中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (18): 3840-3847.doi: 10.12307/2025.680

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

完全性脊髓横断后排尿次数对神经源性膀胱模型大鼠成模率的影响

梁柔筠,展立芬,曾学究,丁强盛,罗小精,卓  越,艾  坤,邓石峰,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:2024-06-11 接受日期:2024-07-26 出版日期:2025-06-28 发布日期:2024-11-28
  • 通讯作者: 张泓,博士,教授,博士研究生导师,湖南中医药大学针灸推拿与康复学院,湖南省长沙市 410208 共同通讯作者:许明,硕士,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:梁柔筠,女,2000年生,广西壮族自治区柳州市人,汉族,湖南中医药大学在读硕士,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:
    国家自然科学基金项目(822746668),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;湖南省自然科学基金项目(2022JJ40312),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;湖南中医药大学研究生创新项目(2023CX13),项目负责人:展立芬

Effect of the number of times to urinate on the modeling rate of neurogenic bladder model in rats after complete spinal cord transection

Liang Roujun, Zhan Lifen, Zeng Xuejiu, Ding Qiangsheng, Luo Xiaojing, Zhuo Yue, Ai Kun, Deng Shifeng, Xu Ming, Zhang Hong   

  1. College of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
  • Received:2024-06-11 Accepted:2024-07-26 Online:2025-06-28 Published:2024-11-28
  • Contact: Zhang Hong, MD, Professor, Doctoral supervisor, College of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China Co-corresponding author: Xu Ming, MS, Lecturer, College of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
  • About author:Liang Roujun, Master candidate, College of Acupuncture, Massage and Rehabilitation, Hunan University of Chinese Medicine, Changsha 410208, Hunan Province, China
  • Supported by:
    National Natural Science Foundation of China, Nos. 822746668 (to ZH) and 82205255 (to XM); Hunan Provincial Natural Science Foundation, No. 2022JJ40312 (to XM); Discipline Construction Project of Hunan University of Chinese Medicine, No. 22JBZ013 (to ZH); Graduate Innovation Project of Hunan University of Chinese Medicine, No. 2023CX13 (to ZLF)

摘要:


文题释义:
神经源性膀胱:因脊髓等排尿控制中枢或周围神经病变导致膀胱逼尿肌和尿道括约肌功能障碍的疾病总称,是脊髓损伤后常见且严重的并发症之一。临床上骶上脊髓损伤患者常表现为逼尿肌反射亢进型神经源性膀胱,出现尿频、尿急、尿失禁或尿潴留等症状,严重影响患者心理及其日常生活。
手法辅助排尿技术:通过手法按压下腹部,利用腹压帮助膀胱内尿液排出。在神经源性膀胱动物模型中,Crede法作为手法辅助排尿技术的一种,常用于动物模型的术后护理,辅助动物膀胱排空,减少因尿液反复残留引起的并发症。目前该方法在临床上已很少使用,仅在动物造模时应用。

背景:脊髓损伤常导致逼尿肌反射亢进型神经源性膀胱,目前对其发病机制和治疗缺乏明确认识,建立稳定可靠的动物模型对揭示疾病的病理机制和探索治疗方法具有重要影响。
目的:探究完全性脊髓横断术后辅助排尿次数对神经源性膀胱模型大鼠的影响,以提高神经源性膀胱模型大鼠术后生存率及成模率。
方法:从46只雌性SD大鼠中按随机数字表法抽取6只为假手术组,剩余40只大鼠完全性脊髓横断造模后随机分为每日排尿0,1,3,5次组,每组10只。术后19 d内每隔3 d测量残余尿量,术后第19天时观察存活及成模情况,进行尿流动力学检测及离体逼尿肌肌条收缩实验。
结果与结论:①存活率及成模率:每日排尿0次组存活率10%,成模率10%;每日排尿1次组存活率20%,成模率10%;每日排尿3,5次组存活率70%,成模率70%;②残余尿量:与假手术组相比,术后第3,6,9,12,15天,每日排尿3,5次组的残余尿量显著增加(P < 0.01);术后第18天,每日排尿3,5次组的残余尿量增多(P < 0.05);与每日排尿3次组相比,术后第6天,每日排尿5次组的残余尿量减少(P < 0.05),术后第3,9,12,15,18天,每日排尿5次组的残余尿量无统计学差异;③尿流动力学:与假手术组相比,每日排尿3,5次组大鼠的漏尿点压差明显减小(P < 0.01),膀胱最大容量显著增大(P < 0.01);与每日排尿3次组相比,每日排尿5次组的漏尿点压差和膀胱最大容量均无统计学差异;④离体逼尿肌肌条收缩实验:与假手术组相比,每日排尿3,5次组逼尿肌肌条收缩幅度和频率显著减少(P < 0.01);与每日排尿3次组相比,每日排尿5次组的逼尿肌肌条收缩幅度和频率均无统计学差异。结果表明:辅助排尿是成功构建逼尿肌反射亢进型神经源性膀胱模型的影响因素之一,每日排尿3次或5次无明显差异,结合实际工作量和成模率,建议每日排尿频率至少3次及以上。

