Lipolytic effect of a polyphenolic citrus dry extract of red orange, grapefruit, orange (Sinetrol) in human body fat adipocytes. Mechanism of action by inhibition of cAMP-Phosphodiesterase (PDE)

Phytomedicine, 15(10):783-92


FYTEXIA-NB Consulting Group, ZAC de Mercorent, 280 rue Nicolas Joseph Cugnot, 34500 Beziers, France.
102 Rue René Coty, 76600 Le Havre, France.
alternatives, Gençay, France.


The present study investigated the lipolytic (break of fat stored) effect of a citrus-based polyphenolic dietary supplement (SINETROL) at human adipocytes (ex vivo), body fat (clinical) and biochemical levels (inhibition of phosphodiesterase). Free fatty acids (FFA) release was used as indicator of human adipocyte lipolysis and SINETROL activity has been compared with known lipolytic products (isoproterenol, theopylline and caffeine). SINETROL stimulated significantly the lipolytic activity in a range of 6 fold greater than the control. Moreover, SINETROL has 2.1 greater activity than guarana 12% caffeine while its content in caffeine is 3 times lower. Clinically, two groups of 10 volunteers with BMI relevant of overweight were compared during 4 and 12 weeks with 1.4 g/day SINETROL and placebo supplementation. In the SINETROL Group the body fat (%) decreased with a significant difference of 5.53% and 15.6% after 4 and 12 weeks, respectively, while the body weight (kg) decreased with a significant difference of 2.2 and 5.2 kg after 4 and 12 weeks, respectively.
These observed effects are linked to SINETROL polyphenolic composition and its resulting synergistic activity. SINETROL is a potent inhibitor of cAMP-phosphodiesterase (PDE) (97%) compared to other purified compounds (cyanidin-3 glycoside, narangin, caffeine).
These results suggest that SINETROL has a strong lipolytic effect mediated by cAMP-PDE inhibition. SINETROL may serve to prevent obesity by decreasing BMI.

© 2008 Elsevier Gmbh.

KEYWORDS: Lipolysis; Citrus; Adipocytes; Phosphodiesterase; Body fat; Free fatty acids (FFA)

Check out Bioalternatives’ updates and experience new testing ideas

  • Bioassays, models and services
  • Posts and publications
  • Events

Related Posts or publications

New Biological Activities of Lythrum salicaria L. The perennial and widespread herb Lythrum salicaria L., also called purple loosestrife, is a plant that is traditionally used in European medicine.
Effects of different kinds of pollutants on the lipidic metabolism of human sebocytes and protective effects of a new macroalgae culture extract Sebocytes lipid production are stimulated by pollutants. Ame acts by protecting epidermal cells, human sebocytes and skin from urban dust.
Acné vulgaris : Physiopathologie et mécanismes cellulaires L’acné vulgaris est une pathologie inflammatoire chronique cutanée localisée au niveau du follicule pilo-sébacé. Elle apparaît suite à une surproduction de sébum liée à des dysfonctionnements d’origine hormonale (androgène), environnementale (polluti...
La glande sébacée : Physiologie et fonctions La glande sébacée est un organe localisé au niveau du derme. Elle est responsable de la synthèse et de la sécrétion du sébum qui entre dans la composition du film hydrolipidique. Le rôle du sébum est de protéger la peau des agressions extérieures et ...
Le cheveu: follicule, structures associées et croissance Le follicule pileux est une annexe de la peau qui a la capacité de se renouveler de manière parfaitement autonome, cyclique et asynchrone. L'analyse histologique de l'unité pilo-sébacée révèle une organisation en deux compartiments: le compartiment d...