiome. These so-called indigestible fibers are naturally present in our foods, but cannot be metabolised by the human body. Many bacteria in the human gut are able to ferment these fibers and they subsequently produce beneficial products for the rest of the body. Besides this, fiber intake stimulates growth of commensal bacteria in the human gut. Although it has become increasingly clear that prebiotics have a beneficial effect on the gut microbiome and general health, it is still unclear to which extent the beneficial effects of prebiotics supplementation occur after the gut microbiome is disturbed by antibiotics. We hypothesize that prebiotic supplementation after antibiotics use will improve restoration of the gut microbiome to a healthy state compared to placebo.

Impaired fasting glucose (IFG) is a condition that precedes diabetes and increases the risk of developing it. Studies support the hypoglycemic effect of Cynara cardunculus (Cs) extracts due to the content of chlorogenic acid, which is a potent inhibitor of glucose 6-phosphate translocase and of dicaffeoylquinic acid derivatives that modulate the activity of alpha-glucosidase. Given this background, we investigated whether a new highly standardized Cs extract could improve glycaemic control, insulin sensitivity and other metabolic parameters (total, HDL and LDL cholesterol, Triglycerides, ApoB, ApoA, waist circumference, Visceral adipose tissue by DXA) in overweight subjects with newly diagnosed IFG.

PURPOSE: to determine the effect of aerobic exercise training and diet on sex hormones , insulin resistance and depression and if is there correlation between these factors effect in postmenopausal obese women BACKGROUND: The practice of regular physical activity is recommended worldwide by different public health agencies for primary or secondary prevention of many health problems, including cancers. In particular, physical activity is associated with a 25 % reduction in the average risk of cardiovascular diseases among women, and this protective effect appears to be independent of menopausal status. Many interrelated biological mechanisms may underlie this association, such as the effect of physical activity on glucose metabolism, inflammation, immune function, and sex hormones. Indeed, endogenous sex hormones, particularly estrogens, seem to be involved in the initiation, promotion, and progression of tumors. Prolonged exposure to high endogenous hormone levels is considered one of the main risk factors for female breast cancer, with a relative risk of 2.00 (95 % confidence interval (CI): 1.47-2.71) for postmenopausal women with the highest estradiol levels . Several observational studies have found an inverse association between physical activity and circulating estrogen levels . This effect may be mediated by the decrease in fat mass, the main source of estrogens in postmenopausal women. It may also be mediated by the disruption of the menstrual cycle before menopause , especially when exercise is associated with low energy intakes. However, the assessment of the exposure to physical activity remains imprecise, because it is generally only possible to measure it in naturally living subjects using questionnaires . HYPOTHESES: may have no Correlation between sex hormones and insulin resistance and depression in response to exercise and diet in postmenopausal obese women RESEARCH QUESTION: Is there Correlation between sex hormones and insulin resistance and depression in response to exercise and diet in postmenopausal obese women?

This study will investigate the effects of 6 week Nicotinamide Riboside supplementation (1000 mg/day) on metabolic health in healthy (pre)obese humans. The primary objective will be hepatic and whole body insulin sensitivity. Secondary objectives, to provide information about the underlying mechanism, will be muscle mitochondrial function, brown fat activity, ectopic lipid accumulation, energy metabolism, cardiovascular risk parameters, body composition and acetylcarnitine levels.