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OBJECTIVE: This study was designed to assess possible antidepressant effects of dehydroepiandrosterone (DHEA), an abundant adrenocortical hormone in humans. METHOD: Twenty-two patients with major depression, either medication-free or on stabilized antidepressant regimens, received either DHEA (maximum dose = 90 mg/day) or placebo for 6 weeks in a double-blind manner and were rated at baseline and at the end of the 6 weeks with the Hamilton Depression Rating Scale. Patients previously stabilized with antidepressants had the study medication added to that regimen; others received DHEA or placebo alone. RESULTS: DHEA was associated with a significantly greater decrease in Hamilton depression scale ratings than was placebo. Five of the 11 patients treated with DHEA, compared with none of the 11 given placebo, showed a 50% decrease or greater in depressive symptoms. CONCLUSIONS: These results suggest that DHEA treatment may have significant antidepressant effects in some patients with major depression. Further, larger-scale trials are warranted.

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Dehydroepiandrosterone (DHEA) and its sulfate, DHEA-S, are plentiful adrenal steroid hormones that decrease with aging and may have significant neuropsychiatric effects. In this study, six middle-aged and elderly patients with major depression and low basal plasma DHEA f1p4or DHEA-S levels were openly administered DHEA (30-90 mg/d x 4 weeks) in doses sufficient to achieve circulating plasma levels observed in younger healthy individuals. Depression ratings, as well as aspects of memory performance significantly improved. One treatment-resistant patient received extended treatment with DHEA for 6 months: her depression ratings improved 48-72% and her semantic memory performance improved 63%. These measures returned to baseline after treatment ended. In both studies, improvements in depression ratings and memory performance were directly related to increases in plasma levels of DHEA and DHEA-S and to increases in their ratios with plasma cortisol levels. These preliminary data suggest DHEA may have antidepressant and promemory effects and should encourage double-blind trials in depressed patients.

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Ketoconazole, an antiglucocorticoid drug, was administered to 10 hypercortisolemic depressed patients for up to 6 weeks. Three patients dropped out because of side effects or intercurrent illness. The remaining seven had significant ketoconazole-associated decreases in serum cortisol levels and in depression ratings. Antiglucocorticoid agents may be useful probes for investigating the sequelae of hypercortisolemia in patients with major depression.

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Major depressive illness is frequently associated with cortisol hypersecretion. The pathophysiologic significance of this is unknown, although it is possible that hypercortisolemia exacerbates or perpetuates depressive symptoms. In both depression and Cushing's syndrome, certain depressive symptoms are correlated with cortisol levels and, in the latter condition, therapeutic lowering of cortisol levels is associated with remission of psychiatric symptomatology. We review the behavioral effects of anticortisolemic drug administration in Cushing's syndrome and major depression. Preliminary data from small-scale studies suggest that ratings of depressive symptoms in hypercortisolemic major depression may be lowered by such interventions. Such results, if confirmed in larger scale, double-blind studies, might help clarify the role of endocrinologic disturbance in psychiatric symptomatology and might lead to the development of a novel class of antidepressant agent for hypercortisolemic depressed patients.

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