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Goodman, W.K. et al.

Specificity of serotonin reuptake inhibitors in the treatment of obsessive-compulsive disorder. Comparison of fluvoxamine and desipramine.

To evaluate whether serotonin reuptake inhibition is critical to the treatment of obsessive-compulsive disorder, 40 outpatients with a principal diagnosis of obsessive-compulsive disorder were randomized in a double-blind fashion to 8 weeks of treatment with either the serotonin reuptake inhibitor fluvoxamine maleate (n = 21) or the norepinephrine reuptake inhibitor desipramine hydrochloride (n = 19). Fluvoxamine was significantly better than desipramine in reducing the severity of obsessive-compulsive symptoms, as measured by the Yale-Brown Obsessive Compulsive Scale and by the global response rate ("responder" equaling "much improved"). Eleven of 21 patients were responders with fluvoxamine compared with 2 of 19 patients with desipramine. Fluvoxamine, but not desipramine, was also effective in reducing the severity of "secondary" depression. Fluvoxamine-induced improvement in symptoms of obsessive-compulsive disorder was not correlated with the severity of baseline depressive symptoms. This study provides additional evidence that the acute serotonin reuptake properties of a drug are predictive of its anti-obsessive-compulsive efficacy. It is hypothesized that the mechanism of action of serotonin reuptake inhibitors in obsessive-compulsive disorder may be related to chronic treatment-induced adaptive changes in presynaptic serotonin receptor function (eg, autoreceptor desensitization) and/or indirect influences on dopaminergic function (eg, in the basal ganglia).[1]

References

Specificity of serotonin reuptake inhibitors in the treatment of obsessive-compulsive disorder. Comparison of fluvoxamine and desipramine. Goodman, W.K., Price, L.H., Delgado, P.L., Palumbo, J., Krystal, J.H., Nagy, L.M., Rasmussen, S.A., Heninger, G.R., Charney, D.S. Arch. Gen. Psychiatry (1990) [Pubmed]

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