Effects of Chinese yellow wine on rat vascular endothelial cells and atherosclerosis induced by TNF -α / 预防医学

ABSTRACT

Objective To determine similarities in effect of yellow wine as compared statin and the possibility that yellow wine inhibits TNF -α-induced NO production,eNOS activity,expression of eNOS and iNOS protein in cultured rat VECs.Methods Isolation,cultivation,purification and identification of vascular endothelial cells of rat thoracic aorta in vitro were conducted.The passages 3 or 4 of VECs were used in all studies.Then we divided cells into 9 groups according to assays before:control,TNF -α,TNF -α+rosuvastatin (10 umol/L),TNF -α+ethanol 0.5%,TNF -α+yellow wine 0.5%,TNF -α+ethanol 1.0%,TNF -α+yellow wine 1.0%,TNF -α+ethanol 1.5%,and TNF -α+yellow wine 1.5% and the cells were given the corresponding treatment.NO production of culture supernatant was determined by nitrate reduction method and eNOS activity of cells was measured by chemical colorimetric method after the corresponding treatment for 24 h.The expression of eNOS and iNOS protein were detected by western blotting after the corresponding treatment for 48 h.Results Compared with the TNF -αgroup,NO production,eNOS activity,and eNOS protein expression in the rosuvastatin,and yellow wine 1.0%,and 1.5% groups were significantly increased and expression of iNOS protein were significantly decreased.Compared with the rosuvastatin group,eNOS protein expression in yellow wine 0.5% and yellow wine 0.5% groups significantly decreased.The expression of iNOS protein were significantly increased. Compared with ethanol groups,eNOS protein expression in yellow wine 0.5% and yellow wine 0.5% groups significantly increased and expression of iNOS protein were significantly decreased.Conclusion Treatment with yellow wine increased NO production,eNOS activity,and eNOS protein expression,which decreases iNOS protein expression.We conclude that yellow wine has similar beneficial effects as rosuvastatin on the cardiovascular system.These effects may be attributed to their anti -atherosclerotic actions.