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The function of dopamine D(3) receptors present in the striatum has remained elusive. In the present study evidence is provided for the existence of dopamine D(1)-D(3) receptor heteromers and for an intramembrane D(1)-D(3) receptor cross-talk in living cells and in the striatum. The formation of D(1)-D(3) receptor heteromers was demonstrated by fluorescence(More)
We have recently reported that two typical Gs-coupled receptors, the beta2-adrenergic receptor and the receptor for prostaglandin E1, stimulate phospholipase C-epsilon (PLC-epsilon) and increase intracellular Ca2+ concentration ([Ca2+]i) in HEK-293 cells and N1E-115 neuroblastoma cells, respectively, by a pathway involving Epac1, a cAMP-activated and(More)
A series of eight substituted N-(4-(4-(2-halogenophenyl)piperazin-1-yl)butyl)-3-phenylacryl amide derivatives have been synthesized and screened for binding affinities at dopamine hD(2) and hD(3) receptors. All compounds have shown high to remarkable receptor affinities and some have led to distinct selectivity for D(3) receptors. Highest D(3)-receptor(More)
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