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Multiplex PCR and Microarray for Detection of Swine Respiratory Pathogens.

O Lung1, S Ohene-Adjei1, C Buchanan1

  • 1Lethbridge Laboratory, National Centres for Animal Disease, Canadian Food Inspection Agency, Lethbridge, AB, Canada.

Transboundary and Emerging Diseases
|December 15, 2015
PubMed
Summary
This summary is machine-generated.

A new automated microarray assay enables rapid, simultaneous detection and typing of eight key bacteria and viruses causing Porcine Respiratory Disease Complex (PRDC). This advancement offers a faster, more efficient diagnostic tool for pig producers.

Keywords:
microarraymultiplex PCRporcine respiratory disease complexswine respiratory disease

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Area of Science:

  • Veterinary Medicine
  • Molecular Diagnostics
  • Animal Health

Background:

  • Porcine Respiratory Disease Complex (PRDC) significantly impacts pig production, involving multiple pathogens.
  • Current diagnostics for PRDC pathogens are often time-consuming, relying on culture-based methods.
  • A need exists for a rapid, simultaneous diagnostic test for major PRDC-associated bacteria and viruses.

Purpose of the Study:

  • To develop and validate a novel automated microarray assay for simultaneous detection and typing of common PRDC pathogens.
  • To integrate multiplex reverse transcriptase PCR with automated microarray processing.
  • To provide a user-friendly and efficient diagnostic solution for PRDC.

Main Methods:

  • Development of a prototype automated microarray system for post-PCR processing.
  • Integration with multiplex reverse transcriptase PCR for simultaneous amplification.
  • Detection and differentiation of four viruses (PRRSV, Influenza A, PCV2, PRCV) and four bacteria (M. hyopneumoniae, P. multocida, S. enterica, S. suis).
  • Typing of PRRSV (Type 1 vs. Type 2) and P. multocida (toxigenic vs. non-toxigenic).

Main Results:

  • The assay successfully detected and differentiated all eight targeted pathogens.
  • Accurate identification and typing of 34 strains representing the target pathogens.
  • The assay showed high specificity, yielding negative results with 34 non-target species.
  • Successful identification of pathogens in clinical lung samples and experimental materials, both individually and in combination.

Conclusions:

  • The novel automated microarray assay provides a rapid and accurate method for simultaneous detection and typing of major PRDC pathogens.
  • This technology offers a significant improvement over traditional culture-based methods, reducing diagnostic time.
  • The user-friendly assay has the potential to enhance disease management strategies in swine production.