Mucosal response in African catfish after administration of Vibrio anguillarum O2 antigens via different routes.
The aim of this study was to investigate the possibility of mucosal vaccination in African catfish (Clarias gariepinus) with Vibrio anguillarum O2 bacterins. The antigen was administered via different routes: anal intubation, oral administration, intraperitoneal injection and immersion. To monitor the antigen uptake, a competitive ELISA was used. The antibody response was measured using an indirect ELISA. Increased antibody levels were found in bile and mucus upon anal intubation, which was not the case after intraperitoneal injection. The data indicate that oral vaccination of fish may be possible when antigens can reach the second gut segment in sufficient quantities and in the right form as confirmed by the recorded substantial induction of systemic and mucosal immunity. The results obtained are a strong indication for mucosal immune response and the two compartmental models for immune response in fish.
Laboratorium voor Farmacotechnologie en Biofarmacie, Katholieke Universiteit Leuven, Campus Gasthuisberg O+N, Herestraat 49, 3000 Leuven, Belgium. stefaan_vervarcke@hotmail.com
Stefaan
S
Vervarcke
Frans
F
Ollevier
Renaat
R
Kinget
Armand
A
Michoel
D000818:Animals; D000907:Antibodies, Bacterial / Q000276:immunology; D000942:Antigens, Bacterial / Q000008:administration & dosage / Q000276:immunology; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000276:immunology*; D002397:Catfishes; D004333:Drug Administration Routes / Q000662:veterinary; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D005393:Fish Diseases / Q000276:immunology* / Q000382:microbiology; D018928:Immunity, Mucosal / Q000276:immunology*; D018448:Models, Immunological; D014733:Vibrio; D014735:Vibrio Infections / Q000276:immunology / Q000662:veterinary*
D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001428:Bacterial Vaccines