Mineralized dermal layer of the Brazilian tree-frog Corythomantis greeningi

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dc.contributor.authorKatchburian, E.
dc.contributor.authorAntoniazzi, M. M.
dc.contributor.authorJared, C.
dc.contributor.authorFaria, F. P.
dc.contributor.authorSantos, H. S.
dc.contributor.authorFreymuller, E.
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionInst Butantan
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2016-01-24T12:31:21Z
dc.date.available2016-01-24T12:31:21Z
dc.date.issued2001-04-01
dc.description.abstractSome species of anuran amphibians possess a calcified dermal layer (the Eberth-Kastschenko layer) located between the stratum spongiosum and the stratum compactum. This layer consists of calcium phosphate deposits, proteoglycans, and glycosaminoglycans. Although regarded as a protective layer against desiccation, a calcium reservoir, or possibly a remnant of a dermal skeleton present in anuran ancestors, very little is known about its origin, structure, and function. Thus, we studied the structure and composition of the mineralized dermal layer of Corythomantis greeningi, a peculiar hylid from the Brazilian semiarid region (caatinga), using conventional and cryosubstitution methods combined with transmission, scanning, and analytical electron microscopy. Results show that the dermal layer consists of dense, closely juxtaposed, globular structures. Although the electron opacity of the globules was variable, depending on the type of preparation, crystal-like inclusions were present in all of them, as confirmed by dark field microscopy. Electron probe X-ray microanalysis showed calcium, phosphorus, and oxygen, and electron diffraction revealed a crystalline structure comparable to that of a hydroxyapatite. (C) 2001 Wiley-Liss, Inc.en
dc.description.affiliationUniversidade Federal de São Paulo, Dept Morphol, BR-04023900 São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Ctr Electron Microscopy, BR-04023900 São Paulo, Brazil
dc.description.affiliationInst Butantan, Cell Biol Lab, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Phys, Electron Microscopy Lab, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Morphol, BR-04023900 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Ctr Electron Microscopy, BR-04023900 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent56-63
dc.identifierhttp://dx.doi.org/10.1002/jmor.1020
dc.identifier.citationJournal of Morphology. New York: Wiley-liss, v. 248, n. 1, p. 56-63, 2001.
dc.identifier.doi10.1002/jmor.1020
dc.identifier.issn0362-2525
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/26515
dc.identifier.wosWOS:000167678100004
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Morphology
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.subjectamphibiaen
dc.subjectskinen
dc.subjectcalcified dermal layeren
dc.subjectCorythomantis greeningien
dc.subjectbiomineralizationen
dc.titleMineralized dermal layer of the Brazilian tree-frog Corythomantis greeningien
dc.typeinfo:eu-repo/semantics/article
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