Serum Concentration of Androstenediol and Androstenediol Sulfate in Patients with Hyperthyroidism and Hypothyroidism.

Abstract

Abstract.Androstenediol (5-androsten-3 j3, 17~-diol, ADIOL) and androstenediol 3-sulfate (ADIOLS) are active metabolites of dehydroepiandrosterone (DHEA) and DHEA sulfate (DHEAS), respectively, and have estrogenic activity and immunoregulatory function.We examined serum concentrations of ADIOL, ADIOLS, DHEA, DHEAS and pregnenolone sulfate (5-pregnen-3j3-o1-20-one sulfate, PREGS) in patients with Graves' thyrotoxicosis (male/female 9/14), hypothyroidism (11/20) and in normal controls (14/29). In hypothyroidism serum levels of all these steroids were significantly decreased in both genders. In hyperthyroidism, in contrast, serum levels of ADIOLS (male 1.49±0.69, female 0.64±0.31 imol/I), DHEAS (male 7.43±3.91, female 5.13±2.03 tcmol/1), and PREGS (male 1.13±0.58, female 1.07±0.85 timol/I) were markedly increased, but serum concentrations of ADIOL and DEHA were not significantly different from controls (ADIOLS male 0.36±0.33, female 0.14±0.09 pmol/1; DHEAS male 2.88± 1.70, female 1.86± 1.03 pmol/1; PREGS male 0.18±0.12, female 0.11 ±0.08 pmol/l; ADIOL male 3.76±1.35, female 1.91 ± 1.17 nmol/l; DHEA male 9.23±3.49, female 13.5± 10.8 nmol/1). Serum concentrations of all these steroids correlated with the serum concentration of the thyroid hormones in these patients.Serum albumin and sex hormone-binding globulin concentrations were not related to these changes in the concentrations of steroids. These findings indicate that serum concentrations of ADIOLS, ADIOL, DHEAS, DHEA and PREGS were decreased in hypothyroidism, whereas serum ADIOLS, DHEAS and PREGS concentrations were increased but ADIOL and DHEA were normal in hyperthyroidism.Thyroid hormone may stimulate the synthesis of these steroids and sulfotransferase is speculated to be increased in hyperthyroidism. Increased ADIOLS might contribute to menstrual disturbances and gynecomastia in hyperthyroidism.

Inhibin B Levels in Hypothyroid Males

“…However, in hypothyroid males, testosterone and free testosterone are low and estradiol levels are normal (18,24) and have no apparent impact on gonadotrophin secretion because there is no reciprocal increase in FSH and LH. In sheep and rats, inhibin B suppresses FSH synthesis and secretion (25,26).…”

Evaluation of a Candidate Reference Measurement Procedure for Serum Free Testosterone Based on Ultrafiltration and Isotope Dilution–Gas Chromatography–Mass Spectrometry

“…For that reason, we injected decreasing amounts of the derivative and found that at Ͻ500 pg the signal-to-noise ratio was already Ͻ3. On this basis, we assume that interference after processing of a serum sample containing physiologic concentrations of (3␤,17␤)-androst-5-ene-3,17-diol would be very unlikely (32 ).…”

Hypothyroidism, Oxidative Stress and Reproduction

“…The exaggerated T response to hCG also underlines the role of hypothalamic-pituitary unit rather than a primary testicular effect. A decrease has also been shown in DHEA, DHEAS, andostendiol and pregnenolone sulfate (Tagawa et al, 2001). The endocrine dysfunction partially explain the sexual symptoms complained in such patients, such as decreased libido or erectile dysfunction (Carani et al, 2005;.…”