Detection of the novel extended-spectrum β-lactamase OXA-161 from a plasmid-located integron in Pseudomonas aeruginosa clinical isolates from Spain

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Abstract

Two clonally related Pseudomonas aeruginosa isolates, recovered from two patients admitted to a pediatric intensive care unit, were found to harbor a new OXA-2 variant (Asn148Asp), designated OXA-161. The plasmid location of bla OXA-161 was demonstrated through electroporation to PAO1, and its codification in a class I integron (together with aacA4) was demonstrated through PCR and sequencing. blaOXA-2 and blaOXA-161 were cloned in parallel to demonstrate the extended-spectrum β-lactamase properties of OXA-161, conferring resistance to ceftazidime and reduced susceptibility to cefepime and aztreonam. Copyright © 2009, American Society for Microbiology. All Rights Reserved.

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Juan, C., Mulet, X., Zamorano, L., Albertí, S., Pérez, J. L., & Oliver, A. (2009). Detection of the novel extended-spectrum β-lactamase OXA-161 from a plasmid-located integron in Pseudomonas aeruginosa clinical isolates from Spain. Antimicrobial Agents and Chemotherapy, 53(12), 5288–5290. https://doi.org/10.1128/AAC.00822-09

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