不同剂量卡维地洛对心衰大鼠心肌氧化应激和细胞凋亡的影响

被引:7
作者
吴强
李隆贵
蔡运昌
杨天和
王晓峰
耿召华
机构
[1] 贵州省人民医院心内科
[2] 第三军医大学新桥医院心内科
关键词
卡维地洛; 心力衰竭,充血性; 细胞凋亡; 氧化应激;
D O I
10.13191/j.chj.2003.05.28.wuq.009
中图分类号
R541.6 [血液循环衰竭];
学科分类号
摘要
目的 :探讨不同剂量卡维地洛 (CAR)对心肌梗死后大鼠心肌细胞凋亡的影响及 CAR治疗充血性心力衰竭(CHF)的作用机制。方法 :将雄性 Waistar大鼠前降支结扎 ,于术后 1周开始分别给予大剂量 CAR(HCAR组 ,6 0mg· kg- 1· d- 1 )和小剂量 CAR(L CAR组 ,6 m g· kg- 1· d- 1 )干预 7周 ,观察不同剂量 CAR对大鼠血流动力学参数、心肌细胞凋亡、心肌丙二醛 (MDA)含量和总抗氧化能力 (TAOC)的影响。结果 :CAR可改善心功能指标 ,降低心肌细胞凋亡指数及 MDA浓度 ,上调 TAOC水平 ,其中对心肌细胞凋亡指数 (HCAR组为 4 .6 %± 1.1% ,L CAR组为 8.0 %± 2 .0 % )、TAOC(HCAR组为 1.92± 0 .2 0 U· mg- 1 ,L CAR组为 1.5 9± 0 .12 U· mg- 1 )的影响以HCAR组明显。结论 :CAR可有效地减少心肌梗死后心肌细胞凋亡 ,防止 CHF的发生、发展 ,效果以大剂量明显 ,这可能与其维护心肌抗氧化防御系统有关
引用
收藏
页码:410 / 413
页数:4
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