Macrolide Antibiotic-Mediated Downregulation of MexAB-OprM Efflux Pump Expression in Pseudomonas aeruginosa

被引:18
作者
Sugimura, Makoto [2 ]
Maseda, Hideaki [3 ]
Hanaki, Hideaki [1 ]
Nakae, Taiji [1 ]
机构
[1] Kitasato Inst Univ, Lab Antiinfect Drugs, Sagamihara, Kanagawa 2288555, Japan
[2] Kitasato Inst Univ, Grad Sch Med Sci, Sagamihara, Kanagawa 2288555, Japan
[3] Fac Engn, Dept Biol Sci & Technol, Tokushima 7708605, Japan
关键词
D O I
10.1128/AAC.00511-08
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Macrolide antibiotics modulate the quorum-sensing system of Pseudomonas aeruginosa. We tested the effect of macrolide antibiotics on the cell density-dependent expression of the MexAB-OprM efflux pump and found that 1.0 mu g/ml (MIC/6.25) of azithromycin suppressed the expression of MexAB-OprM by about 70%, with the result that the cells became two- to fourfold more susceptible to antibiotics such as aztreonam, tetracycline, carbenicillin, chloramphenicol, and novobiocin.
引用
收藏
页码:4141 / 4144
页数:4
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