Suppression of DNA/RNA and protein oxidation by dietary supplement which contains plant extracts and vitamins: A randomized, double-blind, placebo-controlled trial

Elizabeth Fragopoulou, Lamprini Gavriil, Chrysa Argyrou, Ioannis Malagaris, Maria Choleva, Smaragdi Antonopoulou, Georgia Afxentiou, Eleana Nikolaou

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Background: Excessive oxidative stress may impair bio-molecules and cellular function. Multi antioxidant supplementation is thought to be more effective than a single antioxidant probably through the synergistic or complementary action of natural substances that could enhance the prospective effect. Methods: In order to estimate the effect of a plant extract based supplement in apparently healthy volunteers' oxidative stress markers, a double-blind and placebo controlled intervention was performed. 62 apparently healthy volunteers, overweight with medium adherence to the Mediterranean diet, were recruited and randomly allocated into two intervention groups (supplement or placebo) for 8 weeks. Basic biochemical markers, oxidized LDL (oxLDL), resistance of serum in oxidation, protein carbonyls in serum and 8-isoprostane and DNA/RNA damage in urine were measured. Results: No differentiation was observed in basic biochemical markers, in oxLDL levels as well as in serum resistance against oxidation, during intervention in the examined groups. A significant resistance regarding urine isoprostanes levels in the supplement group compared to the placebo one, was observed. Reduction on DNA/RNA damage and on protein carbonyls levels (almost 30% and 20% respectively, at 8 weeks) was detected in volunteers who consumed the supplement compared to the control group. Conclusion: Consumption of plant extract based supplement seems to reduce DNA/RNA and protein oxidation and in less extent lipids peroxidation. Trial registration: ClinicalTrials.gov Identifier for this study is: NCT02837107.

Original languageEnglish (US)
Article number187
JournalLipids in Health and Disease
Volume17
Issue number1
DOIs
StatePublished - Aug 16 2018
Externally publishedYes

Keywords

  • Aloe vera
  • Anti-oxidants
  • DNA oxidation
  • Plant extracts
  • Protein oxidation
  • Vitamins

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical

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