NDLI: Occurrence of virulence genes in multidrug-resistant Escherichia coli isolates from Iberian wolves (Canis lupus signatus) in Portugal

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Occurrence of virulence genes in multidrug-resistant Escherichia coli isolates from Iberian wolves (Canis lupus signatus) in Portugal

Content Provider	Semantic Scholar
Author	Simões, Romeu Luis Rocha Ferreira, Carla Gonçalves, José Álvares, Francisco Rio-Maior, Helena Roque, Sara Brandão, Ricardo Costa, Paulo Martins Da
Copyright Year	2012
Abstract	While much evidence supports the view that the total consumption of antimicrobials is the critical factor in selecting resistance, the possibility of resistant isolates and/or genes encoding resistance being transferred among different living communities has raised serious concerns. In the present study, Escherichia coli isolates recovered from faecal samples (n = 34) of Iberian wolves (Canis lupus signatus) were characterized for their antimicrobial drug susceptibility. Nearly two thirds of the isolates carried resistance to one or more antimicrobial drugs (in a panel of 19 antibiotics), and resistance to tetracycline, ampicillin and streptomycin was most widespread. By screening a set of 20 multidrug-resistant E. coli for virulence genes, we found strains positive for cdt, chuA, cvaC, eaeA, paa and bfpA, which was the most common virulence trait. Phylogenetic analyses have shown that the majority of these E. coli strains fall into phylogenetic groups A and B1. In this study, the diversity of extended-spectrum β-lactamase-producing strains was expressed by both polymorphism of the pulsed-field gel electrophoresis patterns and the presence of various resistance and virulence genes profiles. Finding the specific implications of these multi-resistant bacteria (hosting several virulence factors) in wolf conservation is a challenging topic to be addressed in further investigations.
Starting Page	677
Ending Page	684
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1007/s10344-012-0616-4
Alternate Webpage(s)	http://www.hsrudimenta.com/wp-content/uploads/2014/11/Article-Iberian-wolves.pdf
Alternate Webpage(s)	https://doi.org/10.1007/s10344-012-0616-4
Volume Number	58
Journal	European Journal of Wildlife Research
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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