项目名称: 远程非缺血性刺激诱导心脏保护的分子和神经机理
项目编号: No.81470425
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 医药、卫生
项目作者: 任晓平
作者单位: 哈尔滨医科大学
项目金额: 73万元
中文摘要: 在小鼠心肌缺血再罐注损伤(I/R)模型上我们发现了一种远程非缺血性心脏保护现象(RPCT),该现象通过远处伤害感受器刺激诱导心脏保护,减少心肌I/R损伤。我们前期研究支持该作用经由感觉神经,脊髓,交感神经节传导及背根反射机制激活心脏交感神经末梢,释放神经活性递质从而激活心肌保护信号系统的假说。但其详细机理迄今国内外尚无报道,为进一步验证此假说,我们将重点研究下列内容:1)确定是否刺激其他部位会引起心脏保护现象;2)确定RPCT诱导心脏保护的神经机制;3)确定RPCT诱导心脏保护的分子机制。本研究利用转基因小鼠,药理抑制剂和免疫组化等技术测试RPCT诱导的心肌特异性受体和信号因子,应用经皮电刺激、神经元追踪、神经离断等手段分析阐明神经机制,具有高度创新性和临床相关性。详细了解RPCT分子和神经机制,有助于获得新的重要分子及神经传导信号,制定有效的心肌保护策略,预防和治疗心肌缺血再灌损伤。
中文关键词: 心脏保护作用;非缺血预处理;神经机制;分子机制;背根反射
英文摘要: In vivo myocardial ischemia/reperfusion (I / R) mouse model, we found a new type of non-ischemic heart protection phenomenon (RPCT), the phenomenon is from remote nociceptors stimulation induced cardioprotection to reduce myocardial I / R injury. Our previous study supports the role of conduction through the sensory nerves, the spinal cord, sympathetic ganglia and dorsal root reflex mechanism, activation of cardiac sympathetic nerve endings, the release of the neural activity of neurotransmitters that activate myocardial protection signal system. To further confirm the mechanism, will study the following objectives:1)to determine whether stimulate other parts can cause cardioprotion.2)to determine the molecular mechanism RPCT trigger heart protection. 3)to determine RPCT triggered the neural mechanisms of cardioprotective.In this study, using transgenic mice, pharmacological inhibitors and immunohistochemical techniques to test RPCT induced cardiac-specific receptors and signaling factors. Application of transcutaneous electrical nerve stimulation, and tracking of neurons, nerve disarticulation to elucidate the neural mechanisms.In this study, highly innovative and clinical relevance. New molecular and nerve conduction signal learn more about RPCT molecular and neural mechanisms help to develop reasonable and effective myocardial protection strategy to reduce coronary heart disease caused by myocardial cell death.
英文关键词: heart protectioin;remote non-ischemic precondition;aneuronal basis;molecular basis;dorsal root reflex