Virulence-associated genes diversity in Escherichia coli O128 strains isolated in São Paulo, Brazil
Vol. 67 No. 2 (2008), ORIGINAL ARTICLE
Vol. 67 No. 2 (2008)

Virulence-associated genes diversity in Escherichia coli O128 strains isolated in São Paulo, Brazil

ORIGINAL ARTICLE
https://doi.org/10.53393/rial.2008.67.32784
Published 2008-04-01
Ângela Maria Girardi Dias
Instituto Adolfo Lutz, Laboratório de Bacteriologia, Sorocaba, SP
Kinue Irino
Instituto Adolfo Lutz, divisão de Biologia Médica, São Paulo, SP
Elena Kano
Instituto Adolfo Lutz, divisão de Biologia Médica, São Paulo, SP
Maria Aidê Mitiko Fukushima Kato
Instituto Adolfo Lutz, divisão de Biologia Médica, São Paulo, SP
Tânia Aparecida Tardelo Gomes
Universidade Federal de São Paulo, Escola Paulista de Medicina, São Paulo, SP
Luiz Rachid Trabulsi
Instituto Butantan, Laboratório Especial de Microbiologia, São Paulo, SP
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Keywords

Escherichia coli
Enteropathogenic E.coli
EPEC
Serotypes O128

How to Cite

1.
Dias Ângela MG, Irino K, Kano E, Kato MAMF, Gomes TAT, Trabulsi LR. Virulence-associated genes diversity in Escherichia coli O128 strains isolated in São Paulo, Brazil. Rev Inst Adolfo Lutz [Internet]. 2008 Apr. 1 [cited 2024 Dec. 4];67(2):156-62. Available from: https://periodicos.saude.sp.gov.br/RIAL/article/view/32784
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Abstract

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.
https://doi.org/10.53393/rial.2008.67.32784
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