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Iron metabolism and toxicity.

G Papanikolaou1, K Pantopoulos

  • 1First Department of Internal Medicine, National and Kapodistrian University of Athens, School of Medicine, Laikon General Hospital, Athens 11527, Greece.

Toxicology and Applied Pharmacology
|January 5, 2005
PubMed
Summary

Iron is vital but toxic in excess, requiring tight control for cellular health. Imbalances cause tissue damage and organ failure, and may link to cancer development.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Pathology

Background:

  • Iron is an essential nutrient with crucial roles in biological systems.
  • Excess iron leads to toxicity through radical generation, damaging cellular components.
  • Maintaining iron homeostasis is critical for preventing cellular and tissue injury.

Purpose of the Study:

  • To review the fundamental biology and toxicity of iron.
  • To explain the principles of cellular and systemic iron homeostasis.
  • To discuss iron overload disorders and their link to cancer.

Main Methods:

  • Literature review of iron biology and homeostasis.
  • Analysis of iron toxicity mechanisms.
  • Overview of iron overload conditions and associated pathologies.

Main Results:

  • Iron's dual role as essential nutrient and potent toxin.
  • Mechanisms of iron-induced oxidative stress and cellular damage.
  • Association between iron overload, tissue damage, and increased cancer risk.

Conclusions:

  • Tight regulation of iron homeostasis is essential for health.
  • Iron overload disorders manifest significant tissue damage and organ failure.
  • Pathological iron accumulation is implicated in malignant transformation, particularly liver cancer.

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