PubMed · 1319944
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C A Miller. Antidepressant update.. https://doi.org/10.1016/s0197-4572(07)81031-7
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Sertraline, a potent and selective serotonin uptake inhibitor, was used to analyze the changes occurring in the serotonin system after uptake inhibition in vivo. Sertraline (11 mg/kg) lowered extracellular 5-hydroxyindolacetic acid (5-HIAA), measured in rat hippocampus by in vivo voltammetry, for about 3 h. The interaction between sertraline and drugs known to interfere with the release or uptake of serotonin (L-5-hydroxytryptophan (5-HTP), d-norfenfluramine and tianeptine) was then studied. The sertraline-induced decrease in extracellular 5-HIAA was related to the inhibition of uptake.
The present study investigates the in vivo effects of the serotonin uptake enhancer tianeptine. The serotonin metabolite, 5-hydroxy-indolacetic acid (5-HIAA) was measured by in vivo voltammetry and carbon fiber electrodes chronically implanted in different brain areas of freely moving rats. Tianeptine (10 mg/kg i.p.) increased extracellular 5-HIAA in the hippocampus and hypothalamus. The interaction between tianeptine and drugs known to interfere with the uptake or release of serotonin (sertraline, buspirone, D-norfenfluramine) was then studied and, to ascertain the in vivo pharmacological relevance of tianeptine's effects, its ability to reduce the serotoninergic syndrome was evaluated. Both the biochemical and behavioral data indicate that in vivo tianeptine's effects on the serotoninergic system are likely to be due to serotonin uptake enhancement.