title: Growth-inhibiting antibody responses of humans vaccinated with recombinant outer surface protein A or infected with Borrelia burgdorferi or both.
abstract: Serial serum samples from a 2-year human trial of outer surface protein (Osp) A vaccine were analyzed by Borrelia burgdorferi growth-inhibition assay (GIA) and anti-OspA ELISA to assess the antibody responses of vaccine recipients and subjects with Lyme disease. Although 74% of OspA recipients had a reciprocal GIA titer >/=64 after 3 vaccinations, none of the placebo recipients, even those with Lyme disease, had a GIA titer this high. The correlation between GIA and ELISA titers after 3 doses of vaccine was.84; however, more vaccine recipients had an elevated ELISA titer paired with low GIA titer than had a low ELISA titer with a high GIA titer. OspA-vaccine recipients who acquired Lyme disease had significantly lower serum GIA and ELISA titers after 3 immunizations than did age- and sex-matched OspA recipients without Lyme disease. Thus, vaccinated subjects had antibodies to native antigen on viable cells, and antibody assays with this specificity may predict protection of vaccinees against infection.
authors.affiliation: Departments of Medicine and Microbiology and Molecular Genetics, University of California, Irvine, CA 92697-4025, USA.
authors.forename: C J
authors.initials: CJ
authors.lastname: Luke
authors.forename: M A
authors.initials: MA
authors.lastname: Marshall
authors.forename: J M
authors.initials: JM
authors.lastname: Zahradnik
authors.forename: M
authors.initials: M
authors.lastname: Bybel
authors.forename: B E
authors.initials: BE
authors.lastname: Menefee
authors.forename: A G
authors.initials: AG
authors.lastname: Barbour
mesh_terms: D000368:Aged; D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D001425:Bacterial Outer Membrane Proteins / Q000276:immunology*; D001428:Bacterial Vaccines / Q000276:immunology*; D015748:Borrelia burgdorferi Group / Q000254:growth & development / Q000276:immunology*; D016022:Case-Control Studies; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D008193:Lyme Disease / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D014611:Vaccination; D014614:Vaccines, Synthetic / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D001425:Bacterial Outer Membrane Proteins; D001428:Bacterial Vaccines; D014614:Vaccines, Synthetic; C078167:OMPA outer membrane proteins