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Updated: Oct 9, 2026

A Plate-Based Assay for the Measurement of Endogenous Monoamine Release in Acute Brain Slices
Published on: August 11, 2021
Modafinil does not affect serotonin efflux from rat frontal cortex synaptosomes: comparison with known serotonergic
L Ferraro1, S Tanganelli, K Fuxe
1Department of Clinical and Experimental Medicine, Section of Pharmacology, University of Ferrara, Ferrara, Italy.
Abstract:
Modafinil did not affect spontaneous and K(+)-evoked [3H]5-HT efflux from cortical synaptosomes while it increased K(+)-evoked tritium efflux from cortical slices, an action that became stronger in the presence of paroxetine. In contrast, DL-fenfluramine and fluoxetine were able to enhance spontaneous and/or K(+)-evoked tritium efflux from synaptosomes and slices. These results suggest that modafinil does not affect 5-HT transmission from cortical synaptosomes and that its 5-HT releasing action is different from that of DL-fenfluramine and fluoxetine.
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