Effects of a hypoenergetic diet associated with açaí (Euterpe oleracea Mart.) pulp consumption on antioxidant status, oxidative stress and inflammatory biomarkers in overweight, dyslipidemic individuals

Abstract

To evaluate the effects of a hypoenergetic diet (HD)associated with açaí pulp consumption on oxidative stress, antioxidant status and inflammatory biomarkers in overweight, dyslipidemic individuals. A randomized, double-blind, placebo-controlled clinical trial was conducted for 90 days. The study began with a 30-day run-in period, during which the intervention was exclusively a HD. Following this period, volunteers were randomized into 2 groups, and 200g of either açaí pulp or placebo were added to the HD for 60 days. Anthropometric measurements, arterial pressure, oxidative stress and antioxidant status biomarkers, inflammatory and biochemical biomarkers were evaluated. Sixty-nine volunteers completed the clinical trial, 30 of which were in the HD+açaí group and 39 in HD+placebo group. Plasma 8-isoprostane concentrations significantly reduced 60 days after the intervention in the açaí group (p=0.000), and there was a significant difference between the groups (açaí versus placebo; p=0.037). Regarding inflammatory status parameters, a significant reduction in IL-6 was observed in the HD+açaí group (p=0.042), and IFN-γ decreased significantly in both groups, HD+açaí (p=0.001) and HD+placebo (p=0.008); there were, however, no differences between the groups. Lipid profile parameters and blood glucose levels did not show change, regardless of nutritional intervention. The addition of açaí to a HD, for 60 days, reduced oxidative stress and improved inflammation in overweight, dyslipidemic individuals.