BDNF Gene Variant and Reversible Cerebral Vasoconstriction
Author Information
Author(s): Chen Shih-Pin, Fuh Jong-Ling, Wang Shuu-Jiun, Tsai Shih-Jen, Hong Chen-Jee, Yang Albert C.
Primary Institution: Taipei Veterans General Hospital
Hypothesis
The BDNF Val66Met polymorphism might have modulatory effects on RCVS, especially vasoconstriction.
Conclusion
The study found that the BDNF Val66Met polymorphism is linked to the severity of RCVS for the first time.
Supporting Evidence
- Patients with Val allele had higher mean vasoconstriction scores than those with Met/Met homozygosity.
- 38.9% of Val carriers had VMCA values of >120 cm/s, compared to none of the Met/Met homozygotes.
- The study used a split-sample approach to validate findings.
Takeaway
This study looked at how a specific gene might affect a condition that causes severe headaches and blood vessel problems in the brain.
Methodology
Patients with RCVS and controls were genotyped for the BDNF Val66Met polymorphism, and various imaging techniques were used to evaluate cerebral vasoconstriction.
Potential Biases
The study did not check plasma BDNF levels, which could affect the results.
Limitations
The sample size was not large enough for a genetic polymorphism study, which might have led to false negative results.
Participant Demographics
90 Taiwanese patients with RCVS and 180 age- and gender-matched controls.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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