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高糖诱导大鼠系膜细胞CTGFmRNA的表达及机制探讨 被引量:5

Expression of connective tissue growth factor mRNA and its mechanism in the high glucose induced rat mesangial cells
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摘要 目的:观察高糖状态对肾小球系膜细胞中p38丝裂原活化蛋白激酶(p38MAPK)及其下游因子cAMP反应元件结合蛋白1(CREB1)的表达以及对系膜细胞结缔组织生长因子(CTGF)和细胞外基质蛋白表达的影响。方法:体外培养大鼠肾小球系膜细胞,分别给予高糖和p38MAPK抑制剂SB203580干预,采用Western印迹检测p38MAPK和CREB1及其磷酸化蛋白(p-p38MAPK、p-CREB1)的表达,半定量RT-PCR检测CTGF和纤维黏连蛋白(FN)mRNA的表达。放免法测定细胞上清液中层黏连接蛋白(LN)和IV型胶原的分泌含量。结果:与低糖组和低糖加甘露醇组相比,高糖组系膜细胞p-p38MAPK、p-CREB1表达明显上调,CTGF和FN mRNA的表达增加,细胞上清液中FN和IV型胶原含量增加。SB203580能够明显抑制高糖培养系膜细胞p38MAPK和CREB1的磷酸化,下调CTGF和FN mRNA表达,抑制细胞上清LN和Ⅳ型胶原的分泌。结论:p38MAPK信号途径可能参与高糖诱导的肾小球系膜细胞CTGF的表达和细胞外基质的分泌。
出处 《中国病理生理杂志》 CAS CSCD 北大核心 2009年第8期1644-1646,共3页 Chinese Journal of Pathophysiology
基金 河北省科技攻关计划课题资助项目(No.072761188)
关键词 高糖 系膜细胞 结缔组织生长因子 信号转导 Concentration of high glucose Mesangial cells Connective tissue growth factor Signal transduction
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二级参考文献36

共引文献32

同被引文献20

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