期刊
NEUROSURGERY
卷 57, 期 5, 页码 1026-1030出版社
OXFORD UNIV PRESS INC
DOI: 10.1227/01.NEU.0000181369.76323.50
关键词
functional improvement; human marrow stromal cells; traumatic brain injury
资金
- NINDS NIH HHS [P01 NS042345-01A20002, P01 NS042345, R01 NS042259-04] Funding Source: Medline
OBJECTIVE: This study was designed to investigate the effects of human bone marrow stromal cell (hMSC) administration in rats for 3 months after traumatic brain injury (TBI). METHODS: Adult male Wistar rats (n = 60) were injured with controlled cortical impact and divided into four groups. The three treatment groups (n = 10 each) were injected with 2 X 10(6), 4 X 10(6), and 8 X 10(6) hMSCs, respectively, intravenously, whereas the control group (n = 30) received phosphate-buffered saline. All injections were performed 1 day after injury into the tail veins of rats. Neurological functional evaluation of animals was performed before and after injury by use of Neurological Severity Scores. Animals were sacrificed 3 months after TBI, and brain sections were stained by immunohistochernistry. RESULTS: Statistically significant improvement in functional outcome was observed in all three treatment groups compared with control values (P < 0.05). This benefit was visible 14 days after TBI and persisted until 3 months (end of trial). There was no difference in functional outcome among the three treatment groups. Histological analysis showed that hMSCs were present in the lesion boundary zone at 3 months with all three doses tested. CONCLUSION: hMSCs injected in rats after TBI survive until 3 months and provide long-lasting functional benefit. Functional improvement may be attributed to stimulation of endogenous neurorestorative functions such as neurogenesis and synaptogenesis.
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