Cited by 306Antibiotic Resistance in BacteriaPharmaceutical and Antibiotic Environmental ImpactsDrug Transport and Resistance Mechanisms

Plasmid-mediated quinolone resistance: an update

Rodríguez-Martínez, José Manuel, Velasco, Carmen, Pascual, Álvaro, Cano, María Eliecer, Martínez-Martínez, Luis, Martínez-Martínez, Luis, Pascual, Álvaro·2011·Journal of Infection and Chemotherapy

Abstract

In 1998, the first plasmid-mediated gene involved in quinolone resistance (currently named qnrA1) was reported. Extra qnr-like plasmid-mediated genes (qnrB, qnrS, qnrC, qnrD) and their chromosomal homologues have also been characterized. These genes code for a pentapeptide repeat protein that protects type II topoisomerases from quinolones. Since then, there have been reports of two other plasmid-mediated resistance mechanisms: the modification of quinolones with a piperazinyl substituent by the acetyltransferase, Aac(6')-Ib-cr; and active efflux by QepA and OqxAB, pumps related to major facilitator superfamily (MFS) transporters. These genes have a wide geographic distribution (mainly in Enterobacteriaceae). Because of the difficulties of phenotypic detection of this type of resistance, its real prevalence is only partially known. One important point is that although these mechanisms cause only low-level resistance, they favor and complement the selection of other resistance mechanisms.

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Crossref · 10.1007/s10156-010-0120-2

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  • Reduction in the DNA gyrase-DNA interaction by Qnr decreases the opportunities for quinolone to form and stabilize the lethal gyrase-cleaved DNA-quinolone complex.

    “It is thought that this reduction in the DNA gyrase-DNA interaction decreases the opportunities of the quinolone molecule to form and stabilize the gyrase-cleaved DNA-quinolone complex that is lethal for the cell (55).”

    From Mechanisms of Antibiotic Resistance (2016) · cites this paper as [55]

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Authors
Rodríguez-Martínez, J. M., Velasco, C., Pascual, Á., Cano, M. E., Martínez-Martínez, L., Martínez-Martínez, L., & Pascual, Á.
Affiliations
  • Universidad de Sevilla (ES)
  • Marqués de Valdecilla University Hospital (ES)
Corresponding author
  • Rodríguez-Martínez, José Manuel
  • Velasco, Carmen
  • Cano, María Eliecer
Venue
Journal of Infection and Chemotherapy
Publisher
Elsevier BV
Published
2011
Volume
17
Issue
2
Pages
149-182
ISSN
1341-321X (ISSN-L)
OpenAlex
W1964492646
Cited by
306
References
260
Citations by year
2026: 8 · 2025: 13 · 2024: 15 · 2023: 8 · 2022: 25 · 2021: 15 · 2020: 19 · 2019: 14 · 2018: 21 · 2017: 22 · 2016: 33 · 2015: 19 · 2014: 28 · 2013: 28 · 2012: 26
FWCI
1.03
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Infection and Chemotherapy (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Antibiotic Resistance in Bacteria
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
Keywords
plasmid-mediated quinolone resistance, qnr genes, qnrA, qnrB, qnrS, qnrD, aac(6')-Ib-cr, qepA, oqxAB, major facilitator superfamily transporter, efflux pumps, Enterobacteriaceae, antibiotic resistance mechanisms, resistance prevalence
MeSH terms
Acetyltransferases, Anti-Bacterial Agents, Bacterial Proteins, Enterobacteriaceae, Enterobacteriaceae Infections, Humans, Microbial Sensitivity Tests, Plasmids, Quinolones, Prevalence, Drug Resistance, Bacterial

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