中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (28): 4182-4188.doi: 10.3969/j.issn.2095-4344.2016.28.012

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

骨髓间充质干细胞移植脑梗死大鼠:神经功能恢复与突触素的表达

程率芳   

  1. 河南省中医院脑一病区,河南省郑州市  450000
  • 修回日期:2016-05-09 出版日期:2016-07-01 发布日期:2016-07-01
  • 作者简介:程率芳,男,1977年生,河南省宜阳市人,汉族,2005年南京中药大学毕业,硕士,主治医师,主要从事脑病研究。

Bone marrow mesenchymal stem cell transplantation for rat cerebral infarction: recovery of neurological function and expression of synaptophysin

Cheng Lv-fang   

  1. the First Cerebral Ward, Chinese Medicine Hospital of Henan, Zhengzhou 450000, Henan Province, China
  • Revised:2016-05-09 Online:2016-07-01 Published:2016-07-01
  • About author:Cheng Lv-fang, Master, Attending physician, the First Cerebral Ward, Chinese Medicine Hospital of Henan, Zhengzhou 450000, Henan Province, China

摘要:

文章快速阅读:

文题释义:
干细胞移植治疗脑梗死:
干细胞在体内有一定的趋向性,当脑梗死后干细胞会向脑梗死区域迁移。运用干细胞技术,即从人体分离纯化少量干细胞,经体外培养、定向诱导、基因修饰再将其移植到患者的脑内,可达到促进受损脑组织修复及重建的目的。
突触素:是一种特殊的膜蛋白,与突触结构和功能之间存在十分密切的联系。突触素(SYP)与神经递质的释放之间存在一定的关系,并参与到不同神经元之间的信息传递过程中,可以对突触传递效能的大小予以十分直观的反映。在发生脑梗死之后,在梗死灶周围会出现大量的神经细胞凋亡现象,突触结构遭到解体,神经元代谢能力和蛋白合成能力均出现显著的下降,导致突触素表达随之下降。

 

摘要
背景:
在脑缺血后神经功能的恢复过程中,突触素可以发挥出至关重要的作用。
目的:分析骨髓间充质干细胞移植后脑梗死大鼠神经功能改变以及与突触素表达的关系。
方法:60只大鼠随机分为4组,每组15只,分别设为假手术组和对照组、模型组、干细胞治疗组。对照组、模型组、干细胞治疗组均制备脑梗死模型,假手术组实施假手术操作。造模后1 d,干细胞治疗组侧脑室移植骨髓间充质干细胞治疗,对照组注射相同剂量的PBS。治疗后1,7,14 d分别对各组动物进行平衡木行走实验、转棒上行走实验、网屏实验评分和RT-PCR检测以及免疫组织化学检测突触素表达。
结果与结论:①治疗后7 d和14 d,干细胞治疗组平衡木行走实验、转棒上行走实验、网屏实验评分均显著低于对照组和模型组(均P < 0.05),对照组、模型组之间比较差异无显著性意义(P > 0.05);②治疗后1 d,假手术组的突触素mRNA表达和突触素阳性细胞数均显著高于其他3组(均P < 0.05),治疗后7 d和14 d,干细胞治疗组的突触素 mRNA表达和突触素阳性细胞数均显著高于其他3组(均P < 0.05),且假手术组的突触素 mRNA表达和突触素阳性细胞数均显著低于模型组和对照组(均P < 0.05);③结果提示,骨髓间充质干细胞移植治疗可以有效促进脑梗死大鼠神经功能的恢复,并促进局部突触素的生成。

 

 

关键词: 干细胞, 移植, 脑梗死, 骨髓间充质干细胞移植, 神经功能, 突触素

Abstract:

BACKGROUND: Synaptophysin plays an important role in the recovery of neural function after cerebral ischemia.
OBJECTIVE: To investigate the effects of bone marrow mesenchymal stem cell transplantation on nervous function and expression of synaptophysin after cerebral infarction.
METHODS: Totally 60 rats were equivalently randomized into four groups, including sham operation, control, model and stem cell treatment groups. Rats in the control, model and stem cell treatment groups were used for preparing cerebral infarction models, and the remaining underwent the sham operation. After 1 day of modeling, bone marrow mesenchymal stem cells were transplanted into the rat lateral ventricle in the stem cell treatment group, and rats in the control group was given the injection of the same amount of PBS. After 1, 7 and 14 days of treatment, rat’s neurological function was scored on beam-walking test, rotarod test and screen test, and expression of synaptophysin was detected by RT-PCR and immunohistochemical assay.
RESULTS AND CONCLUSION: At 7 and 14 days after treatment, the beam-walking test, rotarod test and screen test scores in the stem cell treatment group were significantly lower than those in the control and model groups (P < 0.05), and the above scores showed no significant differences between the control group and model group (P > 0.05). At 1 day after treatment, the mRNA expression of synaptophysin and the number of synaptophysin-positive cells in the sham operation group were significantly higher than those in the other three groups (P < 0.05); at 7 and 14 days after treatment, the mRNA expression of synaptophysin and the number of synaptophysin-positive cells in the stem cell treatment group were significantly increased compared with the other three groups (P < 0.05), and additionally, the mRNA expression of synaptophysin and the number of synaptophysin-positive cells in the sham operation group were significantly lower than those in the model and control groups (P < 0.05). These findings suggest that bone marrow mesenchymal stem cell transplantation can effectively promote the recovery of neurological function in cerebral infarction rats, and partially promote the formation of synaptophysin.

 

 

Key words: Stem Cells, Stem Cell Transplantation, Cerebral Infarction

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