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.
10.3349/ymj.2011.52.1.188
- Author:
In Suk KIM
1
;
Nam Yong LEE
;
Sunjoo KIM
;
Chang Seok KI
;
Sun Hee KIM
Author Information
1. Department of Laboratory Medicine, Gyeongsang National University College of Medicine, Jinju, Korea.
- Publication Type:Brief Communication ; Research Support, Non-U.S. Gov't
- Keywords:
Haemophilus influenzae;
levofloxacin;
quinolone;
drug resistance;
DNA gyrase;
DNA topoisomerases;
Type II
- MeSH:
Anti-Bacterial Agents/*pharmacology;
DNA Gyrase/*genetics;
DNA Topoisomerases, Type II/*genetics;
Haemophilus influenzae/*drug effects/pathogenicity;
Korea;
Microbial Sensitivity Tests;
Mutation;
Ofloxacin/*pharmacology
- From:Yonsei Medical Journal
2011;52(1):188-191
- CountryRepublic of Korea
- Language:English
-
Abstract:
Among 155 clinical respiratory isolates of Haemophilus influenzae in Korea, 6 (3.9%) isolates had reduced levofloxacin susceptibility (MICs > or = 0.5 microg/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.
