The OXA β-lactamases were among the earliest β-lactamases detected; however, these
molecular class D β-lactamases were originally relatively rare and always plasmid …

Two extended-spectrum mutants of the class D β-lactamase OXA-10 (PSE-2) from
Pseudomonas aeruginosa isolates obtained in Ankara, Turkey, were described previously …

The epidemiology of carbapenemases worldwide is showing that OXA-48 variants are
becoming the predominant carbapenemase type in Enterobacteriaceae in many countries …

Pseudomonas aeruginosa isolates 871 and 873 were isolated at Hacettepe University
Hospital in Ankara and were highly resistant to ceftazidime (MIC, 128 μg/ml). Each produced …

Resistance to carbapenems in Acinetobacter baumannii is increasingly reported and is
mostly associated with expression of carbapenemases (3, 6). Those carbapenemases are …

Klebsiella pneumoniae KP3 was isolated from a patient transferred from India to the
Sultanate of Oman. K. pneumoniae KP3 was resistant to all β-lactams, including …

Objectives: This study was designed to demonstrate the prevalence of the newly discovered
carbapenem-hydrolysing class D enzymes, OXA-51-type and OXA-58, among clinical …

Pseudomonas aeruginosa ED-1, isolated from a pulmonary brush of a patient hospitalized
in a suburb of Paris, France, was resistant to ceftazidime and of intermediate susceptibility to …

Objective To compare the incidence of carbapenemase genes in Acinetobacter baumannii
between two time periods. Methods We studied 114 isolates of imipenem-resistant A …

The basis of the β-lactam resistance of 39 multidrug-resistant Acinetobacter baumannii
isolates recovered from hospitalized patients was studied. These isolates were collected …