Epitopic characterisation of Turkish bovine viral diarrhoea virus (BVDV) isolates using monoclonal antibodies

Yeşilbağ, K. and Burgu, I. (2003) Epitopic characterisation of Turkish bovine viral diarrhoea virus (BVDV) isolates using monoclonal antibodies. Acta Veterinaria Hungarica, 51 (2). pp. 237-244. ISSN 0236-6290

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Abstract

In this study, 15 bovine viral diarrhoea viruses (BVDV) isolated from the field in Turkey were characterised for their biotype, cloned and eventually analysed for their epitopic composition in terms of glycoprotein E2. Immunoplaque assay, plaque assay, limiting dilution and streptavidin-biotin-peroxidase techniques were used for biotype characterisation, cloning of cytopathic (cp) and noncytopathic (ncp) biotypes and epitope analysis, respectively. While 14 out of 15 BVDV isolates were distinguished as ncp biotype, 1 isolate was found to be containing both biotypes (cp + ncp). According to the reactivity patterns of isolates with 15 monoclonal antibodies, 4 different antigenic groups could be formed. There were no antigenic differences between the isolates derived from the same animal with various time intervals. On the other hand, biotype clones isolated from the same animal exhibited difference in one epitope. This is the first study describing antigenic characterisation of BVDV field isolates in Turkey.

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