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- W2067054402 abstract "Hydroxylations of 3 beta-hydroxy 5 alpha-dihydro C19-steroids are terminal reactions by which male accessory sex organs dispose of intracellular androgens. Cellular androgen egress is of particular interest in benign prostatic hyperplasia (BPH) where the elevated nuclear 5 alpha-dihydrotestosterone-receptor content may be implicated in the etiology of the disease. We here report substitution of hydroxyl groups at C-6 alpha, C-7 beta and predominantly at C-7 alpha of [3H]5 alpha-androstane-3 beta,17 beta-diol on incubation of 3 and 8.5 nM substrate concentrations with minced and explanted human BPH tissue. Fibroblasts isolated from the same prostatectomy specimen hydroxylated 3 nM radiosubstrate mainly at C-6 alpha, with extensive metabolism to 17-oxosteroids. Epithelial cells from the same tissue source substituted to the same extent at the three positions. Competing 3 beta-hydroxysteroid dehydrogenase exceeded hydroxylase activity only in epithelial-cell cultures. Our findings support previous evidence that prostatic epithelial and stromal cells make different contributions to androgen disposition by the 3 beta-hydroxysteroid pathway." @default.
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- W2067054402 date "1985-03-01" @default.
- W2067054402 modified "2023-10-14" @default.
- W2067054402 title "Hydroxylation of [3h]5α-androstane-3β,17β-diol by whole tissue, epithelial cells and fibroblasts from the same hyperplastic human prostate" @default.
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- W2067054402 doi "https://doi.org/10.1016/0022-4731(85)90443-1" @default.
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