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Colistin resistance in carbapenem-resistant Klebsiella pneumoniae mediated by chromosomal integration of plasmid DNA

Research output: Contribution to journalArticlepeer-review

Abstract

Here we describe the spread of colistin resistance in clinical isolates of carbapenem-resistant Klebsiella pneumoniae in Medellín, Colombia. Among 32 isolates collected between 2012 and 2014, 24 showed genetic alterations in mgrB. Nineteen isolates belonged to sequence type 512 (ST512) (or its single locus variant [SLV]) and harbored an 8.1-kb hsdMSR insertion corresponding to ISKpn25, indicating a clonal expansion of the resistant strain. The insertion region showed 100% identity to several plasmids, suggesting that the colistin resistance is mediated by chromosomal integration of plasmid DNA.

Original languageEnglish
Article numbere00404
JournalAntimicrobial Agents and Chemotherapy
Volume61
Issue number8
DOIs
StatePublished - Aug 2017

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

ASJC Scopus subject areas

  • Pharmacology
  • Pharmacology (medical)
  • Infectious Diseases

Keywords

  • Carbapenem resistance
  • Colistin resistance
  • Klebsiella pneumoniae
  • MgrB

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