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Related Experiment Video

Updated: Apr 4, 2026

Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells
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Zinc-induced copper deficiency.

H N Hoffman1, R L Phyliky, C R Fleming

  • 1Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota.

Gastroenterology
|February 1, 1988
PubMed
Summary
This summary is machine-generated.

Excessive zinc intake caused copper deficiency anemia and low white blood cell counts. Intravenous copper corrected these hematologic abnormalities, suggesting zinc blocks copper absorption.

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Area of Science:

  • Hematology
  • Nutritional Science
  • Toxicology

Background:

  • Excessive zinc supplementation can lead to adverse health effects.
  • Copper deficiency can manifest with hematological abnormalities similar to iron deficiency.

Observation:

  • A patient presented with hypochromic-microcytic anemia, leukopenia, and neutropenia.
  • Initial iron therapy was ineffective in resolving the anemia.
  • Oral copper supplementation also failed to correct the hematological issues.

Findings:

  • The patient's symptoms resolved only after intravenous administration of cupric chloride.
  • This suggests a persistent blockage of copper absorption due to excessive zinc.
  • Serum copper and ceruloplasmin levels normalized post-intravenous copper treatment.

Implications:

  • High-dose oral zinc intake can induce significant copper deficiency.
  • Intravenous copper administration may be necessary to overcome zinc-induced copper malabsorption.
  • Clinical awareness of zinc-copper interactions is crucial for preventing and treating related deficiencies.