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Plasmid-mediated quinolone resistance
Expert Review of Anti-Infective Therapy, 2008The first plasmid-mediated gene involved in quinolone resistance (qnrA1) was reported in 1998. It codes for a pentapeptide-repeat protein that protects type II topoisomerases from quinolones. Additional related plasmid-mediated genes (qnrB, qnrS and qnrC) and chromosomal homologs of them have also been discovered.
Luis Martínez-Martínez +2 more
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Quinolone Resistance Determinants of Clinical Salmonella Enteritidis in Thailand [PDF]
Microbial Drug Resistance, 2017 Salmonella Enteritidis has emerged as a global concern regarding quinolone resistance and invasive potential. Although quinolone-resistant S. Enteritidis has been observed with high frequency in Thailand, information on the mechanism of resistance ...
Fuangfa Utrarachkij +2 more
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Mechanisms of Resistance to Quinolones
Drugs, 1993Mechanisms of resistance to the quinolones have been described for several bacterial species, but mainly for Escherichia coli and Staphylococcus aureus. Two principal mechanisms have been described: 1) alteration of the DNA gyrase, which is the target site of the quinolones; and 2) diminished accumulation in the cell as a result of either decreased ...
E, Cambau, L, Gutmann
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Quinolone resistance in the food chain
International Journal of Antimicrobial Agents, 2008Antimicrobials are used in pet animals and in animal husbandry for prophylactic and therapeutic reasons and also as growth promoters, causing selective pressure on bacteria of animal origin. The impact of quinolones or quinolone-resistant bacteria on the management of human infections may be associated with three different scenarios.
Anna Fabrega +2 more
exaly +3 more sources
Mechanisms of quinolone resistance
Infection, 1994Two mechanisms of resistance to fluoroquinolones are known: (i) alteration of the molecular target of quinolone action-DNA gyrase, and (ii) reduction of the quinolone accumulation. Mutations altering the N-terminus of the gyrase A subunit, especially those around residues Ser83 and Asp87, significantly reduce the susceptibilities towards all quinolones,
B, Wiedemann, P, Heisig
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Transferable mechanisms of quinolone resistance
International Journal of Antimicrobial Agents, 2012Quinolones were introduced into clinical practice in the late 1960s. Although quinolone resistance was described early, no transferable mechanism of quinolone resistance (TMQR) was confirmed until 1998. To date, five different TMQRs have been described in the literature, including target protection (Qnr), quinolone modification (AAC(6')-Ib-cr), plasmid-
Joaquim Ruiz +2 more
exaly +3 more sources
2003
Quinolone antibacterial agents were first introduced into the clinical environment in the early 1960s. The first qumolone to be clinically used was nalidixic acid, which was used for the treatment of enteric and urinary tract infections. As a result of increased clinical resistance to this drug, its use has declined.
J C, Brown, S G, Amyes
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Quinolone antibacterial agents were first introduced into the clinical environment in the early 1960s. The first qumolone to be clinically used was nalidixic acid, which was used for the treatment of enteric and urinary tract infections. As a result of increased clinical resistance to this drug, its use has declined.
J C, Brown, S G, Amyes
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Resistance Mechanism of Carbapenem-Resistant Enterobacteriaceae to Quinolones
Clinical Laboratory, 2021To investigate the epidemics of plasmid-mediated quinolone resistance (PMQR) gene in carbapenem-resistant Enterobacteriaceae (CRE) and the resistance mechanism.We collected CRE bacteria isolated clinically between December 2017 and December 2018 for identification and drug sensitivity testing using a VITEK2 Compact Analyzer.
Ming, Wei, Na, Tu, Kai, Yang
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