期刊
EXPERIMENTAL NEUROLOGY
卷 209, 期 2, 页码 353-367出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.expneurol.2007.06.011
关键词
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Olfactory ensheathing cells (OECs) are unique glia found only in the olfactory system that retain exceptional plasticity, and support olfactory neurogenesis and the re-targeting across the PNS:CNS boundary in the olfactory system. Because they are also relatively accessible in an adult rodent or human, OECs have become a prime candidate for cell-mediated repair following a variety of CNS lesions. A number of different labs across the world have applied OECs prepared in many different ways in several different acute and chronic models of rodent SCI, some of which have suggested surprising degrees of functional recovery. OECs can stimulate tissue sparing and neuroprotection, enhance outgrowth of both intact and lesioned axons (to different degrees), activate angiogenesis, change the response status of endogenous glia after lesion and remyelinate axons after a range of demyelinating insults. Their ability to stimulate regeneration in specific tracts is, however, limited. Despite this, the ongoing clinical use of cell preparations containing OECs has proceeded as a therapeutic approach for human spinal cord injury (SCI). Here, we review the current status of OEC research in SCI, and focus on potential mechanisms for OECs in the SCI repair response that may help to explain the biological reasons underlying the wide variation of results obtained in this promising, yet contentious, field. (C) 2007 Elsevier Inc. All rights reserved.
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