A recent study {{pmid|37447275}} in a [[Randomized Controlled Trial|randomized trial]] involving adults aged 55 to 65 compared the effects of resveratrol supplementation to a caloric-restricted diet. Both interventions raised circulating SIRT1 levels and reduced plasma noradrenaline, suggesting cardiovascular benefits. However, the study found differences between the groups in vascular reactions. Specifically, improvements in [[Nitrate-Mediated Vasodilation (NMD)|nitrate-mediated vasodilation (NMD)]] were seen only with caloric restriction, not with resveratrol. Additionally, SIRT1 was linked to enhanced flow-mediated vasodilation (FMD) in men but not in women. This suggests that while resveratrol mirrors some benefits of caloric restriction, it doesn't capture all, especially regarding vascular effects.
A 2023 [[Randomized Controlled Trial|randomized control trial]]{{pmid|37447275}} involving 48 adults aged 55 to 65 compared the effects of resveratrol supplementation to a caloric-restricted diet. Both interventions raised circulating SIRT1 levels and reduced plasma noradrenaline, suggesting cardiovascular benefits. However, the study found differences between the groups in vascular reactions. Specifically, improvements in [[Nitrate-Mediated Vasodilation (NMD)|nitrate-mediated vasodilation (NMD)]] were seen only with caloric restriction, not with resveratrol. Additionally, SIRT1 was linked to enhanced flow-mediated vasodilation (FMD) in men but not in women. This suggests that while resveratrol mirrors some benefits of caloric restriction, it doesn't capture all, especially regarding vascular effects.
Latest revision as of 10:19, 11 February 2024
A 2023 randomized control trial[1] involving 48 adults aged 55 to 65 compared the effects of resveratrol supplementation to a caloric-restricted diet. Both interventions raised circulating SIRT1 levels and reduced plasma noradrenaline, suggesting cardiovascular benefits. However, the study found differences between the groups in vascular reactions. Specifically, improvements in nitrate-mediated vasodilation (NMD) were seen only with caloric restriction, not with resveratrol. Additionally, SIRT1 was linked to enhanced flow-mediated vasodilation (FMD) in men but not in women. This suggests that while resveratrol mirrors some benefits of caloric restriction, it doesn't capture all, especially regarding vascular effects.
↑Gonçalinho GHF et al.: Sirtuin 1 and Vascular Function in Healthy Women and Men: A Randomized Clinical Trial Comparing the Effects of Energy Restriction and Resveratrol.
Nutrients
2023. (PMID 37447275)
[PubMed]
[DOI]
[Full text]
Abstract
Background: Sirtuin 1 (SIRT1) has been associated with longevity and protection against cardiometabolic diseases, but little is known about how it influences human vascular function. Therefore, this study evaluated the effects of SIRT1 activation by resveratrol and energy restriction on vascular reactivity in adults. Methods: A randomized trial allocated 48 healthy adults (24 women and 24 men), aged 55 to 65 years, to resveratrol supplementation or energy restriction for 30 days. Blood lipids, glucose, insulin, C-reactive protein, noradrenaline, SIRT1 (circulating and gene expression), and flow-mediated vasodilation (FMD) and nitrate-mediated vasodilation (NMD) were measured. Results: Both interventions increased circulating SIRT1 (p < 0.001). Pre- and post-tests changes of plasma noradrenaline were significant for both groups (resveratrol: p = 0.037; energy restriction: p = 0.008). Baseline circulating SIRT1 was inversely correlated with noradrenaline (r = -0.508; p < 0.01), and post-treatment circulating SIRT1 was correlated with NMD (r = 0.433; p < 0.01). Circulating SIRT1 was a predictor of FMD in men (p = 0.045), but not in women. SIRT1 was an independent predictor of NMD (p = 0.026) only in the energy restriction group. Conclusions: Energy restriction and resveratrol increased circulating SIRT1 and reduced sympathetic activity similarly in healthy adults. SIRT1 was independently associated with NMD only in the energy restriction group.
