Strawberry intake increases blood fluid, erythrocyte and mononuclear cell defenses against oxidative challenge

Sara Tulipani, Tatiana Armeni, Francesca Giampieri, José M. Alvarez-Suarez, Ana M. Gonzalez-Paramás, Celestino Santos-Buelga, Franco Busco, Giovanni Principato, Stefano Bompadre, José L. Quiles, Bruno Mezzetti, Maurizio Battino

Research output: Contribution to journalArticlepeer-review

Abstract

The health promoting effects of a regular consumption of strawberries deserve attention, and a direct or indirect antioxidant role of strawberry bioactive compounds is among the most probable mechanisms underlying their beneficial properties. In the present study, we evaluated the overall effects of a 2-week daily consumption of strawberries on plasma antioxidant status, membrane lipid susceptibility to ex vivo-induced oxidation, and erythrocyte and mononuclear cell resistance to oxidative damage in apparently healthy volunteers. After strawberry intake, a moderate increase in fasting plasma antioxidant capacity and vitamin C was observed, together with a significant increase in the lag phase preceding plasma lipid oxidation. A significantly enhanced resistance to oxidative hemolysis was confirmed in red blood cells, while no significant changes were found in the extent of their membrane lipid peroxidation. For the first time, increased intake of strawberries for only 2 weeks was shown to be sufficient to attenuate mononuclear cell mortality after ex vivo exposure to a single acuteoxidative challenge, but the analysis of DNA oxidative damage gave conflicting results. These findings suggest that a regular consumption of strawberries may enhance body defences against oxidative challenges.

Original languageEnglish
Pages (from-to)87-93
Number of pages7
JournalFood Chemistry
Volume156
DOIs
Publication statusPublished - Aug 1 2014

Keywords

  • Antihaemolytic effects
  • DNA damage
  • Human study
  • Mononuclear cell mortality
  • Plasma antioxidant status
  • Strawberry

ASJC Scopus subject areas

  • Food Science
  • Analytical Chemistry
  • Medicine(all)

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