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中华胃肠内镜电子杂志 ›› 2025, Vol. 12 ›› Issue (01) : 35 -40. doi: 10.3877/cma.j.issn.2095-7157.2025.01.008

论著

一种有效的食管ESD 术后狭窄动物模型的构建方法
刘震宇1,2, 高飞1,3, 张文刚1, 李海洋1,2, 冯建聪1,2, 柴宁莉1,(), 令狐恩强1,()   
  1. 1. 100853 北京,解放军总医院第一医学中心消化内科医学部
    2. 100853 北京,解放军医学院
    3. 100034 北京,军委机关事务管理总局
  • 收稿日期:2024-11-09 出版日期:2025-02-15
  • 通信作者: 柴宁莉, 令狐恩强
  • 基金资助:
    国家重点研发计划(2022YFC2503600;2022YFC2503601)

A sufficient animal model of esophageal stricture after ESD

Zhenyu Liu1,2, Fei Gao1,3, Wengang Zhan1, Haiyang Li1,2, Jiancong Feng1,2, Ningli Chai1,(), Enqiang Linghu1,()   

  1. 1. Department of Gastroenterology,The First Medical Center,Chinese PLA General Hospital,Beijing 100853,China
    2. Chinese PLA Medical School,Beijing 100853,China
    3. Government Offices Administration of The Central Military Commission,Beijing 100034,China
  • Received:2024-11-09 Published:2025-02-15
  • Corresponding author: Ningli Chai, Enqiang Linghu
引用本文:

刘震宇, 高飞, 张文刚, 李海洋, 冯建聪, 柴宁莉, 令狐恩强. 一种有效的食管ESD 术后狭窄动物模型的构建方法[J/OL]. 中华胃肠内镜电子杂志, 2025, 12(01): 35-40.

Zhenyu Liu, Fei Gao, Wengang Zhan, Haiyang Li, Jiancong Feng, Ningli Chai, Enqiang Linghu. A sufficient animal model of esophageal stricture after ESD[J/OL]. Chinese Journal of Gastrointestinal Endoscopy(Electronic Edition), 2025, 12(01): 35-40.

目的

探索一种有效的食管内镜下黏膜剥离术(ESD)后狭窄的动物模型的构建方法。

方法

使用6 只体重25~30 kg 的巴马小型猪,通过ESD 操作造成长8 cm、环食管5/6 周的黏膜创面,术后第7、14、21 天进行内镜检查并评估创面愈合及疤痕形成情况,第21 天后处死并取材,测量并计算黏膜狭窄率。 对创面进行病理检查并评估瘢痕组织形成情况。

结果

6 只巴马小型猪均成功建立食管ESD 术后狭窄动物模型,均未出现无法控制的大出血及穿孔等严重并发症。 食管黏膜狭窄率达(63.2±2.9)%,其一致性较好;病理诊断结果提示创面处瘢痕组织增生,进而形成食管狭窄,与人类食管ESD 术后狭窄形成的过程及机制相似。

结论

在巴马小型猪食管中下段造成长8 cm、环食管5/6 周的黏膜创面是一种有效形成食管狭窄的动物模型的构建方法,可应用于食管ESD 术后狭窄机制的研究及相关防治方法的探索,其应用潜力仍需要进一步的研究。

Objective

To explore and construct a sufficient animal model of esophageal stenosis associated with endoscopic submucosal dissection (ESD).

Methods

Bama mini pigs weighing 25-30 kg(n=6) were used in this study.Each porcine was made a wound with a length of 8 cm and circumference of 5/6 on the esophageal through endoscopy.Endoscopic examination was performed on postoperative days 7,14,and 21 to evaluate wound healing and scar formation.On the 21st day,the animals were sacrificed and esophageal tissues were taken to measure and calculate the mucosal stricture rate.Performed pathological examination to evaluate the formation of scar tissue.

Results

All experimental animals had successfully performed esophageal stenosis associated with ESD,and there had been no serious complications such as massive bleeding and perforation.The esophageal mucosal stricture rate was (63.2±2.9)%,which was satisfactory.Pathological results showed that scar tissue hyperplasia occurred on the wound,leading to esophageal stenosis,which is consistent with the process and mechanism of human.

Conclusion

A wound with a length of 8 cm and a circumference of 5/6 on the esophagus of the Bama mini pig through endoscopy is a stable animal model for the formation of esophageal stenosis,which can be applied to the study of the mechanism of esophageal stenosis after ESD surgery and the exploration of related prevention and treatment methods.Its application potential still needs further research.

图1 实验动物(猪)食管创面的建立 注:A: 使用Dual 刀进行黏膜标记;B:拟切除黏膜标记完成;C:黏膜下注射亚甲蓝溶液;D:沿标记切开黏膜;E:黏膜下剥离;F:成功建立黏膜创面
表1 实验动物(猪)基线资料[n=6,只]
图2 实验动物(猪)食管创面的内镜下表现 注:A:ESD 术后观察食管创面;B:术后7 d 复查发现食管狭窄形成,内镜无法通过;C:术后14 d 复查发现食管狭窄进一步发展;D:术后21 d 复查发现食管腔隙呈“针尖样”改变
表2 实验动物(猪)体重[n=6,只]
图3 实验动物(猪)食管狭窄的测量与评估 注:A:实验动物(猪) 体重变化;B: 将食管标本进行固定及测量;C:创面组织与正常黏膜的病理表现;D: 创面组织与正常黏膜瘢痕比率对比(aP<0.05)
表3 实验动物(猪)食管标本特点[n=6,只]
表4 实验动物(猪)食管标本测量及瘢痕比率计算[n=6,只]
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