• Nutrition · Oct 2017

    Randomized Controlled Trial

    Effect of 1-y oral supplementation with vitaminized olive oil on platelets from healthy postmenopausal women.

    • Arianna Vignini, Laura Nanetti, Francesca Raffaelli, Jacopo Sabbatinelli, Eleonora Salvolini, Veronica Quagliarini, Nelvio Cester, and Laura Mazzanti.
    • Department of Clinical Sciences, Section of Biochemistry, Biology and Physics, School of Nutrition, Università Politecnica delle Marche, Ancona, Italy.
    • Nutrition. 2017 Oct 1; 42: 92-98.

    ObjectiveOlive oil is the main fat source in the Mediterranean diet and shows a protective role against aging and related diseases. Osteoporosis represents a serious health problem worldwide and is associated with an increased risk for fractures and mortality. Nutrition should be part of bone disease prevention strategies, especially in light of the aging population and the effect of diet on bone health. The aim of this study was to investigate whether oral supplementation with extra virgin olive oil (VOO) enriched with vitamins D3, K1, and B6 (VitVOO) is able to modify some physicochemical and functional plasma membrane properties and nitrosative stress markers status.MethodsIn this single-center, randomized placebo-controlled trial, 60 postmenopausal women were administered either VitVOO or placebo (PlaVOO). After 1 y of oral supplementation, platelet membrane fluidity changes, Na+/K+-ATPase activity, serum nitric oxide, and peroxynitrite levels were determined in participants.ResultsAfter 1 y (time 1), women taking VitVOO showed lower nitric oxide levels than those taking PlaVOO; the same trend was found for peroxynitrite levels. As far as membrane fluidity was concerned, a significant decrease in anisotropy of diphenylhexatriene and trimethylammonium-diphenylhexatriene at time 1 in VitVOO participants compared with PlaVOO was found. Finally, Na+/K+-ATPase activity showed a significant increase after VitVOO supplementation.ConclusionThe supplementation of VitVOO into the diet of postmenopausal women could represent a proper tool for platelet function and a useful strategy against nitrosative stress and related diseases, thus confirming the antioxidant role played by the added vitamins.Copyright © 2017 Elsevier Inc. All rights reserved.

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