title: Mice immunized with a chlamydial extract have no increase in early protective immunity despite increased inflammation following genital infection by the mouse pneumonitis agent of Chlamydia trachomatis.
abstract: We have determined that immunization with a detergent extract of the mouse pneumonitis agent of Chlamydia trachomatis fails to induce a protective inflammatory immune response following genital infection by C. trachomatis. We demonstrated that mice immunized with the detergent extract have increased cutaneous delayed-type hypersensitivity and increased splenic T-cell proliferation in response to the chlamydial extract. After genital infection by C. trachomatis, extract-sensitized mice had significantly increased genital inflammation (P = 0.044) compared with controls. The inflammation was characterized by significantly increased eosinophils in the genitalia (P < 0.0005) and increased genital edema (P < 0.0005). However, the increased genital inflammation of extract-sensitized mice provided no increase in protection against infection (P = 0.92).
authors.affiliation: University of Pittsburgh Medical Center, Pennsylvania.
authors.forename: S J
authors.initials: SJ
authors.lastname: Blander
authors.forename: A J
authors.initials: AJ
authors.lastname: Amortegui
mesh_terms: D000818:Animals; D002690:Chlamydia Infections / Q000276:immunology*; D002692:Chlamydia trachomatis / Q000276:immunology*; D005260:Female; D005831:Genital Diseases, Female / Q000276:immunology*; D006968:Hypersensitivity, Delayed; D007114:Immunization; D007249:Inflammation / Q000276:immunology; D008213:Lymphocyte Activation; D017258:Medroxyprogesterone Acetate / Q000627:therapeutic use; D051379:Mice; D008807:Mice, Inbred BALB C
chemical_list: D017258:Medroxyprogesterone Acetate