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Página 1 a partir de 590 resultados
Genetic polymorphisms of tumor necrosis factor-alpha modify the association between dietary polyunsaturated fatty acids and plasma high-density lipoprotein-cholesterol concentrations in a population of young adults.
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OBJECTIVE
Genetic polymorphisms in tumor necrosis factor-alpha (TNF-alpha) modify the association between polyunsaturated fatty acids (PUFA) and plasma high-density lipoprotein (HDL) cholesterol in a population with type 2 diabetes. The objective of this study was to determine whether this gene x
Genetic polymorphisms of tumor necrosis factor-alpha modify the association between dietary polyunsaturated fatty acids and fasting HDL-cholesterol and apo A-I concentrations.
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BACKGROUND
Heterogeneity in circulating lipid concentrations in response to dietary polyunsaturated fatty acids (PUFAs) may be due, in part, to genetic variations. Tumor necrosis factor-alpha (TNF-alpha) is a proinflammatory cytokine that can induce hyperlipidemia and is known to be modulated by
Complex modulation of cytokine induction by endotoxin and tumour necrosis factor from peritoneal macrophages of rats by diets containing fats of different saturated, monounsaturated and polyunsaturated fatty acid composition.
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1. Responses to cytokines and other inflammatory stimuli have been shown to be enhanced by fats rich in n-6 polyunsaturated fatty acids and suppressed by fats rich in n-3 polyunsaturated fatty acids and oleic acid or poor in n-6 polyunsaturated fatty acids. 2. Corn oil is rich and coconut oil, olive
Neutrophil oxygen radical generation. Synergistic responses to tumor necrosis factor and mono/polyunsaturated fatty acids.
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In inflammatory reactions there are complex interactions of protein mediators (cytokines) and mediators derived from lipids. An important event in inflammation is superoxide production, in relation to microbicidal activity as well as tissue damage. We have studied interactions of lipid mediators
Kinetics of tumour necrosis factor and prostaglandin production by murine resident peritoneal macrophages as affected by dietary n-3 polyunsaturated fatty acids.
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Cell-associated and secreted tumour necrosis factor (TNF), prostaglandin (PG) E2, and 6-keto PGF1 alpha were monitored at various times following in vitro stimulation of resident peritoneal macrophages with lipopolysaccharide (LPS). Macrophages were obtained from mice maintained on diets containing
Novel action of n-3 polyunsaturated fatty acids: inhibition of arachidonic acid-induced increase in tumor necrosis factor receptor expression on neutrophils and a role for proteases.
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OBJECTIVE
Neutrophils and tumor necrosis factor (TNF) play important roles in the pathogenesis of rheumatoid arthritis (RA). Modulation of TNF receptors (TNFRs) may contribute to the regulation of tissue damage, and n-6 polyunsaturated fatty acids (PUFAs) such as arachidonic acid (AA) can increase
Interleukin-1 and tumor necrosis factor synthesis by mouse peritoneal macrophages is enhanced by dietary n-3 polyunsaturated fatty acids.
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The peritoneal macrophages from mice maintained for 16 days on a diet containing (10%) menhaden oil contained less arachidonic acid and more n-3 polyunsaturated fatty acids (n-3 PUFA) than those maintained on diets containing an equivalent amount of corn oil. Following stimulation with
Polyunsaturated fatty acids augment tumoricidal action of 5-fluorouracil on gastric cancer cells by their action on vascular endothelial growth factor, tumor necrosis factor-α and lipid metabolism related factors.
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BACKGROUND
Gastric cancer is the second most common cause of cancer-related mortality worldwide. 5-fluorouracil (5-FU) is a commonly used anti-cancer drug. Various polyunsaturated fatty acids (PUFAs) are known to have tumoricidal action both in vitro and in vivo. Though PUFAs are known to augment
Tumor necrosis factor production by murine resident peritoneal macrophages is enhanced by dietary n-3 polyunsaturated fatty acids.
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Tumor necrosis factor (TNF) is a macrophage derived peptide that has an antitumor action and modulates immune and inflammatory reactions. Dietary fatty acids may modulate TNF production as dietary n-3 polyunsaturated fatty acids suppress human monocyte TNF production, but enhance its secretion by
Increasing the dietary (n-3) to (n-6) polyunsaturated fatty acid ratio increases tumor necrosis factor production by murine resident peritoneal macrophages without an effect on elicited peritoneal macrophages.
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Tumor necrosis factor (TNF), prostaglandin (PG) E2 and 6-keto-PGF1 alpha production by murine peritoneal macrophages was monitored following in vitro stimulation with lipopolysaccharide. Macrophages were obtained from mice fed diets containing increasing ratios of (n-3) to (n-6) fatty acids by
Effect of marine-derived n-3 polyunsaturated fatty acids on C-reactive protein, interleukin 6 and tumor necrosis factor α: a meta-analysis.
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BACKGROUND
Previous studies did not draw a consistent conclusion about the effects of marine-derived n-3 polyunsaturated fatty acids (PUFAs) on fasting blood level of C-reactive protein (CRP), interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α).
RESULTS
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Polyunsaturated fatty acids stimulate superoxide formation in tumor cells: a mechanism for specific cytotoxicity and a model for tumor necrosis factor?
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Some neoplastic cell lines are readily killed when incubated in the presence of polyunsaturated fatty acids (PUFA). In an attempt to elucidate this phenomenon, we studied PUFA-driven superoxide (O2-) production by cultured NS-1 cells (murine lymphoid tumor cells). We find: (1) Even in the absence of
[The influence of polyunsaturated fat acids on the development of artificially caused exudative skin necrosis in rats].
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Development of exudative skin necrosis in female rats of Vistar line was caused by Selye method (with help of subcutaneons injections of sodium chlorate). The number of rats which got skin necrosis was bigger than when animals were fed on food containing butter or sardine fat, at that in the second
The effect of dietary supplementation with n-3 polyunsaturated fatty acids on the synthesis of interleukin-1 and tumor necrosis factor by mononuclear cells.
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We examined whether the synthesis of interleukin-1 or tumor necrosis factor, two cytokines with potent inflammatory activities, is influenced by dietary supplementation with n-3 fatty acids. Nine healthy volunteers added 18 g of fish-oil concentrate per day to their normal Western diet for six
n-3 polyunsaturated fatty acids, interleukin-1, and tumor necrosis factor.
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