Oxidative status of stressed caenorhabditis elegans treated with epicatechin

Susana González-Manzano, Ana M. González-Paramás, Laura Delgado, Simone Patianna, Felipe Surco-Laos, Montserrat Dueñas, Celestino Santos-Buelga

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The aim of this work was to examine the mechanisms involved in the in vivo antioxidant effects of epicatechin (EC), a major flavonoid in the human diet. The influence of EC in different oxidative biomarkers (reactive oxygen species (ROS) production, intracellular glutathione, activity of catalase (CAT), glutathione peroxidase (GPx), and superoxide dismutase (SOD)) was studied in the model organism Caenorhabditis elegans. Under thermal stress condition, exposure of the worms (wild type N2 strains) to EC (200 μM) significantly reduced ROS levels (up to 28%) and enhanced the production of reduced glutathione (GSH). However, no significant changes were appreciated in the activities of GPx, CAT, and SOD, suggesting that further activation of these antioxidant enzymes was not required once the concentration of ROS in the EC-treated worms was restored to what could be considered physiological levels.

Original languageEnglish
Pages (from-to)8911-8916
Number of pages6
JournalJournal of Agricultural and Food Chemistry
Volume60
Issue number36
DOIs
StatePublished - 12 Sep 2012
Externally publishedYes

Keywords

  • Caenorhabditis elegans
  • epicatechin
  • flavonoids
  • glutathione
  • ROS
  • thermoresistance

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