Table 1.

Psychostimulant-induced rGβ1 mRNA changes in different brain regions

DrugsStriatum + accumbensPrefrontal cortexThalamus + hypothalamusHippocampus
Cocaine (50 mg/kg, i.p.)246  ± 48 (n = 9)145  ± 45 (n = 6)96  ± 30 (n = 6)108  ± 47 (n = 6)
d-Amphetamine (7.5 mg/kg, i.p.)218  ± 63 (n = 9)72  ± 31 (n = 6)81  ± 26 (n = 6)337  ± 79 (n = 5)
  • Values represent mean percentage of control ± SEM; rGβ1 mRNA levels were normalized to levels of expression of β-actin.