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Rapid immunofiltration assay based on colloidal gold–protein G conjugate as an alternative screening test for bovine and ovine brucellosis

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Abstract

A non-enzymatic rapid immunofiltration assay (NERIFA) was developed as an alternative field test for rapid detection of anti-Brucella antibody in bovine and ovine sera. The assay was based on Brucella abortus lipopolysaccharide as diagnostic antigen and colloidal gold particle–protein G conjugate as detection reagent. Its diagnostic performance was evaluated using undiluted well-defined positive and negative serum samples in comparison with Rose Bengal test (RBT), complement fixation test (CFT) and a commercial and an in-house indirect enzyme-linked immunosorbent assay (ELISA). A perfect test agreement was found between NERIFA and ELISAs by kappa statistics. In addition, McNemar’s analysis of the results showed that the RBT for bovine sera and the CFT for ovine sera were found significantly less performant than indirect ELISAs and NERIFA. The results of the present study indicated that the NERIFA could be considered as a simple, rapid, and accurate field test for screening of ovine and bovine brucellosis. Therefore, this test constitutes a high potential to be used as an alternative model particularly in brucellosis prevalent tropical and subtropical geographical areas.

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Acknowledgments

This work was funded by Ondokuz Mayıs University, Project VET-064.

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Authors and Affiliations

  1. Faculty of Veterinary Medicine, Department of Microbiology, Ondokuz Mayıs University, 55139, Samsun, Turkey

    Oktay Genç, Özlem Büyüktanır & Nevzat Yurdusev

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  1. Oktay Genç
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  2. Özlem Büyüktanır
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  3. Nevzat Yurdusev
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Correspondence to Nevzat Yurdusev.

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Genç, O., Büyüktanır, Ö. & Yurdusev, N. Rapid immunofiltration assay based on colloidal gold–protein G conjugate as an alternative screening test for bovine and ovine brucellosis. Trop Anim Health Prod 44, 213–215 (2012). https://doi.org/10.1007/s11250-011-0019-7

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  • DOI: https://doi.org/10.1007/s11250-011-0019-7

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