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  • Title: Identification of blaOXA-128 and blaOXA-129, two novel OXA-type extended-spectrum-β-lactamases in Pseudomonas aeruginosa, in Hunan Province, China.
    Author: Liu W, Liu X, Liao J, Zhang Y, Liang X.
    Journal: J Basic Microbiol; 2010 Dec; 50 Suppl 1():S116-9. PubMed ID: 20967789.
    Abstract:
    We collected 97 non-repetitive carbapenemases-sensitive clinical isolates of Pseudomonas aeruginosa in Human Province, China, during the period of October 2006 to January 2007. From these isolates, we identified two novel oxacillin-hydrolysing (OXA) type extended-spectrum-β-lactamases (ESBLs): bla OXA-128 and bla OXA-129, which contain the mutations of I89V from bla OXA-56 and K134N from bla OXA-10, respectively. Clinical isolates containing either bla OXA-128 or bla OXA-129 show resistance to cephamycin-class antibiotics but sensitive to carbapenem-class antibiotics. The occurrence of novel OXA-type lactamases suggests a regional prevalent pattern of ESBLs Pseudomonas aeruginosa in this area.
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