报告题目：Nitric oxide and the blood vessel wall: from good to bad

报告时间：2017年10月25日（周三）14:20-15:20

报告地点：沈阳药科大学南校区.第四教学楼203

报告人：Paul Michel Georges Vanhoutte教授

（Li Ka Shing Faculty of Medicine）

主办单位：中药学院

研究生院（学科建设办公室）

辽宁省研究生现代药物领域创新与交流中心

辽宁省研究生传统药物领域创新与交流中心

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报告人简介：

Paul Michel Georges Vanhoutte，1973年获University of Antwerp博士学位。香港大学药理学带头人，现任中国协和医科大学、北京药物研究所、青岛海洋大学、第二军医大学和上海药物研究所等名誉教授。欧洲生物医学研究学会European Biomedical Research Association创始人，International Society on Endothelialization in Cardiovascular Surgery发起人。主要从事生物化学、药理学和临床医学研究，合著或编辑了36本书。出版了671篇原创研究论文，576篇社论、评论或章节。

报告人照片：

报告内容简介：

Nitric oxide and the blood vessel wall: from good to bad

The endothelium releases relaxing factors (EDRF), which diffuse to the underlying vascular smooth muscle cells and elicit endothelium-dependent vasodilatations. The best characterized EDRF is nitric oxide (NO) formed by endothelial NO synthase (eNOS). In the vascular smooth muscle cells, NO stimulates soluble guanylate cyclase which normally produces cyclic GMP. NO release by eNOS can be augmented by increases in shear stress or by activation of endothelial cell membrane receptors. The ability of the endothelial cell to release NO can be up-regulated by estrogens, repeated increases in blood flow, exercise, diet, and down-regulated by oxidative stress and increased presence of oxidized low density lipoproteins. The bioavailability of NO is curtailed by aging, smoking, environmental pollution or obesity and in hypertension and diabetes. In addition to lesser direct relaxation of the underlying vascular smooth muscle, a decreased release of NO also permits the production of vasoconstrictor prostanoids and/or endothelin-1. Blunted endothelium-dependent relaxations can also be due to unresponsiveness of the vascular smooth muscle to NO. Finally, in coronary arteries, hypoxia causes acute augmentations of vasoconstrictor responses that depend on the presence of NO and the biased activation of soluble guanylate cyclase which produces cyclic IMP rather than cyclic GMP. Since hypoxia is implicated inexaggerated vasoconstrictionsobserved in coronary artery disease, the emerging role of this non-canonical cyclic nucleotide may help identifying novel therapeutic targets.