E-viri
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Nowakiewicz, Aneta; Zięba, Przemysław; Gnat, Sebastian; Trościańczyk, Aleksandra; Osińska, Marcelina; Łagowski, Dominik; Kosior-Korzecka, Urszula; Puzio, Iwona
The Science of the total environment, 02/2020, Letnik: 705Journal Article
As the last link in the food chain in a complex ecosystem covering at least three different environmental spheres, species of wildlife carnivorous mammals constitute a group accumulating potential pathogens and factors resulting from human activity, including the emergence of drug resistance. Therefore, the aim of this study was to evaluate the level and range of resistance in commensal E. faecalis isolated from wildlife carnivorous mammals and genetic relationships in terms of the source of these strains as well as resistance and virulence genes. Differentiation between strains was performed based on ADSRRS-fingerprinting method. The results showed that almost half of the tested animals (48%) were carriers of at least one multidrug resistant E. faecalis strain. Moreover, 44% of MDR-positive animals showed two or three strains differing in both the genotype and the resistance phenotype. A significant percentage of strains were resistant to high-level aminoglycosides (from 20% to even 57.5%). The resistance and virulence gene profiles showed a rich panel of genes closely related to isolates from nosocomial infection and from livestock animals. The presence of the same genotypes in different hosts reflects not only a possible transfer of genes between E. faecalis strains but also exchange of strains between animals. The obtained results reflect a very high level of contamination of animals that are not subjected to targeted antibiotic therapy, which may suggest the degree of pollution of the environment. Wildlife animals and their environment can be a link closing the circulation cycle of genes and even epidemiologically important strains; therefore, there is a high risk that this pool will never run out and will be maintained at a high level. Display omitted •Multidrug resistant E. faecalis occur in every second carnivorous wildlife mammal.•A single wildlife individual is often a carrier of more than one E. faecalis MDR strain.•Wildlife animals can close the circulation of resistance in the environment.
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