@article{MAKHILLJAVA201211233940,
title = {Interferon-Gamma Enhance Immune Response and Efficacy of Recombinant Subunit Vaccine Against Eimeria tenella in Chickens},
journal = {Journal of Animal and Veterinary Advances},
volume = {11},
number = {23},
pages = {4394-4400},
year = {2012},
issn = {1680-5593},
doi = {javaa.2012.4394.4400},
url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2012.4394.4400},
author = {Jianping,Jinjun and},
keywords = {Eimeria tenella,SO7 antigen,subunit vaccine,adjuvant,interferon-gamma},
abstract = {To effectively control coccidiosis with a subunit vaccine,
the refractile body antigen SO7 adjuvanted with Chicken Interferon-gamma (ChIFN-gamma)
was administered to chickens and its ability to protect against virulent challenge
by E. tenella was evaluated. About 5 days old chickens were subcutaneously
immunized with SO7 antigen (100 μg per chick) mixed with various doses
of ChIFN-gamma or without adjuvant. A boost of the same dose was given at 12
and 19 days of age. The specific antibody response and lymphocyte proliferation
response to SO7 antigen were measured at 5, 12, 19 and 26 days of age. Chickens
in all groups were orally challenged with 1x105 homologous sporulated
oocysts of E. tenella at 26 days of age and killed at 8 days postchallenge.
Results showed that when immunized by antigen adjuvanted with ChIFN-gamma, specific
lymphocyte proliferation in chichens was obviously observed at 19 and 26 days
of age and specific antibody response was obviously observed at 12, 19 and 26
days of age. All groups administered with antigen mixed in adjuvant showed higher
protective immunity compared to PBS control, non-adjuvanted antigen control
in which the group given adjuvanted antigen with 5,000 units ChIFN-gamma showed
significantly stronger adjuvant effects in terms of lower mortality, oocyst
output, lesion score and higher weight gain (p<0.05). Protective immunity
was affected by dose of the adjuvant, no linear dose relationship was observed.
These results suggest that ChIFN-gamma has a strong adjuvant effect at a appropriate
dose and may potentially serve as a vaccine adjuvant against avian coccidiosis.}
}