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. 1991;85(3):169-79.
doi: 10.1007/BF01244943.

Antidepressant drugs increase the locomotor hyperactivity induced by MK-801 in rats

J Maj  1 , Z Rogóz, G Skuza
Affiliations

Antidepressant drugs increase the locomotor hyperactivity induced by MK-801 in rats

J Maj et al. J Neural Transm Gen Sect. 1991.

Abstract

MK-801, a non-competitive NMDA receptor antagonist, induced the locomotor hyperactivity in rats. Imipramine (IMI), amitriptyline (AMI), citalopram (CIT) given acutely increased the MK-801-induced locomotor hyperactivity. Mianserin (MIA) showed a similar but weaker effect. Haloperidol completely blocked the hyperactivity induced by the antidepressant drug (AD) + MK-801. Prazosin had an only weak antagonistic effect. Repeated treatment with AD increased the MK-801 locomotor hyperactivity to a greater extent than acute treatment. This effect was completely blocked by haloperidol and only partly by prazosin. The obtained results indicate that the dopamine system may be involved, at least in part, in the potentiating effect of the combined treatment with AD + MK-801.

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