Parkinson's disease cerebrovascular reactivity pattern: A feasibility study.
Harm Jan van der Horn1, Andrei A Vakhtin1, Kayla Julio1
1Department of Translational Neuroscience, The Mind Research Network, Albuquerque, NM, USA.
Summary
Cerebrovascular dysfunction is key in Parkinson's disease (PD). A new study identified a unique PD cerebrovascular reactivity pattern (PD-CVRP) using MRI, potentially serving as a future biomarker for Parkinson's disease.
Area of Science:
- Neuroscience
- Medical Imaging
- Cardiovascular Research
Background:
- Cerebrovascular dysfunction is increasingly recognized in Parkinson's disease (PD) pathophysiology.
- Understanding these vascular changes is crucial for developing effective PD treatments.
Purpose of the Study:
- To investigate cerebrovascular reactivity (CVR) in Parkinson's disease patients using BOLD MRI.
- To identify a multivariate pattern of CVR specific to PD.
- To explore the potential of CVR patterns as biomarkers for PD.
Main Methods:
- Feasibility study involving 26 PD patients and 16 healthy controls (HC).
- Blood-oxygen-level-dependent (BOLD) MRI used to measure CVR during hypercapnia.
- Scaled sub-profile model principal component analysis (SSM-PCA) applied to CVR amplitude and latency maps.
Main Results:
- A distinct pattern, the PD CVR pattern (PD-CVRP), was identified based on CVR latency.
- PD-CVRP showed increased latency in basal ganglia, sensorimotor cortex, thalamus, and visual cortex.
- Decreased latency was observed in cerebral white matter in PD patients compared to HC.
Conclusions:
- The identified PD-CVRP underscores the role of cerebrovascular dysfunction in Parkinson's disease.
- This pattern may serve as a potential imaging biomarker for PD in future research and clinical practice.
- Further studies are needed to validate these findings and explore clinical associations.
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