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A screening method for the evaluation of selenium status.

I Lombeck1, O Papadaki-Papandreou, F Kamiri

  • 1Children's Hospital Volos, Greece.

Journal of Trace Elements and Electrolytes in Health and Disease
|September 1, 1989
PubMed
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A new screening test accurately measures blood selenium (Se) content using filter paper. Greek mothers and infants had lower blood Se levels compared to Chinese mothers, with a significant decline in Greek infants.

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Human Health

Background:

  • Selenium (Se) is an essential trace element crucial for human health.
  • Dietary intake and geographical location significantly influence blood Se levels.
  • Accurate and practical methods for Se estimation are needed for population studies.

Purpose of the Study:

  • To develop and validate a simple screening test for estimating Se content in whole blood.
  • To assess and compare blood Se levels in populations from Greece and China.
  • To investigate Se status in Greek mothers, newborns, and infants over time.

Main Methods:

  • Whole blood samples were applied to filter paper, dried, and punched out.
  • Se content was quantified using atomic absorption spectrophotometry with hydride generation.

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  • Method precision (within-run 6.3%) and recovery (102%) were evaluated.

    • Main Results:

    • The developed screening test demonstrated good precision and recovery.
    • Blood Se levels were significantly lower in Greek mothers compared to Chinese mothers.
    • Greek newborns had higher blood Se than their mothers, followed by a sharp decline in infants within 4 months.

    Conclusions:

    • The developed filter paper-based method is a practical and reliable screening tool for blood Se estimation.
    • Geographical factors and maternal-neonate transfer influence Se status.
    • Early life stages in certain populations may be at risk for low Se status.