Effects of Selective Inhibition of Cholesterol Absorption With Ezetimibe on Intestinal Cholesterol...
Metabolic Syndrome XEzetimibe has been shown to inhibit cholesterol absorption and several lines of evidence from in vitro systems and animal models suggest that this effect is associated with an increase in low-density lipoprotein (LDL) receptor expression in the small intestine. The impact of a treatment with ezetimibe on intestinal gene expression and protein mass levels of LDL receptor and other key genes involved in intestinal cholesterol homeostasis will be examined in dyslipidemic men with insulin-resistance. In the present study, gene expression studies and protein mass levels will be assessed on duodenal biopsies by real-time polymerase chain reaction (rt-PCR) and liquid chromatography-mass spectrometry (LC-MS/MS), respectively. The primary objective of this proposal is to examine the effects of ezetimibe on intestinal gene expression (rt-PCR) and protein mass levels (LC-MS/MS) of LDL receptor in dyslipidemic men with insulin-resistance. The secondary objective is to examine the impact of ezetimibe treatment on intestinal gene expression and protein mass levels of sterol regulatory element-binding protein (SREBP)-2, Niemann-Pick C1-Like1 (NPC1L1), ATP binding cassette gene (ABCG)-5/8, proprotein convertase subtilisin/kexin type 9 (PCSK9) and 3-hydroxy-3-methyl-glutaryl-CoA (HMG CoA) reductase. Primary hypothesis Treatment with ezetimibe 10 mg/day will significantly increase duodenal mRNA and protein mass levels of LDL receptor in dyslipidemic men with insulin-resistance. Secondary hypothesis Treatment with ezetimibe 10 mg/day will significantly increase duodenal mRNA and protein mass levels of SREBP-2, NPC1L1, ABCG5/8, PCSK9 and HMG CoA reductase in dyslipidemic men with insulin-resistance.
Mechanisms of Sleep Latency and Health: The Effect of a Melatonin Receptor Agonist in Inflammation...
InsomniaThe purpose of this study is to help scientist better understand the effect of a 12-week single daily evening dose of ramelteon (Rozerem ©), a drug that has been approved by the U. S. Food and Drug Administration (FDA) for the treatment of insomnia (trouble falling asleep or staying asleep). The study will measure levels of inflammation, fasting insulin and fasting glucose (sugar) in subjects who are taking either ramelteon (8 mg) or placebo.
Adipokines in Obese Adolescents With Insulin Resistance
ObesityThe purpose of this study is to compare serum concentrations of inflammatory cytokines, interleukin 6 (IL-6), High-sensitivity C-reactive protein (hs-CRP), adiponectin, and tumour necrosis factor alpha (TNFα), before and after three months treatment with metformin in obese adolescents with insulin resistance (IR).
The Suppression of Toll Like Receptors by Insulin
Insulin ResistanceThis study will help us understand the possible beneficial effects of insulin in inflammation. Inflamamtion is considered to be the cause of atherosclerosis and heart disease.
Race, Menopause and Metabolism After Exercise and Diet
ObesityInsulin Resistance1 moreThe purpose of this study is to test the hypotheses that there are ethnic and genetic differences in the mechanisms and magnitude by which hypocaloric weight loss and aerobic exercise affect body composition, glucose, lipid, muscle and adipose tissue metabolism in overweight, insulin resistant postmenopausal women. This will be tested in a trial comparing the effects of weight loss vs. aerobic exercise plus weight loss on glucose, lipid, fat and muscle metabolism in overweight African American and Caucasian postmenopausal women.
The Effect of Calcium Supplementation on Insulin Resistance and 24h Blood Pressure
HypertensionDiabetes1 moreIncreased levels of intracellular calcium are thought to diminish maximal cellular response to insulin and induce insulin resistance. Also, both hypertension and diabetes are thought to be conditions of altered intracellular ionic state. The aim of the present study is to investigate the possible effect of oral calcium supplementation on intracellular ions, insulin sensitivity, 24-h blood pressure and sodium/hydrogen exchanger activity in patients with type 2 diabetes and essential hypertension.
Effects of Weight Loss on Hepatic and Muscle Lipid Content and on Insulin Sensitivity on Obese Adolescents...
Fatty LiverInsulin ResistanceTo assess whether reversal of fatty liver by moderate weight loss (8% of body weight) will lead to improvements in insulin sensitivity, which will be associated with changes in both glucose status and lipid profiles, in obese children and adolescents with fatty liver who have normal glucose or pre-diabetes.
Exercise Dose-Response on Features of the Metabolic Syndrome
Insulin ResistanceMetabolic Syndrome1 moreThis study investigates the degree of improvement in insulin resistance and features of the metabolic syndrome in non-diabetic overweight or obese subjects after training in a low-intensity, moderate-intensity or non-aerobic exercise program, as well as self-initiated exercise behavior after the assigned exercise program.
Treatment of Hyperandrogenism Versus Insulin Resistance in Infertile Polycystic Ovary Syndrome (PCOS)...
Polycystic Ovary SyndromeThe goal of this three-armed randomized controlled trial is to establish the relative roles of treatment of hyperandrogenism versus obesity (as the largest modifiable factor contributing to insulin resistance) in treating infertility and improving pregnancy outcomes among obese PCOS women. The investigators hypothesize that the key to restoring ovulation leading to live birth is to correct hyperandrogenism with oral contraceptive pills, but the key to avoiding later pregnancy complications is to improve insulin sensitivity with weight loss.
Effect of Gynostemma Pentaphyllum Tea in Insulin Sensitivity in Type 2 Diabetic Patients
Type 2 DiabetesThe aim of the present study was to investigate the effects of Gynostemma Pentaphyllum tea on insulin sensitivity in drug-naïve type 2 diabetic patients.