There are current trials investigating the effect of resveratrol supplementation on endothelial function and blood pressures among patients with metabolic syndrome (MetS); however, the findings are controversial.
This systematic review and meta-analysis of randomized controlled trials (RCTs) were carried out to summarize the effects of resveratrol supplementation on endothelial activation and blood pressures among patients with MetS and related disorders.
We searched systematically online databases including: PubMed-Medline, Embase, ISI Web of Science and Cochrane Central Register of Controlled Trials until October, 2018. Two independent authors extracted data and assessed the quality of included articles. Data were pooled using the fixed- or random-effects model and considered as standardized mean difference (SMD) with 95% confidence intervals (95% CI).
Out of 831 electronic citations, 28 RCTs (with 33 findings reported) were included in the meta-analyses. The findings showed that resveratrol intervention significantly increased flow-mediated dilatation (FMD) levels (SMD 1.77; 95% CI 0.25, 3.29; P = 0.02; I2: 96.5). However, resveratrol supplements did not affect systolic blood pressure (SBP) (SMD − 0.27; 95% CI − 0.57, 0.03; P = 0.07; I2: 88.9) and diastolic blood pressure (DBP) (SMD − 0.21; 95% CI − 0.52, 0.11; P = 0.19; I2: 89.8).
Resveratrol supplementation significantly increased FMD among patients with MetS and related disorders, but did not affect SBP and DBP. Additional prospective studies are needed to investigate the effect of resveratrol supplementation on endothelial function and blood pressures, using higher-dose of resveratrol with longer durations.
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Diastolic blood pressures
Non-alcoholic fatty liver disease
Systolic blood pressure
Type 2 diabetes mellitus
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The present study was supported by a grant from the Vice-chancellor for Research, AUMS, Arak, and Iran.
The present study was founded by a grant from the Vice Chancellor for Research, Arak University of Medical Sciences, in Iran.
Ethics approval and consent to participate
This study was considered exempt by the AUMS Institutional Review Board.
Conflict of interest
The authors declare no conflict of interest.
This article is part of the topical collection on Nutraceuticals in Hypertension & Cardiovascular Prevention.
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Akbari, M., Tamtaji, O.R., Lankarani, K.B. et al. The Effects of Resveratrol Supplementation on Endothelial Function and Blood Pressures Among Patients with Metabolic Syndrome and Related Disorders: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. High Blood Press Cardiovasc Prev 26, 305–319 (2019). https://doi.org/10.1007/s40292-019-00324-6
- Endothelial function
- Blood pressures
- Metabolic syndrome