Fiche publication
Date publication
octobre 2008
Auteurs
Membres identifiés du Cancéropôle Est :
Pr BERNARD Alain
Tous les auteurs :
Bernard A, Rigault C, Mazue F, Le Borgne F, Demarquoy J
Lien Pubmed
Résumé
In mammals, during the aging process, an atrophy of the muscle fibers, an increase in body fat mass, and a decrease in skeletal muscle oxidative capacities occur. Compounds and activities that interact with lipid oxidative metabolism may be useful in limiting damages that occur in aging muscle. In this study, we evaluated the effect of L-carnitine and physical exercise on several parameters related to muscle physiology. We described that supplementing old rats with L-carnitine at 30 mg/kg body weight for 12 weeks (a) allowed the restoration of L-carnitine level in muscle cells, (b) restored muscle oxidative activity in the soleus, and (c) induced positive changes in body composition: a decrease in abdominal fat mass and an increase in muscle capabilities without any change in food intake. Moderate physical exercise was also effective in (a) limiting fat mass gain and (b) inducing an increase in the capacities of the soleus to oxidize fatty acids.
Référence
J Gerontol A Biol Sci Med Sci. 2008 Oct;63(10):1027-33.
