View clinical trials related to Insulin Resistance.
Filter by:The present study examined the effect of Montmorency tart cherry juice and capsules on functional and blood-based cardio-metabolic markers in humans with Metabolic Syndrome. Participants received a single bolus of Montmorency tart cherry juice, Montmorency tart cherry capsules and placebo in a random, crossover trial. Outcome variables were measured immediately pre- and up to 5 hours post-bolus. It was hypothesised that Montmorency tart cherry juice and capsules would improve cardio-metabolic markers. Furthermore, it was hypothesised that Montmorency tart cherry capsules would be more beneficial than Montmorency tart cherry juice due to increased bioavailability of phytochemicals.
Two important mechanisms play a major role in the pathogenesis of type 2 diabetes: insulin resistance of the target tissues and the impaired insulin secretion from pancreatic β-cells. Postprandial factors (such as insulin) are perceived by the human brain and induce signals that regulate glucose metabolism via the parasympathetic nervous system. Transcutaneous auricular vagus nerve stimulation (tVNS) can be used on the outer ear to stimulate the auricular branch of the vagus nerve in humans. Heart rate variability (HRV) in healthy people can be significantly increased via tVNS, indicating a shift from sympathetic activity to parasympathetic activity. The hypothesis is that this postprandial shift results in a change in peripheral glucose metabolism. In turn, the increased parasympathetic activity could potentially result in a change in postprandial insulin sensitivity or secretion. To test this hypothesis, this study investigates the effect of vagal stimulation versus sham stimulation on insulin sensitivity, on insulin secretion, glucose tolerance, resting energy expenditure, and on parasympathetic tone (analysis of heart rate variability).
The Metabolic Syndrome (MS) is a cluster of cardiometabolic risk factors, which include abdominal obesity, hyperglycemia, dyslipidemia, and high blood pressure. MS is considered a serious problem to health systems due to a current inability on implementing an effective prevention and treatment program. In Mexico 73% of adult population suffers obesity or overweight, this condition triggers the best studied pathophysiological mechanism; insulin resistance, which in turn precedes the diagnosis of diabetes and cardiovascular disease, that are the main cause of general mortality in Mexico, thus the prevention and timely treatment of this condition are now a priority. Actual pharmacological therapy is designed to control its components individually, however, there are great interest in developing new therapeutic lines that improve more than one component simultaneously and thereby increase the cost-benefit and effectiveness of the therapy. Fucoxanthin is a functional element present in seaweed species. Several studies have offered certain perspectives on its action mechanism and safety. The information available is favorable for weight control in overweight subjects, but its activity in glucose levels, lipid metabolism and blood pressure is inconsistent. It represents a natural option with great interest in this research, since it could be a new, safe and effective therapy in the MS. The aim of this study is to evaluate the effect of fucoxanthin on the components of the MS, insulin sensitivity and insulin secretion. The investigators hypothesis is that Fucoxanthin modifies the components of the MS, insulin sensitivity and insulin secretion
Hepatitis C virus (HCV) is one of the major globally cause of death and morbidity.Chronic hepatitis C is the leading cause of end-stage liver disease, hepatocellular carcinoma and liver-related death in Egypt.It could be considered a special type of metabolic diseases involving insulin resistance (IR) which accelerates fibrosis and modulation of lipid-cholesterol biosynthesis with increased risk for ischemic heart diseases.It could be considered a special type of metabolic diseases involving insulin resistance (IR) which accelerates fibrosis and modulation of lipid-cholesterol biosynthesis with increased risk for ischemic heart diseases .Increased prevalence of IR and type 2 diabetes mellitus extensively reported in HCV infections
Dihydromyricetin has demonstrated promising effects in glycemic control, insulin sensitivity and insulin secretion, that above mentioned findings show that dihydromyricetin has an excellent potential effect in the treatment of type 2 diabetes mellitus patients.
The purpose of the research is to determine if protein and omega-3 fatty acid supplementation improve sleep, improve body composition, and improve markers of metabolic health in postmenopausal women.
This study is designed to determine the impact of extending sleep duration on glucose metabolism in people with obesity. Half of the participants will be instructed to increase their time-in-bed by one hour (sleep extension) while the other half will be be instructed to maintain their current sleep habits.
