【摘要】 为了检测缺血预适应后大鼠心肌基因表达谱的改变 ,采用cDNA芯片方法对缺血预适应后大鼠心肌基因谱的改变进行检测。结果发现 ,缺血预适应大鼠心肌中差异表达基因共 75项 ,其中表达上调基因 4 8项 ,表达下调基因 2 7项。采用逆转录—聚合酶链反应进一步验证了cDNA芯片结果的可靠性 ,并初步分析了基因表达谱改变在缺血预适应诱导的心肌内源性保护作用中有一定意义。以上研究有助于从基因水平阐明缺血预适应诱导的心肌保护的分子机制 ,为临床防治缺血 再灌注损伤及缺血性心脏疾病提供新的思路。更多还原

【Abstract】 Aim To test the changes of gene expression profiles after myocardical ischemic preconditioning in rats. Methods The changes of gene expression profiles of 4 096 genes in rat hearts were observed using cDNA chip and the significance of the changes in gene expression was analyzed. Results The expression of 48 genes was up regulated and 27 genes was down regulated after ischemic preconditioning. The changes in gene expression were further confirmed by RT PCR. The significance of the changes of gene expression profiles in the myocardial protection induced by ischemic preconditioning was analyzed. Conclusions Ischemic preconditioning resulted in the changes of myocardical gene expression profiles. The results were helpful to elucidate the molecular mechanism of myocardial protection induced by ischemic preconditioning and provided new clues for prevention and treatment of myocardial ischemia reperfusion injury and ischemic heart diseases.更多还原