High-level fluoroquinolone-resistant clinical isolates of Escherichia coli overproduce multidrug efflux protein AcrA

被引:106
作者
Mazzariol, A
Tokue, Y
Kanegawa, TM
Cornaglia, G
Nikaido, H
机构
[1] Univ Calif Berkeley, Dept Cell & Mol Biol, Berkeley, CA 94720 USA
[2] Univ Verona, Dept Pathol, Microbiol Sect, I-37100 Verona, Italy
关键词
D O I
10.1128/AAC.44.12.3441-3443.2000
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Immunoblotting with antibody against AcrA, an obligatory component of the AcrAB multidrug efflux system, showed that this protein was overexpressed by greater than or equal to 170% in 9 of 10 clinical isolates of Esherichia coli with high-level ciprofloxacin resistance (MICs, greater than or equal to 32 mug/ml) but not in any of the 15 isolates for which the MIC was less than or equal to1 mug/ml.
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页码:3441 / 3443
页数:3
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