Results 41 to 50 of about 2,940,166 (197)

Beta-lactam-specific resistant mutants of Staphylococcus aureus [PDF]

Antimicrobial Agents and Chemotherapy, 1986
In an approach to understanding the origin of methicillin resistance in clinical isolates of staphylococci, a series of Staphylococcus aureus mutants resistant to various beta-lactam antibiotics were isolated in the laboratory by antibiotic selection. Mutants with low- and intermediate-level resistance showed considerable specificity for the particular
TONIN, ENRICO ANGELO, TOMASZ A.
openaire   +3 more sources

The Relationship between Antimicrobial Use and Antimicrobial Resistance in Europe

Emerging Infectious Diseases, 2002
In Europe, antimicrobial resistance has been monitored since 1998 by the European Antimicrobial Resistance Surveillance System (EARSS). We examined the relationship between penicillin nonsusceptibility of invasive isolates of Streptococcus pneumoniae (an
Stef L.A.M. Bronzwaer, Otto Cars, Udo Buchholz, Sigvard Mölstad, Wim Goettsch, Irene K. Veldhuijzen, Jacob L. Kool, Marc J.W. Sprenger, John E. Degener   +8 more
doaj   +1 more source

Ceftriaxone-resistant salmonella enterica serotype Newport, France. [PDF]

, 2008
The multidrug-resistant (MDR) Salmonella enterica serotype Newport strain that produces CMY-2 beta-lactamase (Newport MDR-AmpC) was the source of sporadic cases and outbreaks in humans in France during 2000-2005.
Delauné, Aurélia, François-Xavier Weill, Sophie A. Granier, Whichard, Jean M., Mark Achtman, Sangal, Vartul, Millemann, Yves, Emmanuelle Espié, Patrick A.D. Grimont, Egorova, Svetlana, Mohammed Timinouni, Weill, François-Xavier, Marie Demartin, Vartul Sangal, Svetlana Egorova, Granier, Sophie, Demartin, Marie, Grimont, Patrick A. D., Granier, Sophie A., Yves Millemann, Achtman, Mark, Whichard, Jean, Fabre, Laëtitia, Pardos, Maria, Jean M. Whichard, Maria Pardos, Timinouni, Mohammed, Laëtitia Fabre, Aurélia Delauné, Espié, Emmanuelle, Grimont, Patrick   +30 more
core   +1 more source

Beta-lactamase induction and cell wall metabolism in Gram-negative bacteria

Frontiers in Microbiology, 2013
Production of beta-lactamases, the enzymes that degrade beta-lactam antibiotics, is the most widespread and threatening mechanism of antibiotic resistance.
Ximin eZeng, Jun eLin
doaj   +1 more source

Disruption of undecaprenyl phosphate recycling suppresses ampC beta-lactamase induction in Pseudomonas aeruginosa.

PLoS Pathogens
Beta-lactam antibiotics are widely used to treat bacterial infections, but their efficacy is compromised by resistance mechanisms such as the production of beta-lactamases.
Karina Klycheva, Joël Gyger, Mélissa Frund, Gabriel Torrens, Felipe Cava, Coralie Fumeaux   +5 more
doaj   +1 more source

Management of Beta-Lactam Antibiotics Allergy: A Real-Life Study

Frontiers in Allergy, 2022
Beta-lactam allergy is a common problem in everyday medical practice and is recognized as a major public health issue. Carrying this label frequently leads to the avoidance of all beta-lactam antibiotics, favoring the use of other less preferred classes ...
Sarah Iuliano, Sarah Iuliano, Laurence Senn, Laurence Senn, Laura Moi, Laura Moi, Yannick D. Muller, Yannick D. Muller, Camillo Ribi, Camillo Ribi, Guillaume Buss, Guillaume Buss, Denis Comte, Denis Comte   +13 more
doaj   +1 more source

A potential space-making role in cell wall biogenesis for SltB1and DacB revealed by a beta-lactamase induction phenotype in Pseudomonas aeruginosa

mBio
Pseudomonas aeruginosa encodes the beta-lactamase AmpC, which promotes resistance to beta-lactam antibiotics. Expression of ampC is induced by anhydro-muropeptides (AMPs) released from the peptidoglycan (PG) cell wall upon beta-lactam treatment. AmpC can
Joël Gyger, Gabriel Torrens, Felipe Cava, Thomas G. Bernhardt, Coralie Fumeaux   +4 more
doaj   +1 more source

Resistance of Pseudomonas aeruginosa to new beta-lactamase-resistant beta-lactams [PDF]

Antimicrobial Agents and Chemotherapy, 1984
An isogenic set of mutants of Pseudomonas aeruginosa, altered in permeability or permeability plus constitutive production of beta-lactamase, was examined for susceptibility to newer beta-lactam antibiotics. Kinetic data on the chromosomal beta-lactamase and susceptibility studies for the test beta-lactams indicate that permeability was the major ...
A J, Godfrey, L E, Bryan
openaire   +2 more sources

Mutations in beta-lactam resistance determining regions and beta lactam resistance profiles.

, 2018
Mutations in beta-lactam resistance determining regions and beta lactam resistance profiles.
Ajay Kumar Vijay (5802035), Gurjeet Singh Kohli (5802038), Scott A. Rice (143316), Dinesh Subedi (5802032), Mark Willcox (749527)   +4 more
core   +1 more source

Approaches to Testing Novel β-Lactam and β-Lactam Combination Agents in the Clinical Laboratory

, 2023
The rapid emergence of multi-drug resistant Gram-negative pathogens has driven the introduction of novel β-lactam combination agents (BLCs) to the antibiotic market: ceftolozane-tazobactam, ceftazidime-avibactam, meropenem-vaborbactam, imipenem ...
Carmella Russo, Romney Humphries
core   +1 more source