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二甲双胍对心力衰竭大鼠心功能的影响及其机制 被引量:3

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摘要 目的探讨二甲双胍对心力衰竭大鼠心功能的影响及其可能的作用机制。方法选择成年Wistar大鼠67只,采取结扎冠状动脉前降支的方法建立心力衰竭模型,随机分为二甲双胍治疗组19只、AMPK激动剂(AIC-AR)治疗组20只、生理盐水对照组13只,同时设假手术组15只,分别给予相应的处理。4周后,观察各组左室射血分数(LVEF)、血流动力学指标、血浆BNP水平,并留取心肌组织检测p-AMPKαThr-172蛋白表达。结果与生理盐水对照组比较,二甲双胍治疗组、AICAR治疗组LVEF、左室收缩压和左室压力最大上升和下降速率均显著提高(P均<0.05),左室舒张末压显著降低(P均<0.05)。所有心力衰竭大鼠用药前血浆BNP水平高于假手术组(P均<0.05);药物干预4周后,二甲双胍治疗组、AICAR治疗组血浆BNP水平较生理盐水对照组明显降低(P均<0.05)。免疫组化显示,二甲双胍治疗组、AICAR治疗组P-AMPKαThr-172蛋白表达明显升高(P均<0.05)。结论二甲双胍可明显改善心力衰竭大鼠的心功能状态,这种作用与激活AMPK信号转导通路有关。
出处 《山东医药》 CAS 2012年第9期34-36,共3页 Shandong Medical Journal
基金 河南省医学科技攻关计划项目(201003021)
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