Causal associations between hypertension and abnormal brain cortical structures: Insights from a bidirectional Mendelian randomization study
2024

Hypertension and Brain Structure Changes

Sample size: 484598 publication 10 minutes Evidence: high

Author Information

Author(s): Fang Tianxiang, Wang Xizhi, Wang Yingsong, Zheng Xiaoya, Huangfu Ning

Primary Institution: Ningbo University, China

Hypothesis

Is there a causal relationship between hypertension and abnormal brain cortical structures?

Conclusion

Hypertension is causally linked to changes in specific brain cortical structures, supporting the heart-brain axis theory.

Supporting Evidence

  • Hypertension was associated with a decline in total brain cortical thickness.
  • Alterations in certain cortical regions influence the incidence of hypertension.
  • Genetically predicted hypertension decreases the risk of hypertension through changes in brain structure.

Takeaway

High blood pressure can change the way our brain looks, and some parts of the brain can also affect blood pressure.

Methodology

A bidirectional Mendelian randomization study using genome-wide association study summary statistics.

Potential Biases

Potential confounding factors and reverse causality bias in observational studies.

Limitations

The study population was primarily of European descent, which may limit generalizability, and the specific mechanisms remain unclear.

Participant Demographics

Primarily European ancestry.

Statistical Information

P-Value

0.045

Confidence Interval

95% CI, -0.0610 to -0.0007

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1016/j.ijcrp.2024.200354

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