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Related Experiment Video

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Essential Nutrients and White Matter Hyperintensities: A Two-Sample Mendelian Randomization Study.

Zhengrui Wang1,2, Kailin Xia1, Jiayi Li1,2

  • 1Department of Neurology, Peking University Third Hospital, Beijing 100191, China.

Biomedicines
|April 27, 2024
PubMed
Summary
This summary is machine-generated.

This study found that higher genetically predicted calcium levels may increase the risk of white matter hyperintensities (WMHs), a marker for stroke and dementia. Linoleic acid showed a potential negative association with white matter microstructure measures.

Keywords:
Mendelian randomizationgenesrisk factorswhite matter hyperintensities

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Area of Science:

  • Neuroscience
  • Nutritional Science
  • Genetics

Background:

  • White matter hyperintensities (WMHs) are linked to stroke and dementia.
  • Diffusion tensor imaging (DTI) can detect early white matter microstructural changes.
  • The relationship between specific nutrients and white matter integrity requires further investigation.

Purpose of the Study:

  • To investigate the causal effects of essential nutrients on WMHs and DTI measures (FA, MD) using Mendelian randomization.
  • To explore the potential role of nutrients in white matter health and neurodegenerative disease risk.

Main Methods:

  • Mendelian randomization analysis utilizing single nucleotide polymorphisms (SNPs) as instrumental variables for nutrient exposures.
  • Analysis of a large-scale European Genome-Wide Association Studies pooled dataset for WMHs, FA, and MD outcomes.
  • Inverse variance weighting (IVW) as the primary analysis method, with median and MR-Egger sensitivity analyses.

Main Results:

  • Genetically predicted serum calcium levels showed a positive association with increased WMHs risk (OR=1.081, p=0.035).
  • Plasma linoleic acid levels were negatively associated with fraction anisotropy (FA), a DTI measure (OR=0.776, p=0.032).

Conclusions:

  • Genetically predicted calcium may be a risk factor for WMHs.
  • Linoleic acid may negatively impact white matter microstructure, specifically FA.
  • Findings suggest potential gene-environment interactions for nutrient-based interventions in white matter health.