中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (14): 2145-2151.doi: 10.12307/2024.322

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

有氧运动干预2型糖尿病大鼠肾功能的变化

吴玉珍1,孙  青2,刘  霞1,周  雨1,金其贯2   

  1. 1湖南师范大学体育学院体适能与运动康复湖南省重点实验室,湖南省长沙市  410012;2扬州大学体育学院,江苏省扬州市  225127
  • 收稿日期:2023-02-11 接受日期:2023-05-05 出版日期:2024-05-18 发布日期:2023-07-28
  • 通讯作者: 刘霞,教授,硕士生导师,湖南师范大学体育学院体适能与运动康复湖南省重点实验室,湖南省长沙市 410012
  • 作者简介:吴玉珍,女,2000年生,山东省菏泽市人,湖南师范大学体育学院在读硕士,主要从事运动对慢病的干预研究。 孙青,女,扬州大学体育学院,硕士,主要从事运动对慢病的干预研究。
  • 基金资助:
    湖南省大学生创新训练计划项目(S202210542163),项目负责人:周雨;长沙市自然科学基金项目(kq2208166),项目负责人:刘霞;国家社会科学基金项目(22BTY103),项目负责人:刘霞

Variation in renal function of type 2 diabetic rats undergoing aerobic exercise

Wu Yuzhen1, Sun Qing2, Liu Xia1, Zhou Yu1, Jin Qiguan2   

  1. 1Hunan Provincial Key Laboratory of Physical Fitness and Sports Rehabilitation, Physical Education College of Hunan Normal University, Changsha 410012, Hunan Province, China; 2Physical Education College of Yangzhou University, Yangzhou 225127, Jiangsu Province, China
  • Received:2023-02-11 Accepted:2023-05-05 Online:2024-05-18 Published:2023-07-28
  • Contact: Liu Xia, Professor, Master’s supervisor, Hunan Provincial Key Laboratory of Physical Fitness and Sports Rehabilitation, Physical Education College of Hunan Normal University, Changsha 410012, Hunan Province, China
  • About author:Wu Yuzhen, Master candidate, Hunan Provincial Key Laboratory of Physical Fitness and Sports Rehabilitation, Physical Education College of Hunan Normal University, Changsha 410012, Hunan Province, China Sun Qing, Master, Physical Education College of Yangzhou University, Yangzhou 225127, Jiangsu Province, China
  • Supported by:
    Hunan Provincial University Student Innovation Training Program Project, No. S202210542163 (to ZY); Natural Science Foundation of Changsha, No. kq2208166 (to LX); National Social Science Foundation of China, No. 22BTY103 (to LX)

摘要:


文题释义:

2型糖尿病:约占糖尿病的90%以上,是一种常见的代谢性疾病,胰岛素抵抗是其主要特征,也是其病情进展的重要机制。2型糖尿病常并发肾功能损伤,在糖尿病大鼠中,可见尿微量白蛋白、血清尿素氮、血清肌酐等常用肾功能评价指标的显著升高。
Notch1:是Notch信号通路的一个受体,在肾小球中具有主要的破坏性作用,与肾小球硬化程度、肾小管间质纤维化程度相关,在糖尿病肾病中表达上调。转化生长因子β1(TGF-β1)可与Notch1紧密联系,在肾脏病变中共同发挥作用。Notch1是TGF-β1的一个效应靶点,TGF-β1可通过上调Notch1参与组织纤维化。


背景:2型糖尿病常伴随肾功能障碍,现已有大量研究表明运动能够缓解糖尿病患者代谢紊乱及肾功能损伤。但是关于运动对2型糖尿病患者肾脏保护作用的具体机制,鲜有人报道。

目的:探讨有氧运动是否通过抑制转化生长因子β1/Notch1通路改善2型糖尿病大鼠肾功能。
方法:将雄性SD大鼠随机分为正常对照组和糖尿病模型组,造模成功后再随机分为糖尿病对照组和糖尿病运动组,糖尿病运动组进行8周有氧运动干预。运动结束后取材,采用全自动生化分析仪和ELISA法检测糖脂代谢、肾功能相关指标;通过电镜观察肾皮质细微结构改变;采用ELISA和RT-PCR技术检测大鼠肾脏组织中相关蛋白和基因表达量。

