Two-sample Mendelian randomization study of gut microbiota and inflammatory proteins: Predictive, preventive, and...

Area of Science:

• Genetics and Microbiome Research
• Neuroscience
• Immunology

Background:

• The human gut microbiota plays a role in migraine pathogenesis, potentially through inflammatory pathways.
• Identifying specific gut bacteria and inflammatory proteins linked to migraines is crucial for developing targeted therapies.

Purpose of the Study:

• To investigate the causal relationship between human gut microbiota and migraine.
• To identify specific inflammatory proteins mediating the effect of gut microbiota on migraine risk.

Main Methods:

• A two-sample Mendelian randomization study using genome-wide association study data.
• Analysis of 473 human gut microbiota taxa and 91 circulating inflammatory proteins.
• Two-step Mendelian randomization mediation analysis to quantify mediating effects.

Main Results:

• Thirty-seven bacterial genera were associated with migraine risk (18 negatively, 19 positively).
• Eight inflammatory proteins were linked to increased migraine risk.
• Four gut microbiota altered inflammatory protein levels, and five influenced migraine via these proteins, including Actinobacteria and Lawsonibacter sp002161175.

Conclusions:

• Specific gut microbiota alterations are implicated in migraine pathogenesis.
• Inflammatory proteins mediate the link between gut microbiota and migraine.
• Targeting gut microbiota offers a promising avenue for personalized migraine management.