Caloric restriction or resveratrol supplementation and ageing in a non-human primate: first-year outcome of the RESTRIKAL study in Microcebus murinus.
A life-long follow-up of physiological and behavioural functions was initiated in 38-month-old mouse lemurs (Microcebus murinus) to test whether caloric restriction (CR) or a potential mimetic compound, resveratrol (RSV), can delay the ageing process and the onset of age-related diseases. Based on their potential survival of 12 years, mouse lemurs were assigned to three different groups: a control (CTL) group fed ad libitum, a CR group fed 70% of the CTL caloric intake and a RSV group (200 mg/kg.day(-1)) fed ad libitum. Since this prosimian primate exhibits a marked annual rhythm in body mass gain during winter, animals were tested throughout the year to assess body composition, daily energy expenditure (DEE), resting metabolic rate (RMR), physical activity and hormonal levels. After 1 year, all mouse lemurs seemed in good health. CR animals showed a significantly decreased body mass compared with the other groups during long day period only. CR or RSV treatments did not affect body composition. CR induced a decrease in DEE without changes in RMR, whereas RSV induced a concomitant increase in DEE and RMR without any obvious modification of locomotor activity in both groups. Hormonal levels remained similar in each group. In summary, after 1 year of treatment CR and RSV induced differential metabolic responses but animals successfully acclimated to their imposed diets. The RESTRIKAL study can now be safely undertaken on a long-term basis to determine whether age-associated alterations in mouse lemurs are delayed with CR and if RSV can mimic these effects.
Mécanismes Adaptatifs et Evolution, UMR 7179 Centre National de la Recherche Scientifique, Muséum National d'Histoire Naturelle, 1 avenue du petit château, Brunoy, France.
Alexandre
A
Dal-Pan
Jérémy
J
Terrien
Fabien
F
Pifferi
Roger
R
Botalla
Isabelle
I
Hardy
Julia
J
Marchal
Alexandre
A
Zahariev
Isabelle
I
Chery
Philippe
P
Zizzari
Martine
M
Perret
Jean Luc
JL
Picq
Jacques
J
Epelbaum
Stéphane
S
Blanc
Fabienne
F
Aujard
D000375:Aging / Q000187:drug effects* / Q000502:physiology*; D000818:Animals; D000975:Antioxidants / Q000008:administration & dosage*; D031204:Caloric Restriction; D016565:Cheirogaleidae; D008297:Male; D000077185:Resveratrol; D013267:Stilbenes / Q000008:administration & dosage*
D000975:Antioxidants; D013267:Stilbenes; D000077185:Resveratrol