氟伐他汀对心肌梗死大鼠心室重构及MMP-9、MMP-10表达的影响
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山东省自然科学基金( ZR2010HM116)


Effect of Fluvastatin on Ventricular Remodeling and Expression of MMP-9 and MMP-10 in Acute Myocardial Infarction Rats
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    摘要:

    目的 研究氟伐他汀对心肌梗死(AMI)大鼠基质金属蛋白酶(MMP-9、MMP-10)表达的影响,以探讨他汀类药物改善急性心肌梗死后心室重构的机制。方法 Wistar雄性大鼠随机分为假手术组、心肌梗死组、氟伐他汀组各12只,后两组均建立左冠状动脉前降支心肌梗死模型,氟伐他汀组于制模成功后予氟伐他汀灌胃6周,测左心室血流动力学参数、左心室重构指数及MMP-9、MMP-10表达的变化。结果 与假手术组比较,心肌梗死组和氟伐他汀组大鼠左心室收缩压、左心室压最大上升速率及左心室压最大下降速率均明显下降(P<0.05),且心肌梗死组较氟伐他汀组下降更明显(P<0.05)。与假手术组比较,心肌梗死组和氟伐他汀组左心室舒张期末内径(LVEDD)和左心室收缩期末内径(LVESD)均显著增加,左心室射血分数(LVEF)均显著降低(P<0.05),心脏组织MMP-9、MMP-10表达明显增强(P<0.01);与心肌梗死组相比,氟伐他汀组LVEDD、左心室质量指数(LVMI)均降低,心脏组织MMP-9、MMP-10表达明显降低(P<0.01),LVEF显著增加(P<0.05)。结论 氟伐他汀能逆转心室重构,其作用机制可能与抑制MMP-9、MMP-10的表达有关。

    Abstract:

    Aim To study the effect of fluvastatin on cardiac remodeling and cardiac function, and to investigate the effect of matrix metalloproteinase-9 (MMP-9) and MMP-10. Methods 36 Wistar rats were randomly divided into acute myocardial infarction (AMI) group,AMI+fluvastatin group and the sham-operated group. AMI was established by ligation of the anterior descending coronary artery in rats, fluvastatin was fed to AMI+ fluvastatin group by 20 mg/(kg·d) for 6 weeks. After 6 weeks treatment, then the hemodynamic parameters and mass index of left ventricular and the expression of MMP-9 and MMP-10 were detected. Results Compared with the sham-operated group, left ventricular systolic pressure(LVSP) and the maximal rate of rise and fall (±dp/dtmax) of left ventricular pressure in the AMI group and AMI+fluvastatin group were all decreased(P<0.05), moreover,these indexes decreased significantly in AMI group than those in AMI+fluvastatin group(P<0.05). Compared with the sham-operated group, left ventricular end-diastolic diameter (LVEDD), left ventricular end systolic diameter (LVESD), left ventricular mass index (LVMI), MMP-9, MMP-10 were significantly increased in the AMI group and AMI+fluvastatin group moreover,these indexes decreased in AMI+ fluvastatin group than those in AMI group(P< 0.05). Conclusion Fluvastatin could prevent the cardiac remodeling, the mechanisms may be by reducing the levels of MMP-9 and MMP-10.

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王士凯,褚亚丽,徐娟娟,梁江久.氟伐他汀对心肌梗死大鼠心室重构及MMP-9、MMP-10表达的影响[J].中国动脉硬化杂志,2014,22(9):917~920.

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  • 收稿日期:2013-09-13
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