Table 1. The estimates of functional parameters (agonist potency and intrinsic activity) for D1 and standard compounds in a [35S]GTPγS binding assay.
Compounds | Agonist potency (pEC50 ± SEM) | Intrinsic activity (Emax ± SEM in %) |
---|---|---|
(+) 8-OH-DPAT | 6.8 ± 0.2 | 94.0 ± 2.0 |
Buspirone | 6.6 ± 0.3 | 33.0 ± 1.0 |
D1 | 6.1 ± 0.1 | 26.0 ± 2.0 |
WAY | 0 | 0 |
The values of pEC50 (negative logarithm of the concentration of agonist required to elicit a response halfway between the baseline and maximum responses) and Emax, (maximal drug effect on [35S]GTPγS binding baseline expressed as a percentage of that produced by 10 μM (+)8-OH-DPAT) were estimated using nonlinear regression analysis.