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Compared with the lean (Fa/-) genotype, obese (fa/fa) Zucker rats have a relative deficiency of muscle phospholipid arachidonate, and skeletal muscle arachidonate in humans is positively correlated with insulin sensitivity. To assess the hypothesis that the positive effects of exercise training on
As 5-lipoxygenase (5-LO) is an emerging target in obesity and insulin resistance, we have investigated whether this arachidonate pathway is also implicated in the progression of obesity-related fatty liver disease. Our results show that 5-LO activity and 5-LO-derived product levels are significantly
Our aim was to examine the relationship between biliary deoxycholate and arachidonate in obese patients and the relationship of deoxycholate and arachidonate to the stimulation of biliary mucous glycoprotein among obese patients predisposed to cholesterol gallstones. Thirty-four obese patients
BACKGROUND
Severe obesity can result in proteinuria and progressive glomerulosclerosis in humans and experimental animals. The associated renal disease is ameliorated by weight reduction and/or blockade of the renin-angiotensin system. Various growth factors, cytokines, and lipid mediators are
To study the metabolism of the platelet 12-lipoxygenase pathway in diabetes, we evaluated the correlation between the activity and amount of arachidonate 12-lipoxygenase in the platelets of patients with non-insulin-dependent-diabetes mellitus (NIDDM). There were four parts in this investigation:
The arachidonate cascade includes the cyclooxygenase (COX) pathway to form prostanoids and the lipoxygenase (LOX) pathway to generate several oxygenated fatty acids, collectively called eicosanoids. Eicosanoids are suggested to play a dual role in regulating cell survival and apoptosis in various
OBJECTIVE
Among dieting obese patients, cholesterol gallstone formation is preceded by increases in levels of biliary cholesterol saturation, arachidonate, prostaglandin E2, total glycoproteins, and rapid nucleation of cholesterol. The aim of this study was to determine if similar increases occur
Arachidonic acid is an important regulator of cellular function via its effects on the physical properties of membranes, in its free form, or as a substrate for eicosanoids. Dietary studies indicate that its production is regulated, but the mechanisms of this regulation and factors influencing
Fourteen pairs of obese female monozygotic twins were recruited for a study of genetic influences on serum and adipose fatty acid (FA) composition. Following 1 wk of inpatient stabilization, fasting serum and adipose tissue obtained by surgical excision were analyzed by thin-layer and gas
Epidemiological studies have correlated diets containing higher intakes of PUFA with lower rates of chronic metabolic diseases. The molecular mechanisms regulated by the consumption of PUFA were examined by using an integrative metabolism approach assaying the liver transcriptome and
Below-normal proportions of phospholipid (PL) arachidonic acid (20:4 omega 6) have been reported in serum from obese humans and in liver from obese Zucker rats. This implies an abnormality of 20:4 omega 6 formation from linoleic acid (18:2 omega 6), possibly in the delta 6 desaturase step, or
Emerging evidence has consistently shown that a very low carbohydrate diet (VLCD) can protect against the development of obesity, but the underlying mechanisms are not fully understood. Here we applied a comprehensive metabonomics approach using ultraperformance liquid chromatography-quadrupole
OBJECTIVE
Inflammation in adipose tissue may link obesity to insulin resistance and atherosclerosis. Arachidonate 5-lipoxygenase activating protein (ALOX5AP) gene is involved in the pathogenesis of atherosclerotic cardiovascular disease (CVD). We investigated ALOX5AP expression in adipose tissue,