'Morning After' Pill Helps
Psychotic Depression: Study
(Oct. 8, 2002) It's stirred up much
controversy, but the abortion pill known as RU486, also called
mifepristone, appears to have another use that few are likely to oppose: a
treatment for psychotic depression.
A small study on a group of 30 volunteers at
Stanford University indicated that the abortion pill resulted in improvements
in symptoms for psychotic depression, which can include not
only feelings of hopelessness and sadness, but hallucinations and
delusions.
"Some psychotically depressed patients are
dramatically better within a few days," says Alan Schatzberg, MD, chair of
psychiatry and behavioral sciences at Stanford. They stop hearing voices and
having pessimistic kinds of delusions, like they're dying or the world is
ending. We've seen the response within a four day study. This is fairly
dramatic."
Traditionally, patients with psychotic
depression receive one of two treatments: combined antidepressant and
antipsychotic medication, or electroconvulsive therapy (ECT). Even when
effective, both treatments are relatively slow and can leave symptoms that last
for months.
"With mifepristone (RU-486) there's a very
quick intervention. The patients often feel better and then we can put them on
conventional antidepressants without the antipsychotics or ECT,"
Schatzberg says. "What's interesting is that the results are not
effervescent. The patients feel better and it lasts. Nobody's had to come back,
nobody's had to undergo ECT."
The social implications of the treatment are
profound, Schatzberg says, both because mifepristone might eliminate the need
for shock treatments and because it comes from a drug with other uses that some
people don't like.
Originally mifepristone was developed as a
steroid treatment for Cushing's disease, to block the adrenal hormone cortisol.
But since progesterone receptors and cortisol receptors are structurally
related, mifepristone also blocks progesterone, an effect that makes it useful
as an abortifacient and, in smaller doses, as an emergency
contraceptive.
Research over the last
17 years has revealed that cortisol, a hormone released during times of
significant stress, is extremely elevated in psychotically depressed patients.
It seems their sustained levels of cortisol create a chronic stress reaction.
This in turn may cause psychotic depression, including memory problems, sleep
disturbances and hallucinations.
The research, published in the journal
Biological Psychiatry, suggests that even a week on the pill can reduces
surges of the stress hormone cortisol, which is strongly linked to psychotic
depression.
Since the risk of suicide is greater with this
form of depression, the researchers say they expect that RU486 could save
lives.
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