The effect of flutamide on basal and ACTH-stimulated plasma levels of adrenal androgens in patients with advanced prostate cancer

S. Balzano, M. Cappa, R. Migliari, R. M. Scarpa, E. Danielli, G. Campus, C. Pintus, V. Sica, E. Usai, E. Martino

Research output: Contribution to journalArticle

Abstract

The effect of flutamide on basal and ACTH-stimulated plasma levels of adrenal androgens was investigated in 6 patients with untreated advanced prostate cancer, aged 52–75 yr. Flutamide was administered (250 mg three times daily) for 10 days; before and after treatment, a synthetic ACTH1 -24 stimulation test (250 µg im, with blood sampling immediately before and 60 min after the stimulus) was performed. Basal plasma 170H-pregnenolone (Δ5-170HP), 170H-progesterone (A4-170HP), androstenedione (A), dehydroepiandrosterone (DHEA) and its sulphate (DHEAS) were unchanged by flutamide treatment. In contrast, basal plasma testosterone (T) concentrations significantly increased (p <0.05). The response of Cortisol Δ 4-170HP, Δ 5-170HP, A and DHEA to ACTH, as well as the ACTH-stimulated Δ5-170HP/Δ4-170HP, Δ5-170HP/DHEA, Δ4-170HP/A and DHEA/A ratios, were unchanged by flutamide treatment. These findings indicate that: a) Short-term flutamide administration enhances testicular steroidogenesis, via augmented LH pulse frequency; b) Adrenal steroidogenesis seems to be not affected by the drug, since ACTH-stimulated plasma levels of adrenal androgens and precursors/products ratios were unchanged.

Original languageEnglish
Pages (from-to)693-696
Number of pages4
JournalJournal of Endocrinological Investigation
Volume11
Issue number10
DOIs
Publication statusPublished - 1988

Keywords

  • adrenal androgens
  • antiandrogens
  • Flutamide
  • prostate cancer

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism

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