Cited by 352Hormonal and reproductive studiesAdrenal Hormones and DisordersSteroid Chemistry and Biochemistry

Physiological changes in dehydroepiandrosterone are not reflected by serum levels of active androgens and estrogens but of their metabolites: intracrinology.

Labrie, Fernand, Bélanger, Alain, Cusan, Lionel, Candas, Bernard·1997·The Journal of Clinical Endocrinology & Metabolism

Abstract

This study analyzes in detail the serum concentration of the active androgens and estrogens, as well as a series of free and conjugated forms of their precursors and metabolites, after daily application for 2 weeks of 10 mL 20% dehydroepiandrosterone (DHEA) solution on the skin to avoid first passage through the liver. In men, DHEA administration caused 175%, 90%, 200% and 120% increases in the circulating levels of DHEA and its sulfate (DHEA-S), DHEA-fatty acid esters, and androst-5-ene-3 beta,17 beta-diol, respectively, with a return to basal values 7 days after cessation of the 14-day treatment. Serum androstenedione increased by approximately 80%, whereas serum testosterone and dihydrotestosterone (DHT) remained unchanged. In parallel with the changes in serum DHEA, the concentrations of the conjugated metabolites of DHT, namely androsterone glucuronide, androstane-3 alpha,17 beta-diol-G, and androstane-3 beta,17 beta-diol-G increased by about 75%, 50%, and 75%, respectively, whereas androsterone-sulfate increased 115%. No consistent change was observed in serum estrone (E1) or estradiol (E2) in men receiving DHEA, whereas serum E1-sulfate and E2-sulfate were slightly and inconsistently increased by about 20%, and serum cortisol and aldosterone concentrations were unaffected by DHEA administration. Almost superimposable results were obtained in women for most steroids except testosterone, which was about 50% increased during DHEA treatment. This increase corresponded to about 0.8 nM testosterone, an effect undetectable in men because they already have much higher (approximately 15 nM) basal testosterone levels. In women, the serum levels of the conjugated metabolites of DHT, namely androsterone glucuronide, androstane-3 alpha,17 beta-diol-G, androstane-3 beta,17 beta-diol-G, and androsterone-sulfate were increased by 125%, 140%, 120% and 150%, respectively. The present study demonstrates that the serum concentrations of testosterone, DHT, E1, and E2 are poor indicators of total androgenic and estrogenic activity. However, the esterified metabolites of DHT appear as reliable markers of the total androgen pool, because they directly reflect the intracrine formation of androgens in the tissues possessing the steroidogenic enzymes required to transform the inactive precursors DHEA and DHEA-S into DHT. As well demonstrated in women, who synthesize almost all their androgens from DHEA and DHEA-S, supplementation with physiological amounts of exogeneous DHEA permits the biosynthesis of androgens limited to the appropriate target tissues without leakage of significant amounts of active androgens into the circulation. This local or intracrine biosynthesis and action of androgens eliminates the inappropriate exposure of other tissues to androgens and thus minimizes the risks of undesirable masculinizing or other androgen-related side effects of DHEA.

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Crossref · 10.1210/jcem.82.8.4161

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Authors
Labrie, F., Bélanger, A., Cusan, L., & Candas, B.
Affiliations
Centre hospitalier universitaire de Québec (CA)
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
1997-08
Volume
82
Issue
8
Pages
2403-2409
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2021443932
Cited by
350
References
41
Citations by year
2026: 1 · 2025: 5 · 2024: 6 · 2023: 3 · 2022: 4 · 2021: 6 · 2020: 4 · 2019: 4 · 2018: 7 · 2017: 12 · 2016: 4 · 2015: 10 · 2014: 8 · 2013: 8 · 2012: 3
FWCI
13.35
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
dehydroepiandrosterone, DHEA sulfate, androstenedione, androsterone glucuronide, androsterone sulfate, estrone sulfate, estradiol sulfate, intracrinology, steroid metabolism, sex differences, estradiol
MeSH terms
Administration, Cutaneous, Aged, Aldosterone, Androgens, Androstenedione, Dehydroepiandrosterone, Estradiol, Estrogens, Estrone, Fatty Acids, Female, Glucuronates, Humans, Hydrocortisone, Liver, Male, Middle Aged, Dihydrotestosterone, Testosterone, Dehydroepiandrosterone Sulfate

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