Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 548177
Title The development of a multiplex serological assay for avian influenza based on Luminex technology
Author(s) Germeraad, Evelien; Achterberg, René; Venema, Sandra; Post, Jacob; Leeuw, Olav de; Koch, Guus; Wal, Fimme Jan van der; Beerens, Nancy
Source Methods : a companion to Methods in enzymology 158 (2019). - ISSN 1046-2023 - p. 54 - 60.
DOI https://doi.org/10.1016/j.ymeth.2019.01.012
Department(s) Virology
Infection Biology
Publication type Refereed Article in a scientific journal
Publication year 2019
Availibility Full text available from 2020-01-30
Keyword(s) Avian influenza - Luminex - Multiplex - Poultry - Serology - Subtyping
Abstract

Avian influenza (AI) is an infectious disease in birds with enormous impact on the poultry sector. AI viruses are divided into different subtypes based on the antigenicity of their surface proteins haemagglutinin (HA) and neuraminidases (NA). In birds, 16 HA subtypes and 9 NA subtypes are detected in different combinations. Traditional serological methods for the subtyping of AI antibodies are labour-intensive and have to be performed for each HA and NA subtype separately. This study describes the development of a multiplex serological assay for subtyping AI antibodies in poultry sera using Luminex xMAP technology. This multiplex assay allows the detection of all AI serotypes in one single assay. For all HA and NA subtypes, recombinant proteins were purified and coupled to colour-coded magnetic bead sets. Using the Luminex MAGPIX device, binding of serum antibodies to the antigens on the bead sets is detected by fluorescent secondary antibodies, and the different bead sets are identified. The results of the multiplex assay were compared with that of the traditional singleplex assays. We show that serotyping using the novel multiplex serological assay is consistent with the results of the traditional assays in 97.8% of the reference sera and in 90.8% of the field sera. The assay has a higher sensitivity than the traditional assays, and requires a smaller sample volume. Therefore, the assay will allow complete AI-serotyping in small volumes of field sera, which will improve the monitoring of AI subtypes circulating in poultry significantly.

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