https://orcid.org/0009-0006-4184-6004(梁柔筠)

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: 神经源性膀胱, 逼尿肌反射亢进型, 脊髓损伤, 完全性脊髓横断术, 排尿次数, 手法辅助排尿技术, SD大鼠, 工程化动物模型

Abstract: BACKGROUND: Spinal cord injury often leads to neurogenic bladder with hyperreflexia of the forced urethral muscle, but there is a lack of clear understanding of its pathogenesis and treatment, and establishing a stable and reliable animal model has an important impact on revealing its pathomechanisms and exploring therapeutic approaches.
OBJECTIVE: To investigate the effect of the number of times to urinate on neurogenic model rats after complete spinal cord transection in order to improve the postoperative survival and modeling rate of neurogenic model rats.
METHODS: Out of 46 female Sprague-Dawley rats, 6 were selected as the sham-operated group using the random number table method, and the remaining 40 rats were randomly divided into 0, 1, 3, and 5 times daily urination groups after complete spinal cord transection modeling, with 10 rats in each group. The residual urine volume was measured every 3 days within 19 postoperative days, and the survival and modeling were observed on the 19th day after the operation, and urodynamics tests and contraction experiments of isolated forced urethra muscle strips were performed.
RESULTS AND CONCLUSION: (1) Survival and modeling rate: there was 10% survival rate and 10% modeling rate in the group of 0 times daily urination; 20% survival rate and 10% modeling rate in the group of 1 time daily urination; 70% survival rate and 70% modeling rate in the groups of 3 and 5 times daily urination. (2) Residual urine volume: compared with the sham-operated group, the residual urine volume of the groups of 3 and 5 times daily urination was significant increased on postoperative days 3, 6, 9, 12, and 15 (P < 0.01); the residual urine volume of the groups of 3 and 5 times daily urination was increased on the 18th day after surgery (P < 0.05). Compared with the 3 times daily urination group, the residual urine volume was decreased in the 5 times daily urination group on the 6th day after surgery (P < 0.05), while there was no significant difference in the residual urine volume between the 3 and 5 times daily urination groups on the 3rd, 9th, 12th, 15th, and 18th days after surgery. (3) Urodynamics: Compared with the sham-operated group, the differential pressure at the point of leakage was significantly reduced (P < 0.01) and the maximal volume was significantly increased (P < 0.01) in the 3 and 5 times daily urination groups. There was no statistical difference in the differential pressure at the point of leakage and the maximal volume between the 3 and 5 times daily urination groups. (4) Muscle-strip contraction test of isolated detrusor muscles: Compared with the sham-operated group, the contraction amplitude and frequency of detrusor muscle strips were significantly reduced in the 3 and 5 times daily urination groups (P < 0.01). There was no statistically significant difference in the contraction amplitude and frequency of detrusor muscle strips between the 3 and 5 times daily-urination groups. In conclusion, assisted urination is one of the keys to establish a successful neurogenic model of urethral reflexes, and there is no significant difference in the effects of urinating 3 or 5 times a day on the neurogenic model. It is recommended to urinate at least 3 times a day based on the actual workload and the modeling rate. 

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

Key words: neurogenic bladder model, hyperreflexia of the urethral muscle, spinal cord injury, complete spinal cord transection, number of urinations, manually assisted voiding techniques, SD rat, engineered animal model

中图分类号: