The effect of age on vitamin E status, metabolism, and function: metabolism as assessed by labeled tocopherols

Ann N Y Acad Sci. 2004 Dec:1031:40-3. doi: 10.1196/annals.1331.004.

Abstract

The effects of age on vitamin E metabolism were studied in 97 healthy 20-75-year-old male nonsmoking Austrian volunteers of the VITAGE project. After a single oral intake of 30 mg d(6)-RRR-alpha- and d(2)-RRR-gamma-tocopheryl acetate, blood and 24-hour urine was collected. Deuterated tocopherols in plasma and deuterated urinary metabolites were analyzed by GC-MS. A first evaluation revealed a similar uptake of d(6)-alpha- and d(2)-gamma-tocopherol during the first 6 hours, and then d(2)-gamma-tocopherol started to decrease. Urinary d(2)-gamma- carboxyethyl hydroxychroman metabolites (CEHCs) exceeded those of d(6)-alpha-CEHCs by about 10 times. There was no effect of age. Thus, there might be no need for a higher vitamin E intake for healthy elderly nonsmoking men.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Adult
  • Aged
  • Aging*
  • Austria
  • Chromans / urine
  • Deuterium
  • Humans
  • Male
  • Middle Aged
  • Nutritional Status*
  • Propionates / urine
  • Tocopherols / metabolism*
  • Tocopherols / pharmacokinetics*
  • Vitamin E / metabolism*
  • alpha-Tocopherol / blood
  • alpha-Tocopherol / pharmacokinetics
  • alpha-Tocopherol / urine
  • gamma-Tocopherol / blood
  • gamma-Tocopherol / pharmacokinetics
  • gamma-Tocopherol / urine

Substances

  • Chromans
  • Propionates
  • Vitamin E
  • 2,7,8-trimethyl-2-(beta-carboxyethyl)-6-hydroxychroman
  • 2,5,7,8-tetramethyl-2-(2'-carboxyethyl)-6-hydroxychroman
  • gamma-Tocopherol
  • Deuterium
  • alpha-Tocopherol
  • Tocopherols