中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (6): 969-973.doi: 10.3969/j.issn.2095-4344.2013.06.004

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

自体骨髓间充质干细胞移植梗死心肌猪的心功能变化

虞桂平1,沈振亚1,郭世强1,余云生1,陈国强2   

  1. 1苏州大学附属第一医院胸心血管外科,江苏省苏州市 215000
    2东南大学医学院附属江阴医院胸心血管外科,江苏省江阴市 214400
  • 收稿日期:2012-05-13 修回日期:2012-06-18 出版日期:2013-02-05 发布日期:2013-02-05
  • 作者简介:虞桂平☆,男,1980年生,江苏省靖江市人,东南大学医学院附属江阴医院胸外科工作,苏州大学附属第一医院胸心血管外科在读博士,主治医师,主要从事胸心血管外科基础研究。 Xiaoyuer97103@163.com

Cardiac function of pigs with myocardial infarction after autologous bone marrow mesenchymal stem cell transplantation

Yu Gui-ping1, Shen Zhen-ya1, Guo Shi-qiang1, Yu Yun-sheng1, Chen Guo-qiang2   

  1. 1 Department of Thoracic and Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China
    2 Department of Thoracic and Cardiovascular Surgery, Affiliated Jiangyin Hospital of Medical School of Southeast University, Jiangyin 214400, Jiangsu Province, China
  • Received:2012-05-13 Revised:2012-06-18 Online:2013-02-05 Published:2013-02-05
  • About author:Yu Gui-ping☆, Studying for doctorate, Attending physician, Department of Thoracic and Cardiovascular Surgery, the First Affiliated Hospital of Soochow University, Suzhou 215000, Jiangsu Province, China Xiaoyuer97103@163.com

摘要:

背景:干细胞移植可改善缺血性心肌血供并改善心功能。
目的:进一步验证自体骨髓间充质干细胞在心肌梗死后的应用及效果评价。
方法:15只健康太湖梅山猪通过冠脉栓塞建立心肌梗死模型。随机分为3组,每组5只,其中2组分别在心肌梗死后3 h,2周行自体骨髓干细胞移植,模型组不移植细胞。行心脏超声观察心脏功能各指标的改变;并在不同时间点检测血清血管内皮生长因子值;在实验终点取大体标本并通过免疫组织化学检测移植细胞在心肌内定植及分化情况,检测心肌血管密度。
结果与结论:心肌梗死3 h组与模型组比较,射血分数、左室舒张期内径、左室收缩期内径各项心功能指标及心肌血管密度、不同时间点血清血管内皮生长因子水平差异无显著性意义。心肌梗死后2周移植组与模型组相比,心功能指标均有改善,心肌血管密度大于模型组,血清血管内皮生长因子水平明显高于较移植前(P < 0.05)。提示不同时间点心肌微环境对于骨髓来源的间充质干细胞分化及定植的影响,心肌梗死后急性期内局部微环境不利于移植细胞的存活,在瘢痕修复早期行骨髓干细胞移植对骨髓干细胞的分化和定植以及对心功能的改善有较好的效果。

关键词: 干细胞, 骨髓干细胞, 骨髓间充质干细胞, 心肌梗死, 缺血性心肌疾病, 干细胞移植, 心功能, 血管密度, 血管内皮生长因子, 分化, 定植, 猪, 干细胞图片文章

Abstract:

BACKGROUND: Stem cells transplantation can improve the ischemic myocardial blood supply and improve the cardiac function.
OBJECTIVE: To further identify the application and effect of autologous bone marrow mesenchymal stem cells on the cardiac function after myocardial infarction.
METHODS: Fifteen Taihu Meishan pigs were selected to make the myocardial infarction models, and then divided into four groups (5 swine in each group). At 2 weeks after modeling, the pigs were treated with autologous bone marrow stem cells transplantation. The change in each index of cardiac function was observed with Doppler. The level of serum vascular endothelial growth factor was detected in different periods after transplantation. At the end of the experiment, the general specimens were removed, and the colonization and differentiation of the transplanted cells were detected with immunohistochemistry, and the myocardial vascular density was also detected.
RESULTS AND CONCLUSION: There were no significant differences in ejection fraction, left ventricular internal dimension diastole and left ventricular internal dimension systole, as well as the myocardial vascular density and the level of serum vascular endothelial growth factor at different time points between myocardial infarction 3 hours group and model group. Compared with the model group, the cardiac function indicators were improved in the transplantation group at 2 weeks after transplantation, the myocardial vascular density in the transplantation group was higher than that in the model group, the cardiac function at 2 weeks after myocardial infarction was better than others and the serum vascular endothelial growth factor level was improved after transplantation (P < 0.05). The results suggest that myocardial microenvironment at different time points has different effects on bone marrow mesenchymal stem cell differentiation and colonization, and bone marrow-derived stem cell transplantation in the early scar repairing has positive effects on the improvement of cardiac function and the differentiation and colonization of bone marrow-derived stem cells.

Key words: stem cells, bone marrow-derived stem cells, bone marrow mesenchymal stem cells, myocardial infarction, ischemic myocardial disease, stem cell transplantation, cardiac function, vascular density, vascular endothelial growth factor, differentiation, colonization, pig, stem cell photographs-containing paper

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