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- 저자 : Ken-Ichi Kosuna (검색결과 1 건)
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Robert M. Hackman,John A. Polagruto,Heidrun B. Gross,Faranak Kamangar,Ken-Ichi Kosuna,Buxiang Sun,Hajime Fujii,Carl L. Keen 한국식품영양과학회 2007 Journal of medicinal food Vol.10 No.4
Epidemiological studies suggest that a high dietary intake of flavanols, a subclass of flavonoids, is associatedwith reduced risk of vascular disease. Clinical studies have also shown that the consumption of certain flavanol-rich foods(e.g., cocoa, tea, red wine), as well as intake of the individual flavanol (-)-epicatechin, can result in improvement in a num-ber of parameters associated with vascular disease, including improved endothelial function, reduced platelet reactivity, andreduced oxidative stress. The present study assessed the effects of a flavanol-rich supplement on platelet reactivity and plasmaoxidant defense in a group of smokers, a population at an elevated risk for vascular disease. Male smokers were randomlyassigned to a placebo (n . 10) or a flavanol-rich grapeseed extract (FRGSE; n . 13) group, and after an overnight fast, bloodsamples were collected before and at 1, 2, and 6 hours following consumption of the placebo or supplement. The FRGSE sup-plement, but not the placebo, significantly decreased ADP-stimulated platelet reactivity at 1, 2, and 6 hours following intake(P. .05) compared to baseline levels. Similarly, the supplement, but not the placebo, decreased epinephrine-stimulated plateletreactivity 2 hours following consumption. Plasma antioxidant capacity (total radical trapping antioxidant potential), lipid ox-idation (plasma thiobarbituric acid-reactive substances), and serum uric acid concentrations were not affected in either group.Thus smokers may obtain some health benefits from the consumption of certain flavanol-rich foods, beverages, and supple-ments.
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