Reduced Levofloxacin Susceptibility in Clinical Respiratory Isolates of Haemophilus Influenzae Is Not yet Associated with Mutations in the DNA Gyrase and Topoisomerase II Genes in Korea

Among 155 clinical respiratory isolates of Haemophilus influenzae in Korea, 6 (3.9%) isolates had reduced levofloxacin susceptibility (MICs ≥ 0.5 µg/mL). These six isolates had no significant quinolone resistance-determining region (QRDR) mutations in gyrA, gyrB, parC, or parE. This phenomenon sugge...

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Detalles Bibliográficos
Autores principales: Kim, In-Suk, Lee, Nam Yong, Kim, Sunjoo, Ki, Chang-Seok, Kim, Sun-Hee
Formato: Texto
Lenguaje:English
Publicado: Yonsei University College of Medicine 2011
Materias:
Brief Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3017696/
https://www.ncbi.nlm.nih.gov/pubmed/21155053
http://dx.doi.org/10.3349/ymj.2011.52.1.188
Descripción
Sumario:Among 155 clinical respiratory isolates of Haemophilus influenzae in Korea, 6 (3.9%) isolates had reduced levofloxacin susceptibility (MICs ≥ 0.5 µg/mL). These six isolates had no significant quinolone resistance-determining region (QRDR) mutations in gyrA, gyrB, parC, or parE. This phenomenon suggests that neither evolution nor spread of any significant QRDRs mutations in clinical isolates occurred in Korea. Therefore, continued surveillance is necessary to observe the evolution of antibiotic-resistance and take measures to avoid the spread of drug-resistant clones.

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