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Year 2013 - Volume 33, Number 4
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Comparison of indirect ELISA and indirect immunofluorescence in detection of antibodies to Neospora caninum in buffaloes (Bubalus bubalis), 33(4):431-434
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ABSTRACT.- Silva S.P., Mota R.A., Faria E.B., Casseb A.R., Casseb L.M.N. & Dias H.L.T. 2013. [Comparison of indirect ELISA and indirect immunofluorescence in detection of antibodies to Neospora caninum in buffaloes (Bubalus bubalis).] Comparação das técnicas de ELISA indireto e Imunofluorescência indireta na detecção de anticorpos anti-Neospora caninum em búfalas (Bubalus bubalis). Pesquisa Veterinária Brasileira 33(4):431-434. Laboratório de Investigação e Diagnóstico de Enfermidades Animais, Universidade Federal do Pará, Belém, PA, Brazil. E-mail: spatroca@yahoo.com.br
To compare two serologic tests for detection of antibodies against Neospora caninum in sera from buffaloes, samples were collected from 288 buffaloes of 2 to 10 years of age. To identify the presence of IgG, anti-N. caninum was used for the indirect immunofluorescence assay (IFAT), with title 200 as the cutoff, and for the immunoenzymatic test (indirect ELISA), considering as positive samples with ratio S/P ≥0.5. There were 153 (53.12%) animals positive for N. caninum by IFAT, whilst 50 (17.36%) animals were reactive in ELISA. The presence of antibodies anti-N. caninum demonstrates that the parasite is circulating among buffaloes raised in Pará State, Brazil. ELISA and IFAT tests could be used to diagnose immunoglobulins against this agent. However there was a weak correlation (Kappa = 0.36) between both tests, considering the IFAT as the gold standard. |
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