The Effects of Beta-Glucan Rich Oat Bread on Serum Nitric Oxide and Vascular Endothelial Function in Patients With Hypercholesterolemia Publisher Pubmed



Tabesh F¹ ; Sanei H² ; Jahangiri M¹ ; Momenizadeh A³ ; Tabesh E⁴ ; Pourmohammadi K⁵ ; Sadeghi M² Show Affiliations
Source: BioMed Research International Published:2014

Abstract

Introduction. Oats are high in soluble fibers and effective in reducing the risk of cardiovascular diseases (CVD). We assessed the effects of beta-glucan from oat bran on serum nitric oxide (NO) endothelial function in patients with hypercholesterolemia. Method. Sixty hypercholesterolemic patients were randomly divided to receive an experimental bread rich in beta-glucan from oat bran (intervention) or bread rich in wheat fiber (control) for four weeks. All subjects had the same diet for two-week baseline period and hypocaloric diet for four weeks of intervention. Serum NO concentration and flow-mediated dilation (FMD) were determined before and after the experiment. Results. Mean age of the participants was 51.1 ± 9.3 years and 65% (n = 39) were female. After intervention, serum NO concentration increased by 50.2 ± 19.8 mol/lit in the intervention group (P = 0.017), but no change was observed in the control group (17.5 ± 27.5 mol/lit; P = 0.530). No change of FMD was observed in the intervention (0.48 ± 0.78%; P = 0.546) or in the control group (0.59 ± 0.92%; P = 0.533). Conclusion. Consumption of oat bread for four weeks increases serum NO concentration but has no effect on FMD. Further studies are warranted in this regard. © 2014 Faezeh Tabesh et al.