Abstract
Transplantation of adipose-derived stem cells (ASCs) is one of the possible therapeutic tools for ischemic damage. In this study, we observed the effects of ASCs against ischemic damage in the ventral horn of L5–6 levels in the rabbit spinal cord. ASCs were isolated from rabbits, and cell type was confirmed by flow cytometry analysis, labeling with CM-DiI dye and differentiation into adipocytes in adipogenesis differentiation medium. ASCs were administered intrathecally into recipient rabbits (2×105) immediately after reperfusion following a 15-min aortic artery occlusion in the subrenal region. Transplantation of ASCs significantly improved functions of the hindlimb and morphology of the ventral horn of spinal cord although CM-DiI-labeled ASCs were not observed in the spinal cord parenchyma. In addition, transplantation of ASCs significantly increased brain-derived neurotrophic factor (BDNF) levels at 72h after ischemia/reperfusion. These results suggest that transplantation of ASCs prevents motor neurons from spinal ischemic damage and reactive gliosis by increasing neurotrophic factors such as BDNF in the spinal cord.
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