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IJEB Vol.48(09) [September 2010] >


Title: Evaluation of immunogenic potential of 75kDa and 56kDa proteins of newcastle disease virus (NDV)
Authors: Arora, Payal
Lakhchaura, B D
Garg, S K
Keywords: Embryonated chicken eggs
New castle disease virus
viral proteins
Issue Date: Sep-2010
Publisher: CSIR
Abstract:  The R2B strain of virus of new castle disease virus (NDV) was propagated in 9-11 day old embryonated chicken eggs via allantoic cavity route and after seven serial passages virus was purified from allantoic fluid. Purified virus was analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis which yielded six major polypeptides ranging from 38-200 kDa. Protein fractions, corresponding to 75 and 56kDa, resembling haemagglutinin-neuraminidase (HN) and fusion (F) proteins were used to ascertain their immunization potential. Immunization of viral proteins was compared with the whole virus vaccine. Among different group of birds, highest haemagglutination inhibition (HI) and enzyme linked immunosorbent assay (ELISA) titers were obtained in birds immunized with whole virus vaccine followed by viral proteins, 75 and 56kDa in combination which was comparable with birds immunized with 56kDa protein alone. Despite lower values of HI and ELISA titers elicited by viral subunits in immunized birds, when challenged with virulent NDV strain, protection accorded by viral proteins in combination (75 +56kDa) or 56kDa alone was comparable with whole virus vaccine.
Page(s): 889-895
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Source:IJEB Vol.48(09) [September 2010]

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