1. Restoring testosterone levels by adding dehydroepiandrosterone to a drospirenone containing combined oral contraceptive: I. Endocrine effects.
- Author
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Zimmerman Y, Foidart JM, Pintiaux A, Minon JM, Fauser BC, Cobey K, and Coelingh Bennink HJ
- Subjects
- Adolescent, Adult, Androgen Antagonists adverse effects, Androstane-3,17-diol analogs & derivatives, Androstane-3,17-diol blood, Androstenedione blood, Belgium, Dehydroepiandrosterone Sulfate blood, Double-Blind Method, Drug Combinations, Female, Humans, Hypogonadism blood, Hypogonadism chemically induced, Sex Hormone-Binding Globulin analysis, Solubility, Testosterone agonists, Testosterone antagonists & inhibitors, Testosterone chemistry, Young Adult, Androstenes adverse effects, Contraceptives, Oral, Combined adverse effects, Dehydroepiandrosterone therapeutic use, Ethinyl Estradiol adverse effects, Hypogonadism prevention & control, Sex Hormone-Binding Globulin agonists, Testosterone blood, Up-Regulation drug effects
- Abstract
Objectives: Combined oral contraceptives (COCs) decrease testosterone (T) levels. This study investigated restoration of T and other androgen concentrations during COC use by 'co-administration' of dehydroepiandrosterone (DHEA)., Study Design: In this randomized, double-blind, placebo-controlled study in 99 new COC starters (18-35 years old with body mass index range 18-34 kg/m²), a COC containing 30mcg ethinylestradiol (EE) and 3 mg drospirenone (DRSP) was used for 3cycles, followed by 6cycles of the same COC combined with either 50 mg/day DHEA or placebo. Total T, albumin, sex hormone-binding globulin (SHBG), DHEA-sulfate (DHEA-S), Δ4-androstenedione (AD), 3α-androstanediol glucuronide (ADG) and estradiol (E₂) were measured, whereas free T and the free T index (FTI) were calculated. Assessments took place at baseline (no COC use), after the run-in period (COC use alone) and during the treatment period (DHEA or placebo)., Results: During COC use alone, androgen levels decreased, especially total T by 62% and free T by 86%, and SHBG increased by 243%. Total T increased with DHEA compared to placebo (change from end of run-in period to end of treatment period -- 1.3±1.2 nmol/L vs. 0.0±0.4 nmol/L; p<.0001) -- and was restored to baseline levels. Free T and the FTI increased significantly (p<.0001), but the free T level was still 53% below baseline levels. DHEA-S, AD and ADG increased significantly to levels above baseline (p<.0001 for each). DHEA had no effect on SHBG, albumin and E₂., Conclusions: An EE/DRSP containing COC strongly suppressed endogenous androgen concentrations in all users. The addition of 50 mg DHEA to a COC regimen containing EE/DRSP restored total T to baseline levels, but free T levels were restored by only 47% as most of the T remains bound to SHBG., Implications: When using a COC that increases SHBG considerably, a daily dose of 50 mg DHEA is insufficient to normalize free T levels completely., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
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