结果与结论:①相较于正常对照组,糖尿病对照组大鼠空腹血糖、总胆固醇、三酰甘油水平及胰岛素抵抗指数显著增加(P < 0.05);有氧运动能够显著降低空腹血糖、三酰甘油水平(P < 0.05);②相较于正常对照组,糖尿病对照组大鼠尿微量白蛋白、血清尿素氮和血清肌酐水平极显著增加(P < 0.01),肾脏基底膜增厚,系膜基质增生,伴一定程度的足突融合,肾脏病变明显;有氧运动能够极显著下调2型糖尿病大鼠尿微量白蛋白、血清尿素氮和血清肌酐的过表达(P < 0.01),明显改善糖尿病大鼠肾脏的病理改变;③相较于正常对照组,糖尿病对照组大鼠肾组织转化生长因子β1、Notch1、Jagged1、Hes1蛋白和基因表达量均极显著增加(P < 0.01);有氧运动对转化生长因子β1、Notch1及Jagged1蛋白和基因的过表达有极显著的抑制作用(P < 0.01),同时也可以显著性地抑制Hes1蛋白的过表达(P < 0.05);④综上可知,有氧运动可以保护糖尿病大鼠肾功能,延缓肾的病理进展,这可能是通过抑制转化生长因子β1/Notch1信号通路的过度表达来实现的。

https://orcid.org/0009-0007-0716-3004(吴玉珍)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 有氧运动, 2型糖尿病大鼠, 肾脏, 转化生长因子β1, Notch1

Abstract: BACKGROUND: Type 2 diabetes is often accompanied by renal dysfunction. Increasing studies have shown that exercise can alleviate metabolic disorders and renal dysfunction in diabetic patients. However, the specific mechanism underlying the renal protective effect of exercise in patients with type 2 diabetes is rarely reported.
OBJECTIVE: To investigate whether aerobic exercise can improve renal function in type 2 diabetic rats by inhibiting transforming growth factor β1/Notch1 pathway.
METHODS: Male Sprague-Dawley rats were randomly divided into normal control group and diabetes model group. After successful modeling, they were randomly divided into diabetes control group and diabetes exercise group. Rats in the diabetes exercise group were subjected to an 8-week aerobic exercise. Samples were collected after exercise, and the relevant indexes of glucose and lipid metabolism and renal function were detected by automatic biochemical analyzer and ELISA. The microscopic structure of renal cortex was observed by electron microscope. ELISA and RT-PCR were used to detect the expression of related proteins and genes in rat kidney tissue.
RESULTS AND CONCLUSION: Compared with the normal control group, fasting blood glucose, total cholesterol, and triglyceride levels and insulin resistance index were significantly increased in the diabetic control group (P < 0.05). Aerobic exercise could significantly reduce fasting blood glucose and triglyceride levels (P < 0.05). Compared with the normal control group, the diabetic control group had significantly increased contents of urinary microalbumin, serum urea nitrogen and serum creatinine (P < 0.01), thickened renal basement membrane, mesangial matrix hyperplasia, accompanied by a certain degree of foot process fusion, and obvious lesion of the kidney . Aerobic exercise could significantly down-regulate the overexpressions of urinary microalbumin, serum urea nitrogen and serum creatinine in type 2 diabetic rats (P < 0.01), and significantly improve the pathological changes of the kidney in diabetic rats. Compared with the normal control group, the protein and gene expression levels of transforming growth factor β1, Notch1, Jagged1 and Hes1 in rat kidney tissue were significantly increased in the diabetic control group (P < 0.01). Aerobic exercise had a highly significant inhibitory effect on the overexpression of transforming growth factor β1, Notch1 and Jagged1 proteins and genes (P < 0.01) and also significantly inhibited the overexpression of Hes1 protein (P < 0.05). In conclusion, aerobic exercise can protect renal function and delay the pathological progression of the kidney in diabetic rats, which may be achieved by inhibiting the overexpression of transforming growth factor β1/Notch1 signaling pathway.

Key words: aerobic exercise, type 2 diabetic rat, kidney, transforming growth factor β1, Notch1

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