Abstract
Concentrations of endogenous norepinephrine, dopamine and epinephrine in cerebroventricular perfusates were used to evaluate the effects of drugs on the availability of extracellular catecholamines in the intact rat brain. Administration of the antidepressant drugs imipramine, desmethylimipramine or tranylcypromine resulted in marked increases of both norepinephrine and dopamine concentrations while epinephrine levels were not affected. Treatment with a similar dose of carbamazepine — an anticonvulsant drug with antidepressant activity — resulted in a significant increase in dopamine concentrations without apparent effect on either norepinephrine or epinephrine. It is suggested that at the applied dose, carbamazepine may act to modify the uptake, release or metabolism of dopamine in brain areas adjacent to the cerebroventricular space without affecting the other catecholamines.
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Kowalik, S., Levitt, M. & Barkai, A.I. Effects of carbamazepine and anti-depressant drugs on endogenous catecholamine levels in the cerebroventricular compartment of the rat. Psychopharmacology 83, 169–171 (1984). https://doi.org/10.1007/BF00429729
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DOI: https://doi.org/10.1007/BF00429729