Assessing the Association Between Lead Pollution and Risk of Alzheimer’s Disease by Integrating Multigenomics

Alzheimer’s disease (AD) is a life-threatening neurodegenerative disease of the elderly. In recent observations, exposure to heavy metals environmental may increase the risk of AD. However, there are few studies on the causal relationship between heavy metal exposure and AD. In this study, we integr...

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Bibliographic Details
Published in:Frontiers in neuroscience 2022-07, Vol.16, p.880105-880105
Main Authors: Li, Chunying, Zhang, Yuwei, Liang, Jiandong, Wu, Changyan, Zou, Xiao
Format: Article
Language:English
Subjects:
Alzheimer’s disease
blood lead
heavy metal pollution
Mendelian randomization
multigenomics
Neuroscience
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Summary:Alzheimer’s disease (AD) is a life-threatening neurodegenerative disease of the elderly. In recent observations, exposure to heavy metals environmental may increase the risk of AD. However, there are few studies on the causal relationship between heavy metal exposure and AD. In this study, we integrated two large-scale summaries of AD genome-wide association study (GWAS) datasets and a blood lead level GWAS dataset and performed the two-sample Mendelian randomization analysis to assess the causality of blood lead level and AD risk. The results showed that there is a significantly positive causality between blood lead level and AD risk both in the inverse-variance weighted (IVW) model and the weighted median estimator (WME) model. An independent additional verification also reached a consistent conclusion. These findings further confirm the conclusions of previous studies and improve the understanding of the relationship between AD pathogenesis and the toxicity of lead in environmental pollution.
ISSN:1662-453X
1662-4548
1662-453X
DOI:10.3389/fnins.2022.880105