| Assay Method Information | |
| | Receptor Binding Assay |
| Description: | Dopamine D2: The binding assay was performed using 40 μl of the membrane specimen, 20 μl of [3H]-raclopride (final concentration 1 to 2 nM), 20 μl of a test drug and 50 mM Tris-hydrochloric acid buffer (containing 120 mM NaCl, 5 mM KCl, 2 mM CaCl2, 1 mM MgCl2, pH 7.4) so that the total amount was 200 μl (final dimethylsulfoxide concentration 1%). The reaction was performed at room temperature for 1 hour and terminated by conducting suction filtration with a cell harvester on a glass fiber filter plate. The filter plate made of glass fiber was washed with 50 mM Tris-hydrochloric acid buffer (pH 7.4), and after dried, a microplate liquid scintillation cocktail was added and the radioactivity was measured with a microplate scintillation counter. Radioactivity in the presence of 10 μM (+)-butaclamol hydrochloride was assumed as nonspecific binding. |
| Affinity data for this assay | |
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