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Updated: Jul 14, 2026

Dynamic Digital Biomarkers of Motor and Cognitive Function in Parkinson's Disease
Published on: July 24, 2019
Mild Parkinsonian signs: An overview of an emerging concept
Elan D Louis1, David A Bennett
1G.H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, New York, USA. EDL2@columbia.edu
Abstract:
Mild Parkinsonian signs (MPS) include gait and balance changes, rigidity, bradykinesia, and tremor. MPS can occur commonly during the clinical examination of older people who do not have known neurological disease, with prevalence estimates for MPS as a whole ranging from 15% to 95%. MPS are generally progressive and they are coupled with functional difficulties, impaired gait and balance, and increased risks of mild cognitive impairment, dementia, and mortality. The mechanistic basis for these signs is unclear, but is likely to be multifactorial, with possible factors including an age-associated decline in dopaminergic nigrostriatal activity, the early development of neurodegenerative (Lewy body or Alzheimer's type) pathologies in the basal ganglia, or the accumulation of vascular pathology in the brain. It would be valuable to identify those individuals with MPS who are at increased risk for the development of future Alzheimer's disease, full-blown Parkinson's disease, or strokes, and to develop therapeutic strategies to intervene to lessen the likelihood of MPS-related morbidity and mortality.
Insights
Mild Parkinsonian signs (MPS) are common in older adults and indicate increased risks for cognitive decline, dementia, and mortality. Identifying individuals with MPS can help predict future neurological diseases and guide interventions.
Area of Science:
- Neurology
- Geriatrics
- Neuroscience
Background:
- Mild Parkinsonian signs (MPS) are prevalent in older adults without diagnosed neurological conditions, affecting 15-95%.
- These signs, including gait and balance issues, rigidity, bradykinesia, and tremor, are progressive and linked to functional decline.
- MPS are associated with higher risks of mild cognitive impairment, dementia, and mortality.
Purpose of the Study:
- To explore the unclear, multifactorial mechanistic basis of Mild Parkinsonian signs.
- To identify individuals with MPS at higher risk for developing Alzheimer's disease, Parkinson's disease, or stroke.
- To inform the development of therapeutic strategies to mitigate MPS-related morbidity and mortality.
Main Methods:
- This study is a review and synthesis of existing research on Mild Parkinsonian signs.
- Mechanistic hypotheses include age-associated dopaminergic decline, neurodegenerative pathologies (Lewy body, Alzheimer's type), and cerebrovascular pathology.
- Focus is on identifying predictive markers and potential interventions.
Main Results:
- The underlying causes of MPS are multifactorial and not fully understood.
- Potential contributing factors include aging-related changes in the brain's dopamine system, early-stage neurodegenerative diseases, and vascular issues.
- No specific results from a new study are presented, but the need for further research is highlighted.
Conclusions:
- Understanding the mechanisms of MPS is crucial for early detection and intervention.
- Identifying at-risk individuals can lead to personalized strategies to prevent or delay severe neurological outcomes.
- Further research is needed to develop effective treatments for MPS and its associated risks.
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