Comparison of microscopic agglutination test and indirect elisa in the diagnosis of bovine leptospirosis

Authors

  • Mariana Assunção Souza Universidade Federal de Uberlândia
  • Jacqueline Ribeiro de Castro Universidade Federal de Uberlândia
  • Tatiane Cristina Fernandes Tavares Universidade Federal de Uberlândia
  • Pollyanna Mafra Soares Universidade Federal de Uberlândia
  • Mariane Pacheco dos Santos Universidade Federal de Uberlândia
  • Muriell Ribeiro Ganda Universidade Federal de Uberlândia
  • Dayane Olímpia Gomes Universidade Federal de Uberlândia
  • Anna Monteiro Correia Lima-Ribeiro Universidade Federal de Uberlândia

Abstract

The objective of this research was to compare the results obtained by the Microscopic Agglutination Test (MAT) and indirect ELISA using outer membrane proteins (OMP) of the serovar Hardjo as antigen (ELISA/OMP-Hardjo). Ninety-three samples of blood serum from 3 to 6-year-old cattle of both sexes with no history of vaccination for leptospirosis were used. To perform the MAT, live cultures of 14 Leptospira serovars representing 11 serogroups of L. interrogans were used as antigen. Outer membrane proteins (OMP) of the serovar Hardjo (ELISA-OMP/Hardjo) were used as the ELISA antigen. Of the 93 samples tested by MAT, 37 (40%) were positive. None of the samples testing positive in the MAT were negative in the ELISA. Sensitivity was 100% and specificity 64%. A comparison of the MAT and ELISA-OMP/Hardjo tests showed 78% agreement and the Kappa index was 0.58 (p<0.0001). The ELISA-OMP/Hardjo proved to be a sensitive test for the diagnosis of bovine leptospirosis, indicating its potential use as a screening test and for epidemiological studies. The titration results obtained by MAT and by optical density (OD) in the ELISA-OMP/Hardjo test showed a positive correlation, and as the antibody titers in the MAT increased, so did the OD in ELISA, demonstrating the correspondence between the tests evaluated here.

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Published

2014-09-30

How to Cite

SOUZA, M.A., CASTRO, J.R. de, TAVARES, T.C.F., SOARES, P.M., SANTOS, M.P. dos, GANDA, M.R., GOMES, D.O. and LIMA-RIBEIRO, A.M.C., 2014. Comparison of microscopic agglutination test and indirect elisa in the diagnosis of bovine leptospirosis . Bioscience Journal [online], vol. 30, pp. 833–838. [Accessed29 November 2022]. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/18256.

Issue

Section

Agricultural Sciences