Plasmid-mediated quinolone resistance in pseudomonas putida isolates from imported shrimp

Appl Environ Microbiol. 2011 Mar;77(5):1885-7. doi: 10.1128/AEM.01176-10. Epub 2010 Dec 30.

Abstract

Fourteen quinolone-resistant Pseudomonas putida isolates were recovered from imported frozen shrimp sold in the United States. Two isolates harbored plasmids with qnrA and qnrB genes. PCR and DNA sequencing of quinolone resistance-determining regions identified novel substitutions in GyrA (His139→Glu and Thr128→Ala) and GyrB (Thr442→Asn, Gly470→Ala, and Ile487→Pro) and previously reported substitutions in GyrB (Asp489→Glu) and ParC (Thr105→Pro).

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amino Acid Substitution / genetics
  • Anti-Bacterial Agents / pharmacology*
  • Bacterial Typing Techniques
  • Cluster Analysis
  • DNA Gyrase / genetics
  • DNA Topoisomerase IV / genetics
  • DNA, Bacterial / chemistry
  • DNA, Bacterial / genetics
  • Drug Resistance, Bacterial*
  • Electrophoresis, Gel, Pulsed-Field
  • Microbial Sensitivity Tests
  • Molecular Typing
  • Mutation, Missense
  • Plasmids*
  • Polymerase Chain Reaction
  • Pseudomonas putida / classification
  • Pseudomonas putida / drug effects*
  • Pseudomonas putida / genetics*
  • Pseudomonas putida / isolation & purification
  • Quinolones / pharmacology*
  • Seafood / microbiology*
  • Sequence Analysis, DNA
  • United States

Substances

  • Anti-Bacterial Agents
  • DNA, Bacterial
  • Quinolones
  • DNA Topoisomerase IV
  • DNA Gyrase