title: Antigen specificity and activity of ovine antibodies induced by immunization with Corynebacterium pseudotuberculosis culture filtrate.
abstract: Sheep were immunized three times with a vaccine composed of filtrate from a 36 h culture of Corynebacterium pseudotuberculosis and a block polymer adjuvant. Immunization resulted in the development of exotoxin-neutralizing antibody. This corresponded to the recognition of a 31.6 kDa protein on sequential immunoblots of ammonium sulfate-precipitated filtrate. In addition sera from vaccinated sheep recognized at least eight bacterial cellular antigens on immunoblots of ether-extracted C. pseudotuberculosis, including bands of 12, 25.1, 31.6, 36.3, 39.8, 63.1, 70, 75 or 79.4 kDa. Sera from these sheep altered the colony growth characteristics of C. pseudotuberculosis in vitro. These results indicate that immunization with soluble C. pseudotuberculosis in vitro. These results indicate that immunization with soluble C. pseudotuberculosis antigen preparations that have been used in toxoid vaccines induces antibody responses to numerous cellular antigens in addition to exotoxin and suggest that serologically mediated antibacterial effects could be an important component in the protection from disease that has been reported following immunization with C. pseudotuberculosis toxoids.
authors.affiliation: Department of Veterinary Sciences, College of Agriculture, University of Wyoming, Laramie 82070.
authors.forename: J A
authors.initials: JA
authors.lastname: Ellis
authors.forename: D A
authors.initials: DA
authors.lastname: Hawk
authors.forename: K W
authors.initials: KW
authors.lastname: Mills
authors.forename: D L
authors.initials: DL
authors.lastname: Pratt
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D001428:Bacterial Vaccines; D003354:Corynebacterium Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary*; D016925:Corynebacterium pseudotuberculosis / Q000276:immunology*; D004591:Electrophoresis, Polyacrylamide Gel; D004797:Enzyme-Linked Immunosorbent Assay; D015151:Immunoblotting; D008970:Molecular Weight; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology / Q000517:prevention & control*
chemical_list: D000907:Antibodies, Bacterial; D001428:Bacterial Vaccines