Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper

The diagnostic value of RT-PCR and hemi-nested RT-PCR (hnRT-PCR) was compared in brain samples of dogs presenting neurological signs compatible with canine distemper. Samples of central nervous system (CNS) were collected from 68 dogs and tested by direct immunofluorescence test (RFID) and, independ...

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Main Authors: Adriana Cortez, Vanessa Souza, Telma Fernandes, Jane Megid
Format: Article
Language:English
Published: Universidade de São Paulo 2015-12-01
Series:Brazilian Journal of Veterinary Research and Animal Science
Subjects:
Online Access:http://www.revistas.usp.br/bjvras/article/view/88333
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author Adriana Cortez
Vanessa Souza
Telma Fernandes
Jane Megid
author_facet Adriana Cortez
Vanessa Souza
Telma Fernandes
Jane Megid
author_sort Adriana Cortez
collection DOAJ
description The diagnostic value of RT-PCR and hemi-nested RT-PCR (hnRT-PCR) was compared in brain samples of dogs presenting neurological signs compatible with canine distemper. Samples of central nervous system (CNS) were collected from 68 dogs and tested by direct immunofluorescence test (RFID) and, independent of the results, they were stored at -20°C for at least three years. They were submitted to the RT-PCR and hnRT-PCR techniques aiming to determine the gene responsible for the viral nucleoprotein decoding. Fifty-nine samples were positive for RIFD, 40 for RT-PCR (Kappa = 0.358) and 54 for hnRT-PCR (Kappa = 0.740). All nine RIFD negative samples were also negative for RT-PCR and hnRT-PCR. In spite of the storage duration and proper sample conditions, the estimated accordance between hnRT-PCR and RIFD demonstrated that hnRT-PCR technique can be applied in retrospective studies.
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spelling doaj.art-86008eb932424c639beba648f070c9ee2022-12-22T03:17:06ZengUniversidade de São PauloBrazilian Journal of Veterinary Research and Animal Science1413-95961678-44562015-12-0152410.11606/issn.1678-4456.v52i4p363-36596499Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemperAdriana Cortez0Vanessa Souza1Telma Fernandes2Jane Megid3Universidade de Santo Amaro, Medicina VeterináriaUniversidade Estadual Paulista, Faculdade de Medicina Veterinária e ZootecniaUniversidade Estadual Paulista, Faculdade de Medicina Veterinária e ZootecniaUniversidade Estadual Paulista, Faculdade de Medicina Veterinária e ZootecniaThe diagnostic value of RT-PCR and hemi-nested RT-PCR (hnRT-PCR) was compared in brain samples of dogs presenting neurological signs compatible with canine distemper. Samples of central nervous system (CNS) were collected from 68 dogs and tested by direct immunofluorescence test (RFID) and, independent of the results, they were stored at -20°C for at least three years. They were submitted to the RT-PCR and hnRT-PCR techniques aiming to determine the gene responsible for the viral nucleoprotein decoding. Fifty-nine samples were positive for RIFD, 40 for RT-PCR (Kappa = 0.358) and 54 for hnRT-PCR (Kappa = 0.740). All nine RIFD negative samples were also negative for RT-PCR and hnRT-PCR. In spite of the storage duration and proper sample conditions, the estimated accordance between hnRT-PCR and RIFD demonstrated that hnRT-PCR technique can be applied in retrospective studies.http://www.revistas.usp.br/bjvras/article/view/88333Canine distemperhnRT-PCRDirect immunofluorescenceKappa index
spellingShingle Adriana Cortez
Vanessa Souza
Telma Fernandes
Jane Megid
Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper
Brazilian Journal of Veterinary Research and Animal Science
Canine distemper
hnRT-PCR
Direct immunofluorescence
Kappa index
title Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper
title_full Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper
title_fullStr Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper
title_full_unstemmed Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper
title_short Evaluation of RT-PCR and hemi-nested RT-PCR in brain samples from dogs with neurologic signs compatible with distemper
title_sort evaluation of rt pcr and hemi nested rt pcr in brain samples from dogs with neurologic signs compatible with distemper
topic Canine distemper
hnRT-PCR
Direct immunofluorescence
Kappa index
url http://www.revistas.usp.br/bjvras/article/view/88333
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