氟伐他汀对正常血脂兔心肌缺血再灌注损伤的保护作用
DOI:
作者:
作者单位:

作者简介:

通讯作者:

基金项目:


Protective Effect of Fluvastatin on Myocardial Ischemia Reperfusion Injury
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    目的 观察氟伐他汀对正常血脂兔的心肌缺血再灌注损伤有无保护作用及其可能原因。方法 将2 4只标准饲养的日本大耳白兔随机分为假手术组、缺血再灌注组和氟伐他汀组,氟伐他汀组在行缺血再灌注术前给予氟伐他汀10mg/ (kg·d)干预一周。建立心肌缺血再灌注模型,监测血流动力学变化;检测乳酸脱氢酶和肌酸激酶活性;以Evans蓝和TTC双重染色方法测量心肌梗死面积。取局部梗死区及对应部位心肌检测诱导型一氧化氮合酶活性的表达。结果 与缺血再灌注组比较,氟伐他汀组心肌梗死面积、乳酸脱氢酶1及肌酸激酶活性均显著减小(P<0 .0 5及P<0 .0 1) ;缺血即刻始氟伐他汀组各时间点较缺血再灌注组左心室舒张末压减小(P<0 .0 5 ) ,左心室内压变化最大速率(±dp/dtmax)增大(P<0 .0 5 ) ;缺血再灌注组及氟伐他汀组总一氧化氮合酶活性均显著高于假手术组(P<0 .0 5 ) ,缺血再灌注组诱导型一氧化氮合酶活性与总一氧化氮合酶活性比值显著大于假手术组和氟伐他汀组(P<0 .0 1)。结论 氟伐他汀可以保护正常血脂兔的心肌缺血再灌注损伤,其机制可能部分与调节一氧化氮合酶活性的表达有关。

    Abstract:

    Aim To investigate the protective effect of fluvastatin on ischemia reperfusion myocardium in normocholesterolemic rabbit. Methods 24 rabbits were divided into three groups randomly and myocardial ischemia reperfusion model in rabbit was made. Rabbits were subjected to 45 min of regional myocardial ischemia and 3 h of reperfusion. 10 mg/(kg·d) fluvastatin were oral administered for one week. Dynamic index of myocardial function was recorded and analyzed. Serum activity of creatine kinase (CK) and lactate dehydrogenase (LDH) were detected. Infarcted sizes in heart were determined by dual staining with Evans-blue and TTC. The activity of induced nitric oxide sythase (iNOS) and total nitric oxide synthase (tNOS) were detected in ischemic myocardium. Results In comparison with control group, all indexes related to injury, namely left ventricular end-diastolic volume (LVEDP), ±dp/dt max, MB isoenzyme of creatine kinase (CK-MB), LDH-1 and the ratio of myocardial necrosis area, show injury attenuation in fluvastatin group. Increase of activity ratio iNOS/tNOS due to ischemia reperfusion is reduced significantly in fluvastatin group compared with control group (0.25±0.10 vs 0.61±0.13, p<0.01). Conclusion Fluvastatin can attenuate myocardial ischemia reperfusion injury in rabbit. Its protective effect may be assoctiated not only with up-regulation of tNOS but also with modulation of iNOS in myocardium.

    参考文献
    相似文献
    引证文献
引用本文

戴淑华,蒋学俊,李建军.氟伐他汀对正常血脂兔心肌缺血再灌注损伤的保护作用[J].中国动脉硬化杂志,2005,13(2):183~185.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2004-06-01
  • 最后修改日期:2004-01-12
  • 录用日期:
  • 在线发布日期: