Results 11 to 20 of about 9,189 (185)

In Vitro Activities of Ceftazidime–Avibactam and Aztreonam–Avibactam at Different Inoculum Sizes of Extended-Spectrum β-Lactam-Resistant Enterobacterales Blood Isolates

open access: yesAntibiotics, 2021
β-lactam–avibactam combinations have been proposed as carbapenem-sparing therapies, but little data exist on their in vitro activities in infections with high bacterial inocula.
Moonsuk Bae, Taeeun Kim, Joung Ha Park
exaly   +4 more sources

The Revival of Aztreonam in Combination with Avibactam against Metallo-β-Lactamase-Producing Gram-Negatives: A Systematic Review of In Vitro Studies and Clinical Cases [PDF]

open access: yesAntibiotics, 2021
Infections caused by metallo-β-lactamase (MBL)-producing Enterobacterales and Pseudomonas are increasingly reported worldwide and are usually associated with high mortality rates (>30%).
Carola Mauri   +2 more
exaly   +6 more sources

Struggle To Survive: the Choir of Target Alteration, Hydrolyzing Enzyme, and Plasmid Expression as a Novel Aztreonam-Avibactam Resistance Mechanism

open access: yesMSystems, 2020
Aztreonam-avibactam is a promising antimicrobial combination against multidrug-resistant organisms, such as carbapenemase-producing Enterobacterales. Resistance to aztreonam-avibactam has been found, but the resistance mechanism remains poorly studied ...
Yu Feng, Alan Mcnally, Zhiyong Zong
exaly   +4 more sources

In Vitro Susceptibility of Aztreonam-Vaborbactam, Aztreonam-Relebactam and Aztreonam-Avibactam Associations against Metallo-β-Lactamase-Producing Gram-Negative Bacteria

open access: yesAntibiotics, 2023
Background: Despite the availability of new options (ceftazidime-avibactam, imipenem-relebactam, meropenem-vaborbactam and cefiderocol), it is still very difficult to treat infections caused by metallo-β-lactamase (MBLs)-producers resistant to aztreonam.
Cécile Emeraud   +2 more
doaj   +2 more sources

Aztreonam-avibactam synergy, a validation and comparison of diagnostic tools [PDF]

open access: yesFrontiers in Microbiology, 2023
IntroductionAntimicrobial resistance is a growing problem that necessitates the development of new therapeutic options. Cefiderocol and aztreonam (AT) are often the last active β-lactams for treating metallo-β-lactamases (MBL)-producing Gram-negative bacilli.
Gil Verschelden   +12 more
core   +8 more sources

Rapid Aztreonam/Avibactam NP test for detection of aztreonam/avibactam susceptibility/resistance in Enterobacterales. [PDF]

open access: yesJ Clin Microbiol, 2023
ABSTRACT Aztreonam-avibactam (AZA), a newly developed β-lactam/β-lactamase inhibitor combination , is a treatment option for infections due to carbapenem-resistant Enterobacterales (CRE), including metallo-ß-lactamase producers, regardless of additional production of broad-spectrum serine-ß-lactamases ...
Viguier C   +5 more
europepmc   +4 more sources

Selection and characterization of mutational resistance to aztreonam/avibactam in β-lactamase-producing Enterobacterales [PDF]

open access: yesJournal of Antimicrobial Chemotherapy, 2021
Abstract Background Aztreonam/avibactam is being developed for its broad activity against carbapenemase-producing Enterobacterales, including those with metallo-β-lactamases (MBLs). Its potential to select resistance in target pathogens was explored.
Mushtaq, Shazad   +4 more
openaire   +5 more sources

In Vitro Evaluation of the Activity of Aztreonam-Avibactam against 341 Recent Clinical Isolates of Anaerobes

open access: yesMicrobiology Spectrum, 2021
Aztreonam-avibactam is under clinical development for multidrug-resistant Gram-negative infections. We evaluated in vitro activity against 341 recent clinical isolates.
David R. Snydman, Laura McDermott
doaj   +3 more sources

Resistance to aztreonam-avibactam due to a mutation of SHV-12 in Enterobacter

open access: yesAnnals of Clinical Microbiology and Antimicrobials, 2023
Aztreonam-avibactam is an important option against Enterobacterales producing metallo-β-lactamases (MBLs). We obtained an aztreonam-avibactam-resistant mutant of an MBL-producing Enterobacter mori strain by induced mutagenesis. Genome sequencing revealed
Shikai Wu, Ke Ma, Yu Feng, Zhiyong Zong
doaj   +3 more sources

Molecular characterization of clinical isolates of Enterobacterales with elevated MIC values for aztreonam-avibactam from the INFORM global surveillance study, 2012–2017

open access: yesJournal of Global Antimicrobial Resistance, 2021
Objectives: While aztreonam-avibactam is a potent β-lactam-β-lactamase-inhibitor combination, reduced in vitro activity against some Enterobacterales isolates has been reported. In this study, globally collected clinical isolates of Enterobacterales with
Krystyna M Kaźmierczak   +2 more
exaly   +3 more sources

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