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J Antimicrob Chemother. 2003 May;51(5):1109-17. Epub 2003 Apr 14.

Mechanisms of resistance to quinolones: target alterations, decreased accumulation and DNA gyrase protection.

Author information

1
Department of Microbiology, Institut Clínic Infeccions i Immunologia, Hospital Clínic, C/.Villarroel 170, 08036-Barcelona, Spain. joruiz@clinic.ub.es

Abstract

Quinolones are broad-spectrum antibacterial agents, commonly used in both clinical and veterinary medicine. Their extensive use has resulted in bacteria rapidly developing resistance to these agents. Two mechanisms of quinolone resistance have been established to date: alterations in the targets of quinolones, and decreased accumulation due to impermeability of the membrane and/or an overexpression of efflux pump systems. Recently, mobile elements have also been described, carrying the qnr gene, which confers resistance to quinolones.

PMID:
12697644
DOI:
10.1093/jac/dkg222
[Indexed for MEDLINE]

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