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Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model
Published on: August 11, 2023
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Mediating factors in the association between educational attainment and stroke: A mendelian randomization study
Nuo Xu1,2, Yiwen Qiu1,2, Diliyaer Ainiwan1,2
1Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China.
SSM - Population Health
|March 17, 2025
Summary
Higher education protects against stroke. Cardiometabolic risk factors like diabetes, hypertension, and smoking partially explain this protective effect, particularly for ischemic stroke subtypes. Low education individuals should manage these risks.
Area of Science:
- Epidemiology
- Genetics
- Cardiovascular Disease Research
Background:
- Stroke is a leading cause of disability and mortality.
- Lower educational attainment is linked to increased stroke risk.
- The mediating pathways for this association remain unclear.
Purpose of the Study:
- To investigate the causal association between educational attainment and stroke risk using Mendelian randomization.
- To assess the role of cardiometabolic risk factors in mediating this association.
Main Methods:
- Two-sample Mendelian randomization (MR) analyses utilizing genome-wide association study (GWAS) data.
- Mediation analyses to quantify the effect of seven cardiometabolic risk factors.
Main Results:
- Genetically predicted higher educational attainment was associated with reduced risk of all stroke types, including ischemic and hemorrhagic subtypes.
- Type 2 diabetes, hypertension, hyperlipidemia, and smoking partially mediated the effect of education on ischemic stroke.
- Mediators explained up to 38.73% of the association for large artery stroke.
Conclusions:
- Higher educational attainment confers a protective effect against stroke.
- Cardiometabolic risk factors partially mediate the relationship between education and stroke.
- Individuals with lower educational attainment should prioritize management of cardiometabolic risk factors to prevent stroke.
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