High Diversity of Extended-Spectrum β-Lactamases in Escherichia coli Isolates from Italian Broiler Flocks-Reference-Cited by-同舟云学术

High Diversity of Extended-Spectrum β-Lactamases in Escherichia coli Isolates from Italian Broiler Flocks

Published:2010-04 Issue:4 Volume:54 Page:1623-1626
ISSN:0066-4804
Container-title:Antimicrobial Agents and Chemotherapy
language:en
Short-container-title:Antimicrob Agents Chemother

Author:

Bortolaia Valeria¹,Guardabassi Luca¹,Trevisani Marcello²,Bisgaard Magne¹,Venturi Luciano³,Bojesen Anders Miki¹

Affiliation:

1. Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, 1870 Frederiksberg C, Denmark

2. Department of Veterinary Public Health and Animal Pathology, Faculty of Veterinary Medicine, University of Bologna, 40064 Ozzano Emilia, Italy

3. and Department of Public Health, Azienda Sanitaria Locale (ASL) di Ravenna, 48100 Ravenna, Italy

Abstract

ABSTRACT We characterized 67 Escherichia coli isolates with reduced susceptibility to cefotaxime or ceftiofur obtained from healthy broilers housed in five Italian farms. The bla CTX-M-1 , bla CTX-M-32 and bla SHV-12 β-lactamase genes were identified on IncI1, IncN, or IncFIB plasmids. Considerable genetic diversity was detected among the extended-spectrum β-lactamase (ESBL)-producing isolates, and we identified indistinguishable strains in unrelated farms and indistinguishable plasmids in genetically unrelated strains. The detection of highly mobile plasmids suggests a potential animal reservoir for β-lactamase genes.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Pharmacology (medical),Pharmacology

Link

https://journals.asm.org/doi/pdf/10.1128/AAC.01361-09

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