View clinical trials related to Metabolic Syndrome X.
Filter by:A prolonged elevation of plasma free fatty acids (FFA) impairs glucose stimulated insulin secretion. The concept of fatty acid impairment of glucose stimulated insulin secretion (lipotoxicity) has now been well accepted. Increased free fatty acid flux from adipose tissue to non-adipose tissue, resulting from abnormalities of fat metabolism, participates in and amplifies many of the metabolic derangements that are characteristic of insulin resistance syndrome and type 2 diabetes. Lipotoxicity is also likely to play an important role in the progression from normal glucose tolerance to fasting hyperglycemia and conversion to frank type 2 diabetes in insulin resistant individuals. This area of research is now focused on determining the mechanisms whereby FFAs impair b-cell function. There is some evidence to suggest that lipotoxicity could be mediated through induction of reactive oxygen species (ROS). N-acetylcysteine (NAC) is a known potent antioxidant and has been used experimentally in a number of medical conditions in humans for its protective antioxidant effects. The investigators now plan to administer NAC orally to humans for 48 hours to examine the effects of antioxidant therapy in ameliorating the deleterious effects of FFAs on pancreatic beta cell function. NAC is currently approved for the treatment of acetaminophen overdose and is also used as a mucolytic agent. The investigators are now using NAC as an antioxidant to determine whether it protects the pancreatic beta cell against the toxic effects of FFAs, as outlined in the detailed study protocol. This is a proof-of-principle study and is not designed to develop n-acetylcysteine for therapeutic use.
To examine the effect of three different blood pressure medications on the insulin sensitivity in overweight patients with high blood pressure.
The metabolic syndrome is associated with hyperdynamic circulation and sympathetic activation. Recently, Bakker et al. (Atherosclerosis 2002) described the hypothesis that free fatty acids are responsible for this association. The investigators hypothesize that in patients with obesity and the metabolic syndrome, an increased intracellular concentration of long-chain fatty acyl (LCFA)-CoA (the intracellular equivalent of free fatty acids) induces an increase in adenosine. Adenosine receptor stimulation, in turn, induces vasodilation and sympathetic activation. The investigators aimed to assess this effect of free fatty acids on the adenosine system in healthy volunteers.
The aim of this study is to explore the significance of the Lys:Arg ratio on responses of lipids and lipoprotein concentrations to dietary proteins and to evaluate the effects of dietary Lys:Arg on cardiovascular disease risk factors and endothelial function.
The current study is designed to assess the effect of a conventional cooking oil (hydrogenated oil) and a reformulated fat low in trans fatty acids on cardiovascular disease risk factors.
Metabolic syndrome is commonly defined as a set of risk factors and abnormalities that markedly increase the risk of cardiovascular events. Its relevance has been confirmed by a recent population-based survey of subjects aged 40-79 years indicating that the prevalence of metabolic syndrome in Italy is 34.1% if diagnosed using WHO criteria and 17.8% if diagnosed using the NCEP-ATPIII criteria. On the basis of the above considerations, the aim of this study is to promote the use of the SCORE algorithm for estimating cardiovascular risk, and to evaluate its evolution in patients with metabolic syndrome after the implementation of a multifactorial preventive strategy, with particular reference to the correction of lifestyle, hypertension and dyslipidemia.
The metabolic syndrome is a classification for patients with a constellation of risk factors which may include abdominal obesity, hypertension, elevated blood lipids and sugar. Three or more of these factors together constitute the metabolic syndrome and place these patients at a greater risk for the development of diabetes and cardiovascular diseases. The purpose of this study is to determine whether two common drugs to lower blood pressure, whether used separately or in combination, have different effects on blood sugar levels in patients diagnosed with the metabolic syndrome.
Thirty-six subjects with hyperlipidemia and metabolic syndrome and/or diabetes were randomized in a double-blind manner to either pravastatin 80 mg or atorvastatin 10 mg daily. Oxidative stress (dROMs assay that measures lipid hydroperoxides, plasma thiobarbituric acid reactive substances [TBARS], and aminothiol levels) and brachial artery flow-mediated dilation (FMD) were measured at baseline and after 12 weeks of statin therapy.
The purpose of this study is to determine whether MC-1 alone and in combination with an ACE inhibitor is effective in reducing blood pressure and metabolic dysfunctions associated with diabetes
Introduction Male ageing is associated with sarcopenia, frailty, osteopenia, obesity, the metabolic syndrome and cardiovascular disease. To what extent the androgens affect these signs of ageing is still largely undetermined. A few studies have shown divergent results concerning the relation between ageing and serum levels of testosterone. It still remains to be shown whether there is a pure age-related decline in serum testosterone or whether other factors such as obesity, chronic illness or medication are responsible for the lower serum testosterone found in elderly men when compared with young men. To investigate these issues a cohort of 600 men aged 60 to 75 years is examined. Objective The aim of the study is to investigate the relation of testosterone (T) to body composition (BC) and physical performance (PP). Measures for BC are muscle mass (MM), bone mineral density (BMD) and fat mass (FM). Parameters for PP are maximum voluntary force (MVF), maximum oxygen uptake (VO2max) and muscle power (P). We hypothesize that T is positively associated with MM, BMD and all PP parameters, but negatively associated with FM. We will furthermore examine whether life style, medication, chronic disease, hormones and binding proteins exert their actions on BC and PP solely through or independently of T. The levels of s-total and free T in this cohort will be compared with the s-total and free T levels from a cohort of young men aged 20 to 30 years. Furthermore the associations found between T and BC and PP in the two cohorts will be compared to investigate whether T plays the same role in the two groups.