Summary
Methanol-precipitated, detergent-treated (Triton X-100) Newcastle disease virus (NDV) was found suitable as an agar gel precipitation test (AGPT) antigen. One hundred and twenty sera were tested by the haemagglutination-inhibition (HI) test and AGPT against NDV. There was a very significant increase in the proportion of AGPT positive samples with increase in HI titre. Hence AGPT can be recommended as a field based test for seromonitoring following vaccinations against ND where laboratory facilities are inadequate.
Résumé
Un virus de la maladie de Newcastle, traité par un détergent (Triton X-100 et précipité au méthanol fut reconnu utilisable comme antigène pour un test de précipitation sur agarose (AGPT). 120 serums furent testés par test d’inhibition hemo-agglutinant et par AGPT contre le virus de la maladie de Newcastle. Il y eut une augmentation significante dans la proportion d’échantillons positifs par AGPT avec l’augmentation du titre Hi. Désormais l’AGPT peut être recommandé comme un test de terrain pour le serodiagnostic après vaccination contre la maladie de Newcastle lorsque les facilités de laboratoire ne sont pas adéquates.
Resumen
Virus de la enfermedad de Newcastle (NDV) precipitados con metanol y tratados con detergente (Triton X-100) resultaron ser adecuados como antígenos para un test de precipitación en agar gel (AGPT). Se realizaron AGPT y tests de inhibición de la hemoaglutinación en 120 muestras de suero. Se encontró un aumento muy significativo en la proporción de muestra positivas según AGPT conforme aumentaba el título de anticuerpos determinado según HI. Por tanto, cuando las instalaciones de laboratorio no son adecuadas, AGPT puede ser recomendado como test de campo para seromonitorización después de vacunar frente a la enfermedad de Newcastle.
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Roy, P., Koteeswaran, A. & Venugopalan, A.T. Methanol-precipitated, detergent-treated newcastle disease virus as an agar-gel precipitation test antigen. Trop Anim Health Prod 29, 25–28 (1997). https://doi.org/10.1007/BF02632342
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DOI: https://doi.org/10.1007/BF02632342


