Cited by 23Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchSchizophrenia research and treatment

Effects of AMPA/kainate receptor blockade on responses to dopamine receptor agonists in the core and shell of the rat nucleus accumbens

Choi, K. H., Zarandi, B., Todd, K. G., Biondo, A. M., Greenshaw, A. J.·2000·Psychopharmacology

Abstract

The present experiments were conducted to investigate effects of alpha-amino-3-hydroxy-5-methyl-4-isoxazoleprionic acid (AMPA)/kainate receptor blockade (CNQX, NBQX) on locomotor responses to D2/3 (7-OH-DPAT) and D1 [(+)-SKF 38393] dopamine receptor agonists in the nucleus accumbens (NAS) core and shell. CNQX (0.25-0.5 microgram) microinjected into the NAS core or shell did not affect baseline locomotor activity. 7-OH-DPAT (2.5-5 micrograms) decreased locomotor activity. Co-administration of CNQX (0.5 microgram) increased the effects of 7-OH-DPAT (5 micrograms) in the NAS core and shell. A similar increase was observed with NBQX (0.5 microgram) in the NAS shell. (+)-SKF 38393 (5 micrograms) into the NAS core and shell increased locomotor activity after 30 min; this effect was not altered by CNQX (0.5 microgram). As the D2/3 dopamine agonist (-)-quinpirole (2 micrograms) increased effects of (+)-SKF 38393 (5 micrograms) in NAS shell but not core, lack of site-selective effects of (+)-SKF-38393 and of 7-OH-DPAT within NAS is not attributable to drug diffusion. The previous observation that glutamate effects on locomotor activity depend on the relative involvement of D1 or D2/3 dopamine receptors in the NAS was based on the dopamine-depletion model. The present results demonstrate differential interactions of AMPA receptor blockade with dopamine agonists in "dopamine-intact" animals.

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Crossref · 10.1007/s002130000391

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Authors
Choi, K. H., Zarandi, B., Todd, K. G., Biondo, A. M., & Greenshaw, A. J.
Affiliations
University of Alberta (CA)
Venue
Psychopharmacology
Published
2000-05-24
Volume
150
Issue
1
Pages
102-111
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W1966297450
Cited by
23
References
40
Citations by year
2022: 1 · 2012: 2
FWCI
0.65
Type
journal article
Language
en
Open access
closed
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
CNQX, NBQX, nucleus accumbens, dopamine agonists, dopamine D1 receptor, 7-OH-DPAT, SKF 38393, quinpirole, locomotor activity, dopamine-glutamate interaction
MeSH terms
Animals, Male, Motor Activity, Nucleus Accumbens, Tetrahydronaphthalenes, Rats, Sprague-Dawley, Receptors, AMPA, Kainic Acid Receptors, Dopamine Agonists, Excitatory Amino Acid Antagonists, 6-Cyano-7-nitroquinoxaline-2,3-dione, Rats

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