GBR-12909 effect on dopamine outflow depends on phosphorylation in the caudate nucleus of the rat

作者: A. Thümen , F. Qadri , R. Sarkar , A. Moser

DOI: 10.1002/SYN.10124

关键词:

摘要: Modulation of the dopamine (DA) transporter inhibitor GBR-12909 effect on DA release by protein kinases and phosphatases was studied in slices rat caudate nucleus measuring outflow superfusate static chambers. Activation kinase A C markedly enhanced GBR-12909, whereas inhibition H7 reduced effect. Inhibition (PPP) 1 2A okadaic acid did not modify basal DA. However, after addition a dramatic biphasic found when GBR-12909. PPP extracellular levels, while completely abolished In contrast to tetrodotoxin, voltage-activated calcium channel blocker ω-conotoxin MVIIC inhibited effects outflow. Additionally, aCSF devoid increase liberation. These results suggest complex strong influence phosphorylation channel-dependent at low-affinity piperazine binding sites vitro. Synapse 46:72–78, 2002. © 2002 Wiley-Liss, Inc.

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