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Vitamin E regulation.

Maret G Traber1

  • 1Linus Pauling Institute, Oregon State University Corvallis, Oregon 97331, USA. maret.traber@oregonstate.edu

Current Opinion in Gastroenterology
|February 16, 2005
PubMed
Summary
This summary is machine-generated.

This review details how the body regulates alpha-tocopherol (a form of vitamin E) to maintain optimal levels and prevent the buildup of other related compounds. Understanding these mechanisms is key to vitamin E nutrition.

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Area of Science:

  • Biochemistry
  • Human Nutrition
  • Molecular Biology

Background:

  • Human vitamin E deficiency has revealed critical regulatory pathways for plasma alpha-tocopherol.
  • These mechanisms prevent the accumulation of other vitamin E-like antioxidant molecules, such as gamma-tocopherol.

Purpose of the Study:

  • To review the known regulatory mechanisms controlling plasma alpha-tocopherol concentrations.
  • To explore the interplay between vitamin E metabolism and xenobiotic clearance pathways.

Main Methods:

  • Cloning and crystallization of alpha-tocopherol regulatory proteins.
  • Investigation of vitamin E metabolism and its influence on xenobiotic pathways.

Main Results:

  • Alpha-tocopherol regulatory proteins have been identified and their structures elucidated.

Related Experiment Videos

  • Emerging evidence suggests vitamin E influences xenobiotic metabolism, and vice versa.

    • Conclusions:

    • Vitamin E is a potent molecule with tightly regulated concentrations.
    • Adequate alpha-tocopherol levels are maintained for essential, yet fully defined, physiological functions.