线粒体分裂蛋白抑制剂在大鼠脑缺血再灌注损伤中的作用及其机制(英文)

被引:2
作者
张宁
王士雷
李淑虹
李瑜
王鹏
贾长新
机构
[1] 青岛大学医学院附属医院麻醉科
关键词
脑缺血/再灌注损伤; 细胞凋亡; 细胞色素C; 线粒体分裂;
D O I
10.13241/j.cnki.pmb.2013.18.053
中图分类号
R965 [实验药理学];
学科分类号
摘要
目的:观察线粒体分裂蛋白抑制剂在大鼠脑缺血再灌注损伤中的作用,并初步探讨其在线粒体凋亡途径中的作用机制。方法:雄性Wistar大鼠48只,体重250~300 g,随机分为三组(n=16):假手术组(Sham组)、脑缺血再灌注组(I/R组)和mdivi-1预处理组(mdivi-1组),线栓法建立大鼠大脑中动脉闭塞(MCAO)模型,缺血2小时,再灌注24小时后应用流式细胞术检测神经元凋亡;Western blot法检测Cyt C蛋白的表达;RT-PCR法检测Cyt C mRNA的表达。结果:与Sham组比较,I/R组神经细胞凋亡率与Cyt C蛋白以及mRNA表达水平显著升高(P<0.01)。应用mdivi-1预处理后细胞凋亡率与Cyt C蛋白以及mRNA表达水平明显降低(P<0.01)。结论:线粒体分裂蛋白抑制剂可以明显减轻脑缺血再灌注损伤,其作用机制可能通过阻断线粒体-细胞色素C途径来抑制细胞凋亡。
引用
收藏
页码:3410 / 3414
页数:5
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