Cardiovascular Risk and Neurodegenerative Disorders in Parkinson's Disease

Parkinson’s disease (PD) is increasingly recognised not only as a movement disorder but also as a condition with substantial cardiovascular comorbidity. Epidemiological and mechanistic studies have revealed that patients with PD face an elevated risk of ischaemic stroke, coronary artery disease and other vascular events. Underlying mechanisms include cardiac autonomic dysfunction arising from neurodegeneration of brainstem centres, systemic inflammation driving atherosclerotic changes, and shared genetic predispositions. These interactions underscore the need for integrated screening and preventative measures. Early identification of high-risk individuals may enable tailored interventions—from lifestyle modification to pharmacological prophylaxis—and has global significance given ageing populations and the growing burden of both neurodegenerative and cardiovascular disease.

Research from Nature Portfolio

A Mendelian randomisation analysis using genome-wide association data has established a likely causal link between Parkinson’s disease and increased risk of coronary artery disease and stroke. By selecting genetic variants associated with PD as instrumental variables and applying an inverse variance weighted approach, investigators demonstrated modest but significant odds ratios for coronary artery disease (approximately 1.06) and for stroke subtypes including ischaemic and cardioembolic stroke (approximately 1.04–1.08). Sensitivity analyses, including weighted median and MR-Egger methods, affirmed the robustness of these findings and supported the concept that genetic liability to PD contributes to vascular risk.

Cardiovascular Risk and Neurodegenerative Disorders in Parkinson's Disease publication trend

The graph below shows the total number of articles in cardiovascular risk and neurodegenerative disorders in parkinson's disease across all publications each year (not limited to Nature Index journals).

Technical terms

Mendelian randomization: A method using genetic variants as unconfounded proxies to infer causal effects of an exposure on an outcome.

Genome-wide association study: An approach that scans the genome for common genetic variants associated with a particular trait or disease.

Inverse variance weighted approach: A statistical technique that combines summary estimates from multiple genetic variants, weighting each by the inverse of its variance to improve precision.

Hazard ratio: A measure used in survival analysis to compare the instantaneous risk of an event occurring in two groups over time.

Propensity score matching: A method to reduce confounding in observational studies by matching subjects on the probability of exposure given baseline characteristics.

Cardiac autonomic dysfunction: Impairment of the autonomic nervous system’s regulation of heart rate and blood pressure, often observed in neurodegenerative disorders.

References

1. Relationship between Parkinson’s disease and cardio-cerebrovascular diseases: a Mendelian randomized study. Scientific Reports (2023).
2. Cardiovascular/Stroke Risk Stratification in Parkinson’s Disease Patients Using Atherosclerosis Pathway and Artificial Intelligence Paradigm: A Systematic Review. Metabolites (2022).
3. Parkinson’s Disease Is Related to an Increased Risk of Ischemic Stroke—A Population-Based Propensity Score-Matched Follow-Up Study. PLOS ONE (2013).
4. Association between Parkinson's disease and the risk of adverse cardiovascular events: a systematic review and meta-analysis. Frontiers in Cardiovascular Medicine (2023).