Allogeneic bone marrow stromal cells promote glial-axonal remodeling without immunologic sensitization after stroke in rats - PubMed (original) (raw)
Comparative Study
. 2006 Apr;198(2):313-25.
doi: 10.1016/j.expneurol.2005.11.029. Epub 2006 Feb 7.
Kevin McIntosh, Jieli Chen, Chunling Zhang, Qi Gao, Jade Borneman, Kim Raginski, James Mitchell, Lihong Shen, Jing Zhang, Dunyue Lu, Michael Chopp
Affiliations
- PMID: 16455080
- DOI: 10.1016/j.expneurol.2005.11.029
Comparative Study
Allogeneic bone marrow stromal cells promote glial-axonal remodeling without immunologic sensitization after stroke in rats
Yi Li et al. Exp Neurol. 2006 Apr.
Abstract
We evaluated the effects of allogeneic bone marrow stromal cell treatment of stroke on functional outcome, glial-axonal architecture, and immune reaction. Female Wistar rats were subjected to 2 h of middle cerebral artery occlusion. Rats were injected intravenously with PBS, male allogeneic ACI--or syngeneic Wistar--bone marrow stromal cells at 24 h after ischemia and sacrificed at 28 days. Significant functional recovery was found in both cell-treated groups compared to stroke rats that did not receive BMSCs, but no difference was detected between allogeneic and syngeneic cell-treated rats. No evidence of T cell priming or humoral antibody production to marrow stromal cells was found in recipient rats after treatment with allogeneic cells. Similar numbers of Y-chromosome+ cells were detected in the female rat brains in both groups. Significantly increased thickness of individual axons and myelin, and areas of the corpus callosum and the numbers of white matter bundles in the striatum were detected in the ischemic boundary zone of cell-treated rats compared to stroked rats. The areas of the contralateral corpus callosum significantly increased after cell treatment compared to normal rats. Processes of astrocytes remodeled from hypertrophic star-like to tadpole-like shape and oriented parallel to the ischemic regions after cell treatment. Axonal projections emanating from individual parenchymal neurons exhibited an overall orientation parallel to elongated radial processes of reactive astrocytes of the cell-treated rats. Allogeneic and syngeneic bone marrow stromal cell treatment after stroke in rats improved neurological recovery and enhanced reactive oligodendrocyte and astrocyte related axonal remodeling with no indication of immunologic sensitization in adult rat brain.
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