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缓激肽后处理缺血再灌注损伤大鼠心肌磷酸化STAT3、梗死面积及细胞凋亡指数观察 被引量:1

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摘要 目的观察缓激肽后处理缺血再灌注损伤大鼠心肌磷酸化STAT3、梗死面积、细胞凋亡指数变化。方法将72只健康雄性Wistar大鼠随机分为4组各18只,假手术组只穿线,不结扎;缺血再灌注(I-R)组缺血30 min,再灌注120 min。缓激肽后处理(BK)组缺血30 min,再灌注120 min,并于再灌注前予缓激肽(200μg/kg)。BK+AG490组缺血30 min,再灌注120 min,再灌注前予缓激肽(200μg/kg),并于再灌注前5 min静注AG490(3 mg/kg)。再灌注10 min时各组取6只大鼠处死,制作心肌标本,Western blotting法检测心肌磷酸化STAT3(p-STAT3)。再灌注120 min时将剩余大鼠处死,制作心肌标本,TTC染色法检测心肌梗死面积,TUNEL法计算心肌细胞凋亡指数。结果 I-R组、BK组、BK+AG490组心肌p-STAT3相对表达量分别为0.28±0.04、0.56±0.08、0.27±0.05,心肌梗死面积分别为38.0%±3.0%、17.3%±2.8%、37.7%±3.8%,心肌细胞凋亡指数分别为72.0%±3.7%、40.7%±3.7%、71.7%±5.9%,BK组与I-R组、BK+AG490组比较,P均<0.01。结论缓激肽后处理的缺血再灌注损伤大鼠心肌磷酸化STAT3水平升高,心肌细胞凋亡指数降低,心肌梗死面积减少。
出处 《山东医药》 CAS 北大核心 2015年第3期29-30,共2页 Shandong Medical Journal
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参考文献9

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