Section 40
Chapter 39,864

Dopamine agonists potentiate antiakinetic effects of competitive NMDA-antagonists in monoamine-depleted mice

Kannari, K.; Markstein, R.

Journal of Neural Transmission. General Section 84(3): 211-220


PMID: 1679337
DOI: 10.1007/bf01244971
Accession: 039863269

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The competitive NMDA-antagonists SDZ EAA-494 and CGP 37849 and the mixed D-1/D-2 dopamine agonists CI 201-678 and SDZ 205-152 reverse akinesia in monoamine-depleted mice in a dose dependent manner. Combination of threshold doses of NMDA-antagonists with dopamine agonists markedly enhances anti-akinetic effects. CI 201-678 which in addition to D-1 and D-2 receptors stimulates alpha-2 receptors produces a stronger effect than SDZ 205-152 which is devoid of alpha-2 agonist activity. The results indicate that concomitant blockade of NMDA-receptors and activation of dopamine receptors results in synergistic or at least additive motor stimulatory effects.

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