Sun Hai Mei . 缺血后处理对猪非梗死区心肌细胞凋亡的影响[J]. Journal of Kunming Medical University, 2012, 33(10).
Citation: Sun Hai Mei . 缺血后处理对猪非梗死区心肌细胞凋亡的影响[J]. Journal of Kunming Medical University, 2012, 33(10).

缺血后处理对猪非梗死区心肌细胞凋亡的影响

  • [摘要]目的 探讨缺血后处理对猪非梗死区心肌细胞凋亡的影响.方法 滇南小耳猪15只,随机分为3组.(1) 假手术组(S组,n=5),未行冠脉封堵及心肌缺血;(2)缺血再灌注组(I/R组,n=5),心肌缺血60 min后,不行缺血后处理,直接撤除球囊;(3) 缺血后处理组(Postcond组,n=5),心肌缺血60 min后,通过球囊充气和放气造成8次30 s/30 s短暂缺血再灌注.再灌注72 h采用2,3,5氯化三苯基氯四氮唑(TTC)染色确定心肌梗死面积;在猪非心肌梗死区,采用TUNEL法检测心肌凋亡细胞及免疫组化检测Bcl-2和Bax的蛋白表达.结果 再灌注72 h,缺血后处理组心肌梗死面积、非心肌梗死区细胞凋亡指数及Bax的蛋白表达和Bax/Bcl-2的比值明显低于再灌注组(P<0.05).结论 缺血后处理可能通过减轻非梗死区心肌细胞凋亡发挥心肌保护作用.

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