Enteroaggregative Escherichia coli from humans and animals differ in major phenotypical traits and virulence genes

Enteroaggregative Escherichia coli from humans and animals differ in major phenotypical traits and virulence genes

Autor Uber, Ana Paula Google Scholar
Trabulsi, Luiz R. Google Scholar
Irino, Kinue Google Scholar
Beutin, Lothar Google Scholar
Ghilardi, Angela CR Google Scholar
Gomes, Tania Aparecida Tardelli Autor UNIFESP Google Scholar
Liberatore, Ana Maria A Autor UNIFESP Google Scholar
Castro, Antonio NFP de Google Scholar
Elias Junior, Waldir Pereira Autor UNIFESP Google Scholar
Instituição Inst Butantan
Inst Adolfo Lutz Registro
Fed Inst Risk Assessment
Universidade Federal de São Paulo (UNIFESP)
Universidade de São Paulo (USP)
Resumo Enteroaggregative Escherichia coli (EAEC) is characterized by the expression of the aggregative adherence pattern to cultured epithelial cells. in this study, we determined the phenotypic and genotypic relationships among 86 EAEC strains of human and animal (calves, piglets and horses) feces. Serotypes and the presence of EAEC virulence markers were determined, and these results were associated with ribotyping. Strains harboring aggR (typical EAEC) of human origin were found carrying several of the searched markers, while atypical EAEC harbored none or a few markers. the strains of animal origin were classified as atypical EAEC (strains lacking aggR) and harbored only irp2 or shf. Strains from humans and animals belonged to several different serotypes, although none of them prevailed. Sixteen ribotypes were determined, and there was no association with virulence genes profiles or serotypes. Relationship was not found among the strains of this study, and the assessed animals may not represent a reservoir of human pathogenic typical EAEC.
Palavra-chave enteroaggregative Escherichia coli
virulence factor
serotype
ribotyping
Idioma Inglês
Data de publicação 2006-03-01
Publicado em Fems Microbiology Letters. Oxford: Blackwell Publishing, v. 256, n. 2, p. 251-257, 2006.
ISSN 0378-1097 (Sherpa/Romeo, fator de impacto)
Publicador Blackwell Publishing
Extensão 251-257
Fonte http://dx.doi.org/10.1111/j.1574-6968.2006.00124.x
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000235595700011
Endereço permanente http://repositorio.unifesp.br/handle/11600/28756

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