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Volume 11, Number 6—June 2005

Dispatch

armA and Aminoglycoside Resistance in Escherichia coli

Bruno González-Zorn*, Tirushet Teshager*, María Casas†, María C. Porrero*, Miguel A. Moreno*Comments to Author , Patrice Courvalin‡, and Lucas Domínguez*
Author affiliations: *Universidad Complutense de Madrid, Madrid, Spain; †Laboratorios Ovis, Barcelona, Spain; ‡Institut Pasteur, Paris, France

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Table

Minimum inhibitory concentrations (MICs) of various antimicrobial agents for Escherichia coli MUR050 and E. coli with and without armA


MIC (μg/mL)*
E. coli Amikacin Tobramycin Netilmicin Gentamicin Ciprofloxacin
MUR050 >256 >256 >256 >256 >32
INVαF´ 0.5 0.5 0.5 0.75 0.002
INVαF´ (pMUR050) >256 >256 >256 >256 0.002
INVαF´ (p18MUR050) >256 >256 >256 >256 0.002
INVαF´ (parmA) >256 >256 >256 >256 0.002

*MICs were determined by Etest (AB Biodisk).

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