Coexpression of cytokeratin and vimentin in mice trophoblastic giant cells

Coexpression of cytokeratin and vimentin in mice trophoblastic giant cells

Autor Souza, P. C. de Google Scholar
Katz, S. G. Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Trophoblastic giant cells reach their maximum size and exhibit a conspicuous synthetic and invasive activity during mouse placentation, the cytoskeleton, given the complex functions of the cells, shows a well-developed network of intermediate filament proteins. Immunohistochemistry combined with confocal and conventional immunofluorescence studies of intermediate filaments proteins cytokeratin and vimentin were performed in mice trophoblastic giant cells on days 9-11 of pregnancy. Specimens were fixed in phosphate-buffered formaldehyde and tissues were processed for routine paraffin embedding. Trophoblastic giant cells from antimesometrial, lateral or mesometrial uterine regions, through days 9-11 of pregnancy, expressed the same staining with both immunoperoxidase and immunofluorescent techniques. Cytokeratin filamentous structures were intensely immunoreactive and were detected throughout the cells cytoplasm; a few cells exhibited strongest fluorescence in the peripheral cytoplasm, Vimentin-positive staining was often distributed throughout the cells cytoplasm, most frequently and more intensely in the peripheral region; in some cells, it was present only in the peripheral regions. It is probable that expression of vimentin in midpregnancy trophoblastic giant cells may be associated with the rapid and conspicuous increase in size and synthetic activity of the cells and also with phagocytosis of degraded materials and invasion of decidual tissue. (C) 2001 Harcourt Publishers Ltd.
Palavra-chave trophoblast
cytoskeleton
vimentin
cytokeratin
immunohistochemistry
mice
Idioma Inglês
Data de publicação 2001-02-01
Publicado em Tissue & Cell. Edinburgh: Churchill Livingstone, v. 33, n. 1, p. 40-45, 2001.
ISSN 0040-8166 (Sherpa/Romeo, fator de impacto)
Publicador Churchill Livingstone
Extensão 40-45
Fonte http://dx.doi.org/10.1054/tice.2000.0148
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000167535700005
Endereço permanente http://repositorio.unifesp.br/handle/11600/26485

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