Differential effects of the novel antidepressant tianeptine on L-5-hydroxytryptophan (5-HTP)-elicited corticosterone release and body weight loss
by
Broqua P, Baudrie V, Chaouloff F.
Laboratoire de Pharmacologie,
Groupe de Neuropharmacologie, CNRS,
CHU Necker-EM, Paris, France.
Eur Neuropsychopharmacol. 1992 Jun;2(2):115-20.


ABSTRACT

Biochemical and behavioural experiments have indicated that the novel antidepressant tianeptine stimulates 5-hydroxytryptamine (5-HT) reuptake. The present study has explored the influence of acute tianeptine pretreatment upon corticosterone release and body weight loss following L-5-hydroxytryptophan (5-HTP) administration in conscious rats. Administration of 5-HTP (20 mg/kg i.v.) increased plasma corticosterone levels to a similar extent in rats pretreated either with saline or tianeptine (10 mg/kg i.p., 60 min beforehand). Besides, prior administration of benserazide (50 mg/kg i.p., 30 min beforehand), an inhibitor of peripheral aromatic L-amino acid decarboxylase, prevented 5-HTP-induced corticosterone release in both saline- and tianeptine-pretreated rats. However, combined administration of benserazide and 5-HTP decreased overnight body weight in saline-, but not in tianeptine-pretreated rats. These results suggest that tianeptine preferentially activates 5-HT reuptake in central serotonergic neurones.
Metabolism
Long-term use
Neuroplasticity
Pharmacodynamics
Serotonin/forebrain
Tianeptine (Stablon)
Tianeptine: structure
Melancholic depression
Stress, memory and depression
Tianeptine for anxious depressives
Electrophysiological effects of tianeptine
Tianeptine (Stablon) versus fluoxetine (Prozac)
Antidepressant comparisons: SSRIs v tianeptine
Tianeptine (Stablon) v paroxetine (Paxil, Seroxat)


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