Simultaneous overexpression of the MexAB-OprM and MexXY efflux systems was
demonstrated by real-time reverse transcription-PCR and immunoblotting experiments for …

ABSTRACT During a 6-month period, 21 pairs of Pseudomonas aeruginosa isolates
susceptible (pretherapy) and resistant (posttherapy) to antipseudomonal β-lactam antibiotics …

To test the possibility that MexX-MexY, a new set of efflux system components, is associated
with OprM and contributes to intrinsic resistance in Pseudomonas aeruginosa, we …

ABSTRACT Simultaneous overexpression of MexAB-OprM and MexEF-OprN was
demonstrated for a multiply antibiotic-resistant clinical isolate of Pseudomonas aeruginosa …

The mexCD-oprJ and mexAB-oprM operons encode components of two distinct multidrug
efflux pumps in Pseudomonas aeruginosa. To assess the contribution of individual …

Several nalB-type multidrug-resistant mutants of Pseudomonas aeruginosa overexpressed
MexAB-OprM and carried mutations in the local regulatory gene, mexR. Others, dubbed …

We found three variations of wild-type strains in terms of mexT-mediated regulation of the
MexEF-OprN efflux pump, in which overexpression of the pump results in nfxC-type …

Mutations in genes mexR and nalC have previously been shown to drive overexpression of
the MexAB-OprM multidrug efflux system in Pseudomonas aeruginosa. A transposon …

We have earlier described mexA-mexB-oprK, an operon involved in pyoverdine export in
Pseudomonas aeruginosa, and suggested that the products of these genes also contribute …

ABSTRACT The MexZ–MexX–MexY multidrug efflux system in Pseudomonas aeruginosa
was studied to determine its contribution to aminoglycoside resistance. Amikacin-resistant …