Antiglucocorticoid therapies in
major depression: a review
by
Murphy BE
Department of Medicine,
McGill University Montreal, Canada.
Psychoneuroendocrinology 1997; 22 Suppl 1:S125-32
ABSTRACT
In major depression there are two well-documented biochemical abnormalities:
hypercortisolism, and its resistance to dexamethasone suppression. It therefore
seems reasonable to see if giving drugs which interfere with cortisol
biosynthesis might bring about a remission. An open trial was begun in our
institution of 20 refractory patients with major depression. Aminoglutethimide,
metyrapone, ketoconazole or combinations of these drugs along with a maintenance
dose of cortisol were used for eight weeks. Of the 17 completers, eleven
patients were considered to have good responses and two partial responses. Four
had complete remissions lasting several years. A similar study of four patients
who received oral RU 486 also gave encouraging results. Two patients with
obsessive compulsive disorder associated with depression showed striking
improvement on aminoglutethimide combined with a serotonin re-uptake inhibitor.
In addition to a case report in 1988 by Ravaris et al. of a patient
hypophysectomized for previous Cushing's syndrome whose depression responded to
ketoconazole, several other studies over the past five years have had similar
favorable results. Wolkowitz et al. (1993) gave oral ketoconazole to 10
depressed patients for three weeks which resulted in a significant drop in their
Hamilton Depression Scale ratings. O'Dwyer et al. (1995) conducted a
placebo-controlled single-blind crossover study using lifetyrapone and
maintenance cortisol in eight inpatients for two weeks; six responded. Thakore
and Dinan (1995) studied eight inpatients using ketoconazole for four weeks;
there were five responders and three partial responders. Anand et al. (1995)
conducted a four-week double-blind trial of ketoconazole in a single
treatment-refractory patient with good results. Arana et al. (1995) used a
different approach but one which also leads to suppression of endogenous
corticosteroids-i.e. short-term dexamethasone suppression (4 mg/day for four
days). When tested at 14 days, 7/19 of the dexamethasone group had responded
well while only 1/18 of the placebo group had responded. While these studies
have shortcomings, antiglucocorticoid therapy appears to be an effective tool in
the treatment of major depression. Possible mechanisms are discussed, and a
unifying hypothesis is attempted.
CRF
LHPA
Ketoconazole
Corticosteroids
CRH1
receptor antagonists
Glucocorticoids and mood
Chronic Fatigue Syndrome
Stress, glucocorticoid receptor loss and depression
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