Article (Scientific journals)
A three-year evolution and comparison of the bla CTX-M genes in pathogenic and non-pathogenic Escherichia coli isolated from young diarrheic and septicaemic calves in Belgium
Guérin, Virginie; Farchi, Alban; Cawez, Frédéric et al.
2022In Research in Veterinary Science, 152, p. 647-650
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Keywords :
CTX-M; ESBL; Livestock; Escherichia coli; Antimicrobial resistance
Abstract :
[en] Escherichia coli producing Extended-Spectrum-β-Lactamases (ESBL) are a major public health hazard worldwide. The most frequent ESBL belong to the CTX-M family. This study follows their prevalence in pathogenic and nonpathogenic ESBL-producing E. coli isolated from young diarrheic and septicaemic calves over three calving seasons. The triplex PCR targeted three main groups: CTX-M-1, CTX-M-2 and CTX-M-9. Of the 394 isolates studied, 388 (98.5%) were positive, with a majority of CTX-M-1 (243, 61.7%), following by CTX-M-9 (74, 18.8%) and CTX-M-2 (64, 16.2%). The progressive decrease of ESBL-resistance of pathogenic E. coli is not linked to any shift in genetic background, blaCTX-M genes still present in 99% of the isolates, or to the proportion of the three CTX-M groups. Moreover, no significant difference was observed in the CTX-M content between pathogenic and non-pathogenic E. coli.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Guérin, Virginie;  Department of Infectious and Parasitic Diseases, FARAH and Faculty of Veterinary Medicine, University of Liège, Bacteriology, Liège, Belgium ; UMR3525, Current affiliation: Unité EERA, Institut Pasteur, APHP, Université Paris Saclay, Paris, France ; CNRS, Roux, Paris, France
Farchi, Alban;  CEREA ; EDF R&D, IPSL, France
Cawez, Frédéric ;  Université de Liège - ULiège > Integrative Biological Sciences (InBioS)
Mercuri, Paola ;  Université de Liège - ULiège > Département des sciences de la vie > Macromolécules biologiques
Lucas, Pierrick;  Anses sequencing platform, ANSES, Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
Blanchard, Yannick;  Anses sequencing platform, ANSES, Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
Saulmont, Marc;  Regional Animal Health and Identification Association (ARSIA), Ciney, Belgium
Mainil, Jacques ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI)
Thiry, Damien ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Bactériologie vétérinaire et maladies bactériennes animales
Language :
English
Title :
A three-year evolution and comparison of the bla CTX-M genes in pathogenic and non-pathogenic Escherichia coli isolated from young diarrheic and septicaemic calves in Belgium
Publication date :
07 September 2022
Journal title :
Research in Veterinary Science
ISSN :
0034-5288
eISSN :
1532-2661
Publisher :
Elsevier BV
Volume :
152
Pages :
647-650
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 March 2023

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