Virulence traits in Escherichia coli strains isolated from outpatients with urinary tract infections.

Abstract:

:This study aims to characterize phenotypic and genotypic virulence traits in Escherichia coli strains, isolated from outpatients with urinary tract infections, comparing with those obtained from inpatients. Information on the pathogenic behavior of the uropathogenic strains was obtained by monitoring different biological properties, such as autoagglutination, hemagglutination, adhesiveness to and invasion of human bladder (HT1376) cells, biofilm formation, phylogenetic grouping, and virulence-related genes. The results show similar behavior in the two groups concerning autoagglutination, hemagglutination, and biofilm formation. None of the strains examined was invasive. However, in strains from outpatients there was an increased adhesion to HT1376 cells compared with clinical strains, a significant higher presence of genes codifying for adhesins and cell protection factors, and a lower proportion of strains belonging to B1 group. These findings add further information on the pathogenic traits of community E. coli, since strains isolated from the outpatients' group were differently "armed" in comparison with those of clinical cases, and more suitable to infect healthy individuals.

authors

Longhi C,Cossu A,Iebba V,Massaro MR,Cipriani D,Chiarini F,Conte MP,Seganti L,Osborn J,Schippa S

doi

10.1177/039463200802100326

subject

Has Abstract

pub_date

2008-07-01 00:00:00

pages

715-23

issue

3

eissn

0394-6320

issn

2058-7384

pii

26

journal_volume

21

pub_type

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