Pasteurellosis in laboratory rabbits: characterization of lipopolysaccharides of Pasteurella multocida by polyacrylamide gel electrophoresis, immunoblot techniques, and enzyme-linked immunosorbent assay.
The lipopolysaccharides (LPSs) of five isolates of Pasteurella multocida from rabbits were characterized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, immunoblots, and enzyme-linked immunosorbent assay. Silver-stained sodium dodecyl sulfate-polyacrylamide gel electrophoresis profiles of purified unaggregated LPSs resembled those of semirough strains of gram-negative enterobacteria and consisted of one or two bands that migrated within an interval just ahead or slightly behind the migration of the Ra chemotype of "Salmonella minnesota," which has a molecular size of 4.3 kilodaltons. Polyclonal rabbit antisera to P. multocida whole cells used in Western blots and enzyme-linked immunosorbent assays of unabsorbed and LPS-absorbed antisera revealed that the LPS of these isolates of P. multocida contained at least two types of antigens: a nonserospecific antigen and a serospecific antigen. The LPSs of four isolates each had a different serospecific antigen. The nonserospecific antigen was expressed in two isolates and was the only demonstrable LPS antigen in one other isolate.
D000818:Animals; D000942:Antigens, Bacterial / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D004797:Enzyme-Linked Immunosorbent Assay; D007106:Immune Sera / Q000276:immunology; D008070:Lipopolysaccharides / Q000276:immunology* / Q000302:isolation & purification; D010325:Pasteurella / Q000032:analysis* / Q000276:immunology; D010326:Pasteurella Infections / Q000662:veterinary*; D011817:Rabbits
D000942:Antigens, Bacterial; D007106:Immune Sera; D008070:Lipopolysaccharides