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Effects of Tongxinluo on expressions of connective tissue growth factor (CTGF) and bone morphogenetic protein-7 (BMP-7) in diabetic nephropathy rats
Author(s): 
Pages: 7-11
Year: Issue:  3
Journal: Acta Academiae Medicinae Shandong

Keyword:  TongxinluoDiabetic nephropathyAdvanced glycation end productsConnective tissue growth factorBone morphogenetic protein-7RatsWistar;
Abstract: 目的研究通心络对糖尿病肾病大鼠肾脏组织结缔组织生长因子(CTGF)及骨形态蛋白7(BMP-7)表达的影响,并探讨其对糖尿病大鼠肾脏保护作用及机制。方法采用链脲佐菌素(STZ)诱导建立糖尿病大鼠模型,造模成功后随机分为糖尿病组(DM组),通心络治疗组(TXL组),正常大鼠为对照组(C组),于24周末检测各组大鼠、24h尿微量蛋白、空腹血糖(FPG)、血清糖基化血红蛋白I(HbA1c)、晚期糖基化终末产物(AGEs)、尿素氮(BUN)、肌酐(Cr)、肾质量/体质量(KW/BW),光镜PAS染色,采用RT-PCR及Westernblot测定CTGF、BMP-7mRNA及蛋白的表达水平。结果与C组比较,DM组大鼠24周后KW/BW、尿微量蛋白、血清AGEs、BUN、Cr、HbA1c均显著性升高(P<0.05);TXL组较DM组KW/BW、尿微量蛋白显著降低(P<0.05);肾脏组织学观察显示,DM组肾小球基底膜增厚,系膜区细胞外基质(ECM)沉积增多,肾小管上皮细胞水肿现象明显,经通心络治疗后,肾脏病理改变显著减轻。另外,DM组大鼠肾组织BMP-7基因和蛋白表达下降,而CTGF基因和蛋白表达升高;与DM组比较TXL组能够抑制CTGF表达,使BMP-7表达升高。结论通心络可以减轻糖尿病大鼠尿微量蛋白、改善肾脏组织病理,对DN大鼠肾脏具有保护作用,其机制可能与抑制CTGF,上调BMP-7表达有关。
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