Virulence-associated genes diversity in Escherichia coli O128 strains isolated in São Paulo, Brazil
Hundred-three Escherichia coli strains of serogroup O128 were serotyped and examined for virulenceassociated genes. The 59 representative strains of all serotypes were submitted to ribotyping. The serotypes O128:H35 (41.7%), O128:H2 (14.6%), O128:H- (8.7%) and O128:H8 (6.8%) were the most frequently...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Brasil |
| Institución: | Instituto Adolfo Lutz |
| Repositorio: | Revista do Instituto Adolfo Lutz (Online) |
| Idioma: | inglés |
| OAI Identifier: | oai:ojs.periodicos.saude.sp.gov.br:article/32784 |
| Acceso en línea: | https://periodicos.saude.sp.gov.br/RIAL/article/view/32784 |
| Access Level: | acceso abierto |
| Palabra clave: | Escherichia coli Enteropathogenic E.coli EPEC Serotypes O128 Escherchia coli E.coli enteropatogênica Sorotipos O128 |
| Sumario: | Hundred-three Escherichia coli strains of serogroup O128 were serotyped and examined for virulenceassociated genes. The 59 representative strains of all serotypes were submitted to ribotyping. The serotypes O128:H35 (41.7%), O128:H2 (14.6%), O128:H- (8.7%) and O128:H8 (6.8%) were the most frequently found. Serotype O128ab:H2 strains only carried the eae and bfpA sequences. These strains exhibited the LA-like adhesion pattern. Serotype O128ab:H8 strains and some non-motile strains reacted only with the eae probe, and they were classified as atypical EPEC. The O128:H35 strains corresponded to the enteroaggregative category. Enterotoxigenic strains were found among O128ac:H7, O128ac:H21, O128ac:H27 and O128ac:H- strains. Clonal group A comprised the majority of virulence markers - harbouring strains, while clonal group B included mainly those strains devoid of any virulence marker. |
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