Results 41 to 50 of about 316,175 (228)

Mutational Diversity in the Quinolone Resistance-Determining Regions of Type-II Topoisomerases of Salmonella Serovars

open access: yesAntibiotics, 2021
Quinolone resistance in bacterial pathogens has primarily been associated with mutations in the quinolone resistance-determining regions (QRDRs) of bacterial type-II topoisomerases, which are DNA gyrase and topoisomerase IV. Depending on the position and
Aqsa Shaheen   +6 more
doaj   +1 more source

Plasmid-mediated Quinolone Resistance among Non-TyphiSalmonella enterica Isolates, USA

open access: yesEmerging Infectious Diseases, 2010
We determined the prevalence of plasmid-mediated quinolone resistance mechanisms among non-Typhi Salmonella spp. isolated from humans, food animals, and retail meat in the United States in 2007. Six isolates collected from humans harbored aac(6′)Ib-cr or
Maria Sjölund-Karlsson   +12 more
doaj   +1 more source

A mutational analysis and molecular dynamics simulation of quinolone resistance proteins QnrA1 and QnrC from Proteus mirabilis [PDF]

open access: yes, 2010
Background The first report on the transferable, plasmid-mediated quinolone-resistance determinant qnrA1 was in 1998. Since then, qnr alleles have been discovered worldwide in clinical strains of Gram-negative bacilli.
Qinglan Guo   +7 more
core   +1 more source

High Prevalence of Plasmid-Mediated Quinolone Resistance Determinants Among Serotype K1 Hypervirulent Klebsiella pneumoniae Isolates in China

open access: yesMicrobial Drug Resistance, 2019
Thirty-five serotype K1 hypervirulent Klebsiella pneumoniae (K1-hvKP) isolates collected from a Chinese hospital during the whole year of 2017 were evaluated to characterize the prevalence of the plasmid-mediated quinolone resistance (PMQR) genes.
Yang Liu   +6 more
semanticscholar   +1 more source

Rapid evolution of fluoroquinolone-resistant Escherichia coli in Nigeria is temporally associated with fluoroquinolone use [PDF]

open access: yes, 2011
Background: Antibiotic resistance has necessitated fluoroquinolone use but little is known about the selective forces and resistance trajectory in malaria-endemic settings, where selection from the antimalarial chloroquine for fluoroquinolone-resistant ...
A Oladipo Aboderin   +6 more
core   +2 more sources

Genomic Insights Into Spatiotemporal Dynamics of Acquired Azithromycin Resistance Genes in Salmonella Strains Worldwide

open access: yesFood Safety and Health, EarlyView.
ABSTRACT Azithromycin has been used for clinical invasive infections caused by fluoroquinolone‐ and third‐generation cephalosporin‐resistant Salmonella, and mass drug administration with azithromycin has been used to reduce under‐5 mortality in children in some countries.
Yuhang Pei   +4 more
wiley   +1 more source

The prevalence of plasmid-mediated quinolone resistance and ESBL-production in Enterobacteriaceae isolated from urinary tract infections

open access: yesInfection and Drug Resistance, 2018
Introduction β-lactam and fluoroquinolone antibiotics are usually used for the treatment of urinary tract infections (UTIs). The aim of this study was to determine the prevalence of plasmid-mediated quinolone resistance (PMQR) and extended spectrum β ...
R. Azargun   +6 more
semanticscholar   +1 more source

Extended-spectrum β-lactamases, transferable quinolone resistance, and virulotyping in extra-intestinal E. coli in Uruguay [PDF]

open access: yes, 2016
Introduction: To characterize extended-spectrum β-lactamases (ESBLs) and plasmid-mediated quinolone resistance (PMQR) genes in Escherichia coli isolates obtained from extra-intestinal samples in three Uruguayan hospitals.
Aguerrebere, Paula   +10 more
core   +3 more sources

Potent monoclonal antibodies against multidrug‐resistant hypervirulent Klebsiella pneumoniae

open access: yesInterdisciplinary Medicine, EarlyView.
A novel immunization strategy using a low‐virulence, multidrug‐resistant strain yields synergistic monoclonal antibodies against hypervirulent Klebsiella pneumoniae. These antibodies provide cross‐serotype protection through a dual‐mechanism of pathogen clearance and immunomodulation, offering a promising non‐antibiotic therapeutic for resistant ...
Yushan Jiang   +10 more
wiley   +1 more source

Characterization of carbapenemases, ESBLs, and plasmid-mediated quinolone determinants in carbapenem-insensitive Escherichia coli and Klebsiella pneumoniae in Riyadh hospitals.

open access: yesJournal of Infection and Public Health, 2018
The main objective of this work was to characterize carbapenemases, extended-spectrum β-lactamases (ESBLs), and plasmid-mediated quinolone resistance (PMQR) among carbapenem-insensitive Klebsiella pneumoniae and Escherichia coli clinical isolates which ...
M. Al-agamy   +3 more
semanticscholar   +1 more source

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