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Abstract
While many data suggest that Obsessive-Compulsive Disorder (OCD) is an illness accompanied
by dysregulation of the serotonergic system, interesting clinical evidence and animal
studies also suggest possible dysregulation of the dopaminergic (DA) system. In order
to determine whether clomipramine (CMI), an antiobsessional agent, is capable of altering
DA function, we performed a neuroleptic radioreceptor assay (NRRA) on plasma samples
from OCD patients before and after treatment in a double-blind, placebo controlled
trial of CMI. CMI produced mild but significant DA D-2 receptor binding activity in
an in vitro assay. The degree of dopamine binding activity did not correlate with
clinical response to clomipramine. Because it has been suggested that another drug
with antiobsessional efficacy, fluoxetine, may also have dopamine blocking properties,
it may be speculated that antidopaminergic activity in combination with serotonergic
effects is involved in antiobsessional activity of effective agents for some patients.
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Article info
Publication history
Received in revised form:
November 21,
1990
Received:
July 6,
1990
Identification
Copyright
© 1991 Published by Elsevier Inc.