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  • Title: 1S,3R-ACPD has cataleptogenic effects and reverses MK-801-, and less pronounced, D,L-amphetamine-induced locomotion.
    Author: Kronthaler UO, Schmidt WJ.
    Journal: Eur J Pharmacol; 1996 Dec 05; 316(2-3):129-36. PubMed ID: 8982678.
    Abstract:
    The purpose of this study was to examine the motor effects of (1S,3R)-1-amino-cyclopentane-1,3-dicarboxylic acid (1S,3R-ACPD), an agonist at metabotropic glutamate receptors, its interaction with dizocilpine (MK-801), a NMDA receptor antagonist, and with D,L-amphetamine, an indirect dopamine receptor agonist. 1S,3R-ACPD (20, 30, 40, 80 micrograms) evoked prominent locomotor and exploratory deficits in an open-field hole-board test and a moderate akinesia and rigidity in a catalepsy test (30, 40, 80 micrograms). MK-801 (0.08, 0.16, 0.32 mg/kg i.p.) as well as D,L-amphetamine (1.0, 2.0, 3.0 mg/kg i.p.) potently reversed 1S,3R-ACPD-induced (80 micrograms) catalepsy. MK-801 and D,L-amphetamine, administered alone, induced motor stimulation. 1S,3R-ACPD (80 micrograms) reversed the effects of the two lower doses of MK-801. 1S,3R-ACPD reversed D,L-amphetamine-induced motor stimulation to a minor extent than that of MK-801. Thus motor deficits induced by 1S,3R-ACPD were reversed by both, NMDA receptor blockade and dopamine receptor activation. 1S,3R-ACPD reversed motor stimulation, induced by NMDA receptor blockade and, however less pronounced, that by dopamine receptor activation.
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