Peer-Reviewed Journal Details
Mandatory Fields
Boyle, F,Healy, G,Hale, J,Kariuki, S,Cormican, M,Morris, D
2011
August
Diagnostic Microbiology And Infectious Disease
Characterization of a novel extended-spectrum beta-lactamase phenotype from OXA-1 expression in Salmonella Typhimurium strains from Africa and Ireland
Published
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Optional Fields
ESBL Salmonella enterica Africa Ireland ESCHERICHIA-COLI IDENTIFICATION PREVALENCE
70
549
553
Salmonella enterica (S. Typhimurium) strains from Kenya, Malawi, and Ireland showing elevated cefepime MIC values carried bla(OXA-1). These strains were not detected by current guidelines for extended-spectrum beta-lactamase production based on MIC values or clavulanate inhibition, since cefepime is a preferred substrate for OXA-1 and this enzyme is reported to be resistant to clavulanate inhibition. bla(OXA-1) was located within a class I integron and an activated P-2 promoter was identified upstream of bla(OXA-1). P-2 was activated by the insertion of a triplet 'GGG' upstream of the -10 signal. All African strains were ST313, prevalent in this continent, and the Irish isolate belonged to ST19. (C) 2011 Elsevier Inc. All rights reserved.
DOI 10.1016/j.diagmicrobio.2011.04.007
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