中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (6): 861-867.doi: 10.3969/j.issn.2095-4344.2016.06.015

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

骨髓间充质干细胞移植保护小肠缺血再灌注损伤

刘洪锋1,李 潞2   

  1. 1南阳医学高等专科学校第一附属医院,河南省南阳市 473000;2郑州大学第二附属医院,河南省郑州市 450014
  • 收稿日期:2016-01-06 出版日期:2016-02-05 发布日期:2016-02-05
  • 作者简介:刘洪锋,男,1975年生,河南省方城县人,汉族,硕士,主治医师,主要从事普外科方面的研究。
  • 基金资助:
    河南省科技厅基础科技攻关课题(122300450037)

Bone marrow mesenchymal stem cell transplantation protects against intestinal ischemia-reperfusion injury in rats

Liu Hong-feng1, Li Lu2   

  1. 1First Affiliated Hospital of Nanyang Medical College, Nanyang 473000, Henan Province, China; 2Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, Henan Province, China
  • Received:2016-01-06 Online:2016-02-05 Published:2016-02-05
  • About author:Liu Hong-feng, Master, Attending physician, First Affiliated Hospital of Nanyang Medical College, Nanyang 473000, Henan Province, China
  • Supported by:

    the Basic Scientific Tackle Key Project of Henan Provincial Science and Technology Department, No. 122300450037

摘要:

文章快速阅读:

文题释义:

肠黏膜通透性:是指肠黏膜上皮容易被某些分子物质以简单扩散方式通过的特性。有研究发现,早在肠黏膜形态学出现明显变化之前,肠黏膜通透性已经增高,因此,可以通过测定肠黏膜通透性来判断是否存在肠黏膜屏障功能受损和受损程度。

紧密连接:是维持黏膜上皮机械屏障和通透性的重要结构。紧密连接蛋白ZO-1是其重要组成蛋白之一,不但参与调节细胞物质转运和维持上皮极性,而且还与细胞增殖分化、肿瘤细胞转移、基因转录等过程的信息传递和调控有关。

 

背景:骨髓间充质干细胞良好的增殖分化能力和旁分泌功能使其在肠道疾病方面具有不可替代的优势。
目的:探讨骨髓间充质干细胞移植对大鼠小肠缺血再灌注损伤的影响。
方法:取48只SD大鼠建立小肠缺血再灌注损伤模型,随机分为2组:在实验组肠系膜下注射1 mL骨髓间充质干细胞,对照组肠系膜下注射等量的生理盐水,于移植后0,2,6,24,72,120 h留取大鼠血清,ELISA法检测血清中二胺氧化酶、肿瘤坏死因子α、D-乳酸水平;移植后24 h取小肠组织光镜下观察病理变化,透射电镜下观察紧密连接变化,免疫组化法检测ZO-1蛋白表达。
结果与结论:①骨髓间充质干细胞移植后6 h 和 24 h 时实验组血清二胺氧化酶、肿瘤坏死因子α和 D-乳酸水平低于对照组(P < 0.05)。②骨髓间充质干细胞移植组小肠细胞坏死、绒毛水肿、肠道充血及炎细胞浸润较对照组轻。③骨髓间充质干细胞组ZO-1蛋白表达高于对照组。④结果表明小肠缺血再灌注损伤大鼠肠黏膜下移植骨髓间充质干细胞可以改善小肠黏膜的通透性。 

 

 

ORCID: 0000-0002-5298-9207 (刘洪锋)

关键词: 干细胞, 移植, 骨髓间充质干细胞, 细胞移植, 小肠, 缺血再灌注损伤, ZO-1蛋白

Abstract:

BACKGROUND: Bone marrow mesenchymal stem cells have good proliferation and paracrine functions, which have irreplaceable advantages in the treatment of intestinal diseases.
OBJECTIVE: To explore the effects of bone marrow mesenchymal stem cell transplantation on intestinal ischemia-reperfusion injury in rats.
METHODS: Forty-eight Sprague-Dawley rats were enrolled to make animal models of ischemic reperfusion injury of the intestine, and then model rats were randomized into experimental and control groups. After modeling, 1 mL bone marrow mesenchymal stem cells or the same volume of normal saline were injected into the intestinal mucosa of rats in the two groups, respectively. At hours 0, 2, 6, 24, 72, 120 after injection, serum diamine oxidase, tumor necrosis factor α, and D-lactic acid levels were detected by ELISA method. At 24 hours after injection, rat intestinal tissues were taken and observed pathologically under light microscopy, and their close connections were observed under transmission electron microscope. ZO-1 protein levels were detected by immunohistochemistry method.
RESULTS AND CONCLUSION: Compared with the control group, the serum diamine oxidase, tumor necrosis factor α, and D-lactic acid levels were significantly lower in the experimental group at hours 6 and 24 after injection (P < 0.05). Intestinal necrosis, villous edema, intestinal congestion and inflammatory cell infiltration in the experimental group were milder than those in the control group. In addition, the ZO-1 protein expression in the experimental group was higher than that in the control group. Experimental results show that bone marrow mesenchymal stem cell transplantation into the intestinal mucosa can improve the intestinal mucosal permeability in rats with intestinal ischemia-reperfusion injury.