Apoptosis and testicular alterations in albino rats treated with etoposide during the prepubertal phase

Página do item simplificado
dc.contributor.authorStumpp, Taiza [UNIFESP]
dc.contributor.authorSasso-Cerri, Estela [UNIFESP]
dc.contributor.authorFreymüller-Haapalainen, Edna [UNIFESP]
dc.contributor.authorMiraglia, Sandra Maria [UNIFESP]
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2016-01-24T12:37:13Z
dc.date.available2016-01-24T12:37:13Z
dc.date.issued2004-07-01
dc.description.abstractEtoposide is a podophyllotoxin semiderivative that is used in a variety of chemotherapy treatments, including therapy for children tumors. This drug promotes the formation of a ternary DNA-topoisomerase II-etoposide complex that triggers apoptosis. the purpose of this work was to analyze the occurrence of apoptosis in the seminiferous epithelium of prepubertal, pubertal, and adult rats treated with 10, 20, and 40 mg/Kg of etoposide during the prepubertal phase, as well as the role of apoptosis in etoposide-induced testicular damage. the rat testes were fixed in Bouin's liquid, and the apoptotic cells were quantified by means of the hematoxylin and eosin (H&E) technique (all groups) and the terminal dUTP nick end labeling (TUNEL) method (prepubertal groups only). the results obtained from both the H&E and TUNEL methods showed an increased frequency of apoptosis in the seminiferous epithelium of treated animals, except for the subgroup that received the 10-mg/Kg dose and was sacrificed 12 hr after the treatment and for the etoposide-treated pubertal group, that did not show cells suggesting apoptosis during H&E analysis. the labeled cells were mainly primary spermatocytes and differentiated spermatogonia. the prepubertal rats showed an etoposide-dose-dependent diminution of differentiated spermatogonia. Etoposide treatment during the prepubertal phase increases the frequency of apoptosis in the seminiferous epithelium, and causes serious harm to male fertility. (C) 2004 Wiley-Liss, Inc.en
dc.description.affiliationUniversidade Federal de São Paulo, Dept Morphol, Lab Embryol, São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Ctr Electron Microscopy, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Morphol, Lab Embryol, São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Ctr Electron Microscopy, São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent611-622
dc.identifierhttp://dx.doi.org/10.1002/ar.a.20045
dc.identifier.citationAnatomical Record Part A-discoveries in Molecular Cellular and Evolutionary Biology. Hoboken: Wiley-liss, v. 279A, n. 1, p. 611-622, 2004.
dc.identifier.doi10.1002/ar.a.20045
dc.identifier.issn0003-276X
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/27797
dc.identifier.wosWOS:000222466000005
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofAnatomical Record Part A-discoveries in Molecular Cellular and Evolutionary Biology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.subjecttestisen
dc.subjectetoposideen
dc.subjectapoptosisen
dc.subjectraten
dc.subjectspermatogenesisen
dc.titleApoptosis and testicular alterations in albino rats treated with etoposide during the prepubertal phaseen
dc.typeinfo:eu-repo/semantics/article
Arquivos
Coleções
Em verificação - Geral