A specific brain tract guides follower growth cones in two regions of the zebrafish brain
dc.contributor.author | Chitnis, Ajay B. | en_US |
dc.contributor.author | Patel, Chetan K. | en_US |
dc.contributor.author | Kim, Stennis | en_US |
dc.contributor.author | Kuwada, John Y. | en_US |
dc.date.accessioned | 2007-04-06T18:25:22Z | |
dc.date.available | 2007-04-06T18:25:22Z | |
dc.date.issued | 1992-09 | en_US |
dc.identifier.citation | Chitnis, Ajay B.; Patel, Chetan K.; Kim, Stennis; Kuwada, John Y. (1992)."A specific brain tract guides follower growth cones in two regions of the zebrafish brain." Journal of Neurobiology 23(7): 845-854. <http://hdl.handle.net/2027.42/50081> | en_US |
dc.identifier.issn | 0022-3034 | en_US |
dc.identifier.issn | 1097-4695 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/50081 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=1431848&dopt=citation | en_US |
dc.description.abstract | Neurons of the nucleus of the posterior commissure (nuc PC), an identifiable cluster of neurons in the embryonic zebrafish brain, project growth cones ventrally along the posterior commissure to the anterior tegmentum where the PC intersects two longitudinal tracts, the tract of the postoptic commissure (TPOC) and the medial longitudinal fasciculus (MLF). Once at the intersection, nuc PC growth cones turn posteriorly onto the TPOC in the dorsal tegmentum and follow it to the hindbrain. Previously we showed that in the absence of the TPOC, nuc PC growth cones often extended along aberrant path ways suggesting that fasciculation, that is, contact with TPOC axons is an important factor in guiding growth cones along their normal pathway. However, a significant number of nuc PC growth cones also followed their normal pathway suggesting that cues associated with the dorsolateral tegmentum, independent of the TPOC, can also guide nuc PC growth cones. We have now confirmed using electron microscopy that nuc PC growth cones fasciculate with axons in the TPOC. In the absence of the TPOC, the nuc PC growth cones that extend along their normal pathway do so in contact with dorsolateral neuroepithelial cells. This suggests that cues associated with these cells can also guide the nuc PC growth cones. Furthermore, in the absence of the TPOC axons, these growth cones now inappropriately turn onto axons that normally intersect the TPOC near the border of the midbrain and hindbrain, that is, at a second intersection of tracts. This suggests that fasciculation with TPOC axons may also guide nuc PC growth cones in this second region of the brain. © 1992 John Wiley & Sons, Inc. | en_US |
dc.format.extent | 1024178 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Wiley Subscription Services, Inc., A Wiley Company | en_US |
dc.subject.other | Life and Medical Sciences | en_US |
dc.subject.other | Neuroscience, Neurology and Psychiatry | en_US |
dc.title | A specific brain tract guides follower growth cones in two regions of the zebrafish brain | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Neurosciences | en_US |
dc.subject.hlbsecondlevel | Psychology | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Social Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Neuroscience Program, University of Michigan, Ann Arbor, Michigan 48109-1048 | en_US |
dc.contributor.affiliationum | Department of Biology, University of Michigan, Ann Arbor, Michigan 48109-1048 | en_US |
dc.contributor.affiliationum | Department of Biology, University of Michigan, Ann Arbor, Michigan 48109-1048 | en_US |
dc.contributor.affiliationum | Neuroscience Program, University of Michigan, Ann Arbor, Michigan 48109-1048 ; Department of Biology, University of Michigan, Ann Arbor, Michigan 48109-1048 ; Neuroscience Program, Department of Biology, University of Michigan, Ann Arbor, Michigan 48109-1048 | en_US |
dc.identifier.pmid | 1431848 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/50081/1/480230706_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/neu.480230706 | en_US |
dc.identifier.source | Journal of Neurobiology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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