title: Recombinant major outer membrane protein (MOMP) of Chlamydophila abortus, Chlamydophila pecorum, and Chlamydia suis as antigens to distinguish chlamydial species-specific antibodies in animal sera.
abstract: Recombinant major outer membrane proteins (rMOMP) of Chlamydophila (Ch.) abortus, Ch. pecorum, and Chlamydia (C.) suis were used as antigens to distinguish chlamydial species-specific antibodies in (i) immune sera from six rabbits and three pigs raised against native purified elementary bodies, (ii) serum samples from 25 sows vaccinated with Ch. abortus, and (iii) 40 serum samples from four heifers experimentally infected with Ch. abortus. All post-exposition sera contained chlamydial antibodies as confirmed by strong ELISA seroreactivities against the chlamydial LPS. For the rMOMP ELISA mean IgG antibody levels were at least 5.8-fold higher with the particular rMOMP homologous to the chlamydial species used for immunisation or infection than with heterologous rMOMPs (P <0.001). Preferential rMOMP ELISA reactivities of sera were confirmed by Western blotting. The results suggest that the entire chlamydial rMOMP could provide a species-specific serodiagnostic antigen.
authors.affiliation: Institute of Veterinary Bacteriology, VetSuisse Faculty, University of Zurich, Winterthurerstrasse 270, CH-8057 Zurich, Switzerland. lhoelzle@vetbakt.unizh.ch
authors.forename: Ludwig E
authors.initials: LE
authors.lastname: Hoelzle
authors.forename: Katharina
authors.initials: K
authors.lastname: Hoelzle
authors.forename: Max M
authors.initials: MM
authors.lastname: Wittenbrink
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood / Q000276:immunology*; D000918:Antibody Specificity; D000942:Antigens, Bacterial / Q000276:immunology; D001425:Bacterial Outer Membrane Proteins / Q000276:immunology*; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000276:immunology / Q000382:microbiology*; D002693:Chlamydiaceae / Q000276:immunology / Q000302:isolation & purification*; D002694:Chlamydiaceae Infections / Q000097:blood / Q000276:immunology / Q000382:microbiology / Q000662:veterinary*; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods / Q000662:veterinary*; D005260:Female; D011994:Recombinant Proteins / Q000276:immunology; D013045:Species Specificity; D013552:Swine; D013553:Swine Diseases / Q000175:diagnosis / Q000276:immunology / Q000382:microbiology*
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001425:Bacterial Outer Membrane Proteins; D011994:Recombinant Proteins