PMID- 15507316 OWN - NLM STAT- MEDLINE DCOM- 20041229 LR - 20071114 IS - 0165-2427 (Print) IS - 0165-2427 (Linking) VI - 102 IP - 3 DP - 2004 Dec 8 TI - Oral immunization induces local and distant mucosal immunity in swine. PG - 329-38 AB - Transmission of porcine reproductive and respiratory syndrome virus (PRRSV) in semen and reproductive disease in pregnant swine might be reduced by vaccines that induce mucosal immunity in the reproductive tract. Cholera toxin (CT), when delivered orally, is a potent mucosal adjuvant and immunogen in swine. To determine if oral immunization additionally elicits immunity at distant mucosal surfaces, we examined antibody responses to CT-B subunit in the reproductive tract and oral cavity. Orally administered CT induced distant mucosal immunity, as measured by antibodies to CT-B subunit in saliva and vaginal secretions. Presentation of PRRSV nucleocapsid as a genetic fusion with CT resulted in local mucosal antibody production, but no response was observed in vaginal secretions. The results demonstrate the feasibility of using orally administered CT for the induction of immunity to reproductive pathogens in swine. However, effective induction of PRRSV-specific immune responses in the reproductive tract requires a better understanding of the mechanisms of antigenicity and adjuvanticity at distant mucosal sites. FAU - Hyland, Kendra AU - Hyland K AD - Department of Veterinary and Biomedical Sciences, University of Minnesota, 1971 Commonwealth Avenue, St. Paul, MN 55108, USA. FAU - Foss, Dennis L AU - Foss DL FAU - Johnson, Craig R AU - Johnson CR FAU - Murtaugh, Michael P AU - Murtaugh MP LA - eng GR - 5 T32 DA-07097-22/DA/NIDA NIH HHS/United States GR - K08AI01396/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Vet Immunol Immunopathol JT - Veterinary immunology and immunopathology JID - 8002006 RN - 0 (Antibodies, Viral) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Vaccines, Conjugate) RN - 0 (Viral Vaccines) RN - 9012-63-9 (Cholera Toxin) SB - IM MH - Administration, Oral MH - Animals MH - Antibodies, Viral/biosynthesis/blood MH - Cholera Toxin/immunology MH - Female MH - Immunity, Mucosal/*immunology MH - Intestinal Mucosa/immunology MH - Porcine respiratory and reproductive syndrome virus/immunology MH - Recombinant Fusion Proteins/immunology MH - Swine/*immunology MH - Vaccines, Conjugate/immunology MH - Viral Vaccines/*administration & dosage/immunology EDAT- 2004/10/28 09:00 MHDA- 2004/12/30 09:00 CRDT- 2004/10/28 09:00 PHST- 2004/10/28 09:00 [pubmed] PHST- 2004/12/30 09:00 [medline] PHST- 2004/10/28 09:00 [entrez] AID - S0165-2427(04)00266-1 [pii] AID - 10.1016/j.vetimm.2004.09.015 [doi] PST - ppublish SO - Vet Immunol Immunopathol. 2004 Dec 8;102(3):329-38. doi: 10.1016/j.vetimm.2004.09.015.