Long-term effect of dexfenfluramine on amino acid profiles and food selection in obese patients during weight loss.

Bidragets oversatte titel: Long-term effect of dexfenfluramine on amino acid profiles and food selection in obese patients during weight loss.

L Breum, S E Møller, T Andersen, A Astrup

13 Citationer (Scopus)

Abstract

In depressive disorders an association between basal pre-treatment plasma ratios of tryptophan (Trp) and tyrosine (Tyr) to other large neutral amino acids (LNAA) and the clinical efficacy of serotonergic acting drugs have been established. In order to clarify whether a similar relation exists in obesity and to elucidate the long-term effect of dexfenfluramine (dF) on plasma amino acid profiles and macronutrient selection, we examined 29 obese patients participating in a 12 months double-blind weight loss trial with either dexfenfluramine (dF) (30 mg/day) or placebo (PL) in conjunction with 4.2-5.0 MJ/d diet. Maximum weight loss was obtained after 6 months (dF 12.8 +/- 5.4 kg; PL 13.8 +/- 9.2 kg, x +/- s.d., ns). Plasma Trp/LNAA and Tyr/LNAA were found to be lower than in normal weight controls and were further reduced during treatment (p < 0.05), but without differences between dF and PL groups. Macronutrient selection was not affected by the dF treatment. In the placebo group weight loss was associated with a high pre-treatment energy intake and a high carbohydrate-protein ratio (p < 0.05). A decrease in dietary fat and increase in protein intake (%) and age was found to explain 82% of the variation in weight loss (p < 0.0005), whereas no correlation could be shown in the dF group. Pre-treatment plasma Trp/LNAA or Tyr/LNAA and weight loss were not correlated. In conclusion, neither food selection nor basal plasma amino acid profiles were predictors of weight loss during long-term treatment with dF as an adjuvant to energy restriction, and they were not affected by the drug treatment.
Bidragets oversatte titelLong-term effect of dexfenfluramine on amino acid profiles and food selection in obese patients during weight loss.
OriginalsprogEngelsk
TidsskriftInternational Journal of Obesity
Vol/bind20
Udgave nummer2
Sider (fra-til)147-153
Antal sider7
ISSN0307-0565
StatusUdgivet - 1996

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