中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (28): 4484-4490.doi: 10.12307/2024.461

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

电针改善脊髓损伤大鼠逼尿肌的形态结构和膀胱功能

焦子远,卓  越,梁柔筠,丁强盛,曾学究,许  明,张  泓   

  1. 湖南中医药大学针灸推拿与康复学院,湖南省长沙市  410208
  • 收稿日期:2023-07-12 接受日期:2023-08-26 出版日期:2024-10-08 发布日期:2023-11-27
  • 通讯作者: 张泓,教授,博士生导师,湖南中医药大学针灸推拿与康复学院,湖南省长沙市 410208 许明,讲师,湖南中医药大学针灸推拿与康复学院,湖南省长沙市 410208
  • 作者简介:焦子远,女,1998年生,安徽省芜湖市人,汉族,硕士,主要从事常见疾病针灸、康复治疗的机制与临床研究。
  • 基金资助:
    国家自然科学基金面上项目(82274666),项目负责人:张泓;国家自然科学基金项目(82205255),项目负责人:许明;湖南中医药大学学科建设揭榜挂帅项目(22JBZ013),项目负责人:张泓;湖南中医药大学中西医结合一流学科重点项目(2021ZXYJH15),项目负责人:张泓

Electroacupuncture improves morphological structure of the detrusor muscle and bladder function in rats with spinal cord injury

Jiao Ziyuan, Zhuo Yue, Liang Roujun, Ding Qiangsheng, Zeng Xuejiu, Xu Ming, Zhang Hong   

  1. 1School of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, China
  • Received:2023-07-12 Accepted:2023-08-26 Online:2024-10-08 Published:2023-11-27
  • Contact: Zhang Hong, Professor, Doctoral Supervisor, School of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, China Xu Ming, Lecturer, School of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, China
  • About author:Jiao Ziyuan, Master, School of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, China
  • Supported by:
    National Natural Science Foundation of China (General Program), No. 82274666 (to ZH); National Natural Science Foundation of China, No. 82205255 (to XM); Hunan University of Chinese Medicine Discipline Construction Project, No. 22JBZ013 (to ZH); Integrated Traditional Chinese and Western Medicine First-Class Discipline Key Project of Hunan University of Chinese Medicine, No. 2021ZXYJH15 (to ZH)

摘要:


文题释义:

神经源性膀胱:因神经系统病变引起的膀胱和尿道功能障碍,进而产生一系列下尿路症状的疾病总称,是脊髓损伤后严重的合并症,临床上晚期脊髓损伤患者常因神经源性膀胱引起的肾衰竭而死亡。因此,脊髓损伤后神经源性膀胱的研究成为近年来研究的热点与难点。
结缔组织生长因子:首先由BRADHAM等于1991年在人脐静脉内皮细胞条件培养基中探索而获得的,为分子质量34-38 kD的富含半胱氨酸的分泌肽,与肝脏、肾脏、心脏及肺等在内的许多组织器官纤维化发生发展密切相关,其中也包括参与膀胱纤维化重塑过程。


背景:大量临床和基础研究表明,电针能够改善骶上脊髓损伤后神经源性膀胱的功能。

目的:观察电针对骶上脊髓损伤大鼠膀胱功能及结缔组织生长因子表达的影响。
方法:将48只雌性SD大鼠随机分为4组,每组12只:空白组不做任何处理;假手术组仅暴露T8椎体下脊髓;模型组建立T8椎体下脊髓横断损伤模型;电针组建立T8椎体下脊髓横断损伤模型后第19天给予电针干预,选择“次髎”“中极”“三阴交”三穴,20 min/次,1次/d,连续干预10 d。干预结束后,进行相关指标检测。

