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Article: Interactions between compound and normal eye projections in dually innervated tectum: A study of optic nerve regeneration in Xenopus

TitleInteractions between compound and normal eye projections in dually innervated tectum: A study of optic nerve regeneration in Xenopus
Authors
Issue Date1981
Citation
Journal Of Embryology And Experimental Morphology, 1981, v. Vol.66, p. 159-174 How to Cite?
AbstractRight compound eyes were formed in Xenopus embryos at tailbud stages by the fusion of two nasal (NN), two temporal (TT) or two ventral (VV) halves. The left eye was kept intact. Two to four weeks after metamorphosis the optic nerve from the intact eye was severed to induce bilateral optic nerve regeneration. The contralateral retinotectal projections from the compound eye and the induced ipsilateral projections from the intact eye to the same (dually innervated tectum were studied by [3H]proline autoradiography and visuotectal mapping from 3 to 6 months after the postmetamorphic surgery. The results showed that the NN, TT and VV projections, in the presence of optic fibres from the intact eye failed to spread across the whole extent of the dually innervated tectum. Unexpectedly the bulk of the regenerating projection from the intact eye was confined to the previously uninnervated parts of the dually innervated tecta, the caudomedial region in TT, the rostrolateral region in NN and the lateral region in VV eye animals. The partial segregation of the two populations of optic fibres in the dually innervated tectum has been taken as a further indication of the role of fibre-fibre and fibre-tectum interactions in retinotectal map formation.
Persistent Identifierhttp://hdl.handle.net/10722/149432
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorStraznicky, Cen_US
dc.contributor.authorTay, Den_US
dc.date.accessioned2012-06-26T05:53:36Z-
dc.date.available2012-06-26T05:53:36Z-
dc.date.issued1981en_US
dc.identifier.citationJournal Of Embryology And Experimental Morphology, 1981, v. Vol.66, p. 159-174en_US
dc.identifier.issn0022-0752en_US
dc.identifier.urihttp://hdl.handle.net/10722/149432-
dc.description.abstractRight compound eyes were formed in Xenopus embryos at tailbud stages by the fusion of two nasal (NN), two temporal (TT) or two ventral (VV) halves. The left eye was kept intact. Two to four weeks after metamorphosis the optic nerve from the intact eye was severed to induce bilateral optic nerve regeneration. The contralateral retinotectal projections from the compound eye and the induced ipsilateral projections from the intact eye to the same (dually innervated tectum were studied by [3H]proline autoradiography and visuotectal mapping from 3 to 6 months after the postmetamorphic surgery. The results showed that the NN, TT and VV projections, in the presence of optic fibres from the intact eye failed to spread across the whole extent of the dually innervated tectum. Unexpectedly the bulk of the regenerating projection from the intact eye was confined to the previously uninnervated parts of the dually innervated tecta, the caudomedial region in TT, the rostrolateral region in NN and the lateral region in VV eye animals. The partial segregation of the two populations of optic fibres in the dually innervated tectum has been taken as a further indication of the role of fibre-fibre and fibre-tectum interactions in retinotectal map formation.en_US
dc.languageengen_US
dc.relation.ispartofJournal of Embryology and Experimental Morphologyen_US
dc.subject.meshAnimalsen_US
dc.subject.meshAutoradiographyen_US
dc.subject.meshEye - Innervationen_US
dc.subject.meshNerve Regenerationen_US
dc.subject.meshOptic Nerve - Embryology - Physiologyen_US
dc.subject.meshSuperior Colliculi - Embryology - Physiologyen_US
dc.subject.meshVisual Pathways - Embryologyen_US
dc.subject.meshXenopus Laevisen_US
dc.titleInteractions between compound and normal eye projections in dually innervated tectum: A study of optic nerve regeneration in Xenopusen_US
dc.typeArticleen_US
dc.identifier.emailTay, D:dkctay@hkucc.hku.hken_US
dc.identifier.authorityTay, D=rp00336en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid7338709en_US
dc.identifier.scopuseid_2-s2.0-0019731683en_US
dc.identifier.volumeVol.66en_US
dc.identifier.spage159en_US
dc.identifier.epage174en_US
dc.identifier.isiWOS:A1981MY85500011-
dc.identifier.scopusauthoridStraznicky, C=7004293883en_US
dc.identifier.scopusauthoridTay, D=7006796825en_US

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