Abstract
To evaluate the effect of umbilical cord derived mesenchymal stem cells (UC-MSCs) transplantation on traumatic brain injury (TBI). UC-MSCs were isolated from human umbilical cord and TBI rat model was constructed. 30 male SD rats were randomly divided into 3 groups: control group, TBI group and MSCs transplantation group. Rats in MSCs group received the injection of a total of 1.5 Ć- 106 MSCs (25 Ī¼l) via ventricle at operated ventricular coordinates (0 at bregma, 1.5 mm at lateral, 1.1 mm at behind, 4.5 mm in depth). 80% confluence of cells was formed from tissue at day 10 and the amount of CD90, CD73, CD105 positive cells increased correspondingly. In TBI model, clear hyperemia, edema and obvious infiltration of inflammatory cells in brain tissue were found. However, the manifestations were alleviated after the treatment of MSCs. In MSCs group, GFP in the brain tissue and the area around the vessels were found after the injection, while the expression levels of micro-vessel density (MVD), brain-derived neurotrophic factor (BDNF) and glial fibrillary acidic protein (GFAP) were elevated. UC-MSCs transplantation for treatment of acute TBI could effectively reduce the injury and improve the vascular reconstruction.
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