Title : Involvement of glutamate neurotransmission and N-methyl-d-aspartate receptor in the activation of midbrain dopamine neurons by 5-HT1A receptor agonists: an electrophysiological study in the rat.

Pub. Date : 2008 Oct 28

PMID : 18801415






5 Functional Relationships(s)
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1 Systemic administration of selective 5-HT1A agonists, such as 8-hydroxy-2-(di-n-propylamino)-tetralin (8-OHDPAT), stimulates the electrical activity of ventral tegmental area (VTA) dopamine neurons by a mechanism which remains unknown. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine receptor 1A Rattus norvegicus
2 Systemic administration of selective 5-HT1A agonists, such as 8-hydroxy-2-(di-n-propylamino)-tetralin (8-OHDPAT), stimulates the electrical activity of ventral tegmental area (VTA) dopamine neurons by a mechanism which remains unknown. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine receptor 1A Rattus norvegicus
3 administration of the 5-HT1A agonist 8-OHDPAT induced a strong stimulation of burst and firing activity of dopamine neurons. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine receptor 1A Rattus norvegicus
4 Inactivation of the local 5-HT1A receptors by the microinfusion within the VTA of the selective 5-HT1A antagonist N-[2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl]-N-2-pyridinylcyclohexanecarboxamide maleate (WAY 100,635), or of pertussis toxin, reduced the ability of 8-OHDPAT to stimulate the firing of dopamine neurons but not their burst activity. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine receptor 1A Rattus norvegicus
5 On the other hand, burst activation elicited by 8-OHDPAT was strongly reduced following the inactivation of prefrontal 5-HT1A receptors achieved by the microinfusion of WAY 100,635 within the PFC. 8-Hydroxy-2-(di-n-propylamino)tetralin 5-hydroxytryptamine receptor 1A Rattus norvegicus