实脾固肾化瘀方对阿霉素肾纤维化大鼠肾组织I型胶原蛋白、转化生长因子β1、层黏连蛋白及α平滑肌肌动蛋白表达的影响

摘要

Objective To investigate the effects ofShipi-Gushen-Huayu Recipe on the expressions of collagen I, laminin(LN), transforming growth factor-β1(TGF-β1)andα-smooth muscle actin(α-SMA)in adriamycin-induced renal fibrosis in rats.Methods A total of male SD rats were randomly divided into four groups, with 10 rats in each group: a normal group, a model group, a treatment group and a fosinopril sodium group. Except the rats in the normal group, the rest rats were subjected to renal fibrosisvia tail intravenous injection of adriamycin(4 mg/kg). Two weeks after modeling, the rats in the rreatment group and in the fosinopril sodium group were intragastrically administrated daily withShipi-Gushen-Huayu Recipe extract(43 g/kg)and fosinopril solution(2 mg/kg), respectively,both in the normal group and model group with saline. After 30 days, 24-hours urine protein were determined, and the expressions of collagen I, LN, TGF-β1 andα-SMA in kidney tissue were detected with immunohistochemistry staining.Results The expressions of collagen I(24.64±0.67vs. 32.86±0.88), LN(18.71±0.72vs. 28.35±0.87), TGF-β1(14.71±0.68vs. 18.35±0.96)andα-SMA(17.64±0.74vs. 25.86±0.85)in the treatment group were significantly lower than those in the model group(allP<0.01). The expressions of collagen I, LN, TGF-β1 andα-SMA in the fosinopril sodium group were 27.33±0.73, 20.44±0.81, 15.44±0.85 and 19.33±0.77, respectively. There was no statistically significant difference between the expressions of collagen I, LN, TGF-β1 andα-SMA in the treatment group and in the fosinopril sodium group.ConclusionShipi-Gushen-Huayu Recipe can significantly down regulate the expressions of collagen I, LN, TGF-β1 andα-SMA in adriamycin-induced renal fibrosis in rats.%目的：观察实脾固肾化瘀方对阿霉素诱导肾纤维化大鼠I型胶原蛋白、转化生长因子β1（TGF-β1）、层黏连蛋白（LN）及α-平滑肌肌动蛋白（α-SMA）表达的影响。方法40只雄性SD大鼠随机分为正常对照组、模型组、治疗组、福辛普利组，每组10只。除正常对照组外，其余大鼠均采用尾静脉注射阿霉素（4 mg/kg）制作肾纤维化模型。造模后2周，治疗组和福辛普利钠组分别灌胃给予实脾固肾化瘀方浸膏（43 g/kg）和福辛普利钠溶液（2 mg/kg），正常对照组和模型组灌胃给予等体积生理盐水，均为1次/d。给药30 d后，检测尿蛋白，并采用免疫组织化学法检测肾组织I型胶原蛋白、层黏连蛋白（LN）、转化生长因子β1（TGF-β1）及α平滑肌肌动蛋白（α-SMA）表达变化。结果治疗组肾组织 I 型胶原蛋白、LN、TGF-β1及α-SMA 表达[分别为（24.64±0.67）、（18.71±0.72）、（14.71±0.68）、（17.64±0.74）]较模型组[分别为（32.86±0.88）、（28.35±0.87）、（18.35±0.96）、（25.86±0.85）]下降（P＜0.01），与福辛普利钠组[分别为（27.33±0.73）、（20.44±0.81）、（15.44±0.85）、（19.33±0.77）]比较差异无统计学意义（P＞0.05）。HE染色结果显示，治疗组大鼠肾小球系膜细胞及基底膜增生程度均较模型组明显改善。结论实脾固肾化瘀方可下调阿霉素诱导肾纤维化大鼠I型胶原蛋白、LN、TGF-β1和α-SMA表达。