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缬沙坦通过上调肾皮质Megalin的表达减少自发性高血压大鼠肾小管性蛋白尿 被引量:1

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摘要 目的:研究缬沙坦是否可通过上调近端肾小管多配体的胞吞受体Megalin的表达,从而减少自发性高血压大鼠(SHR)肾小管性蛋白尿。方法:选取14周龄雄性SHR72只,随机分为3组,每组24只,分组:缬沙坦组(50 mg·kg-1·d-1,SHR-V);氨氯地平组(10 mg·kg-1·d-1,SHR-A);空白对照组(SHR)。灌胃法给药7周,用药前后均测定血压。7周后处死大鼠,取出肾组织,免疫印迹法(WB)测定各组大鼠肾皮质中Megalin的表达含量。结果:SHR-V与SHR-A组降低系统性高血压的程度相当。SHR-V组降低白蛋白尿作用明显优于SHR-A组(P=0.01)。SHR-V与SHR-A、SHR组比较,可以显著减少肾小管性蛋白尿,这与SHR-V组Megalin表达上调相关(135±28%)。结论:血管紧张素Ⅱ受体拮抗剂缬沙坦具有非血压依赖的肾脏保护作用,与肾皮质Megalin表达上调密切相关。此外,肾小管衰竭是高血压患者发生蛋白尿的重要机制之一。
出处 《中国中西医结合肾病杂志》 2016年第8期710-712,共3页 Chinese Journal of Integrated Traditional and Western Nephrology
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