Results 21 to 30 of about 45,473 (217)

A Clinical Extensively-Drug Resistant (XDR) Escherichia coli and Role of Its β-Lactamase Genes

open access: yesFrontiers in Microbiology, 2020
An extensively-drug resistant (XDR) Escherichia coli W60 was isolated from the urine sample of a patient. The genetic basis for its XDR phenotype was investigated, particularly the basis for its resistance toward β-lactam/BLI (β-Lactamase Inhibitor ...
Mingyu Wang   +10 more
doaj   +1 more source

Antibiotic Resistance in Pseudomonas Aeruginosa is Associated with Decreased Fitness

open access: yesCellular Physiology and Biochemistry, 2013
The number of clinical specimens containing β-lactam-resistant Pseudomonas aeruginosa isolates is increasing. However, whether resistance is associated with reduced fitness is still uncertain in clinical Pseudomonas aeruginosa isolates. In this study, we
Zhenzhen Sun   +6 more
doaj   +1 more source

Synergistic Combinations of FDA-Approved Drugs with Ceftobiprole against Methicillin-Resistant Staphylococcus aureus

open access: yesMicrobiology Spectrum, 2023
New strategies are urgently needed to address the public health threat of antimicrobial resistance. Synergistic agent combinations provide one possible pathway toward addressing this need and are also of fundamental mechanistic interest.
Amar Deep Sharma, William G. Gutheil
doaj   +1 more source

Molecular Basis of Non-β-Lactam Antibiotics Resistance in Staphylococcus aureus

open access: yesAntibiotics, 2022
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most successful human pathogens with the potential to cause significant morbidity and mortality.
Harshad Lade   +2 more
doaj   +1 more source

Intrinsic Class D β-Lactamases of Clostridium difficile

open access: yesmBio, 2018
Clostridium difficile is the causative agent of the deadly C. difficile infection. Resistance of the pathogen to β-lactam antibiotics plays a major role in the development of the disease, but the mechanism of resistance is currently unknown.
Marta Toth   +3 more
doaj   +1 more source

Restricted Sequence Variation in Streptococcus pyogenes Penicillin Binding Proteins

open access: yesmSphere, 2020
A recent clinical report has linked Streptococcus pyogenes β-lactam antibiotic resistance to mutation in the penicillin binding protein (PBP) PBP2x. To determine whether this is an isolated case or reflects a broader prevalence of mutations that might ...
Andrew Hayes   +4 more
doaj   +1 more source

Profiles of phenotype resistance to antibiotic other than β-lactams in Klebsiella pneumoniae ESBLs-producers, carrying blaSHV genes.

open access: yesFolia Histochemica et Cytobiologica, 2011
Extended spectrum β-lactamases production is one of the most common mechanism of resistance to extended spectrum β-lactam antibiotics is increasing worldwide. Twenty five strains of Klebsiella pneumoniae isolated from clinical specimens were tested. Based on the phenotypic confirmatory test all these strains were defined as ESBL producers named ESBL(+).
Małgorzata Krawczyk   +8 more
openaire   +5 more sources

Divergent Effects of Peptidoglycan Carboxypeptidase DacA on Intrinsic β-Lactam and Vancomycin Resistance

open access: yesMicrobiology Spectrum, 2022
Vancomycin and β-lactams are clinically important antibiotics that inhibit the formation of peptidoglycan cross-links, but their binding targets are different.
Si Hyoung Park   +5 more
doaj   +1 more source

Signal Peptidase-Mediated Cleavage of the Anti-σ Factor RsiP at Site 1 Controls σP Activation and β-Lactam Resistance in Bacillus thuringiensis

open access: yesmBio, 2022
In Bacillus thuringiensis, β-lactam antibiotic resistance is controlled by the extracytoplasmic function (ECF) σ factor σP. σP activity is inhibited by the anti-σ factor RsiP. In the presence of β-lactam antibiotics, RsiP is degraded and σP is activated.
Kelsie M. Nauta   +2 more
doaj   +1 more source

Synthetic Lethality Reveals Mechanisms of Mycobacterium tuberculosis Resistance to β-Lactams

open access: yesmBio, 2014
Most β-lactam antibiotics are ineffective against Mycobacterium tuberculosis due to the microbe’s innate resistance. The emergence of multidrug-resistant (MDR) and extensively drug-resistant (XDR) strains has prompted interest to repurpose this class of ...
Shichun Lun   +7 more
doaj   +1 more source

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