SmeC, an Outer Membrane Multidrug Efflux Protein of Stenotrophomonas maltophilia
نویسندگان
چکیده
منابع مشابه
Overexpression of the multidrug efflux pump SmeDEF impairs Stenotrophomonas maltophilia physiology.
OBJECTIVES The use of antibiotics for the treatment of infectious diseases has led to important changes in the structure of pathogenic bacterial populations. However, these changes could be buffered if the expression of antibiotic resistance genes were to lead to the counter-selection of antibiotic-resistant strains in antibiotic-free environments. To test the effect of antibiotic resistance on...
متن کاملMultiple antibiotic resistance in Stenotrophomonas maltophilia: involvement of a multidrug efflux system.
Clinical strains of Stenotrophomonas maltophilia are often highly resistant to multiple antibiotics, although the mechanisms of resistance are generally poorly understood. Multidrug resistant (MDR) strains were readily selected by plating a sensitive reference strain of the organism individually onto a variety of antibiotics, including tetracycline, chloramphenicol, ciprofloxacin, and norfloxac...
متن کاملCloning and characterization of SmeDEF, a novel multidrug efflux pump from Stenotrophomonas maltophilia.
Stenotrophomonas maltophilia is a nosocomial bacterial pathogen intrinsically resistant to several antibiotics. The mechanisms involved in this intrinsic multiresistance phenotype are poorly understood. A library of chromosomal DNA from a spontaneous multidrug-resistant S. maltophilia D457R mutant (A. Alonso and J. L. Martinez, Antimicrob. Agents Chemother. 41:1140-1142, 1997) was screened for ...
متن کاملIntra- and Interspecies Effects of Outer Membrane Vesicles from Stenotrophomonas maltophilia on β-Lactam Resistance.
The treatment ofStenotrophomonas maltophiliainfection with β-lactam antibiotics leads to increased release of outer membrane vesicles (OMVs), which are packed with two chromosomally encoded β-lactamases. Here, we show that these β-lactamase-packed OMVs are capable of establishing extracellular β-lactam degradation. We also show that they dramatically increase the apparent MICs of imipenem and t...
متن کاملExpression and Functions of CreD, an Inner Membrane Protein in Stenotrophomonas maltophilia
CreBC is a highly conserved two-component regulatory system (TCS) in several gram-negative bacteria, including Escherichia coli, Aeromonas spp., Pseudomonas aeruginosa, and Stenotrophomonas maltophilia. CreD is a conserved gene that encodes a predicted inner-membrane protein and is located near the creBC loci. Activation of CreBC increases creD expression; therefore, creD expression is generall...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Antimicrobial Agents and Chemotherapy
سال: 2002
ISSN: 0066-4804,1098-6596
DOI: 10.1128/aac.46.2.333-343.2002