Development of a triplex PCR assay for the specific detection of Campylobacter jejuni, Salmonella spp., and Escherichia coli O157:H7

Mol Cell Probes. 2003 Aug;17(4):135-8. doi: 10.1016/s0890-8508(03)00043-4.

Abstract

A triplex PCR assay was developed and evaluated for efficacy in detecting Campylobacter jejuni, Salmonella spp., and Escherichia coli O157:H7 in a variety of raw and ready-to-eat food products. Following a short enrichment period, artificially contaminated food samples were subjected to a triplex PCR assay, which incorporated published primers for each food pathogen, a protocol for sample collection, and a PCR procedure designed specifically for the assay. The selected primers amplified fragment sizes of 159 bp, 252 bp, and 360 bp for C. jejuni, E. coli O157:H7, and Salmonella spp., respectively. This assay provides specific and reliable results and allows for the cost-effective detection of all three bacterial pathogens in one reaction tube.

Publication types

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

MeSH terms

  • Bacteriological Techniques*
  • Campylobacter jejuni / genetics
  • Campylobacter jejuni / isolation & purification*
  • Campylobacter jejuni / pathogenicity
  • Culture Media
  • DNA Primers
  • DNA, Bacterial / analysis
  • DNA, Bacterial / genetics
  • Escherichia coli O157 / genetics
  • Escherichia coli O157 / isolation & purification*
  • Escherichia coli O157 / pathogenicity
  • Food Microbiology*
  • Meat / microbiology
  • Polymerase Chain Reaction / methods*
  • Salmonella / genetics
  • Salmonella / isolation & purification*
  • Salmonella / pathogenicity
  • Sensitivity and Specificity

Substances

  • Culture Media
  • DNA Primers
  • DNA, Bacterial