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    Detection and molecular characterisation of plasmidic AmpC b-lactamases in Klebsiella pneumoniae isolates from a tertiary-care hospital in Dublin, Ireland


    Roche, C., Boo, T.W., Walsh, Fiona and Crowley, B. (2008) Detection and molecular characterisation of plasmidic AmpC b-lactamases in Klebsiella pneumoniae isolates from a tertiary-care hospital in Dublin, Ireland. Clinical Microbiology and Infection, 14 (6). pp. 616-618. ISSN 1198-743X

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    Abstract

    This study determined the types of AmpC enzymes produced by Klebsiella pneumoniae isolates resistant to third-generation cephalosporins and the clonality of these isolates. The presence of AmpC enzymes was identified by cephalosporin-cloxacillin synergy tests. Genes encoding AmpC enzymes were characterised by PCR and sequencing. Pulsed-field gel electrophoresis (PFGE) was used to type the isolates. Fifteen K. pneumoniae isolates were positive for bla(AmpC), 13 were positive for bla(ACC-1) and two were positive for bla(DHA-1). Production of the DHA-1 enzyme was inducible. The ampR gene was identified upstream of the bla(DHA-1) gene. PFGE demonstrated the polyclonal origin of the isolates carrying bla(ACC-1).
    Item Type: Article
    Keywords: ACC-1; AmpC b-lactamase; DHA-1; Klebsiella pneumoniae; resistance; typing;
    Academic Unit: Faculty of Science and Engineering > Biology
    Item ID: 7478
    Identification Number: 10.1111/j.1469-0691.2008.01998.x
    Depositing User: Fiona Walsh
    Date Deposited: 28 Sep 2016 15:29
    Journal or Publication Title: Clinical Microbiology and Infection
    Publisher: Elsevier
    Refereed: Yes
    Funders: Health Research Board (HRB)
    Related URLs:
    URI: https://mural.maynoothuniversity.ie/id/eprint/7478
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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