Results 31 to 40 of about 781,021 (270)

The Mechanisms of Catalysis by Metallo β-Lactamases [PDF]

open access: yes, 2008
Class B β-lactamases or metallo-β-lactamases (MBLs) require zinc ions to catalyse the hydrolysis of β-lactam antibiotics such as penicillins, cephalosporins, carbapenems, and cephamycins.
Michael I. Page   +3 more
core   +3 more sources

Prevalence of multiresistant gram-negative organisms in a tertiary hospital in Mwanza, Tanzania. [PDF]

open access: yes, 2009
\ud Antimicrobial resistance is fast becoming a global concern with rapid increases in multidrug-resistant Gram negative organisms. The prevalence of extended spectrum beta-lactamase (ESBL)-producing clinical isolates increases the burden on implementing
Kamugisha, Erasmus   +19 more
core   +1 more source

Beta-lactam resistance in Campylobacter [PDF]

open access: yes, 2011
Resistance to β-lactam antibiotics in Campylobacter is often associated with the production of a β-lactamase; to date the genomically encoded bla\(_{OXA-61}\) and the closely related cj0299 are the only described β-lactamase genes of Campylobacter ...
Stones, Leanne
core   +7 more sources

Prevalence of co-existence genes and clonal spread of ESBL-producing isolates causing hospital and community-acquired infections in Zenica-Doboj Canton, Bosnia and Herzegovina

open access: yesJournal of Health Sciences, 2017
Introduction: Co-existence type of ESBL-producing isolates are serious problem in the public health world. Methods Antibiotic susceptibility was determined by disc diffusion and broth microdilution according to CLSI guidelines.
Amir Ibrahimagić   +2 more
doaj   +1 more source

Exploring Protein Sequence Space Using Computationally Directed Recombination [PDF]

open access: yes, 2006
Evolution has provided us with many protein sequences. However, these sequences represent a very small fraction of the possible sequences. In the laboratory, scientists have explored areas of sequence space not represented by natural proteins both to ...
Meyer, Michelle Margaret
core   +1 more source

Structural basis of metallo-β-lactamase, serine-β-lactamase and penicillin-binding protein inhibition by cyclic boronates

open access: yesNature Communications, 2016
Bacterial beta-lactamases are responsible for resistance to beta-lactams, the most important family of antibiotics. Here, the authors reveal cyclic boronate inhibitors that are active against both serine- and metallo-beta-lactamases and represent a ...
Jürgen Brem   +9 more
doaj   +1 more source

Epidemiologia molecolare di Klebsiella pneumoniae produttore di beta-lattamasi ad ampio spettro (ESBL) circolante in una Terapia Intensiva Neonatale [PDF]

open access: yes, 2006
The molecular epidemiology of extended-spectrum beta-lactamase (ESBL)-producing Klebsiella pneumoniae was investigated in the neonatal intensive care unit (NICU) of a university hospital in Italy from September 2002 to December 2004, when 233 ...
Bagattini, Maria
core   +1 more source

Molecular epidemiology and resistance patterns of blaOXA-48 Klebsiella pneumoniae and Escherichia coli: A nationwide multicenter study in Taiwan

open access: yesJournal of Microbiology, Immunology and Infection, 2021
Background: We describe the molecular epidemiology and resistance patterns of blaOXA-48 Klebsiella pneumoniae and Escherichia coli in Taiwan. Methods: In this multicenter surveillance study from January 2012 to August 2015, the identified blaOXA-48 ...
Ching-Hsun Wang   +6 more
doaj   +1 more source

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis   +5 more
wiley   +1 more source

Supra and subgingival application of antiseptics or antibiotics during periodontal therapy

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract Periodontal diseases (gingivitis and periodontitis) are characterized by inflammatory processes which arise as a result of disruption of the balance in the oral ecosystem. According to the current S3 level clinical practice guidelines, therapy of patients with periodontitis involves a stepwise approach that includes the control of the patient ...
Elena Figuero   +5 more
wiley   +1 more source

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