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  • Title: The effect of EGYT-475 (Trelibet) and its metabolites on the potassium-stimulated 3H-noradrenaline release from cortical slices of rat brain.
    Author: Szücks Z, Szentendrei T, Fekete MI.
    Journal: Pol J Pharmacol Pharm; 1987; 39(2):185-93. PubMed ID: 3432167.
    Abstract:
    The effect of a new antidepressant drug: EGYT-475 (Trelibet) and its metabolites: EGYT-1354 and EGYT-2760 on the K+-stimulated overflow of 3H-noradrenaline from rat brain cortical slices was studied. The parent compound and EGYT-1354 were ineffective at a concentration of 10(-4) mole/l but EGYT-2760 increased both the spontaneous and the potassium-evoked tritium release in the concentration range of 10(-8)-10(-5) mole/l. The increasing effect of EGYT-2760 on the basal tritium outflow was similar to that of D-amphetamine: it could be prevented by neuronal uptake inhibitors (cocaine and desipramine) and did not depend on the extracellular Ca++ concentration. EGYT-2760 and D-amphetamine enhanced the K+-induced 3H-noradrenaline overflow too, however this effect of D-amphetamine was abolished in the presence of cocaine and desipramine, while the effect of EGYT-2760 remained unaffected. EGYT-2760 did not possess presynaptic alpha 2-adrenoceptor antagonist property: it could not antagonize the inhibitory effect of clonidine.
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