Continued search for the cellular signals that regulate regeneration of dopaminergic neurons in goldfish retina
dc.contributor.author | Braisted, Janet E. | en_US |
dc.contributor.author | Raymond, Pamela A. | en_US |
dc.date.accessioned | 2006-04-10T15:28:10Z | |
dc.date.available | 2006-04-10T15:28:10Z | |
dc.date.issued | 1993-12-17 | en_US |
dc.identifier.citation | Braisted, Janet E., Raymond, Pamela A. (1993/12/17)."Continued search for the cellular signals that regulate regeneration of dopaminergic neurons in goldfish retina." Developmental Brain Research 76(2): 221-232. <http://hdl.handle.net/2027.42/30390> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6SYW-485CY0D-2M/2/8c5b058cbb0a849dc1bf2995225d0f36 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/30390 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=8149588&dopt=citation | en_US |
dc.description.abstract | Intraocular injections of low doses (0.7-1.4 mM estimated intraocular concentration) of 6-hydroxydopamine (6OHDA) selectively destroy dopaminergic neurons in the inner nuclear layer (INL) of goldfish retina, and they never regenerate. However, injection of a higher dose of 6OHDA (2.9 mM) destroys > 30% (but not all) of the cells in both the INL and the outer nuclear layer (ONL), but within 3 weeks, neurons in both the INL (including dopaminergic neurons) and the ONL regenerate. We hypothesize that the regenerated neurons derive from mitotic rod precursors in the ONL and that damage to the surrounding micro-environment (i.e. destruction of photoreceptors) triggers the regenerative response. To directly test this hypothesis, we selectively ablated > 99% of dopaminergic neurons (with low doses of 60HDA) and up to 55% of rod photoreceptors (with tunicamycin), and asked whether the dopaminergic neurons regenerated, as evidenced by double immunolabeling with anti-tyrosine hydroxylase and anti-bromodeoxyuridine. After 38 days, the number of bromodeoxyuridine-immunoreactive rod nuclei was increased 2.4-fold compared to controls, but no regenerated dopaminergic neurons were found. These data suggest that although the rate of rod production increases, rod precursors do not alter their normal pathway of development to replace dopaminergic neurons in the INL when damage to the ONL is limited to destruction of rods. | en_US |
dc.format.extent | 1127347 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Continued search for the cellular signals that regulate regeneration of dopaminergic neurons in goldfish retina | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbsecondlevel | Psychology | en_US |
dc.subject.hlbsecondlevel | Neurosciences | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Internal Medicine and Specialties | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbtoplevel | Social Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Anatomy and Cell Biology, 4607 Medical Science II, University of Michigan, Ann Arbor, MI 48109-0616, USA | en_US |
dc.contributor.affiliationum | Department of Anatomy and Cell Biology, 4607 Medical Science II, University of Michigan, Ann Arbor, MI 48109-0616, USA | en_US |
dc.identifier.pmid | 8149588 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/30390/1/0000008.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0165-3806(93)90210-2 | en_US |
dc.identifier.source | Developmental Brain Research | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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