Metabolic syndrome is a collection of metabolic disorders. Abdominal obesity, dyslipidemia, reduced levels of high-density lipoprotein cholesterol, increased levels of serum triglyceride, insulin resistance are among the risk factors for metabolic syndrome and it has a global prevalence of 10 - 50 %. Alpha-lipoic acid or thioctic acid is an antioxidant that may have effects on inflammatory pathways, glucose control indicators, blood pressure, lipid profiles, body weight, fat mass, and food intake regulation. This study will be conducted as a parallel randomized double-blind clinical trial. In this study, 44 patients will be enrolled from endocrine and metabolism center of Shariati Hospital where their metabolic syndrome was diagnosed by an endocrinologist. At the beginning of the study written a self -administration will be taken from all patients. In this study, patient will be randomly divided into two groups, each will be received supplement or placebo for 12 weeks. 22 of patients will be consume 600 mg Alpha lipoic acid for 12 weeks and 22 of patients will be consume 600 mg placebo (starch-filled) capsules daily. Both supplementation and placebo are provided from "Sepehr Drug and Treatment" company. Before the study, containers will be coded as A and B by a person other than the study researchers according to concealment rules. Physical activity information will be collected using short-IPAQ (International Physical Activity Questionnaire) and demographic information through a general information questionnaire. In order to evaluate dietary intake of patients in terms of energy(kcal/(day), carbohydrate(gr/day), protein(gr/day), fat intake(gr/day), SFA (Saturated fatty acids) (gr/day), MUFA (Monounsaturated fatty acids) (gr/day), PUFA (Polyunsaturated fatty acids)(gr/day), Vitamin E(mg/day), Vitamin C(mg/day), Beta-carotene(mg/day) and Sodium intake (mg/day), 24-hr recalls will be completed by interviewing the patient for 3 days (two normal days and a weekend day). Weight will be measured with the minimum dress and without shoes by using a digital balance scale of 100 grams and height will be measured without shoes by meters mounted to the wall with an accuracy of 0.1 centimeters. Then the body mass index will be calculated by dividing the weight (kg) by the square of the height (m), waist circumference will be measured in the narrowest area between the lowest lumbar spine and the iliac bone (cm), systolic and diastolic blood pressure will be measured after 15 minutes of rest, twice using the mercuric barometric measure and the mean will be reported as individual blood pressure. The blood sample will be taken after 12 hours of overnight fasting in two groups for measuring fasting blood glucose(mg/dL), lipid profile(mg/dL), glycosylated hemoglobin(percentage), serum insulin concentration (uIU/ml) ,TAC (Total antioxidant capacity) (umol/L), CRP (C-reactive protein) (ng/ml) and TNF-a (Tumor necrosis factor-a ) (pg/ml)and will be used the HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) formula to determine insulin resistance. All these steps will be completed at the start and end of the study. At the end of the study, counting the remaining capsules, the patient's compliance rate will be evaluated, and patients who have not consumed less than 90% of their capsules will be excluded from the analysis.
Insulin resistance is a key mechanism in metabolic disorders, which has also been implicated in the development of pulmonary hypertension. In this pilot study, the investigators´ goal is to directly determine insulin sensitivity in idiopathic pulmonary arterial hypertension patients and to compare the results with data from healthy controls.
Type 2 diabetes (T2D) in youth is increasing in prevalence in parallel with the obesity epidemic. In the US, almost half of patients with renal failure have DKD, and ≥80% have T2D. Compared to adult-onset T2D, youth with T2D have a more aggressive phenotype with greater insulin resistance (IR), more rapid β-cell decline and higher prevalence of diabetic kidney disease (DKD), arguing for separate and dedicated studies in youth-onset T2D. Hyperfiltration is common in youth with T2D, and predicts progressive DKD. Hyperfiltration may also be associated with early changes in intrarenal hemodynamic function, including increased renal plasma flow (RPF) and glomerular pressure. Despite the high prevalence and gravity of DKD in youth-onset T2D, widely effective therapeutic options are lacking. The investigators' preliminary data support a strong association between IR and hyperfiltration in youth-onset T2D, but the pathology contributing to this relationship remains unclear. A better understanding of the pathophysiology underlying hyperfiltration and its relationship with IR is critical to inform development of new therapeutics. The investigators' overarching hypotheses are that: 1) hyperfiltration in youth-onset T2D is associated with changes in intrarenal hemodynamics, resulting in increased renal oxygen demand, 2) the demand is unmet by the inefficient fuel profile associated with IR (decreased glucose oxidation and increase free fatty acid [FFA] oxidation), resulting in renal hypoxia and ultimately renal damage. To address these hypotheses, the investigators will measure peripheral insulin sensitivity, adipose insulin sensitivity (FFA suppression), glomerular filtration rate (GFR), RPF, and renal oxygenation in youth with T2D (n=60), obesity (n=20) and in lean (n=20) controls. To further investigate the mechanisms of renal damage in youth with T2D, two optional procedures are included in the study: 1) kidney biopsy procedure and 2) induction of induced pluripotent stem cells (iPSCs) to assess morphometrics and genetic expression of renal tissue.