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Related Experiment Videos

Vitamin E deficiency and enhanced platelet function: reversal following E supplementation

A M Lake, M J Stuart, F A Oski

    The Journal of Pediatrics
    |May 1, 1977
    PubMed
    Summary

    Vitamin E deficiency causes increased platelet activity, which normalizes with vitamin E supplementation. This suggests vitamin E plays a key role in regulating platelet function and preventing excessive clotting.

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    Acute Compartment Syndrome.

    The Physician and sportsmedicine·2016

    Area of Science:

    • Biochemistry
    • Hematology
    • Nutrition Science

    Background:

    • Vitamin E is a crucial fat-soluble antioxidant.
    • Platelet aggregation is vital for hemostasis but can lead to thrombosis when dysregulated.
    • Understanding nutrient roles in platelet function is essential for metabolic health.

    Observation:

    • Two children with vitamin E deficiency exhibited heightened platelet responsiveness to adenosine diphosphate, epinephrine, and collagen.
    • Despite hyperaggregability, no clinical signs of thrombosis were present during the vitamin E-deficient state.
    • Elevated levels of malonaldehyde, a marker of peroxidation, were noted in the vitamin E-deficient state.

    Findings:

    • Vitamin E supplementation completely reversed the observed platelet hyperaggregability.

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  • The mechanism involves vitamin E's action on platelet arachidonate peroxidation, likely at the phospholipase A2 activation step.
  • This regulates the conversion of arachidonic acid to cyclic endoperoxides.

    • Implications:

    • Vitamin E plays a critical role in modulating platelet function and preventing excessive aggregation.
    • This finding has implications for managing conditions involving platelet dysregulation.
    • Ensuring adequate vitamin E intake may be important for cardiovascular health and thrombosis prevention.