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  • Title: Endogenous dopamine differently affects N-[1-(2-benzo(b)thiophenyl)cyclohexyl]piperidine and cocaine binding to the dopamine uptake complex.
    Author: Maurice T, Barbanel G, Vignon J.
    Journal: Gen Pharmacol; 1993 Jan; 24(1):191-4. PubMed ID: 8482495.
    Abstract:
    1. [3H]N-[1-(2-Benzo(b)thiophenyl)cyclohexyl]piperidine ([3H]BTCP) labels in vivo the dopamine uptake complex in the mouse striatum. 2. In mice treated with gamma-butyrolactone (GBL, 400 mg/kg), [3H]BTCP specific binding was increased and ID50 values of BTCP and cocaine for the prevention of [3H]BTCP binding were significantly lowered. 3. In GBL-treated mice, cocaine (5 mg/kg, s.c.) had no effect on the BTCP ID50 value, whereas GBR 12783 (2 mg/kg, s.c.) increased it significantly. 4. Thus in vivo, endogenous dopamine and cocaine are competitive and non-competitive inhibitors, respectively, of the binding of [3H]BTCP.
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