JAC Advance Access originally published online on August 10, 2006
Journal of Antimicrobial Chemotherapy 2006 58(4):748-751; doi:10.1093/jac/dkl326
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Phylogenetic background and carriage of pathogenicity island-like domains in relation to antibiotic resistance profiles among Escherichia coli urosepsis isolates
1 Laboratoire d'études de génétique bactérienne dans les infections de l'enfant (EA3105), Université Denis Diderot-Paris 7 AP-HP, Hôpital Robert Debré, Service de Microbiologie, 75019 Paris, France 2 Laboratoire de Bactériologie Centre Hospitalier de Gonesse, Gonesse, France
Received 22 March 2006; returned 5 July 2006; revised 6 July 2006; accepted 14 July 2006
*Correspondence address. Service de Microbiologie, Hôpital Robert Debré, 48 Bd Sérurier, 75395 Paris cedex 19, France. Tel: +33-1-40-03-23-40; Fax: +33-1-40-03-24-50; E-mail: edouard.bingen{at}rdb.ap-hop-paris.fr
We studied 100 well-characterized E. coli blood isolates from patients with urosepsis for their susceptibility to nalidixic acid, ampicillin and trimethoprimsulfamethoxazole, according to prevalence of virulence factors, phylogenetic groups and subgroups, PAI IIJ96-like domains (determined by physical linkage of cnf1, hly and hra) and PAI ICFT073-like domains (determined by physical linkage of papGII to the hly locus). Nalidixic acid resistance was associated with a lower prevalence of sfa/foc, K1 antigen, pathogenicity island IIJ96-like domains, subgroup B2/I and a shift towards group A.
Keywords: virulence factors , ribotyping , quinolones , PCR
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