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Differential interaction of competitive NMDA and AMPA antagonists with selective dopamine D-1 and D-2 agonists in a rat model of Parkinson's disease.
Löschmann, Peter-Andreas; Wüllner, Ullrich; HENEKA, Michael et al.
1997In Synapse, 26 (4), p. 381 - 391
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Keywords :
Dopamine Agonists; Excitatory Amino Acid Antagonists; Quinoxalines; Receptors, AMPA; Receptors, Dopamine D1; Receptors, Dopamine D2; Receptors, N-Methyl-D-Aspartate; 2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline; Oxidopamine; 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine; Apomorphine; Animals; Apomorphine/pharmacology; Dopamine Agonists/pharmacology; Drug Interactions; Excitatory Amino Acid Antagonists/pharmacology; Male; Parkinson Disease, Secondary/chemically induced; Parkinson Disease, Secondary/physiopathology; Quinoxalines/pharmacology; Rats; Rats, Wistar; Receptors, AMPA/antagonists & inhibitors; Receptors, Dopamine D1/agonists; Receptors, Dopamine D2/agonists; Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors; Rotation; Stereotyped Behavior/drug effects; 1R,3S)-1- aminomethyl-5,6-dihydroxy-3-phenylisochroman; 2,3- dihydroxy-6-nitro-7-sulfamoyl-benzolfiquinoxaline; 3-((±)-2- carboxypiperazin-4-yl)-propyl-1-phosphonic acid; 6-OHDA lesion; A 68930; AMPA antagonist; CPP; Dopamine agonist; Experimental models; Lisuride; NBQX; NMDA antagonist; Parkinson's disease; Quinpirol; Substantia nigra; Cellular and Molecular Neuroscience; A68930; (1R,3S)-1-aminomethyl-5,6-dihydroxy-3-phenylisochroman; 3-((+/-)-2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid; 2,3-dihydroxy-6-nitro-7-sulfamoyl-benzo[f]quinoxaline
Abstract :
[en] Stimulation of the dopamine (DA) D-2 and D-1 receptors results in behavioural activation (i.e., induction of contralateral rotations) in 6-hydroxydopamine (6-OHDA) substantia nigra lesioned rats. Competitive N-methyl-D-aspartate (NMDA) antagonists as well as alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA) antagonists potentiate the stimulatory responses to threshold doses of L-DOPA or the mixed dopamine D-1/D-2 agonist apomorphine in this model, indicating the potential of such combinations for the management of Parkinson's disease. Neuroanatomic and electrophysiologic data indicate a differential distribution of DA D-1 and DA D-2 receptors within motor loops of the basal ganglia. DA D-1 receptors are preferentially located on GABAergic neurones projecting to the substantia nigra compacta (SNc) and to the substantia nigra reticulata (SNr), whereas DA D-2 receptors are preferentially located on neurones that innervate the external pallidum. NMDA receptors are present in high densities within the striatum, whereas AMPA receptors are enriched in the entopeduncular nucleus/internal pallidum and the SNr. To further characterise the functional interaction between DA and glutamate receptors, we tested the competitive NMDA antagonist 3-((+/-)-2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid (CPP) and the AMPA antagonist 2,3-dihydroxy-6-nitro-7-sulfamoyl-benzo[f] quinoxaline (NBQX) following systemic administration in combination with the DA D-2 selective agonist quinpirole or the DAD-1 selective agonist A 68 930 (1R,3S)-1-aminomethyl-5,6-dihydroxy-3-phenylisochroman) in rats with chronic 6-OHDA lesions of the SNc. CPP potentiated quinpirole-induced rotations and did not affect those induced by the D-1 agonist A 68930. By contrast, NBQX had no effect on quinpirole-induced rotations, whereas synergism was seen with A 68930. These results suggest that rotations induced by combined treatment with glutamate antagonists and DA agonists are mediated by different pathways within the basal ganglia, depending on which subtype of receptor is involved. AMPA antagonists could act preferentially by activating the direct motor pathway, whereas NMDA antagonists could modulate the indirect loop.
Disciplines :
Neurology
Author, co-author :
Löschmann, Peter-Andreas;  Department of Neurology, Eberhard-Karls-University Tübingen, Federal Republic of Germany
Wüllner, Ullrich;  Department of Neurology, Eberhard-Karls-Univ. Tübingen, Tübingen, Germany
HENEKA, Michael  ;  Department of Neurology, Eberhard-Karls-Univ. Tübingen, Tübingen, Germany
Schulz, Jörg B.;  Department of Neurology, Eberhard-Karls-Univ. Tübingen, Tübingen, Germany
Kunow, Margrit;  Research Laboratories of Schering AG, Berlin, Germany
Wachtel, Helmut;  Research Laboratories of Schering AG, Berlin, Germany
Klockgether, Thomas;  Department of Neurology, Eberhard-Karls-Univ. Tübingen, Tübingen, Germany
External co-authors :
yes
Language :
English
Title :
Differential interaction of competitive NMDA and AMPA antagonists with selective dopamine D-1 and D-2 agonists in a rat model of Parkinson's disease.
Publication date :
August 1997
Journal title :
Synapse
ISSN :
0887-4476
eISSN :
1098-2396
Volume :
26
Issue :
4
Pages :
381 - 391
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 27 May 2024

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