吉林大学学报(医学版) ›› 2023, Vol. 49 ›› Issue (5): 1168-1173.doi: 10.13481/j.1671-587X.20230509

• 基础研究 • 上一篇    

人参皂苷Rh2对糖尿病肾病变大鼠肾损伤的保护作用及其机制

曲萌1,姜雨竹1,黄睿2,马振卓3,夏吉辰2,张媛2,董志恒2()   

  1. 1.北华大学基础医学院生物化学与分子生物学教研室,吉林 吉林 132013
    2.北华大学基础医学院 病理学教研室,吉林 吉林 132013
    3.吉林省吉林市人民医院影像中心,吉林 吉林 132012
  • 收稿日期:2022-12-18 出版日期:2023-09-28 发布日期:2023-10-26
  • 通讯作者: 董志恒 E-mail:2754855687@ qq.com
  • 作者简介:曲 萌(1971-),女,吉林省吉林市人,副教授,医学博士,主要从事糖尿病慢性并发症方面的研究。
  • 基金资助:
    吉林省科技厅科技发展计划项目(YDZJ202301ZYTS106);吉林省卫健委卫生健康科技能力提升项目(2021JC083);国家级大学生创新训练项目(202110201028);吉林省省级大学生创新训练项目(202210201150)

Protective effect of ginsenoside Rh2 on kidney injury in rats with diabetic kidney lesions and its mechanism

Meng QYU1,Yuzhu JIANG1,Rui HUANG2,Zhenzhuo MA3,Jichen XIA2,Yuan ZHANG2,Zhiheng DONG2()   

  1. 1.Department of Biochemistry and Molecular Biology,School of Basic Medicine,Beihua University,Jilin 132013,China
    2.Department of Pathology,School of Basic Medicine,Beihua University,Jilin 132013,China
    3.Department of Image Center,People’s Hospital,Jilin City,Jilin Province,Jilin 132012,China
  • Received:2022-12-18 Online:2023-09-28 Published:2023-10-26
  • Contact: Zhiheng DONG E-mail:2754855687@ qq.com

摘要:

目的 探讨人参皂苷Rh2对糖尿病肾病变(DKL)大鼠肾脏损伤的保护作用,并阐明其作用机制。 方法 通过高脂高能量饲料配以链脲佐菌素(STZ)腹腔注射方法制备DKL大鼠模型。将30只SD成模大鼠随机分为模型组、低剂量(10 mg·kg-1)Rh2组和高剂量(20 mg·kg-1)Rh2组,每组10只,另选取10只SD大鼠作为正常对照组。检测各组大鼠体质量和肾脏质量,并计算肾指数,干预8周后全自动分析仪检测各组大鼠血清肌酐(Scr)、尿素氮(BUN)和24 h尿蛋白(UP)水平,酶联免疫吸附测定(ELISA)法检测各组大鼠肾组织中Ⅳ型胶原(Col Ⅳ)水平,Western blotting法检测各组大鼠肾组织中转化生长因子β1(TGF-β1)、Smad3和Smad7蛋白表达水平。 结果 与正常对照组比较,模型组大鼠体质量降低(P<0.01),肾脏质量和肾指数明显升高(P<0.01),血清中Scr、BUN和24 h UP水平均升高(P<0.01),肾组织中Col Ⅳ水平升高(P<0.01),肾组织中TGF-β1和Smad3蛋白表达水平升高(P<0.01),而肾组织中Smad7蛋白表达水平降低(P<0.01)。与模型组比较,低和高剂量Rh2组大鼠体质量升高(P<0.05或P<0.01),肾脏质量和肾指数均降低(P<0.05或P<0.01),血清中Scr、BUN和24 h UP水平均明显降低(P<0.05或P<0.01),肾组织中Col Ⅳ水平降低(P<0.01),肾组织中TGF-β1和Smad3蛋白表达水平降低(P<0.01),肾组织中Smad7蛋白表达水平升高(P<0.01)。 结论 人参皂苷Rh2可抑制DKL大鼠肾脏纤维化,改善肾功能,对DKL大鼠肾脏有保护作用,其机制可能与Rh2调节TGF-β1/Smads信号通路表达有关。

关键词: 人参皂苷Rh2, 糖尿病肾病变, 肾损伤, 转化生长因子β1, Smad蛋白

Abstract:

Objective To discuss the protective effect of ginsenoside Rh2 on kidney injury in the rats with diabetic kidney lesions (DKL),and to clarify its mechanism. Methods The DKL rat model was established by using the high-fat and high-energy diet combined with intraperitoneal injection of streptozotocin(STZ).Thirty SD model rats were randomly divided into model group, low dose (10 mg·kg-1) of Rh2 group and high dose (20 mg·kg-1) of Rh2 group, and there were 10 rats in each group;other ten SD rats were regared as normal control group.The body weights and kidney weights of the rats in various groups were detected,and the kidney index was caculated;after intervented for 8 weeks, automatic analyzer was used to detect the levels of serum creatinine (Scr), urea nitrogen (BUN) and 24 h urinary protein (UP)in serum of the rats in various groups;enzyme linked immunosorbent assay (ELISA) method was used to detect the levels of collagen type Ⅳ(Col Ⅳ) in kidney tissue of the rats in various groups; Western blotting method was used to detect the expression levels of transforming growth factor-β1 (TGF-β1),Smad3 and Smad7 proteins in kidney tissue of the rats in various groups. Results Compared with normal control group, the body weight of the rats in model group was decreased(P<0.01),the kidney weight and kidney index were significantly increased (P<0.01), the levels of Scr, BUN and 24 h UP in serum were increased (P<0.01), the level of Col Ⅳ in kidney tissue was increased(P<0.01), the expression levels of TGF-β1 and Smad3 proteins in kidney tissue were increased(P<0.01), and the expression level of Smad7 protein in renal tissue was decreased (P<0.01). Compared with model group,the body weight of the rats in low and high doses of Rh2 groups were inecreased (P<0.05 or P<0.01), the kidney weight and kidney index were decreased (P<0.05 or P<0.01),the levels of Scr, BUN and 24 h UP in serum were significantly decreased (P<0.05 or P<0.01), the level of Col Ⅳ in kidney tissue was decreased(P<0.01), the expression levels of TGF-β1 and Smad3 proteins in kidney tissue were decreased(P<0.01), and the expression level of Smad7 protein in kidney tissue was increased (P<0.01). Conclusion Ginsenoside Rh2 can inhibit the kidney fibrosis and improves the kidney function in the DKL rats, and has a protective effect on the kidney of DKL rats; its mechanism may be related to regulating the expression of TGF-β1/Smads signaling pathway.

Key words: Ginsenoside Rh2, Diabetic kidney lesions, Kidney injury, Transforming growth factor-β1, Smad protein

中图分类号: 

  • R285.5