title: Transcutaneous immunization with a 40-kDa outer membrane protein of Porphyromonas gingivalis induces specific antibodies which inhibit coaggregation by P. gingivalis.
abstract: This study seeks to assess the potential of a 40-kDa outer membrane protein of Porphyromonas gingivalis (40k-OMP) as a transcutaneous vaccine against chronic periodontitis. Transcutaneous immunization (TCI) of mice with 40k-OMP alone elicited 40k-OMP-specific IgG antibody (Ab) responses in both serum and saliva. When administered with cholera toxin (CT) as adjuvant, TCI with 40k-OMP not only elevated IgG Abs as noted above, but also induced IgA responses in serum but not in saliva. Salivary IgG from mice given 40k-OMP alone or 40k-OMP plus CT showed higher binding levels to the 40k-OMP than did that of non-immunized mice. Ab-forming cell (AFC) analysis revealed high numbers of 40k-OMP-specific IgG AFCs in the spleen but low numbers in the salivary glands of mice given 40k-OMP alone or 40k-OMP plus CT. Since 40k-OMP-specific IgG inhibited the coaggregation of P. gingivalis vesicles and S. gordonii, TCI with 40k-OMP may be a useful tool in the quest to prevent P. gingivalis infection.
authors.affiliation: Clinical Pathology, Nihon University Graduate School of Dentistry at Matsudo, 2-870-1 Sakaecho-Nishi, Matsudo, Chiba 271-8587, Japan.
authors.forename: Satomi
authors.initials: S
authors.lastname: Maeba
authors.forename: Shigeo
authors.initials: S
authors.lastname: Otake
authors.forename: Jun
authors.initials: J
authors.lastname: Namikoshi
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Shibata
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Hayakawa
authors.forename: Yoshimitsu
authors.initials: Y
authors.lastname: Abiko
authors.forename: Masafumi
authors.initials: M
authors.lastname: Yamamoto
mesh_terms: D000276:Adjuvants, Immunologic / Q000008:administration & dosage / Q000494:pharmacology; D000279:Administration, Cutaneous; D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis / Q000097:blood; D001425:Bacterial Outer Membrane Proteins / Q000008:administration & dosage / Q000276:immunology*; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000276:immunology*; D016866:Bacteroidaceae Infections / Q000517:prevention & control*; D002772:Cholera Toxin / Q000008:administration & dosage / Q000494:pharmacology; D007070:Immunoglobulin A / Q000097:blood; D007074:Immunoglobulin G / Q000032:analysis; D051379:Mice; D008807:Mice, Inbred BALB C; D023421:Models, Animal; D008970:Molecular Weight; D010518:Periodontitis / Q000517:prevention & control*; D016966:Porphyromonas gingivalis / Q000276:immunology*; D012463:Saliva / Q000276:immunology
chemical_list: D000276:Adjuvants, Immunologic; D000907:Antibodies, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001428:Bacterial Vaccines; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D002772:Cholera Toxin