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Related Experiment Videos

Interactions of trace elements: clinical significance.

G J Brewer, G M Hill, R D Dick

    Journal of the American College of Nutrition
    |January 1, 1985
    PubMed
    Summary

    Zinc supplementation can treat Wilson's disease by reducing copper absorption. Zinc therapy also impacts copper levels in sickle cell anemia patients and may protect against oral lead toxicity.

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    Area of Science:

    • Trace element interactions
    • Biochemistry
    • Toxicology

    Background:

    • Sickle cell anemia is often associated with zinc deficiency, leading to increased copper levels.
    • Zinc's role in copper absorption and its potential impact on ceruloplasmin levels are not fully understood.
    • Wilson's disease involves copper accumulation, necessitating effective treatment strategies.

    Purpose of the Study:

    • To investigate the interactions between zinc, copper, and lead.
    • To explore the therapeutic potential of zinc in managing copper overload conditions like Wilson's disease.
    • To assess zinc's protective effects against lead toxicity.

    Main Methods:

    • Examined the effects of zinc administration on copper levels in sickle cell anemia models.
    • Investigated zinc's mechanism in inhibiting copper absorption via intestinal metallothionein induction.
    • Assessed the impact of oral zinc supplementation on lead toxicity in rat models.

    Main Results:

    • Zinc deficiency in sickle cell anemia correlates with increased copper and ceruloplasmin.
    • Zinc therapy reverses these effects, potentially causing copper deficiency with pharmacological doses.
    • Zinc effectively inhibits copper absorption and reabsorption, creating a negative copper balance beneficial for Wilson's disease.

    Conclusions:

    • Zinc therapy shows promise for treating Wilson's disease by managing copper accumulation.
    • Zinc's influence on copper metabolism is significant in both deficiency and overload states.
    • Zinc may offer protection against oral lead toxicity, but further research is needed for non-oral exposure.

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