PCR-Dipstick Chromatography for Differential Detection of Carbapenemase Genes Directly in Stool Specimens

Antimicrob Agents Chemother. 2017 May 24;61(6):e00067-17. doi: 10.1128/AAC.00067-17. Print 2017 Jun.

Abstract

A PCR-dipstick chromatography technique was designed and evaluated for differential identification of blaNDM, blaKPC, blaIMP, and blaOXA-48 carbapenemase genes directly in stool specimens within 2 h. It is a DNA-DNA hybridization-based detection system where PCR products can be easily interpreted by visual observation without electrophoresis. The PCR-dipstick showed high sensitivity (93.3%) and specificity (99.1%) in directly detecting carbapenemase genes in stool specimens compared with multiplex PCR for genomic DNA of the isolates from those stool specimens.

Keywords: Enterobacteriaceae; carbapenemase; molecular diagnostics.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Proteins / genetics*
  • Carbapenems / pharmacology
  • Feces / microbiology*
  • Humans
  • Molecular Diagnostic Techniques / methods*
  • Multiplex Polymerase Chain Reaction / methods*
  • beta-Lactamases / genetics*

Substances

  • Bacterial Proteins
  • Carbapenems
  • beta-Lactamases
  • carbapenemase