Evaluation of Flinders Technology Associates cards for storage and molecular detection of avian metapneumoviruses

Avian Pathol. 2014;43(2):125-9. doi: 10.1080/03079457.2014.885114. Epub 2014 Feb 12.

Abstract

The feasibility of using Flinders Technology Associates (FTA) cards for the molecular detection of avian metapneumovirus (aMPV) by reverse transcriptase-polymerase chain reaction (RT-PCR) was investigated. Findings showed that no virus isolation was possible from aMPV-inoculated FTA cards, confirming viral inactivation upon contact with the cards. The detection limits of aMPV from the FTA card and tracheal organ culture medium were 10(1.5) median ciliostatic doses/ml and 10(0.75) median ciliostatic doses/ml respectively. It was possible to perform molecular characterization of both subtypes A and B aMPV using inoculated FTA cards stored for up to 60 days at 4 to 6°C. Tissues of the turbinate, trachea and lung of aMPV-infected chicks sampled either by direct impression smears or by inoculation of the tissue homogenate supernatants onto the FTA cards were positive by RT-PCR. However, the latter yielded more detections. FTA cards are suitable for collecting and transporting aMPV-positive samples, providing a reliable and hazard-free source of RNA for molecular characterization.

Publication types

  • Evaluation Study

MeSH terms

  • Animals
  • Chickens / virology*
  • Metapneumovirus / genetics
  • Metapneumovirus / isolation & purification*
  • Micropore Filters
  • Paramyxoviridae Infections / diagnosis
  • Paramyxoviridae Infections / veterinary*
  • Paramyxoviridae Infections / virology
  • RNA, Viral / genetics
  • RNA, Viral / isolation & purification
  • Reverse Transcriptase Polymerase Chain Reaction / veterinary*
  • Sensitivity and Specificity
  • Specimen Handling / veterinary*
  • Virus Inactivation

Substances

  • RNA, Viral