Difference in the effects of the antidepressant tianeptine on dopaminergic metabolism in the prefrontal cortex and the nucleus accumbens of the rat. A voltammetric study

Add time:09/08/2019    Source:sciencedirect.com

The effects of the new tricyclic antidepressant tianeptine were investigated on dopaminergic (DAergic) metabolism in the anteromedian prefrontal cortex and the nucleus accumbens of the rat. DAergic metabolism was assessed by the measurement of DOPAC, the main presynaptic metabolite of dopamine, using in vivo voltammetry in rats ventilated with halothane (0.5–0.75% in air). Acute treatment with tianeptine (10 mg/kg, 20 mg/kg) only increased significantly DOPAC levels in the anteromedian prefrontial cortex. After chronic treatment with tianeptine (15 days, 2 times/day) the increases in DOPAC levels i n this structure were altered and less pronounced with the 20 mg/kg dose. Previous studies led to suggest that both acute and chronic effects on DAergic terminals in the anteromedian prefrontal cortex may be involved in the therapeutic action of this new antidepressant.

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