High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland

In this study, we investigated the occurrence of plasmid-mediated quinolone resistance (PMQR) in extended-spectrum β-lactamase- (ESBL) and/or AmpC-type β-lactamase-producing <i>Enterobacterales</i> isolates from free-living birds in Poland. The prevalence of the <i>qnrB19</i>...

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Main Authors: Beata Furmanek-Blaszk, Marian Sektas, Bartosz Rybak
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/24/16/12804
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author Beata Furmanek-Blaszk
Marian Sektas
Bartosz Rybak
author_facet Beata Furmanek-Blaszk
Marian Sektas
Bartosz Rybak
author_sort Beata Furmanek-Blaszk
collection DOAJ
description In this study, we investigated the occurrence of plasmid-mediated quinolone resistance (PMQR) in extended-spectrum β-lactamase- (ESBL) and/or AmpC-type β-lactamase-producing <i>Enterobacterales</i> isolates from free-living birds in Poland. The prevalence of the <i>qnrB19</i> gene was 63%, and the distribution of isolates in terms of bacterial species was as follows: 67% (22/33) corresponded to <i>Escherichia coli</i>, 83% (5/6) to <i>Rahnella aquatilis</i>, 44% (4/9) to <i>Enterobacter cloacae</i> and 33% (1/3) to <i>Klebsiella pneumoniae</i>. The <i>qnrB19</i> gene was also found in a single isolate of <i>Citrobacter freundii</i>. The molecular characteristics of <i>qnrB19</i>-positive isolates pointed to extended-spectrum beta lactamase CTX-M as the most prevalent one (89%) followed by TEM (47%), AmpC (37%) and SHV (16%). This study demonstrates the widespread occurrence of PMQR-positive and ESBL/AmpC-producing <i>Enterobacterales</i> isolates in fecal samples from wild birds. In this work, plasmid pAM1 isolated from <i>Escherichia coli</i> strain SN25556 was completely sequenced. This plasmid is 3191 nucleotides long and carries the <i>qnrB19</i> gene, which mediates decreased susceptibility to quinolones. It shares extensive homology with other previously described small <i>qnrB19</i>-harboring plasmids. The nucleotide sequence of pAM1 showed a variable region flanked by an oriT locus and a Xer recombination site. The presence of a putative recombination site was detected, suggesting that interplasmid recombination events might have played a role in the development of pAM1. Our results highlight the broad geographical spread of ColE-type Qnr resistance plasmids in clinical and environmental isolates of <i>Enterobacterales</i>. As expected from the results of phenotypic susceptibility testing, no resistance genes other than <i>qnrB19</i> were identified.
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spelling doaj.art-d4d350459362467bb3d5f91f03bbedee2023-11-19T01:29:56ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672023-08-0124161280410.3390/ijms241612804High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in PolandBeata Furmanek-Blaszk0Marian Sektas1Bartosz Rybak2Department of Microbiology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, PolandDepartment of Microbiology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, PolandDepartment of Environmental Toxicology, Faculty of Health Sciences with Institute of Maritime and Tropical Medicine, Medical University of Gdansk, Debowa Str. 23A, 80-204 Gdansk, PolandIn this study, we investigated the occurrence of plasmid-mediated quinolone resistance (PMQR) in extended-spectrum β-lactamase- (ESBL) and/or AmpC-type β-lactamase-producing <i>Enterobacterales</i> isolates from free-living birds in Poland. The prevalence of the <i>qnrB19</i> gene was 63%, and the distribution of isolates in terms of bacterial species was as follows: 67% (22/33) corresponded to <i>Escherichia coli</i>, 83% (5/6) to <i>Rahnella aquatilis</i>, 44% (4/9) to <i>Enterobacter cloacae</i> and 33% (1/3) to <i>Klebsiella pneumoniae</i>. The <i>qnrB19</i> gene was also found in a single isolate of <i>Citrobacter freundii</i>. The molecular characteristics of <i>qnrB19</i>-positive isolates pointed to extended-spectrum beta lactamase CTX-M as the most prevalent one (89%) followed by TEM (47%), AmpC (37%) and SHV (16%). This study demonstrates the widespread occurrence of PMQR-positive and ESBL/AmpC-producing <i>Enterobacterales</i> isolates in fecal samples from wild birds. In this work, plasmid pAM1 isolated from <i>Escherichia coli</i> strain SN25556 was completely sequenced. This plasmid is 3191 nucleotides long and carries the <i>qnrB19</i> gene, which mediates decreased susceptibility to quinolones. It shares extensive homology with other previously described small <i>qnrB19</i>-harboring plasmids. The nucleotide sequence of pAM1 showed a variable region flanked by an oriT locus and a Xer recombination site. The presence of a putative recombination site was detected, suggesting that interplasmid recombination events might have played a role in the development of pAM1. Our results highlight the broad geographical spread of ColE-type Qnr resistance plasmids in clinical and environmental isolates of <i>Enterobacterales</i>. As expected from the results of phenotypic susceptibility testing, no resistance genes other than <i>qnrB19</i> were identified.https://www.mdpi.com/1422-0067/24/16/12804<i>Enterobacterales</i>free-living birdsESBL/AmpCPMQRplasmid
spellingShingle Beata Furmanek-Blaszk
Marian Sektas
Bartosz Rybak
High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland
International Journal of Molecular Sciences
<i>Enterobacterales</i>
free-living birds
ESBL/AmpC
PMQR
plasmid
title High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland
title_full High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland
title_fullStr High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland
title_full_unstemmed High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland
title_short High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland
title_sort high prevalence of plasmid mediated quinolone resistance among esbl ampc producing enterobacterales from free living birds in poland
topic <i>Enterobacterales</i>
free-living birds
ESBL/AmpC
PMQR
plasmid
url https://www.mdpi.com/1422-0067/24/16/12804
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