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Hormone studies in females with androgenic hairloss.

Reports on hormone analysis in androgenic hairloss in the female show partly contradicting results. Elevated as well as normal-range androgen levels have been found. The present study aimed at the investigation of a possibly more differentiated hormonal constellation by hormone analysis and additional determination of the hypophyseal level by the thyrotropin-releasing hormone (TRH) test. In 46 female patients with androgenic hairloss blood sampling for hormone analysis was performed. Determination of the androgens testosterone (T), androstenedione (A), dehydroepiandrosterone sulfate (DHEAS), 17-hydroxy-progesterone acetate (17-OHP) and free testosterone (FT), of sex-hormone-binding globulin (SHBG), estradiol (E2), cortisol (F) and the hypophyseal luteinizing hormone (LH) and follicle-stimulating hormone (FSH) was performed by standard radioimmunoassay methods. The TRH-test is based on feedback mechanisms between the hypothalamic TRH which stimulates hypophyseal TSH and PRL release. Thus, even mild forms of hypothyroidism or hyperprolactinaemia can be detected. The control group for the TRH test consisted of 45 volunteer females without hairloss or any other hormonal or menstrual disturbances. Statistical analysis was performed according to the Wilcoxon two-sample test. The results of the study show no significant elevation of androgens in females with androgenic hairloss, but a more complex condition with involvement of the glandula suprarenalis and the hypophyseal level. Significantly elevated TSH levels prior to and after TRH stimulation in the hairloss group indicate that hypothyroidism may be an important hormonal disturbance in androgenic hairloss. Interactions between hypothyroidism and androgen metabolism are possible at various links.(ABSTRACT TRUNCATED AT 250 WORDS)

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