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Related Concept Videos

Parkinson's Disease: Treatment01:24

Parkinson's Disease: Treatment

370
Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
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Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
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Related Experiment Video

Updated: Sep 4, 2025

Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo
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Treadmill exercise reduces α-synuclein spreading via PPARα.

Debashis Dutta1, Ramesh Kumar Paidi1, Sumita Raha1

  • 1Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA.

Cell Reports
|July 13, 2022
PubMed
Summary

Regular treadmill exercise reduces alpha-synuclein (α-syn) spreading in the brain and protects neurons. This benefit is mediated by peroxisome proliferator-activated receptor alpha (PPARα) activation, highlighting exercise

Keywords:
CP: NeurosciencePPARαParkinson’s diseaseTFEBdopaminelysosomal functiontreadmillα-synuclein

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Area of Science:

  • Neuroscience
  • Neurodegenerative Diseases
  • Exercise Physiology

Background:

  • Alpha-synuclein (α-syn) aggregation and spreading are hallmarks of neurodegenerative diseases like Parkinson's.
  • Preformed fibril (PFF) seeding in A53T mice models accelerates α-syn pathology and dopaminergic neuron loss.
  • The neuroprotective effects of exercise in α-synucleinopathies require further mechanistic elucidation.

Purpose of the Study:

  • To investigate the impact of treadmill exercise on α-synuclein spreading and dopaminergic neuron survival in A53T mice.
  • To elucidate the molecular mechanisms underlying exercise-induced neuroprotection, focusing on peroxisome proliferator-activated receptor alpha (PPARα) and TFEB.
  • To assess the therapeutic potential of PPARα agonists in mitigating α-synucleinopathy.

Main Methods:

  • Induction of α-synuclein pathology via PFF seeding in young A53T mice.
  • Implementation of regular treadmill exercise protocols in young and aged A53T mice.
  • Assessment of α-synuclein spreading, dopaminergic neuron loss, PPARα activation, TFEB-mediated lysosomal biogenesis, and the effects of fenofibrate (PPARα agonist).

Main Results:

  • Treadmill exercise significantly decreased α-synuclein spreading and protected nigral dopaminergic neurons in PFF-seeded A53T mice.
  • Exercise-induced neuroprotection was associated with increased brain PPARα activation, leading to enhanced lysosomal biogenesis via TFEB.
  • Mice lacking PPARα did not show exercise-induced TFEB activation or α-synucleinopathy mitigation; fenofibrate treatment replicated exercise benefits.

Conclusions:

  • Treadmill exercise confers significant neuroprotection against α-synuclein spreading and dopaminergic neuron loss in a mouse model of α-synucleinopathy.
  • The beneficial effects of exercise are mediated through the PPARα-TFEB pathway, which stimulates lysosomal biogenesis.
  • Targeting PPARα represents a promising therapeutic strategy for reducing α-synuclein pathology in neurodegenerative conditions.