Heterogeneity among strains of diffusely adherent Escherichia coli isolated in Brazil

Heterogeneity among strains of diffusely adherent Escherichia coli isolated in Brazil

Author Lopes, Lucia M. Autor UNIFESP Google Scholar
Fabbricotti, Sandra H. Autor UNIFESP Google Scholar
Ferreira, Antonio JP Google Scholar
Kato, Maria AMF Google Scholar
Michalski, Jane Google Scholar
Scaletsky, Isabel CA Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Inst Adolfo Lutz Registro
Universidade de São Paulo (USP)
Univ Maryland
Abstract One hundred twelve diffusely adherent Escherichia coli strains isolated from children in a case control study were evaluated for virulence-associated characteristics, serotyping, antibiotic resistance, and plasmid profiles. Half of the strains hybridized with the probes for icuA (aerobactin) and fimH (type 1 pili); daaE (F1845 fimbriae), afa (afimbrial Dr adhesin), agg-3A (aggregative adhesion fimbria type III fimbriae), pap (P fimbriae), astA (EAST1 toxin), and shET1 (Shigella enterotoxin 1) sequences were present in < 20% of the strains. the shET1 gene was noted most frequently in strains isolated from patients. A minority (7%) of the strains produced hemolysin or colicin or showed cytotoxic effects on Vero cells. Forty-five different serotypes were found. the majority (70%) of the strains presented multiple antibiotic resistance. Antibiotic resistance and diffuse adherence were located on the same conjugative plasmids. These results suggest that the transfer of these potential virulence markers could be important in the epidemiology of diffusely adherent E. coli.
Language English
Date 2005-04-01
Published in Journal of Clinical Microbiology. Washington: Amer Soc Microbiology, v. 43, n. 4, p. 1968-1972, 2005.
ISSN 0095-1137 (Sherpa/Romeo, impact factor)
Publisher Amer Soc Microbiology
Extent 1968-1972
Origin http://dx.doi.org/10.1128/JCM.43.4.1968-1972.2005
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000228404100077
URI http://repositorio.unifesp.br/handle/11600/28207

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