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, biolilm formation, phylogenetic grouping, and virulence-related genes. The results show similar behavior in the two groups concerning autoagglutination, hem agglutination, 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 131 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.

VIRULENCE TRAITS IN ESCHERICHIA COLI STRAINS ISOLATED FROM OUTPATIENTS WITH URINARY TRACT INFECTIONS / Longhi, Catia; A., Cossu; Iebba, Valerio; M. R., Massaro; D., Cipriani; Chiarini, Fernanda; Conte, Maria Pia; Seganti, Lucilla; Osborn, John Frederick; Schippa, Serena. - In: INTERNATIONAL JOURNAL OF IMMUNOPATHOLOGY AND PHARMACOLOGY. - ISSN 0394-6320. - 21:3(2008), pp. 715-723.

VIRULENCE TRAITS IN ESCHERICHIA COLI STRAINS ISOLATED FROM OUTPATIENTS WITH URINARY TRACT INFECTIONS

LONGHI, Catia;IEBBA, VALERIO;CHIARINI, Fernanda;CONTE, Maria Pia;SEGANTI, Lucilla;OSBORN, John Frederick;SCHIPPA, Serena
2008

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, biolilm formation, phylogenetic grouping, and virulence-related genes. The results show similar behavior in the two groups concerning autoagglutination, hem agglutination, 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 131 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.
2008
escherichia coli; outpatients; uropathogenic e. coli; uti; virulence determinants
01 Pubblicazione su rivista::01a Articolo in rivista
VIRULENCE TRAITS IN ESCHERICHIA COLI STRAINS ISOLATED FROM OUTPATIENTS WITH URINARY TRACT INFECTIONS / Longhi, Catia; A., Cossu; Iebba, Valerio; M. R., Massaro; D., Cipriani; Chiarini, Fernanda; Conte, Maria Pia; Seganti, Lucilla; Osborn, John Frederick; Schippa, Serena. - In: INTERNATIONAL JOURNAL OF IMMUNOPATHOLOGY AND PHARMACOLOGY. - ISSN 0394-6320. - 21:3(2008), pp. 715-723.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/360344
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