Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5832587 | International Immunopharmacology | 2014 | 6 Pages |
â¢Uniform-sized emulsion was prepared by membrane emulsification technique.â¢Uniform-sized emulsion showed low initial release and a faster release rate.â¢Uniform-sized emulsion induced higher antibodies.â¢Uniform-sized emulsion induced significantly greater ratio of CD8+ to CD4+ T cells.â¢Uniform-sized emulsion induced more CD4+CD8+ double positive (DP) T cells.
Water-in-oil (W/O) emulsion is one of the best "one-shot" delivery system for antigen to generate high and durable antibody response. Here a facile method using premixed Shirasu Porous Glass (SPG) membrane emulsification technique was employed to fabricate uniform-sized emulsion and mechanical stirring was employed to prepare non-uniform-sized emulsion as control. In release kinetics studies, uniform-sized emulsion showed low initial release, and during the followed 17Â days, uniform-sized emulsions released antigen faster than emulsions of non-uniform size. In addition, vaccination studies against Newcastle disease virus (NDV) and avian Influenza virus (AIV) demonstrated that emulsion of uniform size induced higher HI antibodies and antigen-specific IgG titers. Furthermore, chickens vaccinated with emulsion of uniform size had a significantly greater ratio of CD8+ T cells to CD4+ T cells and a higher percentage of CD8+CD4+ T cells. Taken together, these results indicated that emulsion of uniform size induced a more potent immune response than emulsion prepared by mechanical stirring, and warranted the use of SPG membrane emulsification technique in generating new avian vaccines.
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