after 7 days of treatment with a variety of antidepressant drugs ( desipramine , imipramine , clomipramine , nortriptyline , nialamide ) , both an increase in alpha 2-receptor density and a decrease in beta-receptor density were observed in the cerebral cortex but not limbic forebrain .
C0003289
antidepressant drugs
C0020934
imipramine