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异氟醚后处理对大鼠肾缺血再灌注损伤的影响

, PP. 2709-2711

Keywords: 缺血再灌注损伤,,异氟醚,后处理

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Abstract:

目的探讨异氟醚后处理对大鼠肾脏缺血再灌注损伤(ischemia-reperfusioninjury,IRI)的影响。方法健康雄性Wistar大鼠36只,体质量300~350g,采用随机数字表法分为3组(n=12):假手术(S)组、肾脏缺血再灌注(IR)组和异氟醚后处理(ISO)组。采用夹闭双侧肾蒂60min、恢复灌注4h,建立大鼠肾脏缺血再灌注模型。ISO组于再灌注前开始吸入2.5%异氟醚持续5min。再灌注4h时处死大鼠,取肾组织,分别采用黄嘌呤氧化酶法、硫代巴比妥法测定超氧化物歧化酶(superoxidedismutase,SOD)活性、丙二醛(malondialdehyde,MDA)含量,光镜下观察病理学结果,采用免疫组化法测定肾组织CD44和肿瘤坏死因子(tumornecrosisfactor,TNF)的表达水平。结果免疫组化结果示:与S组比较,IR组肾组织MDA含量升高,SOD活性降低,CD44和TNF-α的表达上调(P<0.05);与S组比较,ISO组MDA含量升高、SOD活性降低、肾组织CD44和TNF-α的表达无显著差异(P>0.05);与I/R组比较,ISO组MDA含量降低、SOD活性升高、肾组织CD44和TNF-α的表达显著下调(P<0.05)。光镜结果示,S组大鼠组织结构基本正常,ISO组大鼠肾组织病理损伤明显轻于IR组。结论异氟醚后处理可以减轻大鼠肾脏IRI。

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