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Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
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Diabetic Retinopathy and Brain Structure, Cognition Function, and Dementia: A Bidirectional Mendelian Randomization
Yin-He Chai1, Yi-Peng Han1, Jin-Yan Zhang1
1Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Journal of Alzheimer'S Disease : JAD
|January 13, 2024
Summary
Diabetic retinopathy (DR) is linked to vascular dementia. Preventing cognitive decline may reduce DR risk, suggesting a two-way relationship between eye health and brain function in diabetes.
Area of Science:
- Ophthalmology
- Neurology
- Endocrinology
Background:
- Hyperglycemia is a risk factor for cognitive impairment and Alzheimer's disease.
- Diabetic retinopathy (DR) is a known risk factor for dementia in diabetic patients.
Purpose of the Study:
- To investigate causal links between DR, brain structure, cognitive function, and dementia.
- To explore the bidirectional relationship between DR and cognitive outcomes.
Main Methods:
- Bidirectional two-sample Mendelian randomization was employed.
- Inverse-variance weighted method was used to analyze genetic associations.
Main Results:
- DR showed an association with vascular dementia (OR=1.68).
- Dementia increased the risk of non-proliferative DR (NPDR) (OR=1.76).
- Better cognitive performance was linked to reduced NPDR risk (OR=0.85). No link was found between DR and brain structure.
Conclusions:
- DR is associated with vascular dementia.
- Cognitive function and dementia risk reciprocally affect NPDR.
- Dementia prevention may benefit DR management.
