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The Effects of Quercetin Supplementation on Blood Pressures and Endothelial Function Among Patients With Metabolic Syndrome and Related Disorders: A Systematic Review and Meta-Analysis of Randomized Controlled Trials Publisher Pubmed



Tamtaji OR1 ; Milajerdi A2, 3 ; Dadgostar E4 ; Kolahdooz F5 ; Chamani M6 ; Amirani E1 ; Mirzaei H1 ; Asemi Z1
Authors
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Authors Affiliations
  1. 1. Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
  2. 2. Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Halal Research Center of IRI, FDA, Tehran, Iran
  5. 5. Indigenous and Global Health Research, Department of Medicine, University of Alberta, Edmonton, Canada
  6. 6. Department of Gynecology and Obstetrics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

Source: Current Pharmaceutical Design Published:2019


Abstract

Background: This systematic review and meta-analysis of randomized controlled trials (RCTs) were performed to determine the effect of quercetin administration on blood pressures and endothelial function among patients with metabolic syndrome (MetS) and related disorders. Methods: We searched systematically online databases including Cochrane Library, EMBASE, MEDLINE, and Web of Science to identify the relevant RCTs until December 2018. Q-test and I2 statistics were applied to assess heterogeneity among the included studies. Data were pooled using a random-effects model and weighted mean difference (WMD) was considered as the overall effect size. Results: Out of 284 citations, 8 RCTs were included in the meta-analysis. We found a significant reduction in systolic blood pressure (SBP) (WMD:-1.69; 95% CI:-3.22,-0.17) following the intake of quercetin supplements. However, quercetin supplementation did not significantly affect diastolic blood pressure (DBP) (WMD:-3.14; 95% CI:-8.24, 1.95), vascular cell adhesion molecule 1 (VCAM-1) (WMD:-24.49; 95% CI:-53.74, 4.77) and intercellular adhesion molecule 1 (ICAM-1) (WMD:-5.78; 95% CI:-12.93, 1.38). Conclusion: In summary, the current meta-analysis demonstrated that quercetin supplementation significantly reduced SBP, yet did not affect DBP, VCAM-1 and ICAM-1 among patients with MetS and related disorders. © 2019 Bentham Science Publishers.
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