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Resultados filtrados por Publicador: American Society for Microbiology
‣ PME-1, an Extended-Spectrum β-Lactamase Identified in Pseudomonas aeruginosa▿
Fonte: American Society for Microbiology
Publicador: American Society for Microbiology
Tipo: Artigo de Revista Científica
Publicado em /06/2011
Português
Relevância na Pesquisa
271.29668%
A novel extended-spectrum β-lactamase (ESBL) was identified in a Pseudomonas aeruginosa clinical isolate obtained from a patient admitted to a hospital in Pennsylvania in 2008. The patient had a prolonged hospitalization in a hospital in Dubai, United Arab Emirates, before being transferred to the United States. The novel ESBL, designated PME-1 (Pseudomonas aeruginosa ESBL 1), is a molecular class A, Bush-Jacoby-Medeiros group 2be enzyme and shared 50, 43, and 41% amino acid identity with the L2 β-lactamase of Stenotrophomonas maltophilia, CTX-M-9, and KPC-2, respectively. PME-1 conferred clinically relevant resistance to ceftazidime, cefotaxime, cefepime, and aztreonam in P. aeruginosa PAO1 but not to carbapenems. Purified PME-1 showed good hydrolytic activity against ceftazidime, cefotaxime, and aztreonam, while activity against carbapenems and cefepime could not be measured. PME-1 was inhibited well by β-lactamase inhibitors, including clavulanic acid, sulbactam, and tazobactam. The blaPME-1 gene was carried by an approximately 9-kb plasmid and flanked by tandem ISCR24 elements.
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