《中国康复理论与实践》 ›› 2017, Vol. 23 ›› Issue (6): 634-640.doi: 10.3969/j.issn.1006-9771.2017.06.003

• 专题 脊髓损伤研究 • 上一篇    下一篇

血清二胺氧化酶含量与大鼠急性脊髓损伤后肠道运动功能的关系

杨森, 杨拯, 鄢靖欣, 徐洲, 徐文坚, 田海燕, 代小琳, 杨平   

  1. 成都医学院,四川成都市610500。
  • 收稿日期:2016-10-19 修回日期:2016-12-04 出版日期:2017-06-25 发布日期:2017-06-27
  • 通讯作者: 杨平(1977-),男,辽宁盘锦市人,博士,副教授,主要研究方向:基础医学。E-mail: 920192655@qq.com。
  • 作者简介:杨森(1993-),男,汉族,四川绵阳市人,主要研究方向:脊髓损伤后肠道动力障碍机制。
  • 基金资助:
    1.四川省教育厅科研计划重点项目(No.16ZA0296); 2.成都医学院大学生创新实验计划项目(No.CXJS201309); 3.四川省科技厅应用基础研究项目(No.2015JY0205); 4.四川省卫生和计划生育委员会普及应用项目(No.17PJ591)

Relationship between Serum Diamine Oxidase Content and Intestinal Motility after Acute Spinal Cord Injury

YANG Sen, YANG Zheng, YAN Jing-xin, XU Zhou, XU Wen-jian, TIAN Hai-yan, DAI Xiao-lin, YANG Ping   

  1. School of Basic Medical Sciences, Chengdu Medical College, Chengdu, Sichuan 610500, China
  • Received:2016-10-19 Revised:2016-12-04 Published:2017-06-25 Online:2017-06-27
  • Contact: Correspondence to YANG Ping. E-mail: 920192655@qq.com

摘要: 目的 测定急性脊髓损伤大鼠血清中二胺氧化酶(DAO)的含量,同时观察肠道运动功能的变化和肠黏膜屏障损伤的程度。方法 45只 Sprague-Dawley大鼠随机分为打击组(A组)、假手术组(B组)和对照组(C组),每组15只。采取改良Allen打击法(10 g×25 mm)损伤大鼠T10脊髓节段。术后1 d、3 d、7 d分别对各组大鼠进行后肢功能BBB评分,测定大鼠回肠肌电慢波及平滑肌收缩,并做回肠HE染色,ELISA试剂盒测定血清DAO含量。结果 脊髓损伤后1 d、3 d和7 d,A组BBB评分显著低于C组(P<0.001),B组与C组无显著性差异(P>0.05)。脊髓损伤后1 d、3 d,A组慢波频率和振幅低于C组(P<0.05),收缩频率和振幅低于C组(P<0.05),B组与C组无显著性差异(P>0.05);脊髓损伤后7 d,三组肌电慢波频率和振幅、收缩的频率和振幅均无显著性差异(P>0.05)。A组回肠黏膜水肿、倒伏,炎性细胞浸润,黏膜下间隙增大。A组肠黏膜损伤Chiu评分高于B组和C组(P<0.05)。脊髓损伤后1 d、3 d,A组大鼠血清DAO含量高于C组(P<0.05),B组与C组无显著性差异(P>0.05);脊髓损伤后7 d,三组间血清DAO含量均无显著性差异(P>0.05)。结论 血清DAO含量可以反映大鼠急性脊髓损伤后肠道的运动功能和黏膜损伤程度。

关键词: 脊髓损伤, 二胺氧化酶, 肠道运动功能, 黏膜损伤, 大鼠

Abstract: Objective To measure the level of diamine oxidase (DAO), and observe the intestinal motor and mucosal barrier injury after acute spinal cord injury (SCI) in rats. Methods A total of 45 Sprague-Dawley rats were randomly divided into SCI group (group A, n=15), sham group (group B, n=15) and control group (group C, n=15). SCI model was established with Allen's strike mode (10 g × 25 mm) by striking T10 spinal segment in rats. One day, three days and seven days after SCI, hind limb motor function was assessed with Basso-Beattie-Bresnahan (BBB) Scale in each group, the myoelectric slow wave and ileum smooth muscle contractility were measured in rats, ileum tissues were tested with HE staining, and the DAO content of serum was tested with ELISA kit. Results One day, three days and seven days after SCI, the BBB score was significantly lower in group A than in groups B and C (P<0.001). One day, three days after SCI, the frequency and amplitude of both slow wave and contractility were lower in group A than in groups B and C (P<0.05); seven days after SCI, there was no significant difference among three groups (P>0.05). Group A showed ileal mucosal edema, lodging, inflammatory cell infiltration, and submucosal gap increase. The Chiu's score of intestinal mucosal injury was higher in group A than in groups B and C (P<0.05), as well as the serum DAO content one day and three days after SCI (P<0.05), and no significant difference was found in the serum DAO content among three groups seven days after SCI (P>0.05). Conclusion Serum DAO content may respond to the intestinal motor function and mucosal injury after acute SCI in rats.

Key words: spinal cord injury, diamine oxidase, intestinal motor function, mucosal injury, rats

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