Abstract
Resveratrol (RSV) is a dietary polyphenolic compound with several positive effects on metabolic functions and longevity. We tested the effect of RSV on the circadian clock in a nonhuman primate, the gray mouse lemur. The impact of a 2-week dietary supplementation of RSV on the rhythms of locomotor activity and body temperature in constant dark conditions (DD) was investigated in young (n = 7) and old (n = 6) animals. RSV supplementation followed 2 weeks in DD under normal diet (CTL). In both young and old animals receiving RSV, we observed a shortening of the free-running period compared to those under CTL (-15 minutes in young animals and -45 minutes in old animals), accompanied by a lower mean body temperature in both age groups and decreased locomotor activity in young animals. Thus, RSV is a food component capable of influencing a primate's circadian clock. This property may be of interest clinically in the context of the treatment of circadian disruption and in the context of the effects of RSV ingestion on health.
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