Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Microbial Pathogenes...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Microbial Pathogenesis
Article . 2019 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
versions View all 2 versions
addClaim

Conjugal transfer of PMQR from uropathogenic E.coli under high ciprofloxacin selection pressure generates gyrA mutation

Authors: Shreya, Basu; Mandira, Mukherjee;

Conjugal transfer of PMQR from uropathogenic E.coli under high ciprofloxacin selection pressure generates gyrA mutation

Abstract

Incidence of high fluoroquinolone resistance has been rising rapidly worldwide. Resistance against fluoroquinolones can be either chromosomal or plasmid mediated. Plasmid mediated quinolone resistant(PMQR) genes impart low level of resistance against fluoroquinolones but provides favorable background for selection of additional chromosomally encoded resistance mechanisms. In the natural habitat, conjugal transfer of PMQR genes provides a vehicle for dissemination of fluoroquinolone resistance. Our study indicated successful transmission of PMQR determinants(aac(6')-Ib-cr, qnrA, qnrB, qnrS, oqxB) from ciprofloxacin resistant clinical uropathogenic E.coli(UPEC) isolates to susceptible E.coliJ53Azide-resistant strain in vitro in presence of high ciprofloxacin (5 μg/ml) selection pressure generating transconjugants that exhibited varied MIC(25-800μg/ml) towards the drug with acquired mutations Ser83Leu and Asp87Asn in the quinolone resistant determining regions(QRDR) in gyrA. Therefore this is a first study of its kind that identified high rate of gyrA mutations among transconjugants selected under high ciprofloxacin pressure resulting from bacterial conjugation a common phenomenon in natural habitat along with PMQR gene transmission which imposes a major public health concern.

Related Organizations
Keywords

DNA, Bacterial, Recombination, Genetic, Microbial Sensitivity Tests, Quinolones, Anti-Bacterial Agents, Ciprofloxacin, DNA Gyrase, Genes, Bacterial, Conjugation, Genetic, Drug Resistance, Bacterial, Mutation, Uropathogenic Escherichia coli, Fluoroquinolones, Plasmids

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    10
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Average
Average
Upload OA version
Are you the author of this publication? Upload your Open Access version to Zenodo!
It’s fast and easy, just two clicks!