Corruption of coronary collateral growth in metabolic syndrome: Role of oxidative stress  

作　　者：Yuh Fen Pung William M Chilian 

机构地区：[1]Department of Integrative Medical Sciences,Northeastern Ohio Universities College of Medicine and Pharmacy

出　　处：《World Journal of Cardiology》2010年第12期421-427,共7页世界心脏病学杂志（英文版）（电子版）

基　　金：Supported by National Institute of Health Grants No.HL32788, R01 83366,RC1HL100828(to Chilian WM);an American Heart Association Post-doctoral Fellowship,No.09POST2290021 (to Pung YF)

摘　　要：The myocardium adapts to ischemic insults in a variety of ways.One adaptation is the phenomenon of acute preconditioning,which can greatly ameliorate ischemic damage.However,this effect wanes within a few hours and does not confer chronic protection.A more chronic adaptation is the so-called second window of preconditioning,which enables protection for a few days.The most potent adaptation invoked by the myocardium to minimize the effects of ischemia is the growth of blood vessels in the heart,angiogenesis and arteriogenesis (collateral growth),which prevent the development of ischemia by enabling flow to a jeopardized region of the heart.This brief review examines the mechanisms underlying angiogenesis and arteriogenesis in the heart.The concept of a redox window,which is an optimal redox state for vascular growth,is discussed along with signaling mechanisms invoked by reactive oxygen species that are stimulated during ischemia-reperfusion.Finally,the review discusses of some of the pathologies,especially the metabolic syndrome,that negatively affect collateral growth through the corruption of redox signaling processes.The myocardium adapts to ischemic insults in a variety of ways. One adaptation is the phenomenon of acute preconditioning, which can greatly ameliorate ischemic damage. However, this effect wanes within a few hours and does not confer chronic protection. A more chronic adaptation is the so-called second window of preconditioning, which enables protection for a few days. The most potent adaptation invoked by the myocardium to minimize the effects of ischemia is the growth of blood vessels in the heart, angiogenesis and arteriogenesis (collateral growth), which prevent the development of ischemia by enabling flow to a jeopardized region of the heart. This brief review examines the mechanisms underlying angiogenesis and arteriogenesis in the heart. The concept of a redox window, which is an optimal redox state for vascular growth, is discussed along with signaling mechanisms invoked by reactive oxygen species that are stimulated during ischemia-reperfusion. Finally, the review discusses of some of the pathologies, especially the metabolic syndrome, that negatively affect collateral growth through the corruption of redox signaling processes.

关 键 词：Angiogenesis ARTERIOGENESIS Redox-dependent signaling MITOCHONDRIA 

分 类 号：R541.4[医药卫生—心血管疾病] R589[医药卫生—内科学]