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Updated: May 3, 2026
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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
Published on: January 7, 2014
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The pathomechanisms underlying Parkinson's disease.
1Institute of Clinical Neurobiology, Kenyongasse 18, A-1070 Vienna, Austria.
Expert Review of Neurotherapeutics
|January 30, 2014
Summary
Parkinson's disease (PD) involves misfolded alpha-synuclein (αSyn) protein spreading throughout the nervous system. This proteinopathy causes both motor symptoms and non-motor deficits, impacting multiple organs.
Area of Science:
- Neuroscience
- Pathology
- Neurology
Background:
- Parkinson's disease (PD) is a frequent neurodegenerative disorder characterized by progressive multi-organ proteinopathy.
- It is caused by misfolded alpha-synuclein (αSyn), leading to motor and non-motor deficits via synaptic and neuronal loss.
Purpose of the Study:
- To review the pathomechanisms underlying cardinal motor abnormalities and non-motor manifestations in PD.
- To explore the role of αSyn aggregation in presynaptic terminals as a key pathogenic event.
Main Methods:
- Review of recent studies on PD pathogenesis.
- Analysis of the functional organization of basal ganglia and related circuits.
- Examination of morphological and pathophysiological lesions in the nervous system.
Main Results:
- Motor deficits (rigidity, akinesia, tremor, postural instability) are linked to dopaminergic nigrostriatal system loss.
- Non-motor alterations (hyposmia, autonomic dysfunction) correlate with widespread αSyn distribution.
- αSyn aggregation in presynaptic terminals precedes Lewy body formation and is crucial in PD pathogenesis.
Conclusions:
- Understanding PD requires insights into αSyn's role, basal ganglia circuitry, and nervous system lesions.
- The study reviews mechanisms driving both motor and non-motor symptoms in Parkinson's disease.
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