中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (33): 5320-5324.doi: 10.3969/j.issn.2095-4344.2017.33.012

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

脐带间充质干细胞移植急性脑创伤大鼠损伤区域微血管密度的变化

徐海环1,2,董化江1,商崇智3,赵明亮3   

  1. 1天津大学精密仪器与光电子工程学院,天津市 300072;2武警后勤学院附属医院皮肤科,天津市 300162;3天津市神经修复重点实验室,天津市 300162
  • 修回日期:2017-06-18 出版日期:2017-11-28 发布日期:2017-12-01
  • 通讯作者: 赵明亮,博士,副主任医师,天津市神经修复重点实验室,天津市 300162; 并列通讯作者:董化江,博士,天津大学精密仪器与光电子工程学院,天津市 300072
  • 作者简介:徐海环,女,1975年生,河北省唐山市人,汉族,天津大学精密仪器与光电子工程学院在读博士,主治医师,讲师,主要从事干细胞应用基础与临床转化方面的研究。
  • 基金资助:

    天津市自然科学基金(16JCYBJC27600)

Umbilical cord mesenchymal stem cell transplantation increases microvessel density in surrounding areas of acute traumatic brain injury in rats

Xu Hai-huan1, 2, Dong Hua-jiang1, Shang Chong-zhi3, Zhao Ming-liang3   

  1. 1School of Precise Instrument and Optoelectronic Engineering, Tianjin University, Tianjin 300072, China; 2Department of Dermatology, Affiliated Hospital of Logistics University of People’s Armed Police Force, Tianjin 300162, China; 3Key Laboratory of Neural Repair in Tianjin, Tianjin 300162, China
  • Revised:2017-06-18 Online:2017-11-28 Published:2017-12-01
  • Contact: Zhao Ming-liang, M.D., Associate chief physician, Key Laboratory of Neural Repair in Tianjin, Tianjin 300162, China; Dong Hua-jiang, Ph.D.,School of Precise Instrument and Optoelectronic Engineering, Tianjin University, Tianjin 300072, China
  • About author:Xu Hai-huan, Master, Attending physician, Lecturer, School of Precise Instrument and Optoelectronic Engineering, Tianjin University, Tianjin 300072, China; Department of Dermatology, Affiliated Hospital of Logistics University of People's Armed Police Force, Tianjin 300162, China
  • Supported by:

    the Natural Science Foundation of Tianjin, No. 16JCYBJC27600

摘要:

文章快速阅读:

文题释义:
CD31:
又称为血小板-内皮细胞黏附分子(Platelet endothelial cell adhesion molecule-1,PECAM-1/CD31),分子质量为130 ku,其结构属于免疫球蛋白超家族成员,在清除体内老化的中性粒细胞过程中发挥重要作用。CD31存在于血小板、中性粒细胞、单核细胞和某些类型的T细胞表面,以及内皮细胞间紧密连接处,很可能参与白细胞的迁移、血管生成和整合素的激活。在免疫组化中,CD31主要用于评估血管生成。
干细胞对创伤神经的支持与保护机制:①细胞接触与融合:干细胞将有益基因或蛋白通过细胞间接触或融合传递给临近受损神经细胞,发挥其神经营养和支持作用;②细胞因子的营养作用:利用缺血脑组织的裂解液培养间充质干细胞,发现随着时间延长,培养液中脑源性神经营养因子、神经生长因子、血管内皮生长因子、表皮生长因子、成纤维生长因子和类胰岛素生长因子水平均有明显提高。这些营养因子通过刺激和营养局部神经细胞发挥神经营养作用;③免疫调节作用:干细胞可增高免疫细胞分泌抗炎症因子,增加抗炎或免疫耐受调控T细胞亚群的数量;④促新生血管形成作用:干细胞治疗可以通过诱导血管发生进行脑组织修复。

 

摘要
背景:
脐带间充质干细胞是一种多能干细胞,能够减轻损伤区域的炎性反应,促进微血管再生。
目的:探讨脐带间充质干细胞移植对急性颅脑创伤大鼠脑组织微血管密度的影响。
方法:30只SD大鼠采用随机数字法分为3组:对照组(未损伤组)、脑创伤模型组和细胞移植治疗组,每组10只。采用自由落体方法复制颅脑创伤模型,经脑室途径输注脐带间充质干细胞1.5×106个。细胞移植后24 h进行神经损伤评分。细胞移植后14 d,采用免疫组化法检测受损脑组织附近微血管密度。
结果与结论:①与脑创伤模型组比较,细胞移植治疗组微血管密度升高明显(P < 0.05);②细胞移植治疗组神经损伤评分优于脑创伤模型组(P < 0.05);③结果表明,脐带间充质干细胞移植治疗急性颅脑创伤大鼠,可有效改善脑损伤区域血管重建,促进受损脑组织神经功能恢复。

 

关键词: 干细胞, 脐带脐血干细胞, 脐带间充质干细胞, 脑创伤, 微血管密度, 神经缺损评分, 天津市自然科学基金

Abstract:

BACKGROUND: Umbilical cord mesenchymal stem cells (UC-MSCs) are a kind of pluripotent stem cells capable of relieving inflammation and edema in injured areas, promoting microvascular regeneration and improving wound healing.
OBJECTIVE: To explore the therapeutic effects of UC-MSCs transplantation on acute traumatic brain injury (TBI) in rats and the effect on microvessel density of the rat brain tissue. 
METHODS: Thirty Sprague Dawley rats were randomly divided into three groups, control group, TBI model group and UC-MSCs treatment group (n=10 per group). TBI models were made in the rats by free fall method. US-MSCs (1.5×106) were infused through the cerebral ventricle in the rats. Neurological severity scores were assessed at 24 hours after cell transplantation. The microvessel density in the injured brain tissue was detected using immunohistochemistry method at 14 days after cell transplantation. 
RESULTS AND CONCLUSION: Compared with the TBI model group, the microvessel density value was significantly increased after UC-MSCs transplantation (P < 0.05), and the neurological severity score also became better in the UC-MSCs treatment group (P < 0.05). In summary, UC-MSCs transplantation can effectively improve became vascular remodeling and have a good neuroprotection in acute TBI rats.

 

Key words: Craniocerebral Trauma, Umbilical Cord, Mesenchymal Stem Cell Transplantation, Tissue Engineering

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