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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
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White matter changes in Parkinson's disease.

Kai Yang1, Zhengqi Wu2, Jie Long2

  • 1School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, People's Republic of China. kyang43@whut.edu.cn.

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White matter changes, particularly involving myelin and oligodendrocytes, are increasingly recognized as significant in Parkinson's disease (PD) pathology. These abnormalities correlate with PD symptoms and may offer new therapeutic targets.

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Area of Science:

  • Neuroscience
  • Neurology
  • Pathology

Background:

  • Parkinson's disease (PD) is a prevalent neurodegenerative disorder, second only to Alzheimer's disease (AD).
  • PD is classically defined by dopaminergic neuron loss in the substantia nigra pars compacta and Lewy body formation.
  • While traditionally viewed as a gray matter (GM) disease, recent research highlights the role of white matter (WM) alterations in PD.

Purpose of the Study:

  • To review magnetic resonance imaging (MRI) evidence of WM abnormalities in PD.
  • To explore correlations between WM changes and specific PD symptoms.
  • To summarize molecular studies on oligodendrocyte (OLs)/myelin alterations in PD.

Main Methods:

  • Review of magnetic resonance imaging (MRI) studies investigating white matter in Parkinson's disease.
  • Analysis of transcriptome and genome-wide studies examining oligodendrocyte and myelin changes in PD.
  • Correlation analysis between white matter alterations and clinical Parkinson's disease symptoms.

Main Results:

  • MRI evidence indicates widespread white matter abnormalities in individuals with Parkinson's disease.
  • Specific white matter changes are associated with distinct motor and non-motor symptoms of PD.
  • Transcriptome and genome studies reveal alterations in oligodendrocytes and myelin integrity in PD.

Conclusions:

  • White matter abnormalities, driven by changes in myelin and oligodendrocytes, are integral to Parkinson's disease pathology.
  • These myelin/oligodendrocyte alterations represent potential therapeutic targets for Parkinson's disease treatment.
  • Understanding WM changes provides a more comprehensive view of PD pathogenesis beyond gray matter.