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lipoxygenase/obésité
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12-Lipoxygenase-knockout mice are resistant to inflammatory effects of obesity induced by Western diet.
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Inflammation is a key pathological process in the progression of atherosclerosis and type 2 diabetes. 12/15-lipoxygenase (12-LO), an enzyme involved in fatty acid metabolism, may contribute to inflammatory damage triggered by stressors such as obesity and insulin resistance. We hypothesized that
5-lipoxygenase activating protein signals adipose tissue inflammation and lipid dysfunction in experimental obesity.
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The presence of the so-called low-grade inflammatory state is recognized as a critical event in adipose tissue dysfunction, leading to altered secretion of adipokines and free fatty acids (FFAs), insulin resistance, and development of hepatic complications associated with obesity. This study was
Evidence for activation of inflammatory lipoxygenase pathways in visceral adipose tissue of obese Zucker rats.
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Central obesity is associated with low-grade inflammation that promotes type 2 diabetes and cardiovascular disease in obese individuals. The 12- and 5-lipoxygenase (12-LO and 5-LO) enzymes have been linked to inflammatory changes, leading to the development of atherosclerosis. 12-LO has also been
12-lipoxygenase promotes obesity-induced oxidative stress in pancreatic islets.
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High-fat diets lead to obesity, inflammation, and dysglycemia. 12-Lipoxygenase (12-LO) is activated by high-fat diets and catalyzes the oxygenation of cellular arachidonic acid to form proinflammatory intermediates. We hypothesized that 12-LO in the pancreatic islet is sufficient to cause
The 5-lipoxygenase/leukotriene pathway in obesity, insulin resistance, and fatty liver disease.
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OBJECTIVE
Obesity is a major risk factor for metabolic syndrome-related comorbidities such as insulin resistance, type-II diabetes, and nonalcoholic fatty liver disease (NAFLD). A wealth of evidence indicates that the associated pathologies of the metabolic syndrome are aggravated by the presence of
Augmented insulinotropic action of arachidonic acid through the lipoxygenase pathway in the obese Zucker rat.
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OBJECTIVE
The metabolism of arachidonic acid (AA) has been shown to be altered in severe insulin resistance that is present in obese (fa/fa) Zucker rats. We examined the effects and mechanism of action of AA on basal and glucose-stimulated insulin secretion in pancreatic islets isolated from obese
Regulatory effects of arachidonate 5-lipoxygenase on hepatic microsomal TG transfer protein activity and VLDL-triglyceride and apoB secretion in obese mice.
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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
Differential expression and localization of 12/15 lipoxygenases in adipose tissue in human obese subjects.
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Adipose tissue inflammation in obesity is a major factor leading to cardiovascular disease and type 2 diabetes.12/15 lipoxygenases (ALOX) play an important role in the generation of inflammatory mediators, insulin resistance and downstream immune activation in animal models of obesity. However, the
The effect of low-dose marine n-3 fatty acids on the biosynthesis of pro-inflammatory 5-lipoxygenase pathway metabolites in overweight subjects: a randomized controlled trial.
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BACKGROUND
Marine n-3 polyunsaturated fatty acids (PUFA) have a variety of anti-inflammatory properties. This study evaluated the effect of n-3 PUFA in a low, but recommended cardioprotective dosage on the formation of 5-lipoxygenase pathway metabolites in overweight subjects.
METHODS
Fifty subjects
Adipose tissue 12/15 lipoxygenase pathway in human obesity and diabetes.
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BACKGROUND
Visceral adipose tissue (VAT) is a key contributor to chronic inflammation in obesity. The 12/15-lipoxygenase pathway (ALOX) is present in adipose tissue (AT) and leads to inflammatory cascades that are causal for the onset of insulin resistance in rodent models of obesity.
OBJECTIVE
The
A role for 5-lipoxygenase products in obesity-associated inflammation and insulin resistance.
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There is a growing amount of evidence that obesity-induced low-grade inflammation is an important causative link between obesity and many of its associated pathologies such as type 2 diabetes and atherosclerosis. In the quest to identify the triggers of obesity-associated inflammation of adipose
Integrating genotypic and expression data in a segregating mouse population to identify 5-lipoxygenase as a susceptibility gene for obesity and bone traits.
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Forward genetic approaches to identify genes involved in complex traits such as common human diseases have met with limited success. Fine mapping of linkage regions and validation of positional candidates are time-consuming and not always successful. Here we detail a hybrid procedure to map loci
Increased PUFA Content and 5-Lipoxygenase Pathway Expression Are Associated with Subcutaneous Adipose Tissue Inflammation in Obese Women with Type 2 Diabetes.
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Obese women with type 2 diabetes mellitus (T2DM) have more inflammation in their subcutaneous white adipose tissue (sWAT) than age-and-BMI similar obese women with normal glucose tolerance (NGT). We aimed to investigate whether WAT fatty acids and/or oxylipins are associated with the enhanced
Arachidonate 5-lipoxygenase variants in atherosclerosis, obesity, and bone traits.
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Response to arachidonate 5-lipoxygenase variants in atherosclerosis, obesity, and bone traits.
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