First report of plasmid-mediated qnrA1 in a ciprofloxacin-resistant Escherichia coli strain in Latin America

Antimicrob Agents Chemother. 2007 Apr;51(4):1527-9. doi: 10.1128/AAC.00780-06. Epub 2007 Jan 12.

Abstract

Among 144 ciprofloxacin-resistant Escherichia coli isolated in Brazil, one (0.69%) QnrA1-producing isolate was detected. The qnrA1 gene was associated with ISCR1. The QnrA1 determinant was carried on a 41-kb conjugative plasmid, which also carried a FOX-type cephalosporinase encoding gene and a class 1 integron with the aadB and catB3 cassettes. This is the first report of a qnrA-carrying isolate in a Latin American country.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Ciprofloxacin / pharmacology*
  • Conjugation, Genetic
  • Drug Resistance, Bacterial / genetics*
  • Escherichia coli / enzymology
  • Escherichia coli / genetics
  • Escherichia coli / isolation & purification
  • Escherichia coli Infections / microbiology
  • Escherichia coli Proteins / physiology*
  • Integrons / genetics
  • Latin America / epidemiology
  • Molecular Sequence Data
  • Plasmids / genetics*

Substances

  • Anti-Bacterial Agents
  • Escherichia coli Proteins
  • Qnr protein, E coli
  • Ciprofloxacin

Associated data

  • GENBANK/AM295980
  • GENBANK/AM295981