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Inflammation and neurodegeneration in Parkinson's disease

Patrick L McGeer1, Edith G McGeer

  • 1Kinsmen Laboratory of Neurological Research and the Pacific Parkinson's Research Centre, University of British Columbia, 2255 Westbrook Mall, Vancouver, BC, Canada V6T 1Z3. mcgeer@interchange.ubc.ca

Parkinsonism & Related Disorders
|April 28, 2004
PubMed

Insights

Chronic inflammation, indicated by activated microglia and complement proteins, is present in Parkinson's disease (PD) brain regions. This persistent inflammation may contribute to the disease

Area of Science:

  • Neuroscience
  • Immunology
  • Pathology

Background:

  • Parkinson's disease (PD) is characterized by neuroinflammation.
  • Evidence suggests chronic inflammation persists long after initial triggers in PD.

Purpose of the Study:

  • To investigate the role of chronic inflammation in Parkinson's disease pathogenesis.
  • To examine the presence and significance of activated microglia and complement components in PD.

Main Methods:

  • Immunohistochemistry to detect reactive microglia and complement components.
  • Analysis of mRNA levels for complement proteins and microglial markers.

Main Results:

  • Reactive microglia and activated complement components are present in PD brain regions.
  • Elevated mRNA levels for complement proteins and activated microglia markers were observed in PD.
  • Inflammation markers in PD brains were more pronounced than in inflamed arthritic joints.

Conclusions:

  • Chronic inflammation, marked by activated microglia and complement, is a significant feature in Parkinson's disease.
  • This inflammation may play a secondary but important role in PD pathogenesis.
  • Anti-inflammatory agents show potential in mitigating dopaminergic cell death in PD models and reducing human PD risk.

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