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Hyperferritinemia in autoimmunity.

Gisele Zandman-Goddard1, Yehuda Shoenfeld

  • 1Department of Medicine C, Wolfson Medical Center, Holon, Israel.

The Israel Medical Association Journal : IMAJ
|February 28, 2008
PubMed
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Ferritin, a key iron regulator, is controlled by cytokines and hormones. Dysregulation of ferritin and iron homeostasis contributes to various diseases, including neurodegenerative disorders and inflammatory conditions.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Immunology

Background:

  • Iron and oxygen metabolism are critical biological processes regulated by complex genetic and molecular mechanisms.
  • Ferritin, the primary intracellular iron-storage protein, plays a central role in maintaining iron homeostasis.
  • Ferritin synthesis is intricately regulated by cytokines, hormones, and cellular signals.

Purpose of the Study:

  • To elucidate the multifaceted regulation of ferritin synthesis and its role in biological processes.
  • To explore the immunological functions of ferritin.
  • To investigate the association of ferritin and iron homeostasis with various human diseases.

Main Methods:

  • Analysis of gene expression regulation (transcriptional, post-transcriptional, translational) of ferritin.

Related Experiment Videos

  • Examination of cytokine-mediated signaling pathways impacting ferritin.
  • Review of literature linking ferritin and iron homeostasis to disease pathogenesis.

    • Main Results:

    • Cytokines (e.g., tumor necrosis factor-alpha, interleukin-1alpha) modulate ferritin synthesis at multiple levels.
    • Ferritin exhibits immunomodulatory functions, including effects on lymphocytes and phagocytes.
    • Thyroid hormone, insulin, and insulin growth factor-1 influence ferritin mRNA levels.
    • Ferritin dysregulation and iron imbalance are implicated in hemochromatosis, neurodegenerative diseases (Parkinson's, Alzheimer's), and atherosclerosis.
    • Genetic mutations in ferritin cause hereditary hyperferritinemia-cataract syndrome and neuroferritinopathy.
    • Elevated ferritin (hyperferritinemia) is linked to inflammation, infections, malignancies, and autoimmune diseases like systemic lupus erythematosus.

    Conclusions:

    • Ferritin regulation is complex, involving cytokines and hormones, and is crucial for iron homeostasis.
    • Disruptions in ferritin and iron metabolism are associated with a wide spectrum of diseases, from genetic disorders to neurodegeneration and inflammation.
    • Further research is needed to fully understand the mechanistic roles of hyperferritinemia in certain inflammatory and neurological conditions.