Abstract
The present study provides further evidence for transient D1 autoreceptor-like synthesis modulation in prefrontal cortex, but not striatum, of developing rats. DOPA accumulation was attenuated in a concentration-dependent manner in slices from the prefrontal cortex and striatum at 15 days of age by the partial D1 agonist SKF 38393 (0.01–10 μM) and the full D1 agonist SKF-81297 (0.01–10 μM) following NSD-1015; the response was no longer apparent by 40 days. Both agonists had greater potency in prefrontal cortex than striatum, and SKF-81297 exerted greater maximal inhibitory effects than SKF-38393. The inhibitory effects of both agonists were antagonized by pre-incubation with the D1 antagonist SCH-23390 in cortex, but not in striatum.
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