Serum concentrations and gene expression of sirtuin 1 in healthy and slightly overweight subjects after caloric restriction or resveratrol supplementation: A randomized trial

Abstract Background Sirtuin 1 (Sirt1) plays an important role in vascular biology, and influences aspects of age-dependent atherosclerosis. In animals, the sirtuin system is strongly influenced by resveratrol and caloric restriction, but its expression in humans is controversial. This study investig...

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Published in:International journal of cardiology 2017-01, Vol.227, p.788-794
Main Authors: Mansur, Antonio P, Roggerio, Alessandra, Goes, Marisa F.S, Avakian, Solange D, Leal, Dalila P, Maranhão, Raul C, Strunz, Célia M.C
Format: Article
Language:English
Subjects:
Biomarkers - blood
Caloric Restriction
Cardiovascular
Female
Gene expression
Gene Expression Regulation - drug effects
Human population
Humans
Lipids - blood
Male
Middle Aged
Overweight - diet therapy
Overweight - genetics
Overweight - metabolism
Prospective Studies
Resveratrol
Sirtuin 1
Sirtuin 1 - biosynthesis
Sirtuin 1 - blood
Sirtuin 1 - genetics
Stilbenes - administration & dosage
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Summary:Abstract Background Sirtuin 1 (Sirt1) plays an important role in vascular biology, and influences aspects of age-dependent atherosclerosis. In animals, the sirtuin system is strongly influenced by resveratrol and caloric restriction, but its expression in humans is controversial. This study investigated the effects of resveratrol and caloric restriction on Sirt1 serum concentrations and vascular biomarkers in a healthy human population. Methods and results Forty-eight healthy participants (24 women) aged 55–65 years were randomized to either 30 days of resveratrol administration (500 mg/day) or caloric restriction (1000 cal/day). Blood was collected at baseline and day 30. Laboratory data analyzed were triglycerides, total cholesterol, HDL, VLDL, LDL, apolipoprotein A1, apolipoprotein B, lipoprotein (a), non-esterified fatty acids (NEFA), glucose, insulin, oxidative stress, C-reactive protein, and Sirt1. Expression of the Sirt1 gene was analyzed using real-time PCR. Caloric restriction diminished the abdominal circumference and improved the lipid profile, but not resveratrol intervention. Resveratrol and caloric restriction increased serum concentrations of Sirt1, from 1.06 ± 0.71 to 5.75 ± 2.98 ng/mL; p < 0.0001, and from 1.65 ± 1.81 to 5.80 ± 2.23 ng/mL; p < 0.0001, respectively. Sirt1 increased in women and men in both interventions. On the other hand expression of Sirt1 mRNA was not different after caloric restriction and resveratrol treatment. Conclusions Caloric restriction and resveratrol significantly increased plasma concentrations of Sirt1. The long-term impact of these interventions on atherosclerosis should be assessed.
ISSN:0167-5273
1874-1754
DOI:10.1016/j.ijcard.2016.10.058