Active clinical trials for "Insulin Resistance"

Studies in the literature suggest that people with obesity have an excess of stored iron. There is possibly an inverse relationship between ferritin levels and the actions of insulin on glycemic control. The reduction of stored iron by simply donating blood could result in improvements in glycemic control in people with obesity and prediabetes. We propose, to reduce ferritin levels through a standard donation of a unit of whole blood, and to measure if it positively affects glycemic control.

Dementia is a leading cause of death in the United States among aging adults. Brain insulin resistance has emerged as a pathologic factor affecting memory, executive function as well as systemic glucose control. Regular aerobic exercise decreases Alzheimer's Disease (AD) risk, in part, through changes in brain structure and function. However, there is limited data available on how exercise impacts brain insulin resistance in aging. This study will test the effect of acute exercise on brain insulin sensitivity in middle-aged to older adults. The study will also examine cognition and cardiometabolic health in relation to brain insulin sensitivity.

miRNAs are small non-coding RNAs of approximately 22 nucleotides in length, which have the function of regulating gene expression at the post-transcriptional level through base complementation of protein-coding transcripts, this interaction leading to translational repression by destabilizing the messenger RNA. Evidence demonstrates an association between differences in miRNA expression and the development of various pathologies, including obesity, type 2 diabetes, cardiovascular disease, neurodegenerative disorders and cancer. Other factors that could also modulate miRNA expression include nutritional status, diet and even exercise. The aim of this study is to identify exosome microRNAs that modify their expression in plasma from patients with insulin resistance fed different dietary protein sources. A randomized controlled clinical trial will be performed where the selected participants will be assigned by lottery to a dietary intervention of usual diet with protein of plant or animal origin for 4 weeks. The study will consist of 3 visits where anthropometric parameters, body composition, systolic and diastolic blood pressure, dietary compliance through 24-hour recall and food logs, biochemical tests (insulin, glucose, triglycerides, total cholesterol, HDL, LDL), the relative expression of plasma exosome miRNAs and markers of oxidative stress will be evaluated. Participants will receive a weekly food pantry during the first two visits in order to improve compliance to the dietary intervention.

This is a 12-month, single center, three-arm parallel design, double-blind, randomized clinical trial, to compare the effects of supplemental dietary fiber and metformin (MET) alone and in combination over 12 months on glucose metabolism (insulin resistance [IR]), inflammation and BMI in adolescents with obesity and IR, and to assess the relationship between therapeutic intervention(s) and changes in gut microbiome composition and function. Since MET and FIBER have been shown to reduce weight and increase insulin sensitivity through distinct but overlapping mechanisms of action, our central hypothesis is that the combination of FIBER + MET will have a synergistic effect and be more effective than FIBER or MET alone in improving metabolic function (IR) and reducing BMI and inflammation in adolescents with obesity, IR and family history (FM) of T2DM. .

The purpose of this study is to define the effect of ultrasound exposure of the liver in the region of the porta hepatis on glucose homeostasis and insulin resistance in healthy subjects.

Diabetic kidney disease and cardiovascular disease remain the leading causes of morbidity and mortality in people with type 1 diabetes and are exacerbated with longer duration of diabetes and time outside goal glycemic range. Yet, type 1 diabetes is a complex disease with pathophysiology that extends beyond beta-cell injury and insulin deficiency to include insulin resistance and renal vascular resistance, factors that accelerate cardiovascular disease risk. We have shown that metformin improved peripheral insulin sensitivity and vascular stiffness in youth with type 1 diabetes on multiple daily insulin injections or standard insulin pumps. However, metformin's effect on kidney and endothelial outcomes, and the effects of type 1 diabetes technologies, with or without metformin, on any cardiovascular or kidney outcome, remains unknown. Automated insulin delivery systems combine an insulin pump, continuous glucose monitor, and control algorithm to modulate background insulin delivery and decrease peripheral insulin exposure while improving time in target range and reducing hypoglycemia. We hypothesize that automated insulin delivery systems, particularly when combined with metformin, may modulate renal vascular resistance and insulin sensitivity, thereby impacting cardiometabolic function. MANATEE-T1D is a randomized, double-blind, placebo-controlled trial of 4 months of metformin 2,000 mg daily in 40 youth aged 12-21 years with type 1 diabetes on automated insulin delivery systems vs. 20 control youth with type 1 diabetes on multiple daily injections plus a continuous glucose monitor which will assess for changes in calculated renal vascular resistance and gold standard measures of whole-body and adipose insulin sensitivity, arterial stiffness, and endothelial function.

Hardening of the blood vessels, called arterial stiffness, is a risk factor for future heart disease and its causes are unclear. The proposed study will 1) randomly assign adolescents at high risk of stiffening blood vessels to take a protein supplement called carnitine and study its effects on arterial stiffening and 2) study carnitine related genes for their effect on arterial stiffening. The study will definitively establish a role for carnitine action as a cause of stiffening blood vessels and signal a way to treat or prevent stiffening.

Black individuals are more likely to have decreased insulin sensitivity which results in a high risk for the development of cardiometabolic disease. The reasons for this are incompletely understood. Natriuretic peptides (NPs) are hormones produced by the heart that play a role in regulating the metabolic health of an individual. Low circulating level of NPs is an important contributor to increased risk for diabetes. The NP levels are relatively lower among Black individuals thus affecting their metabolic health and putting them at a higher risk for diabetes. This study aims to test the hypothesis that by augmenting NP levels using sacubitril/valsartan, among Black Individuals one can improve their metabolic health (as measured by insulin sensitivity & energy expenditure) and help establish the role of NPs in the underlying mechanism behind increased risk for cardiometabolic disease in these population.

We aim to determine the effect of combined isocaloric time restricted eating and meal timing on metabolic health, liver fat, functional brain networks, inflammation, and sleep pattern/quality in subjects with obesity and insulin resistance.

Comparing between the efficacy of high intensity interval training and moderate intensity aerobic exercises on insulin resistance in type 2 Diabetes Mellitus.