MexCD-OprJ Multidrug Efflux System of Pseudomonas aeruginosa: Involvement in Chlorhexidine Resistance and Induction by Membrane-Damaging Agents Dependent upon the AlgU Stress Response Sigma Factor

被引:117
作者
Fraud, Sebastien [1 ]
Campigotto, Aaron J. [1 ]
Chen, Zhilin [1 ]
Poole, Keith [1 ]
机构
[1] Queens Univ, Dept Microbiol & Immunol, Kingston, ON K7L 3N6, Canada
关键词
D O I
10.1128/AAC.01072-08
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The biocide chlorhexidine (CHX) as well as additional membrane-active agents were shown to induce expression of the mexCD-oprJ multidrug efflux operon, dependent upon the AlgU stress response sigma factor. Hyperexpression of this efflux system in nfxB mutants was also substantially AlgU dependent. CHX resistance correlated with efflux gene expression in various mutants, consistent with MexCD-OprJ being a determinant of CHX resistance.
引用
收藏
页码:4478 / 4482
页数:5
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