Results 131 to 140 of about 74,609 (245)

Evidence for a Dinuclear Active Site in the Metallo-β-lactamase BcII with Substoichiometric Co(II): A New Model for Uptake [PDF]

, 2007
Metallo-β-lactamases are zinc-dependent enzymes that constitute one of the main resistance mechanisms to β-lactam antibiotics. Metallo-β-lactamases have been characterized both in mono- and dimetallic forms.
Bennett, Brian, Kowalski, Jason M., Llarrull, Leticia l., Tioni, Mariana F., Vila, Alejandro J.   +4 more
core   +1 more source

Successful Application of the Mast Cell Activation Test in Immediate Hypersensitivity to Amoxicillin

Allergy, EarlyView.
This study included 28 amoxicillin‐allergic patients and 11 healthy exposed controls. Mast cells were differentiated from CD34+ progenitors over 8 weeks using cytokine cocktails. The mast cell activation test involved sensitization with patient or control sera and stimulation with free amoxicillin or G4/G5‐AXO dendrimers with successfully activated ...
Jose A. Céspedes, Clara Lebrón‐Martín, Lucía Vallecillos‐Azor, Pablo Torres, Amene Tesfaye Ayane, Gádor Bogas, María Salas, Adriana Ariza, María Isabel Montañez, María José Torres, Carlos José Aranda, Cristobalina Mayorga   +11 more
wiley   +1 more source

Cooperative resistance varies among β-lactamases in E. coli, with some enabling cross-protection and sustained extracellular activity

Communications Biology
β-lactamases confer bacteria resistance to β-lactam antibiotics, and interestingly, this protective effect can extend to neighboring susceptible cells. However, knowledge of this cooperative resistance remains limited.
Qinqin Wang, Shaodong Wei, Jonas Stenløkke Madsen   +2 more
doaj   +1 more source

Site-saturation studies of β-lactamase: Production and characterization of mutant β-lactamases with all possible amino acid substitutions at residue 71 [PDF]

, 1986
A mutagenic technique that "saturates" a particular site in a protein with all possible amino acid substitutions was used to study the role of residue 71 in β-lactamase (EC 3.5.2.6). Threonine is conserved at residue 71 in all class A β-lactamases and is
Richards, John H., Schultz, Steve C.
core  

Characterizing Scales of Genetic Recombination and Antibiotic Resistance in Pathogenic Bacteria Using Topological Data Analysis

, 2014
Pathogenic bacteria present a large disease burden on human health. Control of these pathogens is hampered by rampant lateral gene transfer, whereby pathogenic strains may acquire genes conferring resistance to common antibiotics. Here we introduce tools
A. Holzinger, C. Fraser, C.M. Thomas, C.R. Woese, F. Meyer, G. Carlsson, H. Ochman, H. Rohde, H.C. Neu, J.E. Cooper, J.M. Chan, K.A. Jolley, M.O. Sommer, T. Dagan   +13 more
core   +1 more source

Benefits and Harms of Antenatal/Intrapartum Screening for Maternal Group B Streptococcus and Use of Intrapartum Antibiotic Prophylaxis Versus Risk‐Based Protocols or No Intervention: A Rapid Review

Acta Paediatrica, EarlyView.
ABSTRACT Aim To synthesise evidence on the effectiveness, harms and benefits of different approaches to prevent early‐onset Group B Streptococcus (EOGBS) and identify gaps in short and longer‐term outcomes. Methods A two‐phase rapid review. Phase 1 included an overview of systematic reviews (SRs).
Pauline Campbell, Cathryn Broderick, Candida Fenton, Bridget Davis, Wei Xu, Alex Todhunter‐Brown, Narendra Aladangady, Richard F. Chin, Rosie Hill, Ryan Kean, Charlotte‐Eve Short, Julie Cowie, NESSIE—NIHR Evidence Synthesis Scotland InitiativE   +12 more
wiley   +1 more source

Antimicrobial Susceptibility Trends Observed in Urinary Pathogens Obtained From New York State [PDF]

, 2018
International guidelines recommend using local susceptibility data to direct empiric therapy for acute uncomplicated cystitis. We evaluated outpatient urinary isolate susceptibility trends in New York State.
Avery, Lisa M., Bankert, Eve, Carreno, Joseph J., Dobson, Erica, Dumyati, Ghinwa, Hassett, Stephen, Keller, Marina, Lodise, Thomas, Lubowski, Theresa, Pearsall, Matthew, Rank, Elliot L.   +10 more
core   +1 more source

Novel approaches for drug development against chronic primary pain: A systematic review

British Journal of Pharmacology, EarlyView.
Abstract Chronic primary pain (CPP) persisting for more than 3 months, associated with significant emotional distress without any known underlying cause, is an unmet medical need. Traditional or adjuvant analgesics do not provide satisfactory pain relief for a great proportion of these patients.
Valéria Tékus, Éva Borbély, Andreas Goebel, Ralf Baron, Zsófia Hajna, Zsuzsanna Helyes   +5 more
wiley   +1 more source

In vitro and in vivo evaluation of cephalosporins for the treatment of Lyme disease. [PDF]

, 2018
BackgroundLyme disease accounts for >90% of all vector-borne disease cases in the United States and affect ~300,000 persons annually in North America.
Ambati, Aditya, Babar, Mustafeez Mujtaba, Inayathullah, Mohammed, Kim, Kwang-Min, Maguire, Peter, Parekh, Mansi B, Pothineni, Venkata Raveendra, Potula, Hari-Hara Sk, Rajadas, Jayakumar, Tayebi, Lobat   +9 more
core  

Quality and Consistency of Penicillin Allergy Delabelling Guidelines: A Systematic Review

Clinical &Experimental Allergy, EarlyView.
Eighteen penicillin allergy delabelling guidelines from 12 countries were reviewed. There is consensus for staged risk‐based testing, with emerging support for direct oral challenge in low‐risk patients and expanded non‐specialist roles. Overall guideline quality was low, with major gaps in methodological rigour, stakeholder involvement, and ...
Jessie He, Marina Guirguis, Sankare Devanandan, Rani Scott‐Farmer, Sandra Vale, Michaela Lucas, Jennifer J. Koplin, Catherine J. Hornung, Sandra M. Salter   +8 more
wiley   +1 more source