Cited by 53Vitamin C and Antioxidants ResearchAntioxidant Activity and Oxidative StressTrace Elements in Health

Acute prooxidant effects of vitamin C in EDTA chelation therapy and long-term antioxidant benefits of therapy

Hininger, Isabelle, Waters, Robert, Osman, Mireille, Garrel, Catherine, Fernholz, Karen, Roussel, Anne Marie, Anderson, Richard A.·2005·Free Radical Biology and Medicine

Abstract

Chelation therapy is thought to not only remove contaminating metals but also to decrease free radical production. EDTA chelation therapy, containing high doses of vitamin C as an antioxidant, is often used in the treatment of diseases such as diabetes and cardiovascular diseases but the effectiveness of this treatment may be variable and its efficacy has not been demonstrated conclusively. The objective of this work was to determine if the vitamin C added to standard chelation therapy cocktails was prooxidant. We administered a standard EDTA cocktail solution with or without 5 g of sodium ascorbate. One hour following the standard chelation therapy, there were highly significant prooxidant effects on lipids, proteins, and DNA associated with decreased activities of RBC glutathione peroxidase and superoxide dismutase while in the absence of sodium ascorbate, there were no acute signs of oxidative damage. After 16 sessions of standard chelation therapy, the acute prooxidant effects of vitamin C remained, but, even in the absence of nutrient supplements, there were beneficial long-term antioxidant effects of chelation therapy and plasma peroxide levels decreased. In conclusion, multiple sessions of EDTA chelation therapy protect lipids against oxidative damage. However, standard high amounts of vitamin C added to EDTA chelation solutions also display short term prooxidant effects. The added benefits of lower levels of vitamin C in chelation therapy need to be documented.

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Crossref · 10.1016/j.freeradbiomed.2005.02.016

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Authors
Hininger, I., Waters, R., Osman, M., Garrel, C., Fernholz, K., Roussel, A. M., & Anderson, R. A.
Affiliations
  • Université Joseph Fourier (FR)
  • Agricultural Research Service (US)
Corresponding author
Anderson, Richard A.
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2005-06
Volume
38
Issue
12
Pages
1565-1570
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2072919516
Cited by
53
References
45
Citations by year
2025: 2 · 2022: 3 · 2021: 1 · 2020: 4 · 2019: 2 · 2017: 2 · 2016: 6 · 2015: 2 · 2014: 3 · 2013: 6 · 2012: 2
FWCI
3.35
Type
journal article
Language
en
Open access
closed
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
Keywords
EDTA chelation therapy, vitamin C, sodium ascorbate, pro-oxidant activity, oxidative stress, lipid peroxidation, protein oxidation, DNA oxidation, glutathione peroxidase, superoxide dismutase, antioxidant activity, free radical scavenging
MeSH terms
Adult, Aged, Antioxidants, Ascorbic Acid, Chelating Agents, DNA Damage, Drug Therapy, Combination, Edetic Acid, Female, Humans, Male, Malondialdehyde, Middle Aged, Time Factors, Lipid Peroxidation, Chelation Therapy, Oxidative Stress

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