Identification and localization of an immunoreactiveAMPA-type glutamate receptor subunit (GluR4) with respect to identified photoreceptor synapses in the outer plexiform layer of goldfish retina
dc.contributor.author | Schultz, K. | en_US |
dc.contributor.author | Goldman, Daniel J. | en_US |
dc.contributor.author | Ohtsuka, T. | en_US |
dc.contributor.author | Hirano, J. | en_US |
dc.contributor.author | Stell, W. K. | en_US |
dc.date.accessioned | 2006-09-11T18:58:53Z | |
dc.date.available | 2006-09-11T18:58:53Z | |
dc.date.issued | 1997-10 | en_US |
dc.identifier.citation | Schultz, K.; Goldman, D. J.; Ohtsuka, T.; Hirano, J.; Stell, W. K.; (1997). "Identification and localization of an immunoreactiveAMPA-type glutamate receptor subunit (GluR4) with respect to identified photoreceptor synapses in the outer plexiform layer of goldfish retina." Journal of Neurocytology 26(10): 651-666. <http://hdl.handle.net/2027.42/47440> | en_US |
dc.identifier.issn | 0300-4864 | en_US |
dc.identifier.issn | 1573-7381 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47440 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=9368879&dopt=citation | en_US |
dc.description.abstract | L-glutamate, the main excitatory synaptic transmitter in the retina, is released from photoreceptors and evokes responses in second-order retinal neurons (horizontal, bipolar cells) which utilize both ionotropic and metabotropic types of glutamate receptors. In the present study, to elucidate the functional roles of glutamate receptors in synaptic transmission, we have identified a specific ionotropic receptor subunit (GluR4) and determined its localization with respect to photoreceptor cells in the outer plexiform layer of the goldfish retina by light and pre-embedding electron-microscopical immunocytochemistry. We screened antisera to mammalian AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate)-preferring ionotropic glutamate receptors (GluR 1–4) of goldfish retina by light- and electron-microscopical immunocytochemistry. Only immunoreactive (IR) GluR4 was found in discrete clusters in the outer plexiform layer. The cones contacted in this manner were identified as long-wavelength (“red”) and intermediate-wavelength (“green”) cones, which were strongly immunoreactive to monoclonal antibody FRet 43 and antisera to goldfish red and green-cone opsins; and short-wavelength (“blue”) cones, which were weakly immunoreactive to FRet 43 but strongly immunoreactive with antiserum to blue-cone opsin. Immunoblots of goldfish retinal homogenate with anti-GluR4 revealed a single protein at Mr=110 kDa. Preadsorption of GluR4 antiserum with either the immunizing rat peptide, or its goldfish homolog, reduced or abolished staining in retinal sections and blots. Therefore, we have detected and localized genuine goldfish GluR4 in the outer plexiform layer of the goldfish retina. We characterized contacts between photoreceptor cells and GluR4-IR second-order neurons in the electron microscope. IR-GluR4 was localized to invaginating central dendrites of triads in ribbon synapses of red cones, semi-invaginating dendrites in other cones and rods, and dendrites making wide-cleft basal junctions in rods and cones; the GluR4-IR structures are best identified as dendrites of OFF-bipolar cells. The results of our studies indicate that in goldfish retina GluR4-expressing neurons are postsynaptic to all types of photoreceptors and that transmission from photoreceptors to OFF-bipolars is mediated at least in part by AMPA-sensitive receptors containing GluR4 subunits. | en_US |
dc.format.extent | 1360866 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Kluwer Academic Publishers; Chapman and Hall ; Springer Science+Business Media | en_US |
dc.subject.other | Biomedicine | en_US |
dc.subject.other | Neurosciences | en_US |
dc.subject.other | Neuroradiology | en_US |
dc.title | Identification and localization of an immunoreactiveAMPA-type glutamate receptor subunit (GluR4) with respect to identified photoreceptor synapses in the outer plexiform layer of goldfish retina | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | 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 | Mental Health Research Institute and Department of Biological Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA | en_US |
dc.contributor.affiliationother | Department of Neurobiology, FB7, University of Oldenburg, P.O. Box 2503, 26111, Oldenburg, Germany | en_US |
dc.contributor.affiliationother | Department of Biology, Toho University, Tokyo | en_US |
dc.contributor.affiliationother | International Marine Centre, Lungomare Eleonora d'Arborea, 22, 09072, Torregrande Oristano, Italy | en_US |
dc.contributor.affiliationother | Lions' Sight Centre, Departments of Anatomy and SurgeryOphthalmology, and Neuroscience Research Group, University of Calgary Faculty of Medicine, 3330 Hospital Drive NW, Calgary, Alberta, Canada, T2N 4NI | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.identifier.pmid | 9368879 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47440/1/11068_2004_Article_174105.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1023/A:1018597811439 | en_US |
dc.identifier.source | Journal of Neurocytology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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