Randomized, placebo-controlled trial of dietary supplementation of α-tocopherol on mutagen sensitivity levels in melanoma patients: A pilot trial

S. Mahabir, D. Coit, L. Liebes, M. S. Brady, J. J. Lewis, G. Roush, M. Nestle, D. Fry, M. Berwick

Research output: Contribution to journalArticle

Abstract

We evaluated the effects of vitamin E (DL-α-tocopherol) on mutagen sensitivity levels in a randomized placebo-controlled pilot trial. In brief, a dietary supplement of 1000 mg/day vitamin E or a placebo was randomly administered for 3 months to melanoma outpatients clinically free of the disease. Plasma vitamin E and mutagen sensitivity levels were measured at baseline and at the end of the trial after 3 months. At baseline, we found no significant differences in plasma vitamin E and mutagen sensitivity levels between the two groups. We also measured dietary intake at baseline and found dietary vitamin E to be a poor predictor of plasma levels of vitamin E. After 3 months of supplementation, we found that plasma levels of α-tocopherol increased significantly (P= 0.0005) in the vitamin E compared to the placebo group. We also found a non-significant, but consistent decrease in plasma γ-tocopherol concentrations in the vitamin E supplemented compared to the placebo group. We did not find any significant difference between the vitamin E and placebo groups in mutagen sensitivity levels either at baseline or after 3 months of supplementation. We conclude that short term vitamin E supplementation, although it causes increased blood levels of α-tocopherol, does not provide protection against bleomycin-induced chromosome damage.

Original languageEnglish (US)
Pages (from-to)83-90
Number of pages8
JournalMelanoma Research
Volume12
Issue number1
DOIs
StatePublished - 2002

Keywords

  • Melanoma
  • Mutagen sensitivity
  • Vitamin E

ASJC Scopus subject areas

  • Oncology
  • Dermatology
  • Cancer Research

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