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The aim was to study 3 alpha-androstanediol glucuronide (3AG) plasma levels and its relationship with 5-ene and 4-ene steroids in children with the benign form of precocious pubarche (precocious adrenarche). Sixty-five children with precocious adrenarche (PA), aged 3.6-8.2 yr (55 girls and 10 males) and 15 normal age-matched children were studied. We evaluated plasma androstenedione (A), dehydroepiandrosterone (DHA), its sulfate (DHA-S), testosterone (T), dihydrotestosterone (DHT), its glucuronide (DHTG), 3 alpha-androstanediol (3Ad) and its glucuronide (3AG) in all subjects. All androgens are expressed as mean +/- SD. We found significantly higher plasma levels not only in glandular androgens but also in peripheral androgens (A, 2.4 +/- 1.5 nM vs 0.79 +/- 0.46 nM, p < 0.001; DHA, 9.8 +/- 4.9 vs 2.7 +/- 0.76 ng/dl, p < 0.001; DHA-S, 3.4 +/- 2 microM vs 2.4 +/- 0.65 microM, p < 0.05; T, 0.74 +/- 0.5 nM vs 0.4 +/- 0.1 nM, p < 0.001; DHT, 0.36 +/- 0.13 nM vs 0.12 +/- 0.05 nM, p < 0.001; 3Ad, 0.13 +/- 0.1 nM vs 0.054 +/- 0.03 nM, p < 0.001; DHTG, 0.5 +/- 0.3 nM vs 0.26 +/- 0.09 nM p < 0.01). As far as the plasma 3AG levels are concerned we found significantly higher values in PA with respect to controls (1.17 +/- 0.7 nM vs 0.61 +/- 0.04 nM, p < 0.01), suggesting that 3AG may be considered a marker of skin androgen utilization.(ABSTRACT TRUNCATED AT 250 WORDS)
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