中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (6): 827-833.doi: 10.3969/j.issn.2095-4344.2016.06.010

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

脂肪间充质干细胞移植急性心肌梗死区域对心肌组织的保护作用

王立忠1,李 燕2,穆怀彬2,黄 琨2,高 峻2   

  1. 河北医科大学附属唐山工人医院,1老年病一科,2心血管内科,河北省唐山市 063000
  • 收稿日期:2015-12-27 出版日期:2016-02-05 发布日期:2016-02-05
  • 通讯作者: 王立忠,河北医科大学附属唐山工人医院老年病一科,河北省唐山市 063000
  • 作者简介:王立忠,1964年生 ,男, 1999年河北医科大学毕业,硕士,河北省唐山市人,汉族,主任医师。
  • 基金资助:
    唐山科技局2011年度的科学技术指导计划项目(111302100a)

Adipose-derived mesenchymal stem cell transplantation protects the myocardial tissues from acute myocardial infarction

Wang Li-zhong1, Li Yan2, Mu Huai-bin2, Huang Kun2, Gao Jun2   

  1. 1Department of Geriatrics, 2Department of Cardiovascular Medicine, Tangshan Worker’s Hospital of Hebei Medical University, Tangshan 063000, Hebei Province, China
  • Received:2015-12-27 Online:2016-02-05 Published:2016-02-05
  • Contact: Wang Li-zhong, Department of Geriatrics, Tangshan Worker’s Hospital of Hebei Medical University, Tangshan 063000, Hebei Province, China
  • About author:Wang Li-zhong, Master, Chief physician, Department of Geriatrics, Tangshan Worker’s Hospital of Hebei Medical University, Tangshan 063000, Hebei Province, China
  • Supported by:

    the Scientific Guiding Project of Tangshan Science and Technology Department in 2011, No. 111302100a

摘要:

文章快速阅读:

 

文题释义:
脂肪间充质干细胞:是脂肪组织中一类多能性干细胞。由于脂肪组织来源广泛、取材容易、不涉及伦理问题、便于自体移植,日益受到研究者的重视。脂肪间充质干细胞已成功地在体内条件下,将其诱导分化成为脂肪、骨、软骨、肌肉等组织类型细胞。
心肌梗死:是冠状动脉闭塞、血流中断、使部分心肌因严重的持久性缺血而发生局部坏死。临床上有剧烈而较持久的胸骨后疼痛、发热、白细胞增多、红细胞沉降率加快,血清心肌酶活力增高及进行性心电图变化,可发生心律失常、休克或心力衰竭。

  

背景:脂肪间充质干细胞来源丰富,取材方便,其移植可治疗急性心肌梗死。
目的:探讨脂肪间充质干细胞移植对急性心肌梗死大鼠心肌组织的保护作用。
方法:实验建立急性心肌梗死模型大鼠,并移植脂肪间充质干细胞,设置模型组和对照组进行对比。
结果与结论:(1)超声心动图:与模型组相比,细胞移植组大鼠心功能指标左室收缩末径、左室舒张末径和射血分数检测结果均明显改善(P < 0.05)。(2)苏木精-伊红染色:模型组大鼠的心肌梗死区明显,几乎无存活的心肌组织,且梗死区的血管较少;与模型组大鼠比,细胞移植组可明显出现部分存活心肌组织和移植后的脂肪间充质干细胞。(3)心肌梗死死面积:细胞移植组心肌梗死面积百分比明显低于模型组(P < 0.05)。(4)心肌组织免疫组织化学染色显微检测:脂肪间充质干细胞可以存活于大鼠梗死的心肌组织中,与模型组相比,细胞移植组心肌特异性蛋白-心肌肌钙蛋白T的表达明显提高(P < 0.05)。(5)结果证实:脂肪充质干细胞移植对梗死的心肌组织有保护作用,可有效改善心肌功能。 

ORCID: 0000-0003-1396-7184(王立忠)

关键词: 干细胞, 移植, 心肌梗死, 动物模型, 脂肪间充质干细胞, 急性心肌梗死, 大鼠, 心肌组织, 干细胞移植, 左室收缩末径, 左室舒张末径, 射血分数, 蛋白表达, 组织工程

Abstract:

BACKGROUND: Adipose-derived mesenchymal stem cells have rich sources that are easily obtained, which can be used to treat acute myocardial infarction.
OBJECTIVE: To investigate the therapeutic effect of adipose-derived mesenchymal stem cell transplantation on acute myocardial infarction in rats.
METHODS: Rat models of acute myocardial infarction were made and subjected to adipose-derived mesenchymal stem cell transplantation in comparison with model and control (sham operation) groups.
RESULTS AND CONCLUSION: Echocardiography findings showed significant improvement in the left ventricular end-systolic diameter, left ventricular end-diastolic diameter and ejection fraction in the cell transplantation group compared with the model group (P < 0.05). Hematoxylin-eosin staining showed that myocardial infarction was evident in the model group, in which, there were rarely viable myocardial tissues and few vessels in the infarcted region, but in the cell transplantation group, there were evident survived myocardial tissues and transplanted cells. The percentage of infarct size was significantly lower in the cell transplantation group than the model group (P < 0.05). Immunohistochemical staining showed that adipose-derived mesenchymal stem cells were able to survive in the infarcted myocardial tissues, and the expression of cardiac troponin T in the cell transplantation group was significantly higher than that in the model group (P < 0.05). Experimental data show that adipose-derived mesenchymal stem cell transplantation can protect the myocardial tissues after myocardial infarction, and effectively improve the myocardial function.