Results 111 to 120 of about 3,945 (212)

Increased expression of Qnr is sufficient to confer clinical resistance to ciprofloxacin in Escherichia coli

open access: yes, 2017
Background: Ciprofloxacin, a fluoroquinolone, targets two essential bacterial enzymes, DNA gyrase and topoisomerase IV. Plasmid-borne qnr genes, encoding proteins that protect DNA gyrase and topoisomerase IV from inhibition by fluoroquinolones ...
Garoff, Linnéa,   +8 more
core   +1 more source

A longitudinal epidemiology study of fluoroquinolone-nonsusceptible Klebsiella pneumoniae reveals an increasing prevalence of qnrB and qnrS in Taiwan

open access: yes
Background: Our objective was to investigate the prevalence of plasmid-mediated quinolone resistance (PMQR) genes in fluoroquinolone-nonsusceptible Klebsiella pneumoniae (FQNSKP) in Taiwan, 1999–2022.
Shu-Fei Tang   +11 more
core   +1 more source

Plasmid-Mediated Quinolone Resistance (PMQR) Genes and Class 1 Integrons in Quinolone-Resistant Marine Bacteria and Clinical Isolates of Escherichia coli from an Aquacultural Area

open access: yes, 2017
Antimicrobial usage in aquaculture selects for antimicrobial-resistant microorganisms in the marine environment. The relevance of this selection to terrestrial animal and human health is unclear.
Buschmann, Alejandro H.   +9 more
core   +1 more source

Occurrence of Extended-Spectrum Beta-Lactamase and Quinolone Resistance Genes among Escherichia coli and Klebsiella pneumoniae Isolated from Poultry, Domestic Pigs and Environ in Msimbazi River Basin in Tanzania

open access: yesJournal of Applied Sciences and Environmental Management
We investigated the occurrence and distribution of genes encoding for extended-spectrum beta-lactamase (ESBL) production and quinolone resistance among multi-drug resistant (MDR) Escherichia coli and Klebsiella pneumoniae isolated from poultry, domestic
Z. I. Kimera   +4 more
doaj   +1 more source

Antibiotic resistance and resistance genes in Escherichia coli from poultry farms, southwest Nigeria

open access: yesJournal of Infection in Developing Countries, 2014
Introduction: This study investigated the mechanisms of resistance in 36 E. coli isolated from waste, litter, soil and water samples collected from poultry farms in Southwestern Nigeria.
Olawale O Adelowo   +2 more
doaj   +1 more source

Identification of the qnr family in Enterobacteriaceae in clinical practice [PDF]

open access: yesJournal of Antimicrobial Chemotherapy, 2009
S M, Naqvi   +3 more
openaire   +2 more sources

[qnr genes in Enterobacteriaceae isolated from at a hospital in Venezuela].

open access: yesRevista chilena de infectologia : organo oficial de la Sociedad Chilena de Infectologia, 2018
Enterobacteria resistant to quinolones is increasing worldwide, including Venezuela. The mechanism for this resistance could be due to genes included in the chromosome or in transmissible plasmids.To evaluate the resistance to quinolones, coded by qnr genes present in enterobacteria species, isolated in the University Hospital of Cumana, Venezuela ...
José, García   +7 more
openaire   +1 more source

Bacteriophages as a reservoir of extended-spectrum β -lactamase and fluoroquinolone resistance genes in the environment

open access: yes, 2014
Six antibiotic resistance genes (blaCTX-M, blaSHV, blaTEM, qnrA, qnrB and qnrS) were quantified by qPCR in both phage and bacterial DNA fractions of environmental water samples in order to determine the contribution of phages to the dissemination of ...
Variatza, E., Balcázar, J.L., Marti, E.
core   +1 more source

Determinação da prevalência de genes qnr em isolados clínicos de Escherichia coli [PDF]

open access: yes, 2008
Mestrado em MicrobiologiaA resistência aos antimicrobianos é um problema crescente no contexto clínico actual, afectando seriamente o resultado dos tratamentos das doenças infecciosas e o futuro da antibioterapia.
Santos, Márcia Liane Klauck
core  

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