心痛方对急性心肌梗死大鼠MMP-9 mRNA及TIMP-1 mRNA表达的影响
Journal of Emergency in Traditional Chinese Medicine(2017)
Abstract
目的 通过观察心痛方对大鼠急性心肌梗死(AMI)后基质金属蛋白酶-9(MMP-9)mRNA和金属蛋白酶组织抑制物-1(TIMP-1)mRNA表达及对心肌形态学的影响,探讨心痛方治疗AMI的疗效机制.方法 80只SD大鼠随机分为假手术组、模型组、心痛方组、双抗组(阿司匹林+氯吡格雷),冠脉结扎法制备AMI模型,灌胃给药7d后处死大鼠,运用RT-PCR法测定心肌组织MMP-9 mRNA、TIMP-1 mRNA表达,心肌细胞HE染色观察形态学改变.结果 心痛方能使AMI大鼠心肌内MMP-9 mRNA表达减少(P< 0.01);TIMP-1mRNA表达升高(P<0.01);MMP-9 mRNA/TIMP-1 mRNA比值降低(P<0.01);心肌损伤程度及心梗面积与MMP-9 mRNA/TIMP-1 mRNA比值呈正直线相关.结论 心痛方对AMI缺血心肌具有保护作用,其作用机制可能与增加TIMP-1 mRNA表达,降低MMP-9 mRNA表达,从而调节MMP-9 mRNA/TIMP-1 mRNA的平衡有关.
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Key words
Acute myocardial infarction,Xintong Decoction,MMP-9 mRNA,TIMP-1 mRNA
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