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Related Experiment Video

Updated: Aug 6, 2025

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
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Association between brain structures and migraine: A bidirectional Mendelian randomization study.

Xiaoming Guo1,2, Dingkun Wang2, Caidi Ying1

  • 1Department of Neurosurgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.

Frontiers in Neuroscience
|March 20, 2023
PubMed
Summary
This summary is machine-generated.

Migraine risk may be causally linked to reduced brain surface area and hippocampal volume. This study used Mendelian randomization to investigate genetic links between brain structures and migraine. Further research is needed.

Keywords:
Mendelian randomizationNeuroImagebrain structurecortexmigraine

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Area of Science:

  • Neuroscience
  • Genetics
  • Epidemiology

Background:

  • Clinical and neuroimaging studies suggest a link between migraine and brain structural alterations.
  • The causal nature of this association, or if it's due to reverse causality, remains unclear.

Purpose of the Study:

  • To investigate the causal relationship between specific brain structures and migraine risk using a bidirectional Mendelian randomization analysis.
  • To determine if observed associations are genetic or potentially confounded by reverse causality.

Main Methods:

  • A bidirectional Mendelian randomization analysis was performed.
  • Summary-level data from large genome-wide association studies (GWAS) were utilized for brain structures (cortical surface area, gray matter volume, white matter hyperintensities, hippocampal volume) and migraine.
  • Independent genetic variants served as instrumental variables.

Main Results:

  • Suggestive evidence indicated that decreased cortical surface area is associated with higher migraine risk (OR = 0.85).
  • Decreased hippocampal volume also showed a suggestive association with increased migraine risk (OR = 0.74).
  • No significant causal associations were found for gray matter volume, cortical thickness, or white matter hyperintensities with migraine risk.

Conclusions:

  • This study provides suggestive evidence for a causal association between reduced brain surface area and hippocampal volume with an increased risk of migraine.
  • The findings contribute to understanding the neurobiological underpinnings of migraine.