磷酸肌酸对心肌细胞线粒体的保护作用

被引:52
作者
刘瑛琪
李天德
任艺虹
李宁
机构
[1] 解放军医院心内科
[2] 解放军总医院心内科
[3] 解放军总医院仪器中心 北京
[4] 北京
关键词
线粒体膜电位; 磷酸肌酸; 细胞凋亡;
D O I
10.13191/j.chj.2004.01.17.liuyq.004
中图分类号
R541.6 [血液循环衰竭];
学科分类号
1002 ; 100201 ;
摘要
目的 :研究能量治疗对心力衰竭的治疗机制。观察磷酸肌酸 (phosphocreatine,CP)对心肌细胞线粒体膜电位的保护作用。方法 :采用胶原酶分离成年大鼠心肌细胞 ,0 .2 mmol/ L H2 O2 刺激细胞 ,于刺激前 10 min加入 10mm ol/ L CP,利用荧光探针 JC-1结合流式细胞仪检测线粒体膜电位的变化 ;Annexin-V/ PI及 TUNEL 染色法鉴定心肌细胞的凋亡。结果 :H2 O2 导致线粒体膜电位下降 ,细胞凋亡增加。CP有效地减低了线粒体膜电位的下降 ,减少了细胞凋亡。结论 :CP能够抗心肌细胞氧化损伤 ,其机制可能依赖于减少或抑制线粒体膜电位的下降 ,保护了线粒体的正常功能
引用
收藏
页码:14 / 16
页数:3
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