title: An enzyme immunoassay to detect specific antibodies to protein and lipopolysaccharide antigens of Chlamydia trachomatis.
abstract: We have developed an enzyme immunoassay to measure antibodies to the proteins and lipopolysaccharide (LPS) of Chlamydia trachomatis. Antibodies to proteins could be differentiated from antibodies to lipopolysaccharide (LPS) by treatment of the antigen with periodate or Triton X-100. Some important parameters of the oxidation by periodate were studied by comparing the response of several monoclonal antibodies. Four types of response could be observed: type I, a reduced response after mild or strong oxidation; type II, a normal response after mild oxidation, but reduced after strong oxidation; type III, not affected; type IV, an increased response after oxidation. Treatment with Triton X-100 had the same effect as mild oxidation and confirmed the response types I, III, and IV. Treatment of antigen with periodate reduced the IgG response measured in sera from patients with evidence of Chlamydia psittaci infection.
authors.affiliation: Laboratory of Virology, National Institute of Public Health and Environmental Protection, Bilthoven, The Netherlands.
authors.forename: J M
authors.initials: JM
authors.lastname: Ossewaarde
authors.forename: J W
authors.initials: JW
authors.lastname: Manten
authors.forename: H J
authors.initials: HJ
authors.lastname: Hooft
authors.forename: A C
authors.initials: AC
authors.lastname: Hekker
mesh_terms: D000907:Antibodies, Bacterial / Q000276:immunology*; D000911:Antibodies, Monoclonal / Q000276:immunology; D000942:Antigens, Bacterial / Q000276:immunology*; D001426:Bacterial Proteins / Q000276:immunology*; D002690:Chlamydia Infections / Q000276:immunology; D002692:Chlamydia trachomatis / Q000276:immunology*; D006801:Humans; D007124:Immunoenzyme Techniques; D008070:Lipopolysaccharides / Q000276:immunology*; D017830:Octoxynol; D010084:Oxidation-Reduction; D011092:Polyethylene Glycols / Q000494:pharmacology; D009956:Psittacosis / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D000911:Antibodies, Monoclonal; D000942:Antigens, Bacterial; D001426:Bacterial Proteins; D008070:Lipopolysaccharides; D011092:Polyethylene Glycols; D017830:Octoxynol