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JOURNAL ARTICLE
REVIEW
Polyphenols in preventing endothelial dysfunction.
Postȩpy Higieny i Medycyny Doświadczalnej 2017 March 28
One of the main causes of mortality in developed countries is atherosclerosis. The pathogenesis of atherosclerosis is associated with endothelial dysfunction. Consumption of food rich in natural antioxidants including polyphenols significantly improves endothelial cells functions. Polyphenols have a beneficial effect on the human body and play an important part in protecting the cardiovascular system. Polyphenols present in food have antioxidant, anti-inflammatory, antihypertensive, antithrombotic and antiproliferative properties. Catechins cause an increase in the activity of endothelial nitric oxide synthase (eNOS) and increased production of nitric oxide (NO) and decrease in blood pressure. Catechins also reduce platelet adhesion, lower the concentration of C-reactive protein and tumor necrosis factor alpha and interleukin-6. Resveratrol inhibits NADPH oxidase expression, increases the expression of eNOS and NO production as well as decreases the expression of proinflammatory cytokines, and also lowers the concentration of the soluble forms of adhesion molecules - sICAM-1 and sVCAM-1 in blood. Quercetin reduces the blood level of low density lipoprotein cholesterol, lowers blood pressure, reduces the concentration of C-reactive protein and F2-isoprostane level. Curcumin has antagonistic activity to homocysteine. Curcumin increases the expression of eNOS and reduces oxidative DNA damage in rat cardiomyocytes. Numerous attempts are taken for improving the bioavailability of polyphenols in order to increase their use in the body.
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