Protective immunization against Helicobacter stimulates long-term immunity.
Immunization with an oral vaccine composed of whole cell sonicates of Helicobacter felis plus cholera toxin (CT) can protect mice from H. felis challenge. The aim of this study was to determine whether this protective immunity was long-lived. Mice were given the vaccine then left for up to 15 months before challenge. After 15 months, all mice were still protected from H. felis infection, indicating that oral immunization using bacterial antigens plus CT can stimulate long-term local immunological memory.
Radcliff
F J
FJ
School of Microbiology and Immunology, University of New South Wales, Sydney, Australia.
Chen
M
M
Lee
A
A
D000818:Animals; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000276:immunology*; D002772:Cholera Toxin / Q000008:administration & dosage / Q000276:immunology; D005260:Female; D016481:Helicobacter Infections / Q000276:immunology / Q000517:prevention & control*; D018928:Immunity, Mucosal; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000097:blood; D051379:Mice; D008807:Mice, Inbred BALB C; D012463:Saliva / Q000276:immunology; D013997:Time Factors
D001428:Bacterial Vaccines; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D002772:Cholera Toxin