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No previous study has investigated prospectively the quantitative effect of treatment on antiendometrial antibody levels in endometriosis. We measured antiendometrial antibody levels by an enzyme-linked immunosorbent assay in 35 women with laparoscopically proved endometriosis who were treated for 6 months with danazol (N = 11) or nafarelin (N = 24) in a randomized double-blind study. Levels before treatment were significantly higher than in a control group (P less than .001). Levels were lowered by treatment, but to a significant extent only in the nafarelin group (P less than .001) (danazol group: P = .091). Our data suggest that in relation to antiendometrial antibodies, nafarelin has a suppressive effect which has previously been ascribed only to danazol.


Journal article


Obstet Gynecol

Publication Date





914 - 918


Adult, Autoantibodies, Danazol, Double-Blind Method, Endometriosis, Endometrium, Enzyme-Linked Immunosorbent Assay, Female, Gonadotropin-Releasing Hormone, Humans, Multicenter Studies as Topic, Nafarelin, Pelvic Neoplasms, Pregnadienes, Prospective Studies, Randomized Controlled Trials as Topic