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Notochord is essential for oligodendrocyte development in Xenopus spinal cord
Author(s) -
Maier C. Eberhardt,
Miller Robert H.
Publication year - 1997
Publication title -
journal of neuroscience research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.72
H-Index - 160
eISSN - 1097-4547
pISSN - 0360-4012
DOI - 10.1002/(sici)1097-4547(19970215)47:4<361::aid-jnr1>3.0.co;2-c
Subject(s) - notochord , spinal cord , anatomy , oligodendrocyte , biology , xenopus , white matter , neuroscience , central nervous system , embryogenesis , embryo , microbiology and biotechnology , medicine , myelin , genetics , radiology , gene , magnetic resonance imaging
Oligodendrocyte precursors originate in the ventral ventricular zone of the developing spinal cord. To examine whether the notochord is essential for the development of oligodendrocytes in Xenopus spinal cord the notochord was prevented from forming, ablated, or transplanted during early stages of development. Differentiated oligodendrocytes did not appear in spinal cord regions lacking a notochord in animals in which notochord failed to develop after UV irradiation at the one‐cell stage. Similarly, differentiated oligodendrocytes were not detected in the spinal cord adjacent to the site of segmental notochord ablation at embryonic or larval stages. Transplantation of an additional notochord dorsal to the spinal cord induced the premature appearance of differentiated oligodendrocytes in adjacent lateral and dorsal spinal cord white matter. These results indicate that the development of Xenopus spinal cord oligodendrocytes is dependent on local influences from the notochord and suggest that the notochord is essential for oligodendrocyte development in Xenopus spinal cord. J. Neurosci. Res. 47:361–371, 1997. © 1997 Wiley‐Liss, Inc.

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