结果与结论:①尿流动力学检测:与空白组比较,模型组大鼠漏尿点压、膀胱最大容量、膀胱最大压力均升高(P < 0.05);与模型组比较,电针组大鼠漏尿点压、膀胱最大容量、膀胱最大压力均下降(P < 0.05);②苏木精-伊红染色:与空白组比较,模型组大鼠膀胱上皮细胞排列紊乱,固有膜被破坏,逼尿肌肌束肥大,肌纤维排列紊乱,组织水肿明显;与模型组比较,电针组大鼠膀胱上皮细胞排列相对规则有序,膀胱纤维化及组织水肿程度相对减轻;③Masson染色:模型组大鼠膀胱逼尿肌纤维化程度较重,电针组大鼠膀胱逼尿肌纤维化程度轻于模型组;④透射电镜观察:模型组大鼠膀胱逼尿肌线粒体肿胀、发生空泡化,逼尿肌形态发生扭曲变形,肌间隙增宽;与模型组比较,电针组大鼠膀胱逼尿肌线粒体轮廓略清晰可见,线粒体发生空泡化减少,肌间隙缩小;⑤Western blot检测:与空白组比较,模型组大鼠膀胱逼尿肌结缔组织生长因子的蛋白表达升高(P < 0.05);与模型组比较,电针组大鼠膀胱逼尿肌结缔组织生长因子的蛋白表达降低(P < 0.05);⑥结果表明:电针“次髎”“中极”“三阴交”穴可改善骶上脊髓损伤大鼠膀胱的形态结构和功能,其作用机制可能与下调逼尿肌组织结缔组织生长因子蛋白的表达相关。

https://orcid.org/0009-0008-9140-6132(焦子远)

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: 电针, 骶上脊髓损伤, 神经源性膀胱, 膀胱功能, 结缔组织生长因子, 逼尿肌

Abstract: BACKGROUND: Numerous clinical and basic studies have shown that electroacupuncture can improve the function of neurogenic bladder after suprasacral spinal cord injury.
OBJECTIVE: To observe the effects of electroacupuncture on bladder function and connective tissue growth factor expression in rats with suprasacral spinal cord injury.
METHODS: Forty-eight female Sprague-Dawley rats were randomly divided into four groups (n=12 per group): the blank group did not receive any treatment; the sham-operated group only exposed the T8 subvertebral spinal cord; in the model group established, a T8 subvertebral spinal cord transection injury model was established; in the electroacupuncture group, the T8 subvertebral spinal cord transection injury model was established, and electroacupuncture intervention at Ciliao (BL32), Zhongji (RN03) and Sanyinjiao (SP06) was given at 19 days after modeling, 20 minutes once a day, for 10 continuous days. After the intervention, the relevant indicators were detected.
RESULTS AND CONCLUSION: Urodynamics: Compared with the blank group, the leakage point pressure, maximum bladder capacity and maximum bladder pressure of rats in the model group increased (P < 0.05). Compared with the model group, the leakage point pressure, maximum bladder capacity and maximum bladder pressure of rats in the electroacupuncture group decreased (P < 0.05). Hematoxylin-eosin staining: Compared with the blank group, the bladder epithelial cells in the model group were arranged in a disordered manner, the lamina propria was destroyed, the detrusor muscle bundles were hypertrophied, the muscle fibers were arranged in a disordered manner, and the tissue edema was obvious. Compared with the model group, the bladder epithelial cells in the electroacupuncture group were arranged in a regular and orderly manner, and the degree of bladder fibrosis and tissue edema was relatively reduced. Masson staining: The degree of bladder detrusor muscle fibrosis was severe in the model group and it was lighter in the electroacupuncture group than in the model group. Transmission electron microscopy: Mitochondria in the bladder tissue in the model group were swollen and vacuolated, the morphology of the detrusor muscle was twisted and distorted, and the muscle gap was widened. Compared with the model group, mitochondria in the electroacupuncture group had a slightly clearer contour and were less vacuolated, and the muscle gap was narrowed. Western blot detection: The protein expression of connective tissue growth factor in the detrusor muscle of the bladder was elevated in the model group compared with the blank group (P < 0.05). Compared with the model group, the protein expression of connective tissue growth factor in the bladder detrusor muscle was decreased in the electroacupuncture group (P < 0.05). To conclude, electroacupuncture at Ciliao (BL32), Zhongji (RN03) and Sanyinjiao (SP06) acupoints can improve the morphology, structure and function of the bladder in rats with suprasacral spinal cord injury, and the mechanism of action may be related to the down-regulation of connective tissue growth factor protein expression in the detrusor muscle.

Key words: electroacupuncture, suprasacral spinal cord injury, neurogenic bladder, bladder function, connective tissue growth factor, detrusor muscle

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