Production of a rabbit anti-cockatiel immunoglobulin G and characterization of its cross-reactivities with immunoglobulin G of other psittacine species
The purpose of this work was to produce rabbit anti-cockatiel immunoglobulin G (IgG) and compare its cross-reactivity with sera from eight other psittacine birds: Quaker parakeet, budgerigar, green-wing macaw, blue-fronted Amazon parrot, eclectus parrot, African grey parrot, Patagonian conure, Moluccan cockatoo. Cockatiel IgG did not bind to protein A or G; therefore, these proteins could not be used in column chromatography to isolate the IgG. A combination of serum IgG precipitation by ammonium sulfate and yolk IgG extraction from egg was loaded in sodium dodecyl sulfate-polyacrylamide gel upon which the IgG was resolved by electrophoresis. The resolved IgG in sodium dodecyl sulfate-polyacrylamide gel was stained with Coomassie blue, cut, crushed in phosphate-buffered saline, and injected into rabbits. The rabbit anti-cockatiel IgG produced in this way reacted with a single protein in gel immunodiffusion assay with all nine psittacine bird sera but not with those of chicken and ostrich. Immunoelectrophoresis confirmed the cross-reactivity of different psittacine sera with the anti-cockatiel IgG serum but not with ostrich and chicken Sera. This antiserum detected antibody responses in sera from cockatiels vaccinated against chlamydial major outer membrane protein in an immunoblot assay.
Publication Source (Journal or Book title)
Baghian, A., Reyes, C., Mendoza, A., Tully, T., & Kousoulas, K. (1999). Production of a rabbit anti-cockatiel immunoglobulin G and characterization of its cross-reactivities with immunoglobulin G of other psittacine species. Avian Diseases, 43 (1), 48-54. https://doi.org/10.2307/1592761