中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (25): 4059-4064.doi: 10.3969/j.issn.2095-4344.0928

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

左心室移植人脐血单个核细胞治疗大鼠脑出血的microPET-CT评价及机制

魏林洹1,姚星宇2,张国华3,杨丽敏4,李剑波3,刘 婕3,靳 娜1,段 瑞1   

  1. 1内蒙古医科大学,内蒙古自治区呼和浩特市 010059;2呼伦贝尔市中蒙医院,内蒙古自治区呼伦贝尔市 021400;3内蒙古医科大学附属医院,内蒙古自治区呼和浩特市 010010;4内蒙古医科大学基础医学院病原微生物与免疫实验中心,内蒙古自治区呼和浩特市 010010
  • 修回日期:2018-03-28 出版日期:2018-09-08 发布日期:2018-09-08
  • 通讯作者: 张国华,主任医师,内蒙古医科大学附属医院,内蒙古自治区呼和浩特市 010010
  • 作者简介:魏林洹,女,1991年生,内蒙古自治区巴彦淖尔市人,汉族,内蒙古医科大学在读硕士,主要从事脑血管病方向研究。
  • 基金资助:

    国家自然科学基金项目(81360189)

Left ventricular transplantation of human umbilical cord blood mononuclear cells in the treatment of cerebral hemorrhage in rats: micro PET-CT evaluation and therapeutic mechanism

Wei Lin-huan1, Yao Xing-yu2, Zhang Guo-hua3, Yang Li-min4, Li Jian-bo3, Liu Jie3, Jin Na1, Duan Rui1   

  1. 1Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China; 2Hulunbeier Zhongmeng Hospital, Hulunbeier 021400, Inner Mongolia Autonomous Region, China; 3Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010010, Inner Mongolia Autonomous Region, China; 4Experimental Center for Pathogenic Microorganisms and Immunity, Basic Medical School of Inner Mongolia Medical University, Hohhot 010010, Inner Mongolia Autonomous Region, China
  • Revised:2018-03-28 Online:2018-09-08 Published:2018-09-08
  • Contact: Zhang Guo-hua, Chief physician, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010010, Inner Mongolia Autonomous Region, China
  • About author:Wei Lin-huan, Master candidate, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia Autonomous Region, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81360189

摘要:

文章快速阅读:

文题释义:
人脐血单个核细胞:
来源于人脐血细胞,其中含有多种细胞成分,具有来源丰富、易于采集及保存、低免疫原性与移植耐受性好等优点,成为脑出血后细胞移植治疗的良好选择。然而脐血单个核细胞的远期效果和具体的作用机制尚不完全清楚,最佳的移植途径、移植细胞数量、移植时间、安全性等问题尚在研究中。
micro PET-CT:是一种新兴代的动物实验仪器,其探头环直径缩小到12 cm,能较清楚而敏感地显示大鼠脑正常结构及脑出血大鼠颅内血肿、血肿周围组织的代谢变化。将PET与CT完美融为一体,在大鼠静脉造影后显像,通过葡萄糖代谢变化反映脑内血肿及周边组织的情况,又结合了专业的micro PET-CT图像分析软件,使大鼠脑出血后颅内血肿的研究更加明确。

 

摘要
背景:
近年来,出现了针对脑出血的新型干细胞移植疗法,但对于人脐血单个核细胞的研究还比较少,以micro PET-CT评价其效果的研究更为稀少。
目的:通过Longa评分、micro PET-CT评价人脐血单个核细胞经左心室途径移植治疗大鼠脑出血模型的效果并探讨其部分治疗机制。
方法:以二次注血/退针法制作大鼠脑出血模型,实验组大鼠脑出血造模成功后经左心室移植人脐血单个核细胞,对照组大鼠脑出血后自然转归,分别于移植前及移植后3,7,14,21 d对两组大鼠进行Longa5级评分、micro PET-CT图像分析,ELISA法测定脑匀浆中血管紧张素1水平。
结果与结论:①实验组及对照组组内各时间点Longa5级评分均随时间变化逐渐降低(P < 0.05)。实验组较对照组Longa5级评分降低更明显(P < 0.05);②移植后第7,14,21天,实验组及对照组血肿中心、血肿周围代谢(SUV%)水平均逐渐升高(P < 0.05)。实验组较对照组血肿中心、血肿周围代谢更高(P < 0.05);③移植后第7,14,21天,实验组及对照组血肿及周围体积逐渐减小(P < 0.05)。实验组较对照组血肿及周围体积更小(P < 0.05);④对照组组内各时间点血管紧张素1水平随时间变化逐渐升高(P < 0.05),实验组组内各时间点血管紧张素1水平逐渐升高至移植后14 d达峰值,移植后21 d又下降(P < 0.05)。实验组较对照组血管紧张素1水平更高(P < 0.05);⑤结果表明,经左心室途径移植人脐血单个核细胞能够改善脑出血大鼠的神经功能,促进脑内血肿体积减小及血肿区代谢恢复,增高脑内血管紧张素1表达水平,这提示人脐血单个核细胞移植可能通过调节血管生成过程而促进脑出血损伤区的修复。

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID: 0000-0003-0143-4727(魏林洹)

关键词: 人脐血单个核细胞, 脑出血, 左心室移植, micro PET-CT, 血管紧张素1, 神经功能, 干细胞, 国家自然科学基金

Abstract:

BACKGROUND: In recent years, new stem cell transplantation therapies for cerebral hemorrhage have emerged, but little is reported on human umbilical cord blood mononuclear cells (HUCB-MNCs), especially on micro PET-CT evaluation of HUCB-MNCs effects.
OBJECTIVE: To evaluate the therapeutic effect of HUCB-MNCs in a rat model of cerebral hemorrhage by Longa and micro PET-CT and to explore the therapeutic mechanism.
METHODS: Models of cerebral hemorrhage were established in rats using secondary blood injection/needle retraction method. The rats in the experimental group were treated with HUCB-MNCs via left ventricular transplantation, and those in the control group received no treatment. Before and after transplantation (3, 7, 14, 21 days), the rats in the two groups were evaluated using Longa 5 scores and micro PET-CT images. ELISA was used to detect the level of angiotensin 1 in the brain homogenate.
RESULTS AND CONCLUSION: Longa 5 scores in the two groups were gradually decreased with time (P < 0.05). Compared with the control group, the Longa 5 scores in the experimental group decreased more significantly (P < 0.05). The standard absorption value (SUV%) in the center of hematoma and perihematomal region increased gradually in the two groups at 7, 14, 21 days after transplantation, but it was significantly higher in the experimental group than the control group (P < 0.05). The volume of hematoma and surrounding tissues was gradually reduced in the two groups, especially in the experimental group, at 7, 14, 21 days after transplantation (P < 0.05). The level of angiotensin 1 in the control group increased gradually with time (P < 0.05), while the level of angiotensin 1 in the experimental group gradually increased, peaked at 14 days and then reduced at 21 days after transplantation (P < 0.05). The level of angiotensin 1 was higher in the experimental group than the control group (P < 0.05). Overall, these findings reveal that HUCB-MNCs via left ventricular transplantation can improve neurologic function of rats, reduce hematoma, recover hematoma metabolism, and increase the level of angiotensin 1 in the rat brain, indicating that HUCB-MNCs transplantation can promote the repair of cerebral hemorrhage through neo-angiogenesis regulation.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Cerebral Hemorrhage, Cord Blood Stem Cell Transplantation, Tissue Engineering

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