摘要
目的研究肾复康Ⅱ号对5/6肾切除模型大鼠肾功能及TGF-β1/Smads蛋白信号通路的影响。方法30只SD大鼠按随机数字表法分为假手术组、模型组、肾复康组。采用5/6肾切除法制备大鼠模型。造模后第9周开始给药,肾复康组灌胃肾复康Ⅱ号颗粒混悬液450 mg/(kg·d),假手术组和模型组灌胃等体积生理盐水,1次/d,连续灌胃21 d。检测各组大鼠肾功能指标BUN、SCr和尿酸水平;采用免疫组化法检测肾组织中TGF-β1、转化生长因子β受体Ⅰ(transforming Growth Factor β Receptor 1, TGFβR1)、Smad7、pSmad2、pSmad3表达。采用Western Blot法检测肾组织Smad7、pSmad2、pSmad3蛋白表达。结果与模型组比较,肾复康组大鼠BUN[(15.03±2.19)mmol/L比(24.30±2.82)mmol/L]、SCr[(74.22±7.36)μmol/L比(93.61±14.73)μmol/L]水平降低(P<0.05);肾组织Smad7阳性表达增高;TGF-β1、TGFβR1、pSmad2、pSmad3阳性表达降低(P<0.05);肾组织pSmad2蛋白[(0.47±0.03)比(0.64±0.04)]、pSmad3[(0.43±0.04)比(0.55±0.02)]表达降低(P<0.05),Smad7[(0.54±0.03)比(0.39±0.02)]表达升高(P<0.05)。结论肾复康Ⅱ号可改善5/6肾切除模型大鼠肾功能,其作用机制可能与调控TGF-β1/Smads信号通路表达有关。
Objective To study the effect of Shenfukang Ⅱ on kidney function and TGF-β1/Smads signal pathway with 5/6 nephrectomy model in rats. Methods Thirty SD rats were randomly divided into the sham operation group, model group and Shenfukang group according to a random number table. We used 5/6 nephrectomy to prepare animal models. The rats were given Shenfukang Ⅱ particles 450 mg/(kg?d) gavage, the others group were given equal volume of saline gavage, once a day, continuous 21 days. The rats were given gavage at the 9 th week after operation. The changes of renal function index BUN, SCR and UA of rats in each group were detected 21 days after administration. The expression of TGF-β1, TGFβR1, Smad7, pSmad2, pSmad3 in renal tissues were detected by immunohistochemistry. The Smad7, pSmad2 and pSmad3 detected the expression of in renal tissues by Western Blot. Results Compared with the model group, the content of BUN (15.03 ± 2.19 mmol/L vs. 24.30 ± 2.82 mmol/L), SCR (74.22 ± 7.36 μmol/L vs. 93.61 ± 14.73 μmol/L) in Shenfukang group significantly decreased (P<0.05). The expression of TGF-β1, TGFβR1, pSmad2 and pSmad3 significantly decreased in kidney tissue, while the expression of Smad7 significantly increased in kidney tissue. The expression of p-smad2 (0.47 ± 0.03 vs. 0.64 ± 0.04) and p-smad3 (0.43 ± 0.04 vs. 0.55 ± 0.02) significantly decreased (P<0.05), and the expression of Smad7 (0.54 ± 0.03 vs. 0.39 ± 0.02) significantly increased (P<0.05). Conclusions Shenfukang Ⅱ have improved on kidney function with 5/6 nephrectomy model rats. The study revealed that Shenfukang II may play an anti-fibrotic effect on regulating TGF-β1/Smads signaling pathway with 5/6 nephrectomies model.
作者
程小红
毛加荣
赵亚峰
张宇
赵凯
张晓凤
Cheng Xiaohong;Mao Jiarong;Zhao Yafeng;Zhang Yu;Zhao Kai;Zhang Xiaofeng(Department of Nephrology, Shaanxi Provincial Hospital of Traditional Chinese Medicine, Xi'an 710004, China)
出处
《国际中医中药杂志》
2018年第12期1165-1169,共5页
International Journal of Traditional Chinese Medicine
