肾素-血管紧张素系统对大鼠心肌缺血和缺血再灌注后左心室功能的影响

被引：5

作者：

彭晖

黄捷英

机构：

[1] 首都医科大学附属北京友谊医院心血管内科

来源：

中华老年多器官疾病杂志 | 2003年 / 01期

关键词：

心肌缺血; 心肌再灌注损伤; 肾素血管紧张素系统; 氯沙坦; 培哚普利;

D O I：

暂无

中图分类号：

R54 [心脏、血管（循环系）疾病];

学科分类号：

摘要：

目的　观察肾素血管紧张素系统 (RAS)对大鼠心肌缺血和缺血再灌注后左心室功能的影响 ,以及给予氯沙坦和培哚普利干预的结果。方法　结扎大鼠左冠状动脉前降支造成心肌梗死 ,30min后松解结扎线再灌注心肌 6 0min ,假手术组只穿线不结扎 ,大鼠随机分为假手术组、生理盐水对照组、氯沙坦组、培哚普利组。监测大鼠心肌缺血 30min和缺血再灌注 6 0min时血流动力学和左心室功能、循环RAS组分、肌酸激酶 (CK)和去甲肾上腺素(NE)等指标。结果　①与假手术组比较 ,对照组的左室舒张末压在冠脉结扎和再灌注后均升高 ,而血压、左室收缩压和±dp/dt则显著降低 ;与对照组比较 ,两个用药组大鼠的心功能明显改善 ;②对照组血浆NE、CK水平明显高于假手术组和用药组 ;③对照组血浆各RAS组分水平比假手术组明显升高 ;用药组则明显抑制RAS活性。结论　①大鼠心肌缺血和再灌注后发生左心室功能障碍 ;②心肌缺血和缺血再灌注损伤后循环RAS被激活 ;③氯沙坦和培哚普利可以保护心肌细胞 ,改善左心室功能障碍

引用

页码：44 / 48

页数：5

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