Epigallocatechin gallate induces expression of heme oxygenase-1 in endothelial cells via p38 MAPK and Nrf-2 that suppresses proinflammatory actions of TNF-α
作者: Philomena PullikotilHui ChenRanganath MuniyappaCynthia C. GreenbergShutong YangChad E.N. ReiterJi-Won LeeJay H. ChungMichael J. Quon
作者单位: 1Diabetes Unit, National Center for Complementary and Alternative Medicine, Bethesda, MD 20892, USA
2Laboratory of Obesity and Aging Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
刊名: The Journal of Nutritional Biochemistry, 2012, Vol.23 (9), pp.1134-1145
来源数据库: Elsevier Journal
DOI: 10.1016/j.jnutbio.2011.06.007
关键词: Epigallocatechin gallate (EGCG)Heme oxygenase-1p38 kinaseNuclear factor-E2-related factor-2Endothelium
原始语种摘要: Abstract(#br)Epigallocatechin gallate (EGCG), the major polyphenol in green tea, acutely stimulates production of nitric oxide (NO) from vascular endothelium to reduce hypertension and improve endothelial dysfunction in spontaneously hypertensive rats. Herein, we explored additional mechanisms whereby EGCG may mediate beneficial cardiovascular actions. When compared with vehicle-treated controls, EGCG treatment (2.5 μM, 8 h) of human aortic endothelial cells (HAEC) caused a ∼three-fold increase in heme oxygenase-1 (HO-1) mRNA and protein with comparable increases in HO-1 activity. This was unaffected by pretreatment of cells with wortmannin, LY294002, PD98059 or L-NAME (PI 3-kinase, MEK and NO synthase inhibitors, respectively). Pretreatment of HAEC with SB203580 (p38 MAPK inhibitor) or...
全文获取路径: Elsevier  (合作)
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影响因子:4.552 (2012)

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