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Androgen Metabolism in Sebaceous Glands From Subjects With and Without Acne
Diane Thiboutot, MD;
Kathryn Gilliland, BS;
Jan Light, LPN;
Donald Lookingbill, MD
Arch Dermatol. 1999;135:1041-1045.
Objective To determine if there are differences in the activity of 17 -hydroxysteroid dehydrogenase and 5 -reductase (responsible for the production of testosterone and dihydrotestosterone, respectively) in sebaceous glands obtained from men and women with and without acne.
Design Single-center examination of androgen levels and sebaceous gland enzyme activity in a cohort of volunteers.
Setting Academic referral center.
Patients Thirty-four subjects, consisting of 8 women with acne, 10 women without acne, 8 men with acne, and 8 men without acne.
Interventions Single visit for blood sampling and 2 biopsies of forehead skin.
Main Outcome Measures Serum levels of androgens were determined and compared with the activity of 5-reductase and 17-hydroxysteroid dehydrogenase in sebaceous glands microdissected from skin samples.
Results No significant differences in the activity of 5-reductase or 17-hydroxysteroid dehydrogenase in sebaceous glands according to the presence of acne were noted in either men or women. The activity of 5-reductase and 17-hydroxysteroid dehydrogenase was significantly greater in sebaceous glands from men (n=16) than women (n=17). The oxidative activity of 17-hydroxysteroid dehydrogenase was 2-fold higher in men than women. Serum levels of dehydroepiandrosterone sulfate, androstenedione, testosterone, and dihydrotestosterone were significantly higher in women with acne than in women without acne. No differences in serum androgen levels were noted in men on the basis of the presence of acne.
Conclusions Higher serum androgen levels are associated with the presence of acne in women. A role for locally produced androgens in this process, however, cannot be excluded.
From the Section of Dermatology, Division of Internal Medicine, Pennsylvania State University College of Medicine, Hershey (Dr Thiboutot and Mss Gilliland and Light); and Department of Dermatology, The Mayo Clinic at Jacksonville, Jacksonville, Fla (Dr Lookingbill).
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