Add time:08/29/2019         Source:sciencedirect.com

Trifluoperazine (cas 117-89-5), a typical antipsychotic drug, not only antagonizes dopamine D2 receptors but also enhances serotonin 5-HT2 receptor-mediated behavior. Moreover, trifluoperazine suppresses human purinergic receptor P2X7 responses and calmodulin. However, the effect of trifluoperazine on marble-burying behavior, which has been considered an animal model of obsessive–compulsive disorder (OCD), has not been studied. Here, we examined the effect of trifluoperazine on marble-burying behavior in mice. Oral administration of paroxetine, a selective serotonin reuptake inhibitor, significantly reduced marble-burying behavior without affecting total locomotor activity. Similar results were obtained for trifluoperazine (3 mg/kg). The D2 receptor agonist, quinpirole (0.03 mg/kg, intraperitoneal [i.p.]), and 5-HT2A receptor antagonist, ketanserin (0.3 mg/kg, i.p.), significantly counteracted this reduction of marble-burying behavior by trifluoperazine. These results show that trifluoperazine reduces marble-burying behavior via D2 and 5-HT2A receptors, and may be a useful drug for the treatment of OCD.

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