title: Serum bisphenol a concentrations showed gender differences, possibly linked to androgen levels.
abstract: To investigate human exposure to bisphenol A (BPA), a widely used endocrine disruptor, we measured serum BPA concentrations and analyzed the interrelation of BPA with sex-related hormones. BPA was detected in all human sera by a novel enzyme-linked immunosorbent assay. Serum BPA concentrations were significantly higher in normal men (1.49 +/- 0.11 ng/ml; P < 0.01) and in women with polycystic ovary syndrome (1.04 +/- 0.10 ng/ml; P < 0.05) compared with normal women (0.64 +/- 0.10 ng/ml). There were significant positive correlations between serum BPA and total testosterone (r = 0.595, P < 0.001) and free testosterone (r = 0.609, P < 0.001) concentrations in all subjects and likewise between serum BPA and total testosterone (r = 0.559, P < 0.01) and free testosterone (r = 0.598, P < 0.001) concentrations in all female subjects, but not between serum BPA and other sex-related hormone concentrations in any group. These findings showed that there are gender differences in serum BPA concentrations, possibly due to differences in the androgen-related metabolism of BPA.
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
authors.forename: Toru
authors.initials: T
authors.lastname: Takeuchi
authors.forename: Osamu
authors.initials: O
authors.lastname: Tsutsumi
mesh_terms: D000328:Adult; D000728:Androgens / Q000097:blood*; D000735:Androstenedione / Q000097:blood; D001559:Benzhydryl Compounds; D015992:Body Mass Index; D019314:Dehydroepiandrosterone Sulfate / Q000097:blood; D004797:Enzyme-Linked Immunosorbent Assay; D004958:Estradiol / Q000097:blood; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D010636:Phenols / Q000097:blood*; D011085:Polycystic Ovary Syndrome / Q000097:blood*; D011388:Prolactin / Q000097:blood; D012737:Sex Factors; D013739:Testosterone / Q000097:blood; D000098826:Bisphenol A Compounds
chemical_list: D000728:Androgens; D000735:Androstenedione; D001559:Benzhydryl Compounds; D019314:Dehydroepiandrosterone Sulfate; D004958:Estradiol; D005640:Follicle Stimulating Hormone; D007986:Luteinizing Hormone; D010636:Phenols; D011388:Prolactin; D013739:Testosterone; C006780:bisphenol A; D000098826:Bisphenol A Compounds