Linked Life Data

15530870

Source:http://linkedlifedata.com/resource/pubmed/id/15530870

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pubmed-article:15530870pubmed:abstractTextTransplantation of stem cells and immature cells has been reported to ameliorate tissue damage, induce axonal regeneration, and improve locomotion following spinal cord injury. However, unless these cells are pushed down a neuronal lineage, the majority of cells become glia, suggesting that the alterations observed may be potentially glially mediated. Transplantation of glial-restricted precursor (GRP) cells--a precursor cell population restricted to oligodendrocyte and astrocyte lineages--offers a novel way to examine the effects of glial cells on injury processes and repair. This study examines the survival and differentiation of GRP cells, and their ability to modulate the development of the lesion when transplanted immediately after a moderate contusion injury of the rat spinal cord. GRP cells isolated from a transgenic rat that ubiquitously expresses heat-stable human placental alkaline phosphatase (PLAP) were used to unambiguously detect transplanted GRP cells. Following transplantation, some GRP cells differentiated into oligodendrocytes and astrocytes, retaining their differentiation potential after injury. Transplanted GRP cells altered the lesion environment, reducing astrocytic scarring and the expression of inhibitory proteoglycans. Transplanted GRP cells did not induce long-distance regeneration from corticospinal tract (CST) and raphe-spinal axons when compared to control animals. However, GRP cell transplants did alter the morphology of CST axons toward that of growth cones, and CST fibers were found within GRP cell transplants, suggesting that GRP cells may be able to support axonal growth in vivo after injury.lld:pubmed
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pubmed-article:15530870pubmed:dateRevised2010-11-18lld:pubmed
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pubmed-article:15530870pubmed:articleTitleAcute transplantation of glial-restricted precursor cells into spinal cord contusion injuries: survival, differentiation, and effects on lesion environment and axonal regeneration.lld:pubmed
pubmed-article:15530870pubmed:affiliationSTAR Laboratories, The Laboratory for Neural Repair, Department of Neuroscience, The Ohio State University, Columbus, OH 43210, USA.lld:pubmed
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pubmed-article:15530870pubmed:publicationTypeComparative Studylld:pubmed
pubmed-article:15530870pubmed:publicationTypeResearch Support, U.S. Gov't, P.H.S.lld:pubmed
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