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Aspects of trace element interactions during development.

L S Hurley, C L Keen, B Lönnerdal

    Federation Proceedings
    |April 1, 1983
    PubMed
    Summary
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    Nutritional trace element deficiencies can stem from poor intake or interactions between essential elements like zinc, copper, and iron. These interactions are particularly critical during prenatal and early development, impacting fetal outcomes and nutrient absorption.

    Area of Science:

    • Nutritional Science
    • Developmental Biology
    • Toxicology

    Background:

    • Nutritional trace element deficiencies are a significant health concern.
    • Secondary deficiencies can arise from complex interactions between essential trace elements.
    • Understanding these interactions is crucial for prenatal and early postnatal development.

    Purpose of the Study:

    • To summarize the origins of nutritional trace element deficiencies.
    • To present evidence of essential trace element interactions during development.
    • To evaluate trace element concentrations in infant formulas.

    Main Methods:

    • Feeding pregnant rats diets with varying zinc and copper concentrations.
    • Analyzing maternal and fetal liver concentrations of copper and zinc.

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  • Examining iron and manganese interactions through supplemented diets in mice.
  • Analyzing trace element concentrations in proprietary infant formulas.

    • Main Results:

    • Zinc and copper interaction was observed only under dietary copper deficiency.
    • High iron levels depressed manganese absorption; high iron also depressed zinc absorption.
    • Zinc deficiency led to increased iron concentrations in maternal and fetal livers.
    • Some infant formulas exhibited incorrect trace element concentrations and ratios.

    Conclusions:

    • Essential trace element interactions significantly impact prenatal and early development.
    • Further investigation into these developmental interactions is warranted.
    • Caution is advised regarding trace element supplementation during pregnancy, lactation, and early childhood.