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Results for “Dexfenfluramine”

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PubMed1992

Progress report on the anorectic effects of dexfenfluramine, fluoxetine and sertraline.

This progress report on the anorectic effect of serotoninergic indirect antagonists compares the action of D-fenfluramine, fluoxetine and sertraline and their N-dealkylated metabolites. Brain levels of drugs and their metabolites were measured after equi-active anorectic doses. Fluoxetine and sertraline inhibit 5-HT uptake in vitro with a potency which is at least one order of magnitude higher than for D-fenfluramine while all three drugs release 5-HT from synaptosomes and the active concentrations are closer to the brain concentrations reached after anorectic doses. However, a number of differences have been observed between D-fenfluramine and fluoxetine regarding the mechanisms of 5-HT release. Furthermore fluoxetine affected storage of 5-HT in vesicles much more than D-fenfluramine did. The anorectic effect induced by fluoxetine was not antagonized by antiserotoninergic drugs. No evidence of an involvement of CCK in the anorectic effect of D-fenfluramine was found when food intake was determined in rats previously submitted to food deprivation.

1-Naphthylamine↗
PubMed1992

Thermogenesis, brown adipose tissue and dexfenfluramine in animal studies.

D-Fenfluramine is a potent stimulator of thermogenesis in the rat, an action which may contribute to its effects on body weight. The actions of D-fenfluramine appear to control release of endogenous 5-HT which subsequently induces release of eicosanoids and corticotrophin-releasing factor. Peripheral heat production results mainly from sympathetic activation of thermogenesis.

Adipose Tissue, Brown↗
PubMed1991

Dexfenfluramine.

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Fenfluramine↗
PubMed1990

[Clinical observations on the treatment of obese patients with dexfenfluramine].

In a 12-months double-blind study 42 obese patients (5 males, 37 females) were treated either with d-fenfluramine (30 mg daily) or with placebo plus low-calorie diet (1500-1200 kcal daily). Evaluation of treatment efficacy was based on evolution of the initial cohort, weight loss, number of subjects completing treatment, tolerability and events leading to dropout. Patients receiving d-fenfluramine had statistically significant greater weight loss than the placebo group; 30 mg daily proved to be an effective and well tolerated dose of d-fenfluramine with the best long-term activity/acceptability ratio.

Adult↗