Hausenloy Derek J, Yellon Derek M
The Hatter Cardiovascular Institute, University College London Hospital and Medical School, 67 Chenies Mews, London, WC1E 6HX, United Kingdom.
Pharmacol Ther. 2007 Nov;116(2):173-91. doi: 10.1016/j.pharmthera.2007.06.005. Epub 2007 Jun 30.
Despite current optimal treatment, the morbidity and mortality of coronary heart disease (CHD), the leading cause of death worldwide, remains significant, paving the way for the development of novel cardioprotective therapies. Two potential strategies for protecting the heart are ischemic preconditioning (IPC) and ischemic postconditioning (IPost), which describe the cardioprotection obtained from applying transient episodes of myocardial ischemia and reperfusion either before or after the index ischemic event, respectively. Much progress has been made in elucidating the signal transduction pathway, which underlies their protection. Intriguingly, it is the first few minutes of myocardial reperfusion following the index ischemic period, which appear crucial to both IPC- and IPost-induced protection. Emerging evidence suggests that they appear to recruit a similar signaling pathway at time of myocardial reperfusion, comprising cell-surface receptors, a diverse array of protein kinase cascades including the reperfusion injury salvage kinase (RISK) pathway, redox signaling, and the mitochondrial permeability transition pore (mPTP). The common signaling pathway that appears to unite these 2 cardioprotective strategies at the time of reperfusion is the subject of this review. Importantly, this common cardioprotective pathway can be activated at the time of myocardial reperfusion in the clinical setting using pharmacological agents to target the essential signaling components, which should lead to the development of novel treatment strategies for improving the clinical outcomes of patients with CHD.
尽管目前有最佳治疗方法,但作为全球主要死因的冠心病(CHD)的发病率和死亡率仍然很高,这为新型心脏保护疗法的开发铺平了道路。两种潜在的心脏保护策略是缺血预处理(IPC)和缺血后处理(IPost),它们分别描述了在指数缺血事件之前或之后通过短暂的心肌缺血和再灌注发作所获得的心脏保护作用。在阐明其保护作用的信号转导途径方面已经取得了很大进展。有趣的是,指数缺血期后的心肌再灌注的最初几分钟,对IPC和IPost诱导的保护作用似乎都至关重要。新出现的证据表明,它们在心肌再灌注时似乎募集了相似的信号通路,包括细胞表面受体、多种蛋白激酶级联反应,包括再灌注损伤挽救激酶(RISK)通路、氧化还原信号传导和线粒体通透性转换孔(mPTP)。本文综述的主题是在再灌注时似乎将这两种心脏保护策略结合在一起的共同信号通路。重要的是,在临床环境中,通过使用药物靶向关键信号成分,可以在心肌再灌注时激活这种共同的心脏保护通路,这应该会导致开发新的治疗策略以改善冠心病患者的临床结局。