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狼疮性肾炎肾小球中nestin和活化型Caspase 3的表达及意义 被引量:10

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摘要 目的探讨狼疮鼠肾小球中nestin和足细胞中活化型Caspase 3的表达变化及其与小鼠蛋白尿的关系。方法选取30周龄雌性MRL/MPJ小鼠和MRL/faslpr小鼠为研究对象,分别设为对照组和狼疮性肾炎模型组。血、尿生化检测小鼠肾功能改变;采用免疫组化和Western blot技术检测小鼠肾小球中活化型Caspase 3蛋白的表达;免疫组化法检测小鼠肾小球中nestin蛋白的表达;免疫荧光双染技术检测肾小球中活化型Caspase 3与nestin共表达。结果 (1)与正常对照组相比,狼疮组小鼠24 h尿蛋白(Upro)明显升高(P<0.05),而尿素氮(BUN)和血清肌酐(Scr)在两组之间差异无显著性。(2)透射电镜结构显示,狼疮性肾炎模型组小鼠肾小球上皮细胞出现足突融合,基膜出现明显的不规则增厚。(3)与正常对照组相比,活化型Caspase 3在狼疮性肾炎模型组小鼠肾小球中表达增高;(4)免疫组化结果显示,nestin阳性信号主要定位于细胞质和细胞核,定量分析结果显示,与正常对照组相比,狼疮性肾炎模型组肾小球中nestin蛋白表达上调。(5)免疫荧光双染检测结果显示,正常对照组中仅见nestin蛋白表达,未见明显的nestin和Caspase 3共定位表达,在狼疮性肾炎模型组小鼠肾小球中出现了nestin蛋白和Caspase 3蛋白明显共定位。(6)相关性分析:狼疮性肾炎模型组小鼠肾小球中活化型Caspase 3蛋白的表达量与24 h Upro呈明显正相关(r=0.827,P=0.006)。结论足细胞骨架结构的改变和(或)足细胞凋亡可能在狼疮性肾炎发病过程中发挥重要的作用。
出处 《临床与实验病理学杂志》 CAS CSCD 北大核心 2016年第2期203-206,共4页 Chinese Journal of Clinical and Experimental Pathology
基金 河北省教育厅自然科学研究计划项目(ZH2012002) 2012年度教育部新世纪优秀人才支持计划项目(0300690202)
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二级参考文献42

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