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Related Experiment Videos

Interrelationship between iron deficiency and lead intoxication (Part 1).

N S Hashmi1, D N Kachru, S K Tandon

  • 1Industrial Toxicology Research Centre, Lucknow, India.

Biological Trace Element Research
|December 1, 1989
PubMed
Summary

Iron deficiency and lead exposure share biochemical markers, but increased blood delta-aminolevulinic acid dehydratase (ALAD) activity without zinc protoporphyrin (ZPP) changes specifically indicates iron deficiency in rats.

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Area of Science:

  • Biochemistry
  • Toxicology
  • Nutritional Science

Background:

  • Lead (Pb) exposure and iron (Fe) deficiency are common health concerns.
  • Both conditions can affect various biochemical parameters.
  • Understanding their distinct and overlapping effects is crucial for diagnosis.

Purpose of the Study:

  • To investigate the biochemical changes in rats due to lead exposure, iron deficiency, or combined exposure.
  • To identify specific diagnostic markers for each condition.
  • To explore the interrelationship between lead and iron metabolism.

Main Methods:

  • Rats were subjected to controlled lead exposure and/or iron deficiency.
  • Analysis of biochemical parameters in blood, plasma, and urine.

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  • Measurement of glutathione peroxidase, packed cell volume, ceruloplasmin, Fe levels, delta-aminolevulinic acid (ALA) excretion, cholesterol, total Fe binding capacity, ALAD activity, and ZPP levels.

    • Main Results:

    • Both Fe deficiency and Pb intoxication decreased blood glutathione peroxidase, packed cell volume, plasma ceruloplasmin, and plasma Fe levels.
    • Both conditions increased urinary ALA excretion, plasma cholesterol, and total Fe binding capacity.
    • Increased blood ALAD activity with unchanged ZPP specifically indicated Fe deficiency.
    • Pb intoxication showed inhibited ALAD activity and increased ZPP levels.
    • Linear regression revealed increased blood Pb and plasma cholesterol with decreased plasma Fe.

    Conclusions:

    • Specific changes in ALAD and ZPP levels can differentiate between iron deficiency and lead intoxication.
    • Combined exposure reveals overlapping and distinct biochemical alterations.
    • These findings aid in developing diagnostic strategies for co-occurring lead and iron deficiencies.