Results 11 to 20 of about 52,668 (245)
Virulence of non-β-lactamase-mediated ampicilin-resistantHaemophilus influenzae [PDF]
FEMS Microbiology Letters, 1991 We questioned whether strains of ampicillin-resistant, non-β-lactamase-producing (AmpR NBLP) Haemophilus influenae with lower affinity penicillin-binding proteins (PBPs) might have altered virulence. The virulence of resistant transformant strains and the susceptible recipient was compared using infant rats. Following intraperitoneal inoculation, there
Lorry G. Rubin +3 more
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PREVALENCE OF Β- LACTAMASE PRODUCING STAPHYLOCOCCUS AUREUS IN SLAUGHTERED [PDF]
Basrah Journal of Veterinary Research, 2008 Fifty liver and lung samples (25 for each) were examend for the presence of Staphylococcus aureus . The rate of S. aureus isolates were 60 and 56% in livers and lungs respectively. Identification of S.
Adnan M. AL- Rodhan
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Identification and characterization of a novel β-lactamase TLE-2, encoded by plasmid pUK702 [PDF]
FEMS Microbiology Letters, 1987 A novel plasmid-mediated β-lactamase has been identified in a Klebsiella pneumoniae strain, carried by a plasmid pUK702. The pUK702 plasmid encodes TEM-1 and SHV-1 β-lactamase enzymes in addition to the novel enzyme. The novel enzyme has an Mr of 19 000 and a pI of 6.5. The enzyme is TEM-like in substrate profile and has been designated TLE-2 (TEM-like
Alison J. Reid +3 more
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Fluorescent Mesoporous Nanoparticles for β‐Lactamase Screening Assays
ChemistryOpen, 2020 We present a sensitive and rapid screening method for the determination of β‐lactamase activity of antibiotic‐resistant bacteria, by designing a pH‐sensitive fluorescent dye‐doped mesoporous silica nanoparticle encapsulated with penicillin G as a ...
Srikrishna Tummala +4 more
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Prevalence of 16S rRNA methylase genes among β-lactamase-producing Enterobacteriaceae clinical isolates in Saudi Arabia [PDF]
Libyan Journal of Medicine, 2014 Background: Co production of 16S rRNA methylases gene and β-Lactamase gene among Enterobacteriaceae isolates conferring resistance to both therapeutic options has serious implications for clinicians worldwide.
Yazeed A. Al Sheikh +4 more
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PLoS ONE, 2021 β-lactam antibiotics are the most widely used antimicrobial agents since the discovery of benzylpenicillin in the 1920s. Unfortunately, these life-saving antibiotics are vulnerable to inactivation by continuously evolving β-lactamase enzymes that are ...
Nousheen Parvaiz +4 more
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Isolation and preliminary characterization of β-lactamase excretory mutants ofEscherichia coliK-12 [PDF]
FEMS Microbiology Letters, 1984 Abstract Escherichia coli exc mutants able to release the plasmid pBR322-encoded β-lactamase (EC 3.5.2.6) into the extracellular medium have been isolated using a new in situ plate assay. A preliminary characterization of the exc mutants was carried out: the presence of exc mutations was associated with a specific or pleiotropic pattern of ...
Nicole Fognini-Lefebvre +1 more
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PLoS ONE, 2019 Chromosomal AmpC β-lactamase induction by several types of β-lactams has been reported, but not enough data are available on DHA-1 β-lactamase, a plasmid-mediated AmpC β-lactamase.
Kentaro Akata +8 more
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Clinical Significance of Extended-spectrum β-lactamase-producing Bacteria in First Pediatric Febrile Urinary Tract Infections and Differences between Age Groups [PDF]
Childhood Kidney Diseases, 2017 Purpose Extended-spectrum β-lactamase-producing bacteria-induced urinary tract infections are increasing and require more potent antibiotics such as carbapenems.
Sun Yeong Park, Ji Hong Kim
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Nature Communications, 2021 TEM-1 β-lactamase evolved from ancestral enzymes that degraded a variety of β-lactam antibiotics with moderate efficiency and degrades β-lactam antibiotics with a strong preference for penicillins.
Tushar Modi +7 more
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