共 6 条
异丙基肾上腺素充血性心力衰竭大鼠模型心肌细胞凋亡的改变
被引:6
作者:

蔡辉
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机构: 南京军区南京总医院

郭寒
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机构: 南京军区南京总医院

赵智明
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机构: 南京军区南京总医院

董晓蕾
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h-index: 0
机构: 南京军区南京总医院

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机构:
[1] 南京军区南京总医院
来源:
关键词:
异丙肾上腺素;
SD大鼠;
心力衰竭;
肌细胞,心脏;
细胞凋亡;
D O I:
暂无
中图分类号:
R541.61 [];
学科分类号:
摘要:
目的建立异丙基肾上腺素诱导SD大鼠充血性心力衰竭模型,观察大鼠心肌细胞凋亡的变化。方法实验选用雄性SD大鼠60只,随机分为对照组10只、心衰组50只;用ISO(170mg/kg)对雄性SD大鼠皮下注射2次,6周后应用超声心动图检测,以左心室射血分数(LVEF)≤45%确定造模成功,18周使用左心导管进行血流动力学检查,取心脏观察左心室重量指数等病理形态学特征。并利用琼脂糖凝胶电泳法检测DNA断片化,和免疫印迹分析法检测Bcl-2,Bax,caspase-9和caspase-3的表达。结果与对照组相比,模型组HR、LVEDP、LVWI显著升高(P<0.01),LVSP明显降低(P<0.01)和左心室压力上升/下降最大数率(±dp/dtmax)明显降低(P<0.01),左心室重量指数明显增加(P<0.01),心肌DNA断片比例升高,Bax、caspase-9和caspase-3表达升高,而Bcl-2表达下降。结论异丙基肾上腺素可诱导大鼠心衰模型,该作用可能与心肌细胞凋亡增加有关。
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页码:259 / 261
页数:3
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