Virulence properties of Escherichia coli strains belonging to enteropathogenic (EPEC) serogroups isolated from calves with diarrhea

Virulence properties of Escherichia coli strains belonging to enteropathogenic (EPEC) serogroups isolated from calves with diarrhea

Autor Saridakis, H. O. Google Scholar
ElGared, S. A. Google Scholar
Vidotto, M. C. Google Scholar
Guth, BEC Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo Nineteen Escherichia coli strains belonging to enteropathogenic (EPEC) serogroups were isolated from calves with diarrhea in Parana State, Brazil, and studied for virulence markers associated with EPEC or enterohemorrhagic E. coli (EHEC). the 19 isolates belonged to 12 serotypes with isolates of O26:H11, O119:H25 and O114:H- being the most prevalent. Localized adherence (LA) was demonstrated for 37% of the isolates, consisting of all four O26:H11, both O114:H- and one O114:H40 isolates. All the LA strains were positive in the fluorescent-actin staining (FAS) test and possessed attaching-effacing E. coli (eae) sequences, but only O114 strains hybridized with the EPEC adherence factor (EAF) probe. None of the strains produced Shiga-like toxins (Verotoxin). Only the O26:H11 strains hybridized with the EHEC plasmid specific (CVD419) probe and were enterohemolytic, properties associated with EHEC strains. This investigation demonstrates that among the bovine strains isolated only those of serogroup O114 behaved as typical EPEC.
Palavra-chave Escherichia coli
cattle-bacteria
virulence
diarrhoea
Idioma Inglês
Data de publicação 1997-02-01
Publicado em Veterinary Microbiology. Amsterdam: Elsevier B.V., v. 54, n. 2, p. 145-153, 1997.
ISSN 0378-1135 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 145-153
Fonte http://dx.doi.org/10.1016/S0378-1135(96)01278-3
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:A1997WJ62000005
Endereço permanente http://repositorio.unifesp.br/handle/11600/25688

Exibir registro completo




Arquivo

Arquivo Tamanho Formato Visualização

Não existem arquivos associados a este item.

Este item está nas seguintes coleções

Buscar


Navegar

Minha conta