Mechanisms of resistance to quinolones and clinical perspectives
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چکیده
منابع مشابه
Mechanisms of resistance to quinolones.
The increased use of fluoroquinolones has led to increasing resistance to these antimicrobials, with rates of resistance that vary by both organism and geographic region. Resistance to fluoroquinolones typically arises as a result of alterations in the target enzymes (DNA gyrase and topoisomerase IV) and of changes in drug entry and efflux. Mutations are selected first in the more susceptible t...
متن کامل[Mechanisms of plasmid-mediated resistance to quinolones].
Quinolone resistance is caused mainly by chromosomal mutations in gram negative bacteria. In 1998, plasmid-mediated resistance to quinolones in clinical isolates was first reported in a Klebsiella pneumoniae strain. Locus qnr (quinolone resistance) was responsible of the quinolone resistance in this plasmid. qnr codes a protein whose function is protect both DNA-girase and topoisomerase IV from...
متن کاملResistance to quinolones in mycobacteria.
Ohno, H., Koga, H., Kohno, S.. Higashiyama, Y., Miyazaki, Y., Ogawa, K., Yanagihra, K., Yamamoto, Y., Noda, T. & Miyamoto, J. (1994), Evaluation for rapid detection of rifampiein-rcsistant MycobacteHum tuberculosis by polymerase chain reaction-single strand conformation polymorphism. Kekkaku, 69, 773-778. Predieh, M., Doukhan, L., Nair, G. & Smith, I. (1995), Characterization of RNA polymerase ...
متن کاملAntimicrobial susceptibility and mechanisms of resistance to quinolones and beta-lactams in Acinetobacter genospecies 3.
Antimicrobial susceptibility was determined in 15 epidemiologically unrelated clinical isolates of Acinetobacter genospecies 3. Moreover, the mechanisms of resistance to some beta-lactam antibiotics may be associated with the presence of a chromosomal cephalosporinase, AmpC, and the resistance to quinolones related to mutations in the gyrA and parC genes.
متن کاملMECHANISMS OF RESISTANCE TO QUINOLONES AND EPIDEMIOLOGICAL SIGNIFICANCE OF Salmonella spp
Bacteria develop resistance to antimicrobial agents by a number of different mechanisms. The resistance to (fluoro)quinolones in Salmonella is of particular importance especially if therapy in humans is required. For decades there has been a significant interest in studying the biology of Salmonella because these bacteria are among the leading causes of foodborne illnesses around the globe. To ...
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ژورنال
عنوان ژورنال: Journal of Antimicrobial Chemotherapy
سال: 1989
ISSN: 0305-7453,1460-2091
DOI: 10.1093/jac/23.4.475