11C-SCH 39166, a selective ligand for visualization of dopamine-D1 receptor binding in the monkey brain using PET
- 1 February 1991
- journal article
- Published by Springer Nature in Psychopharmacology
- Vol. 103 (2) , 150-153
- https://doi.org/10.1007/bf02244195
Abstract
The new selective D1-dopamine receptor antagonist SCH 39166 was labelled with the positron emitting isotope11C and used as ligand for visualization of dopamine-D1 receptor binding in Cynomolgus monkeys by PET. After intravenous administration of the ligand a marked uptake of radioactivity was recorded in the D1-dopamine receptor-rich striatum and neocortex but not in the dopamine receptor-poor cerebellum. The uptake of radioactivity in striatum and neocortex was markedly displaced after the intravenous injection of a high dose of the D1-dopamine receptor antagonist SCH 23390 but not after the 5-HT2 receptor antagonist ketanserine.11C-SCH 39166 should be a useful tool to explore D1-dopamine receptor characteristics in the living human brain by PET.Keywords
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