期刊
IUBMB LIFE
卷 65, 期 8, 页码 710-715出版社
WILEY
DOI: 10.1002/iub.1185
关键词
flavonoids; hypertension; nitric oxide; phytonutrients; cocoa; chocolate; endothelial dysfunction
资金
- Consejo Nacional de Investigaciones Cientificas y Tecnologicas (CONICET)
- Secretaria de Ciencia y Tecnica (Universidad de Buenos Aires) [UBACyT 20020090100111, 20020100100659]
- Consejo Nacional de Investigaciones Cientificas y Tecnologicas [CONICET PIP-11220110100612]
- Slovak Research and Development Agency [APVV-0523-10]
- Scientific Grant Agency of the Ministry of Education of the Slovak Republic
- Slovak Academy of Sciences [VEGA-2/0084/10]
Studies in humans have found consumption of certain flavanoid-containing foods to be associated with improvement in endothelial function and with reduction of blood pressure (BP). (-)-Epicatechin is a compound representative of the flavanols (a subfamily of flavonoids), abundant in cocoa seeds, which is preserved during the industrialization process to chocolate. P<0.05). Responses to acetylcholine (ACh) were then examined in femoral arteries in the absence and the presence of L-NAME, a nonselective NOS inhibitor, to assess the ACh-mediated relaxation ascribed to NO-dependent and -independent mechanisms. Acetylcholine-induced endothelium-dependent relaxation in the femoral artery was significantly higher in EPI-SHR than in SHR, with a predominance of the NO-dependent component of this relaxation. The endothelium-independent relaxation, assayed by using the NO donor sodium nitroprusside, resulted in nonsignificant difference in the three experimental groups, demonstrating an unaffected function of vascular smooth muscle cells. These results give further support to the concept that (-)-epicatechin can modulate BP in hypertension by increasing NO levels in the vasculature. (C) 2013 IUBMB Life, 65(8):710-715, 2013
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