Article date: 1992/8/17
PubMed ID: 1280793
Journal name: Neuroscience letters (ISSN: 0304-3940)
Degeneration of dopaminergic nigrostriatal neurons in primate models of Parkinson's disease (PD) leads to an overactivity of excitatory glutamatergic projections from the subthalamic nucleus (STN) to the output nuclei of the basal ganglia resulting in rigidity and akinesia. The selective alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA) antagonist 6-nitro-sulfamoyl-benzo-quinoxaline-dione (NBQX) and the competitive N-methyl-D-aspartate (NMDA) antagonist 3-carboxy-piperazin-propyl phosphonic acid (CPP) ameliorate parkinsonian symptomatology when co-administered with threshold doses of L-DOPA in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated common marmosets and induce rotations in rats with unilateral 6-hydroxydopamine (6-OHDA) lesions of the substantia nigra (SN). Here we report that in the 6-OHDA-lesioned rat NBQX and CPP induce contralateral rotations when combined with threshold doses of the direct dopamine agonists lisuride or apomorphine. AMPA antagonists and competitive NMDA antagonists may therefore be suitable as adjuvants for the treatment of PD.
Author List: Wachtel H, Kunow M, Löschmann P A
Publication Types: Journal Article
Substances mentioned in the article: Dopamine Agents; Piperazines; Quinoxalines; Receptors, N-Methyl-D-Aspartate; 2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline; Ibotenic Acid; alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid; Oxidopamine; 3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid; Amphetamine; Lisuride; Apomorphine;
Mesh terms: Amphetamine/pharmacology; Animals; Apomorphine/pharmacology; Dopamine Agents/pharmacology; Drug Synergism; Ibotenic Acid/analogs & derivatives; Lisuride/pharmacology; Male; Neurons/drug effects; Oxidopamine; Parkinson Disease, Secondary/chemically induced; Piperazines/pharmacology; Quinoxalines/pharmacology; Rats; Rats, Wistar; Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors; Stereotyped Behavior/drug effects; Substantia Nigra/physiology; Sympathectomy, Chemical; alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid;