Genomic features of a polymyxin-resistant Klebsiella pneumoniae ST491 isolate co-harbouring blaCTX-M-8 and qnrE1 genes from a hospitalised cat in São Paulo, Brazil

Luciana Sartori, Fábio P. Sellera, Quézia Moura, Brenda Cardoso, Herrison Fontana, Lucas A. Côrtes, Louise Cerdeira, Nilton Lincopan

Research output: Contribution to journalComment / DebateOtherpeer-review

4 Citations (Scopus)


Objectives: Klebsiella pneumoniae has emerged as one of the major pathogens of humans and companion animals. Moreover, polymyxin resistance in K. pneumoniae is increasingly reported worldwide, mainly among extended-spectrum β-lactamase (ESBL)- and/or carbapenemase-producing isolates. The aim of this study was to report the draft genome sequence of a polymyxin-resistant, ESBL-producing K. pneumoniae isolate (14CSI) from a hospitalised domestic cat in Brazil. Methods: Whole-genome sequencing of strain 14CSI was performed on an Illumina NextSeq platform and the genome was de novo assembled using Velvet v.1.2.10. Data analysis was performed using bioinformatics tools available from the Center for Genomic Epidemiology and the Institut Pasteur database. Results: The genome size of strain 14CSI was calculated at 5 260 459 bp, with a GC content of 57.3% and comprising 5294 total genes, 28 tRNAs, 7 rRNAs, 8 ncRNAs and 237 pseudogenes. Klebsiella pneumoniae strain 14CSI belongs to sequence type 491 (ST491), presents a mutation (A14S) in the mgrB gene and co-harbours blaCTX-M-8 and qnrE1 genes. Genes conferring resistance to heavy metals were further identified. Conclusion: This draft genome could be used as a reference sequence for comparative analysis of polymyxin-resistant and/or CTX-M-8-producing K. pneumoniae strains circulating at the human–animal interface.

Original languageEnglish
Pages (from-to)186-187
Number of pages2
JournalJournal of Global Antimicrobial Resistance
Publication statusPublished - Jun 2020
Externally publishedYes


  • Colistin
  • Companion animal
  • Enterobacteriaceae
  • ESBL
  • Feline
  • One Health

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