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  • Title: CGP 4718 A, a new potential antidepressant with a dual mode of action.
    Author: Waldmeier PC, Tipton KF, Bernasconi R, Felner AE, Baumann PA, Maitre L.
    Journal: Eur J Pharmacol; 1984 Dec 15; 107(1):79-89. PubMed ID: 6526072.
    Abstract:
    CGP 4718 A (4-[5-chloro-benzofuranyl-2-]-1-methylpiperidine HCl) was found to inhibit MAO A preferentially in vitro in a competitive manner. Assessment of its in vivo effects by an ex vivo approach showed it to be a relatively weak, reversible inhibitor of MAO A. There were also effects on MAO B but they were inferior by a factor of about 10. The onset of the inhibitory effects in rat liver and brain was rapid, being maximal in about 1 h following administration of CGP 4718 A p.o. The inhibition was of relatively short duration with the effects being undetectable 24 h after treatment. CGP 4718 A also inhibited the reuptake of serotonin (5-HT) in synaptosomes in vitro and ex vivo. Evidence for 5-HT uptake inhibition was also found by using the H 75/12 depletor model. Its in vitro and in vivo potency as a 5-HT uptake inhibitor was approximately the same as that of imipramine. The effects on MAO A and on 5-HT uptake occurred over a similar dose range (above 10 mg/kg p.o.) and also had a similar time course. No evidence for inhibitory effects on noradrenaline uptake was found in vivo.
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