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Parkinson's disease and iron.

Hideki Mochizuki1, Chi-Jing Choong2, Kousuke Baba2

  • 1Department of Neurology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. hmochizuki@neurol.med.osaka-u.ac.jp.

Journal of Neural Transmission (Vienna, Austria : 1996)
|February 7, 2020
PubMed
Summary

Iron accumulation in the brain is linked to Parkinson's disease (PD). This review explores iron's role in PD pathogenesis, examining its interaction with key proteins and potential therapeutic strategies using iron chelators.

Keywords:
IronIron chelatorMPTPPLA2G6Parkinson's diseaseα-synuclein

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Pathology

Background:

  • Parkinson's disease (PD) pathogenesis involves selective dopaminergic neuron loss in the substantia nigra.
  • Elevated iron levels are consistently observed in the substantia nigra of PD patients.
  • The precise role of iron deposition—whether causal or consequential—in PD remains debated.

Purpose of the Study:

  • To review the current understanding of iron's role in Parkinson's disease.
  • To investigate the interaction between iron, neuromelanin, and alpha-synuclein in PD.
  • To explore iron deposition in animal models and human PD patients, and evaluate iron chelator therapies.

Main Methods:

  • Literature review of existing findings on iron in PD.
  • Analysis of studies on iron-neuromelanin and iron-alpha-synuclein interactions.
  • Examination of data from experimental animal models and human PD patient cohorts (sporadic and familial).

Main Results:

  • Iron interacts with neuromelanin and alpha-synuclein, potentially contributing to neurodegeneration.
  • Iron deposition is a consistent finding in experimental PD models and human PD brains.
  • Iron chelators are being investigated as a potential therapeutic strategy for PD.

Conclusions:

  • Iron dysregulation is strongly implicated in Parkinson's disease.
  • Further research is needed to clarify whether iron accumulation is a cause or consequence of PD.
  • Targeting iron levels with chelators may offer a novel therapeutic avenue for PD.