Ultrastructure of the adhesion of bacteria to the epithelial cell membrane of three-day postnatal rat tongue mucosa: a transmission and high-resolution scanning electron microscopic study
dc.contributor.author | Watanabe, Ii-sei | |
dc.contributor.author | Ogawa, Koichi | |
dc.contributor.author | Silva, Marcelo Cavenaghi Pereira da [UNIFESP] | |
dc.contributor.author | Motoyama, Aracy Akiko | |
dc.contributor.author | Kado, Eduardo Shigueaki | |
dc.contributor.author | Lopes, Ruberval Armando | |
dc.contributor.institution | University of São Paulo Institute of Biomedical Sciences Department of Anatomy | |
dc.contributor.institution | Fukuoka University Department of Anatomy | |
dc.contributor.institution | Universidade Federal de São Paulo (UNIFESP) | |
dc.contributor.institution | University of São Paulo School of Dentistry of Ribeirão Preto Department of Morphology and Stomatology | |
dc.date.accessioned | 2015-06-14T13:36:39Z | |
dc.date.available | 2015-06-14T13:36:39Z | |
dc.date.issued | 2007-01-01 | |
dc.description.abstract | Togue mucosa surface of 3-day postnatal rats was examined under transmission electron microscopy (TEM) and high-resolution scanning electron microscopy (HRSEM). For HRSEM analysis, the specimens were fixed in the same solution for 24 h, postfixed in 2% osmiun tetroxide, critical-point dried and coated with platinum-palladium. For TEM analysis, the specimens were fixed using modified Karnovsky solution and embedded in Spurr resin. The results revealed the presence of numerous microplicae in the membrane surface of keratinized epithelial cells to which groups of bacteria were attached. These bacteria were staphylococcus and coccus organized either in rows or at random, which were visualized in three-dimensional HRSEM images. At high magnification, the TEM images revealed the adhesion of bacteria to the cell membrane through numerous filamentous structures comprising the glycocalyx. The fine fibrillar structures rising from each bacterium and from cell membrane were clearly seen. These characteristics on bacteria structure may be used for future control or prevention of bacterial diseases and for installation of the oral native flora. | en |
dc.description.abstract | A superfície lingual de ratos de três dias de idade foi examinada em microscópia eletrônica de transmissão (MET) e em microscópia eletrônica varredura de alta resolução (MEVAR). Para o método de MEVAR, os espécimes foram fixados na mesma solução por 24 h, pós fixados em solução de tetróxido de ósmio a 2%, secos em ponto crítico e cobertos com platina- paládio. Para análise em MET, os espécimes foram fixados utilizando-se solução de Karnovsky modificada e emblocadas em resina Spurr. Os resultados mostraram a presença de numerosas micropregas na membrana superficial das células epiteliais queratinizadas, nas quais estavam aderidos grupos de bactérias. Estas bactérias eram estafilococos e cocos, organizados em fileiras ou a esmo, e puderam ser observadas em imagens tri-dimensionais em MEVAR. Em maiores aumentos, as imagens em MET revelaram a adesão de bactérias nas células por meio de numerosas estruturas filamentares compondo o glicocálice. As delicadas estruturas filamentares na periferia das bactérias e das células foram nitidamente identificadas. Estas características da estrutura bacteriana podem ser utilizadas, no futuro, para controle e prevenção de doenças bacteriana, bem como para a instalação da flora oral nativa. | pt |
dc.description.affiliation | University of São Paulo Institute of Biomedical Sciences Department of Anatomy | |
dc.description.affiliation | Fukuoka University Department of Anatomy | |
dc.description.affiliation | Federal University of São Paulo Department of Morphology | |
dc.description.affiliation | University of São Paulo School of Dentistry of Ribeirão Preto Department of Morphology and Stomatology | |
dc.description.affiliationUnifesp | UNIFESP, Department of Morphology | |
dc.description.source | SciELO | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.format.extent | 320-323 | |
dc.identifier | http://dx.doi.org/10.1590/S0103-64402007000400009 | |
dc.identifier.citation | Brazilian Dental Journal. Fundação Odontológica de Ribeirão Preto, v. 18, n. 4, p. 320-323, 2007. | |
dc.identifier.doi | 10.1590/S0103-64402007000400009 | |
dc.identifier.file | S0103-64402007000400009.pdf | |
dc.identifier.issn | 0103-6440 | |
dc.identifier.scielo | S0103-64402007000400009 | |
dc.identifier.uri | http://repositorio.unifesp.br/handle/11600/3486 | |
dc.language.iso | eng | |
dc.publisher | Fundação Odontológica de Ribeirão Preto | |
dc.relation.ispartof | Brazilian Dental Journal | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | epithelial cell | en |
dc.subject | rat tongue | en |
dc.subject | transmission electron microscopy | en |
dc.subject | high-resolution scanning electron microscopy | en |
dc.subject | bacteria | en |
dc.title | Ultrastructure of the adhesion of bacteria to the epithelial cell membrane of three-day postnatal rat tongue mucosa: a transmission and high-resolution scanning electron microscopic study | en |
dc.type | info:eu-repo/semantics/article |
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