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High-level Fluoroquinolone-resistant Clinical Isolates of Escherichia Coli Overproduce Multidrug Efflux Protein AcrA

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Specialty Pharmacology
Date 2000 Nov 18
PMID 11083655
Citations 47
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Abstract

Immunoblotting with antibody against AcrA, an obligatory component of the AcrAB multidrug efflux system, showed that this protein was overexpressed by >/=170% in 9 of 10 clinical isolates of Esherichia coli with high-level ciprofloxacin resistance (MICs, >/=32 microg/ml) but not in any of the 15 isolates for which the MIC was </=1 microg/ml.

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