(1993). AmpG, a signal transducer in chromosomal beta-lactamase induction. Mol. Microbiol. 9(4):703-715.Lindquist S, Weston-Hafer K, Schmidt H, Pul C, Korfmann G, Erikson J, Sanders C, Martin HH, Normark S (1993) AmpG, a signal transducer in chromosomal β-lactamase induction. Mol...
The aim of the present study was to understand reasons underlying differential inducible production of BlaB, an “AmpC-type” β-lactamase in Y. enterocolitica strains of biotypes 1 A, 1B, 2 and 4. Our results indicated that BlaB was inducible in strains of biotypes 1 A, 1B, 2 ...
We report here the study of a new chromosomal AmpC β-lactamase produced by E. cloacae FFUL2En isolated from the blood culture of a patient hospitalized in a medicine ward of Hospital de Santa Maria, Lisbon, Portugal. The antibiogram revealed resistance to aminopenicillins, aztreonam, and ...
Department of Bacteriology, Aarhus Kommunehospital, DK-8000, Aarhus C, Denmark P. Søgaard & P. Tauris Rights and permissions Søgaard, P., Tauris, P. Bacteraemia caused byEscherichia coliand byEnterobacteriaceaeproducing inducible chromosomal beta-lactamases.Eur. J. Clin. Microbiol. Infect. Di...
In the last decades, Inc A/C plasmids have been associated with the spread of the AmpC beta lactamase CMY-2, in strains isolated from human, beef, chicken, turkey, and pork, revealing that this common plasmid backbone is broadly disseminated among resistant zoonotic pathogens.9, 43 In our ...
Mutations in the c-ampC attenuator regions are likely to be maintained and are one of the key factors contributing to the increase in the number of cefazolin-resistant E. coli worldwide. IMPORTANCE This study is the first to demonstrate that mutations in the chromosomal-ampC attenuator region ...
AmpG, a signal transducer in chromosomal -lactamase induction - Lindquist, Weston-Hafer, et al. - 1993Lindquist S, Weston-Hafer K, Schmidt H, Pul C, Korfmann G, Erickson J, Sanders C, Martin H, Normark S (1993) AmpG, a signal transducer in chromosomal beta-lactamase induction. Mol ...
Most Escherichia coli strains overproducing chromosomal AmpC beta-lactamase belong to phylogenetic group A. J Antimicrob Chemother 2007; 60: 872-876.Corvec S, Prodhomme A, Giraudeau C, Dauvergne S, Reynaud A, Caroff N. Most Escherichia coli strains overproducing chromo- somal AmpC beta-...
In vitro activity of cefepime against derepressed mutants of beta-lactamase-inducible species of Enterobacteriaceae was studied. Chromosomal beta-lactamase derepression (constitutive hyperproduction) was detected in 25.9% of isolates (165 of 636). Constitutive AmpC beta-lactamase hyperproducers included: ...
Most Escherichia coli strains overproducing chromosomal ampC beta-lactamase belong to phylogenetic group A. J Antimicrob Chemother 2007; 60 (4): 872-6.Corvec, S., A. Prodhomme, C. Giraudeau, S. Dauvergne, A. Reynaud, and N. Caroff. 2007. Most Escherichia coli strains overproducing ...