An Updated Meta-Analysis of Endothelial Nitric Oxide Synthase Gene: Three Well-Characterized Polymorphisms with Hypertension
2011

Meta-Analysis of eNOS Gene Variants and Hypertension

Sample size: 19284 publication 10 minutes Evidence: moderate

Author Information

Author(s): Niu Wenquan, Qi Yue

Primary Institution: State Key Laboratory of Medical Genomics at Ruijin Hospital, Shanghai Jiao Tong University School of Medicine

Hypothesis

This study aims to meta-analyze three eNOS polymorphisms in association with hypertension across different ethnic populations.

Conclusion

The study confirms the role of eNOS G894T and 4b/a polymorphisms in hypertension for Asian populations and T−786C polymorphism for Whites.

Supporting Evidence

  • The G894T polymorphism showed a 16% increased risk for hypertension across all populations.
  • In Asians, the G894T polymorphism was associated with a 32% increased risk for hypertension.
  • The 4b/a polymorphism was linked to a 29% increased risk for hypertension in all populations.

Takeaway

This study looked at how certain genes might affect blood pressure in different groups of people, finding that some gene variations can increase the risk of high blood pressure.

Methodology

Data were analyzed using Stata software with a random-effects model, and publication bias was assessed using Egger's test.

Potential Biases

There was a high probability of publication bias, particularly for the G894T polymorphism.

Limitations

The study is limited by the cross-sectional design of included studies and the lack of data on important intermediate phenotypes.

Participant Demographics

The study included various ethnic populations, specifically focusing on Asian and White groups.

Statistical Information

P-Value

0.001

Confidence Interval

1.07–1.27

Statistical Significance

p<0.0005

Digital Object Identifier (DOI)

10.1371/journal.pone.0024266

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