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普萘洛尔对大鼠动脉粥样硬化斑块内基质金属蛋白酶-9(MMP-9)及金属蛋白酶组织抑制剂-1(TIMP-1)表达的影响

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摘要 目的研究普萘洛尔对大鼠动脉粥样硬化斑块内基质金属蛋白酶-9(MMP-9)及金属蛋白酶组织抑制剂-1(TIMP-1)表达的影响,探讨β-受体阻滞剂稳定动脉粥样硬化斑块的机制。方法 30只Wistar大鼠经高脂、高维生素D、免疫损伤处理17w造成动脉粥样硬化模型后,随机分为对照组和普萘洛尔组,每组15只。所有大鼠在继续高脂喂养基础上,普萘洛组予普萘洛尔5mg·kg-1·d-1灌胃;对照组予生理盐水1ml/d灌胃。分组处理1w后处死全部大鼠,取主动脉粥样斑块用免疫组织化学方法检测动脉粥样硬化斑块内CD68巨噬细胞浸润、MMP-9及TIMP-1表达。结果普萘洛尔组巨噬细胞浸润数目及MMP-9的表达较对照组明显减少(P<0.01),TIMP1表达明显增高(P<0.05)。结论普萘洛尔可减少大鼠动脉粥样硬化斑块处巨噬细胞浸润及MMP-9的表达,增高斑块处TIMP-1表达,具有稳定动脉粥样硬化斑块的作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2010年第13期1862-1864,共3页 Chinese Journal of Gerontology
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