1. Characterization of the IncFII-IncFIB(pB171) Plasmid Carrying blaNDM-5 in Escherichia coli ST405 Clinical Isolate in Japan.
- Author
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Takayama, Yoko, Sekizuka, Tsuyoshi, Matsui, Hidehito, Adachi, Yuzuru, Eda, Ryotaro, Nihonyanagi, Shin, Wada, Tatsuhiko, Matsui, Mari, Suzuki, Satowa, Takaso, Masashi, Kitasato, Hidero, Kuroda, Makoto, and Hanaki, Hideaki
- Subjects
PLASMIDS ,ESCHERICHIA coli ,CARBAPENEM-resistant bacteria ,URINARY tract infections ,DRUG resistance in bacteria ,NOSOCOMIAL infections - Abstract
Purpose: New Delhi metallo-β-lactamase 5 (NDM-5) shows stronger resistance to carbapenems and broad-spectrum cephalosporins than NDM-1 because NDM-5 differs from NDM-1 by two amino acid substitutions. In this study, our aim was to characterize a NDM-5-producing Escherichia coli isolate KY1497 from a patient with urinary tract infection in Japan, who had no recent history of overseas travel. Patients and Methods: NDM-5-producing E. coli isolate KY1497 was detected in the urine sample of a patient hospitalized in a tertiary hospital in Japan. The complete genome sequence of isolate KY1497 was determined by short- and long-read sequencing with hybrid assembly, followed by multilocus sequence typing (MLST), core-genome phylogeny analysis, plasmid analysis, and transconjugation experiments. Results: KY1497 was classified as ST405 by MLST, and core-genome phylogeny exhibited the closest lineage to the clinical isolates in Nepal (IOMTU605) and Canada (FDAARGOS_448). KY1497 harbors bla
NDM-5 in the IncFII-IncFIB(pB171) replicon plasmid (pKY1497_1, 123,767 base pairs). Plasmid analysis suggested that the cognate plasmids of pKY1497_1 have a minor plasmid background, rather than the globally disseminated IncX3 plasmid carrying blaNDM-5 . Transconjugation analysis revealed that pKY1497_1 is transmissible to the recipient E. coli J53 strain. Conclusion: We characterized a novel Inc replicon plasmid (IncFII-IncFIB[pB171]) carrying blaNDM-5 and its host E. coli strain. NDMs are associated with a high risk of infection worldwide because of their antibiotic resistance and untreatable and hard-to-treat infections. Other patients in the hospital showed negative results for carbapenem-resistant Enterobacteriaceae. As NDM-producing strains are only sporadically detected in Japan, attention should be provided to the community prevalence of NDM-producing E. coli strains to prevent nosocomial infections. [ABSTRACT FROM AUTHOR]- Published
- 2020
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