Abstract：
:Histamine H3 receptors (H3Rs) co-localize with dopamine (DA) D1 receptors (D1Rs) on striatal medium spiny neurons and functionally antagonize D1R-mediated responses. The intra-striatal administration of D1R agonists reduces DA release whereas D1R antagonists have the opposite effect. In this work, a microdialysis method was used to study the effect of co-activating D1 and H3 receptors on the release of DA from the rat dorsal striatum. Infusion of the D1R agonist SKF-38393 (0.5 and 1 μM) significantly reduced DA release (26-58%), and this effect was prevented by co-administration of the H3R agonist immepip (10 μM). In turn, the effect of immepip was blocked by the H3R antagonist thioperamide (10 μM). Our results indicate that co-stimulation of post-synaptic D1 and H3 receptors may indirectly regulate basal DA release in the rat striatum and provide in vivo evidence for a functional interaction between D1 and H3 receptors in the basal ganglia.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Alfaro-Rodriguez A,Alonso-Spilsbury M,Arch-Tirado E,Gonzalez-Pina R,Arias-Montaño JA,Bueno-Nava Adoi
10.1016/j.neulet.2013.07.026subject
Has Abstractpub_date
2013-09-27 00:00:00pages
5-9eissn
0304-3940issn
1872-7972pii
S0304-3940(13)00672-1journal_volume
552pub_type
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