title: Relation between antigen release and immune response of oil adjuvanted vaccines in chickens.
abstract: The relationship between release properties of the model antigen, bovine serum albumin (BSA), from formulations in vitro and immune response after administration of various oil adjuvanted vaccines containing liquid paraffin was examined in chickens. The vaccine prepared at an hydrophile-lipophile-balance (HLB) number of 4.8 showed slower release of BSA and higher immune response on injected chickens than that with an HLB number of 6.0. Decreases of aqueous volume ratio in the formulation also led to slower release of BSA and higher immune response. The slower release rate of BSA showed higher ELISA antibody titer even at 20 weeks after vaccination. The ELISA antibody titer inversely was related to the constant release rate, k, calculated from the in vitro release test. The correlation coefficient was 0.863. The immune response of oil adjuvanted vaccines containing Haemophilus paragallinarum agreed well with these results with BSA. Our results indicated that a stronger and more prolonged immune response of oil adjuvanted vaccines was achieved by slower release rate of antigen from the formulation. In addition, there was a good correlation between immune response and the value of k.
authors.affiliation: Aburahi Laboratories Shionogi & Co., Ltd., Koka-gun, Shiga, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Fukanoki
authors.forename: K
authors.initials: K
authors.lastname: Matsumoto
authors.forename: H
authors.initials: H
authors.lastname: Mori
authors.forename: R
authors.initials: R
authors.lastname: Takeda
mesh_terms: D000276:Adjuvants, Immunologic / Q000592:standards; D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000942:Antigens, Bacterial / Q000276:immunology*; D001428:Bacterial Vaccines / Q000276:immunology* / Q000592:standards; D001681:Biological Assay; D002645:Chickens / Q000276:immunology*; D003692:Delayed-Action Preparations; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D006190:Haemophilus / Q000276:immunology*; D006192:Haemophilus Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary; D006385:Hemagglutination Inhibition Tests / Q000662:veterinary; D006601:Hexoses / Q000737:chemistry; D010232:Paraffin / Q000737:chemistry; D011136:Polysorbates / Q000737:chemistry; D011201:Poultry Diseases / Q000276:immunology / Q000517:prevention & control; D012710:Serum Albumin, Bovine / Q000276:immunology*; D013047:Specific Pathogen-Free Organisms; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry; D014611:Vaccination / Q000662:veterinary
chemical_list: D000276:Adjuvants, Immunologic; D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001428:Bacterial Vaccines; D003692:Delayed-Action Preparations; D006601:Hexoses; D011136:Polysorbates; D013501:Surface-Active Agents; C058854:sorbitan sesquioleate; D012710:Serum Albumin, Bovine; D010232:Paraffin