Diversity of surface structures and virulence genetic markers among enteroaggregative Escherichia coli (EAEC) strains with and without the EAEC DNA probe sequence

Diversity of surface structures and virulence genetic markers among enteroaggregative Escherichia coli (EAEC) strains with and without the EAEC DNA probe sequence

Author Suzart, Sergio Autor UNIFESP Google Scholar
Guth, Beatriz Ernestina Cabilio Autor UNIFESP Google Scholar
Pedroso, Margareth Z. Autor UNIFESP Google Scholar
Okafor, Udenma M. Autor UNIFESP Google Scholar
Gomes, Tania Aparecida Tardelli Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract The expression of surface structures and the presence of DNA sequences related to putative virulence factors were investigated in 22 enteroaggregative Escherichia coli strains (EAEC). Fimbria was the most frequent (72.7%) structure identified. Only strains hybridising with the EAEC DNA probe carried aggA, but one strain produced a similar but unrelated bundle-like structure. All probe-positive and 62.5% of the probe-negative strains carried the virulence genes tested; aspU and irp2 prevailed among the former strains. the EAEC probe-positive strains were more diverse, and some of these strains, which promoted cell detachment, also carried the hly and pap sequences, thus suggesting they might represent uropathogenic E. coli. (C) 2001 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.
Keywords enteroaggregative Escherichia coli
adherence
hemagglutination pattern
virulence marker
diarrhoea
Language English
Date 2001-07-24
Published in Fems Microbiology Letters. Amsterdam: Elsevier B.V., v. 201, n. 2, p. 163-168, 2001.
ISSN 0378-1097 (Sherpa/Romeo, impact factor)
Publisher Elsevier B.V.
Extent 163-168
Origin http://dx.doi.org/10.1111/j.1574-6968.2001.tb10751.x
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000170159300008
URI http://repositorio.unifesp.br/handle/11600/26595

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