title: Vaccination of cattle with outer membrane protein-enriched fractions of Pasteurella haemolytica and resistance against experimental challenge exposure.
abstract: Administration of an N-lauroylsarcosine-derived outer membrane protein fraction of Pasteurella haemolytica A1 (SCI-1) induced a protective response in calves against intrathoracic challenge exposure with the homologous serovar. Outer membrane proteins from heterologous serovars, A6 and A9, induced partial protection that was associated with their respective similarities to serovar A1 in outer membrane protein profiles derived by use of sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Calves vaccinated with SCI preparations did not have detectable neutralizing antibody to P haemolytica A1 leukotoxin. Antibodies to whole-cell antigens, carbohydrate-protein subunit antigen, and SCI-1 were associated with resistance, which indicates that protein antigens shared among cell surface, carbohydrate-protein subunit, and SCI preparations are immunogenic and enhance resistance to experimental challenge exposure.
authors.affiliation: Department of Veterinary Parasitology, College of Veterinary Medicine, Oklahoma State University, Stillwater 74078, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Morton
authors.forename: R J
authors.initials: RJ
authors.lastname: Panciera
authors.forename: R W
authors.initials: RW
authors.lastname: Fulton
authors.forename: G H
authors.initials: GH
authors.lastname: Frank
authors.forename: S A
authors.initials: SA
authors.lastname: Ewing
authors.forename: J T
authors.initials: JT
authors.lastname: Homer
authors.forename: A W
authors.initials: AW
authors.lastname: Confer
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis / Q000097:blood; D001425:Bacterial Outer Membrane Proteins / Q000276:immunology* / Q000302:isolation & purification; D001428:Bacterial Vaccines; D002417:Cattle; D003902:Detergents; D004591:Electrophoresis, Polyacrylamide Gel; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D008297:Male; D016978:Mannheimia haemolytica / Q000276:immunology*; D010326:Pasteurella Infections / Q000276:immunology* / Q000517:prevention & control; D012521:Sarcosine / Q000031:analogs & derivatives; D014611:Vaccination
chemical_list: D000907:Antibodies, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001428:Bacterial Vaccines; D003902:Detergents; C025231:sarkosyl; D012521:Sarcosine