Abstract
In vivo microdialysis was used to assess the hypothesis that the stress- induced increase in dopamine release in the prefrontal cortex is mediated by stress-activated glutamate neurotransmission in this region. Local perfusion of an α-amino-3-hydroxy-5-methylisoxazole-4-propionate (AMPA)/kainate receptor antagonist, 6-cyano-7-nitroquinoxaline-2,3-dione, blocked the stress-induced increase in dopamine levels, whereas an NMDA receptor antagonist, 2-amino-5-phosphonopentanoic acid, at the dose tested, was not able to alter this response significantly. These data indicate that the effect of stress on dopamine release in the prefrontal cortex is mediated locally by activation of AMPA/kainate receptors, which modulate the release of dopamine in this region.
Original language | English (US) |
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Pages (from-to) | 785-788 |
Number of pages | 4 |
Journal | Journal of neurochemistry |
Volume | 63 |
Issue number | 2 |
State | Published - Aug 1994 |
Externally published | Yes |
Keywords
- Dopamine
- Excitatory amino acids
- Microdialysis
- Prefrontal cortex
- Stress
ASJC Scopus subject areas
- Biochemistry
- Cellular and Molecular Neuroscience