Extra virgin olive oil reduces liver oxidative stress and tissue depletion of long-chain polyunsaturated fatty acids produced by a high saturated fat diet in mice


  • R. Valenzuela Nutrition Department, Faculty of Medicine, Universidad de Chile - Lipid Center, Institute of Nutrition and Food Technology (INTA), Universidad de Chile
  • M. C. Hernandez-Rodas Nutrition Department, Faculty of Medicine, Universidad de Chile
  • A. Espinosa Medical Technology Department, Faculty of Medicine
  • M. A. Rincón Lipid Center, Institute of Nutrition and Food Technology (INTA), Universidad de Chile
  • N. Romero Faculty of Chemical Sciences and Pharmacy, Department of Food Science and Chemical Technology, Universidad de Chile
  • C. Barrera Nutrition Department, Faculty of Medicine, Universidad de Chile
  • M. Marambio Nutrition Department, Faculty of Medicine, Universidad de Chile
  • J. Vivero Nutrition Department, Faculty of Medicine, Universidad de Chile
  • A. Valenzuela Medical Technology Department, Faculty of Medicine - Lipid Center, Institute of Nutrition and Food Technology (INTA), Universidad de Chile - Faculty of Medicine, Universidad de Los Andes




Extra virgin olive oil, High fat diet, Liver fat deposition, Oxidative stress, Tissue n-6 and n-3 LCPUFA depletion


Long-chain polyunsaturated fatty acids (LCPUFA) which are synthesized mainly in the liver have relevant functions in the organism. A diet high in fat (HFD) generates an increase in the levels of fat and induces oxidative stress (lipo-peroxidation) in the liver, along with a reduction in tissue n-3 and n-6 LCPUFA. Extra virgin olive oil (EVOO) is rich in anti-oxidants (polyphenols and tocopherols) which help to prevent the development of oxidative stress. This study evaluated the role of EVOO in preventing the induction of fat deposition and oxidative stress in the liver and in the depletion of LCPUFA in the liver, erythrocytes and brain generated by a HFD in C57BL/6J mice. Four experimental groups (n = 10/group) were fed a control diet (CD) or a HFD for 12 weeks and were respectively supplemented with EVOO (100 mg/day). The group fed HFD showed a significant increase (p < 0.05) in fat accumulation and oxidative stress in the liver, accompanied by a reduction in the levels of n-3 and n-6 LCPUFA in the liver, erythrocytes and brain. Supplementation with EVOO mitigated the increase in fat and oxidative stress produced by HFD in the liver, along with a normalization of LCPUFA levels in the liver, erythrocytes and brain. It is proposed that EVOO supplementation protects against fat accumulation, and oxidative stress and normalizes n-3 and n-6 LCPUFA depletion induced in mice fed a HFD.


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How to Cite

Valenzuela R, Hernandez-Rodas MC, Espinosa A, Rincón MA, Romero N, Barrera C, Marambio M, Vivero J, Valenzuela A. Extra virgin olive oil reduces liver oxidative stress and tissue depletion of long-chain polyunsaturated fatty acids produced by a high saturated fat diet in mice. Grasas aceites [Internet]. 2016Jun.30 [cited 2024Jul.25];67(2):e129. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1595




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