益气活血散结法对糖尿病肾病大鼠肾组织中MCP-1、TGF-β的影响
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国家自然科学基金项目(编号:81473664)


Effects of Qi-tonifying Blood-activating and Mass-dissipating Method on Expressions of MCP-1 And TGF-β in Renal Tissue of Rats with Diabetic Nephropathy
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    摘要:

    目的:通过动物实验,基于免疫炎性反应因子MCP-1、TGF-β,探索益气活血散结法改善肾小球硬化的分子机制。方法:24只GK大鼠,随机分为模型组、假手术组、益气活血散结组。通过高脂高能量喂养加单肾切除术复制糖尿病肾病模型。检测各组大鼠的24 h尿蛋白,观察大鼠在干预后肾脏组织的病理改变,同时采用Western blotting以及免疫组化法检测肾脏组织的MCP-1和TGF-β的表达情况,采用RT-PCR法检测MCP-1mRNA以及TGF-βmRNA的表达水平。结果:PASM染色和Masson染色显示:益气活血散结组阳性率明显低于模型组(P<0.01)。益气活血散结组中24 h尿蛋白在药物干预后明显减少(P<0.01)。Western blotting、免疫组化结果均显示:益气活血散结组MCP-1(P<0.05)、TGF-β(P<0.01)的表达程度明显低于模型组。同样,RT-PCR结果也显示:MCP-1mRNA(P<0.01)、TGF-βmRNA(P<0.05)水平在益气活血散结组明显低于模型组。结论:益气活血散结法可以有效地减少24 h尿蛋白定量、延缓肾小球纤维化,其机制可能与抑制肾脏组织中MCP-1和TGF-β的表达有关。

    Abstract:

    To study the mechanism of Qi-tonifying blood-activating and mass-dissipating method in treating diabetic nephropathy based on MCP-1 and TGF-β through animal experiment.Methods:A total of 24 GK rats were randomly divided into model group,sham-operated group and Qi-tonifying blood-activating and mass-dissipating group.Each group had 8 rats.The DN model was established by feeding with high-fat diet and unilateral nephrectomy.24-hour urine protein was detected and the renal pathological changes were observed.Expressions of MCP-1 and TGF-β in the renal tissue were detected by Western blotting and immunohistochemistry,while RT-PCR was used to detect the expression of MCP-1mRNA and TGF-β mRNA.Results:Results of PASM staining and Masson staining show that the positive rate of Qi-tonifying blood-activating and mass-dissipating group was significantly lower than that of model group(P<0.01).The 24-hour urinary protein in Qi-tonifying blood-activating and mass-dissipating group decreased significantly after drug intervention(P<0.01).Results of Western blotting and immunohistochemistry showed that expression levels of MCP-1(P<0.05) and TGF-β(P<0.01) were lower in Qi-tonifying blood-activating and mass-dissipating group than those in model group.Results of RT-qPCR showed that expression levels of MCP-1 mRNA(P<0.01) and TGF-β mRNA(P<0.05) in Qi-tonifying blood-activating and mass-dissipating group were significantly lower than those in model group.Conclusion:The treatment of diabetic nephropathy with Qi-tonifying blood-activating and mass-dissipating method can decrease the proteinuria and delay the glomerular fibrosis.The molecular mechanism may be related to the inhibition of MCP-1 and TGF-β.

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黄为钧,王世东,赵进喜,傅强,宫晴,张华,吴文静,申子龙,贾旭,张雨婷.益气活血散结法对糖尿病肾病大鼠肾组织中MCP-1、TGF-β的影响[J].世界中医药,2017,(01).

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  • 收稿日期:2016-12-20
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  • 在线发布日期: 2017-03-16
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