OXA-163, an OXA-48-Related Class D β-Lactamase with Extended Activity Toward Expanded-Spectrum Cephalosporins
نویسندگان
چکیده
منابع مشابه
Detection of OXA-370, an OXA-48-related class D β-lactamase, in Enterobacter hormaechei from Brazil.
Jorge L. M. Sampaio, Vanessa B. Ribeiro, Juliana Coutinho Campos, Franciéli P. Rozales, Cibele M. Magagnin, Diego R. Falci, Renato Cassol F. da Silva, Micheline G. Dalarosa, Daniela I. Luz, Fabiane J. Vieira, Laura C. Antochevis, Afonso Luis Barth, Alexandre P. Zavascki Departamento de Análises Clínicas e Toxicológicas—Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, B...
متن کاملNoncarbapenemase OXA-48 Variants (OXA-163 and OXA-405) Falsely Detected as Carbapenemases by the β Carba Test.
Laurent Dortet, Thierry Naas Associated French National Reference Center for Antibiotic Resistance, Le Kremlin-Bicêtre, France; Research Unit EA7361 “Structure, Dynamic, Function and Expression of Broad Spectrum β-Lactamases,” Faculty of Medicine, University Paris-Sud, Le Kremlin-Bicêtre, France; Department of Bacteriology-Parasitology-Hygiene, Bicêtre Hospital, Assistance Publique—Hôpitaux de ...
متن کاملOXA-18, a class D clavulanic acid-inhibited extended-spectrum beta-lactamase from Pseudomonas aeruginosa.
Clinical isolate Pseudomonas aeruginosa Mus showed resistance both to extended-spectrum cephalosporins and to aztreonam. We detected a typical double-disk synergy image when ceftazidime or aztreonam was placed next to a clavulanic acid disk on an agar plate. This resistance phenotype suggested the presence of an extended-spectrum beta-lactamase. Isoelectric focusing revealed that this strain pr...
متن کاملStructures of the class D Carbapenemases OXA-23 and OXA-146: mechanistic basis of activity against carbapenems, extended-spectrum cephalosporins, and aztreonam.
Class D β-lactamases that hydrolyze carbapenems such as imipenem and doripenem are a recognized danger to the efficacy of these "last-resort" β-lactam antibiotics. Like all known class D carbapenemases, OXA-23 cannot hydrolyze the expanded-spectrum cephalosporin ceftazidime. OXA-146 is an OXA-23 subfamily clinical variant that differs from the parent enzyme by a single alanine (A220) inserted i...
متن کاملOXA-17, a further extended-spectrum variant of OXA-10 beta-lactamase, isolated from Pseudomonas aeruginosa.
Pseudomonas aeruginosa isolates 871 and 873 were isolated at Hacettepe University Hospital in Ankara and were highly resistant to ceftazidime (MIC, 128 microg/ml). Each produced three beta-lactamases, with pIs of 5.3, 6.1, and 7.9. The beta-lactamase with a pI of 5.3 was previously shown to be PER-1 enzyme. The antibiograms of the isolates were not entirely explained by production of PER-1 enzy...
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ژورنال
عنوان ژورنال: Antimicrobial Agents and Chemotherapy
سال: 2011
ISSN: 0066-4804,1098-6596
DOI: 10.1128/aac.00022-11