尿毒灵治疗慢性肾功能衰竭的药效学研究

An Experimental Study of Niaoduling Granule for Chronic Renal Failure

[目的]探讨尿毒灵(由黄芪、当归、陈皮、法夏、益母草、大黄、蚕砂等组成)对慢性肾功能衰竭(chronic、renalfailure,CRF)大鼠肾功能的影响及其与肾脏转化生长因子(TGF)β_1表达的关系。[方法]采用5/6肾大部切除法致CRF模型大鼠,将30只存活的CRF模型大鼠随机分为模型组、治疗组、对照组3组,另以8只假手术大鼠作假手术组,检测大鼠生化、代谢、病理,以免疫组化法检测TGFβ_1在肾脏的表达,以计算机图象分析法进行半定量比较。[结果]模型组见肾功能减退、电解质紊乱、血色素下降及CRF病理表现;两用药组可使肾衰改变减轻,但组间无显著性差异(P>0.05)。两用药组能显著调低CRF大鼠肾小球硬化指数(GSI)和 TGFβ_1的表达(与模型组比较,均P<0.01),但两治疗组组间比较无显著性差异。[结论]尿毒灵可明显改善CRF大鼠肾功能,同时有使TGFβ_1表达下调的作用,提示尿毒灵可能是通过这一下调作用而改善肾功能。

[Objective] To observe the effects of Niaoduling Granule (NG) on renal function in rats with chronic renal failure (CRF) and its relationship with renal transforming growth factor (TGF) β1. [Methods] CRF rat models were established by 5/6 subtotal nephrectomy and then the model rats were randomized into model group (Group B), NG group (Group C) and placebo control group (Group D) and other 8 rats served as mimic operation group (Group A) . Biochemical indexes, metabolic parameters and pathological features in kidney were examined and expression of renal transforming growth factor (TGF) β1 was determined by immunohistochemical assay. [Results] Renal hypofunction, disorder of electrolyte, decrease of hemoglobin and CRF features were found in Group B. After treatment, renal function was improved and glomerulus-sclerosis index (GSI) and expression of renal TGF β1 were decreased in Groups C and D (P < 0.01 as compared with those in Group B) . The differences between the two groups were not significant ( P < 0.05 ). [ Conclusion] NG can obviously improve the renal function of rats with CRF and its mechanism may be related to the down-regulation of expression of renal TGF β1 .