Effect of paroxetine on marble-burying behavior in mice
Shinomiya K, Fujii Y, Sugimoto Y, Azuma N, Tokunaga S, Kitazumi K, Kamei C.
Department of Medicinal Pharmacology,
Okayama University Graduate School of Medicine,
Dentistry and Pharmaceutical Sciences, Okayama, Japan.
Methods Find Exp Clin Pharmacol. 2005 Dec;27(10):685-7.


The present study was undertaken to investigate the effect of paroxetine, a selective serotonin reuptake inhibitor (SSRI), on marble-burying behavior in mice in comparison with those of fluvoxamine and clomipramine. Marble-burying test is extensively used as an animal model for obsessive/compulsive disorder. A significant inhibition in marble-burying behavior was observed with paroxetine, at a dose of 10 mg/kg. The earlier SSRI, fluvoxamine, also significantly inhibited marble-burying behavior at a dose of 30 mg/kg. Although clomipramine, a tricyclic antidepressant, caused an inhibition in marble-burying behavior, a high dose of 100 mg/kg was needed to show a significant effect. On the other hand, all the drugs used in the present study showed no significant changes in spontaneous locomotor activity at doses inhibiting marble-burying behavior. In conclusion, it was confirmed that paroxetine has a potent inhibitory effect on marble-burying behavior in mice, and could have a similar antiobsessive/anticompulsive activity in human beings.
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