Title: Occurrence of NDM-1-producing Morganella morganii and Proteus mirabilis in a single patient in Portugal: probable in vivo transfer by conjugation

Journal Article · · Journal of Antimicrobial Chemotherapy
DOI: https://doi.org/10.1093/jac/dkz542 · OSTI ID:1593479
 [1];  [2];  [3];  [3];  [4];  [5]
  1. Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland, Escola Superior de Saúde da Cruz Vermelha Portuguesa (ESSCVP), Lisboa, Portugal, Laboratory of Molecular Genetics, Instituto de Tecnologia Química e Biológica António Xavier (ITQB), Universidade Nova de Lisboa (UNL), Oeiras, Portugal
  2. Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
  3. Hospital SAMS, Lisbon, Portugal
  4. Emerging Antibiotic Resistance Unit; Medical and Molecular Microbiology; Faculty of Science and Medicine; University of Fribourg; Fribourg; Switzerland; Emerging Antibiotic Resistance Unit; Medical and Molecular Microbiology; Faculty of Science and Medicine; University of Fribourg; Fribourg; Switzerland; Escola Superior de Saúde da Cruz Vermelha Portuguesa (ESSCVP); Lisboa; Portugal; Laboratory of Molecular Genetics; Instituto de Tecnologia Química e Biológica António Xavier (ITQB); Universidade Nova de Lisboa (UNL); Oeiras; Portugal; Swiss National Reference Center for Emerging Antibiotic Resistance (NARA); University of Fribourg; Fribourg; Switzerland
  5. Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland, Swiss National Reference Center for Emerging Antibiotic Resistance (NARA), University of Fribourg, Fribourg, Switzerland, INSERM European Unit (IAME, France), University of Fribourg, Fribourg, Switzerland
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Abstract Objectives To decipher the genetics of acquisition of carbapenemase-encoding genes identified in two carbapenem-resistant Enterobacteriaceae recovered from a single patient in Portugal. Methods Carbapenemase genes were searched by PCR assays and mating-out assays were performed to further characterize the plasmid support of the carbapenemase genes. Genetic characterization of the plasmid supports was performed by whole-plasmid sequencing using the Illumina technology. Results We identified here two NDM-1-producing isolates, namely a Morganella morganii and a Proteus mirabilis, sharing the same blaNDM-1-positive plasmid. This 154 kb plasmid belonged to the IncA/C2 type, recently renamed IncC, and co-harboured two AmpC β-lactamase genes, namely blaCMY-4 and blaDHA-1, in addition to the 16S rRNA methylase gene armA encoding high-level resistance to aminoglycosides. In addition, the M. morganii isolate produced the CTX-M-33 extended-spectrum β-lactamase possessing weak carbapenemase activity, encoded by another plasmid. Conclusions We showed here that, in addition to KPC-type and OXA-181 carbapenemases, which have been identified as widespread in this country, another concern is the emergence of NDM-1-producing enterobacterial isolates in Portugal. We demonstrated here the in vivo plasmid transfer of a blaNDM-1-positive plasmid leading to dissemination of this carbapenemase gene within different enterobacterial species in a single patient.

Sponsoring Organization:
USDOE Office of Nuclear Energy (NE), Nuclear Fuel Cycle and Supply Chain
OSTI ID:
1593479
Journal Information:
Journal of Antimicrobial Chemotherapy, Journal Name: Journal of Antimicrobial Chemotherapy Journal Issue: 4 Vol. 75; ISSN 0305-7453
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English

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