Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (28): 4531-4536.doi: 10.3969/j.issn.2095-4344.2015.28.019

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Bone marrow mononuclear cell transplantation for repair of traumatic brain injury via different approaches

Zhao Nan1, Liu Jun1, Li Jun-yan1, Ma Gang1, Li Jin1, Wang Ting-hua2, Su Ping1   

  1. 1Department of Neurosurgery, the First People’s Hospital of Kunming, Kunming 650011, Yunnan Province, China;
    2Institute of Neuroscience, Kunming Medical University, Kunming 650500, Yunnan Province, China
  • Online:2015-07-02 Published:2015-07-02
  • Contact: Su Ping, Chief physician, Department of Neurosurgery, the First People’s Hospital of Kunming, Kunming 650011, Yunnan Province, China
  • About author:Zhao Nan, M.D., Associate chief physician, Department of Neurosurgery, the First People’s Hospital of Kunming, Kunming 650011, Yunnan Province, China
  • Supported by:

    a grant from the Applied Basic Research Program of Yunnan Province, China, No. 2008CD195-1; Science and Technology Program of Kunming City, No. 08S100304-5

Abstract:

 BACKGROUND: There are several routes for stem cell transplantation; however, it is still unable to determine which one is the best. As for the different individuals with brain injury, the type of transplanted cells, transplantation route and time will affect the therapeutic effects.

OBJECTIVE: To investigate the effect of bone marrow mononuclear cells transplanted via different approaches on neurological function of rats with traumatic brain injury.
METHODS: Bone marrow mononuclear cells of rats were administered gradient centrifugation with Ficoll lymphocyte separation medium, and were labeled with CFDA-SE in vitro as standby. Rat models of traumatic brain injury were established by the method of freefall. After successful establishment of rat models, bone marrow mononuclear cells labeled with CFDA-SE were immediately transplanted into rats via injured area, lateral ventricle and internal carotid artery. One control group was designated for each transplantation route (bone marrow mononuclear cells were replaced with the same volume of DMEM). The degree of neurological deficits was evaluated using mNSS scores at different time points after treatment. The brain tissue was harvested after the last neurobehavioral evaluation. The survival and migration of bone marrow mononuclear cells in the injured area were observed under an inverted fluorescent microscope.

RESULTS AND CONCLUSION: At 7, 10, and 14 days after treatment, the mNSS scores of rats in all groups were all lower than those at 1 and 3 days (P < 0.05). At 7 and 10 days, the mNSS scores of rats in the internal carotid artery transplantation group were significantly lower than those in the control group (P < 0.05). At 14 days after treatment, the number of fluorescence-labeled cells of rats in the internal carotid artery transplantation group was greater than that in the other groups (P < 0.05) and these labeled cells were widely distributed. The results demonstrate that the neurological function of rats can be improved by transplanting bone marrow mononuclear cells via the internal carotid artery, and a large number of transplanted cells can survive and migrate in the injured area. 

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: Bone Marrow Cells, Brain Injuries, Cell Transplantation

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