Genetic Variants Linked to Blood Pressure in Amish and Framingham Studies
Author Information
Author(s): Patrick F. McArdle, Sue Rutherford, Braxton D. Mitchell, Coleen M. Damcott, Ying Wang, Vasan Ramachandran, Sandy Ott, Yen-Pei C. Chang, Daniel Levy, Nanette Steinle
Primary Institution: University of Maryland School of Medicine
Hypothesis
Are genetic variations in nicotinic acetylcholine receptor subunits associated with blood pressure regulation?
Conclusion
The study found that a specific genetic variant in the CHRNG gene is associated with higher systolic blood pressure in both the Amish and Framingham populations.
Supporting Evidence
- The study identified 20 genetic variants in the nicotinic acetylcholine receptor genes.
- The minor allele of SNP rs2099489 was associated with higher systolic blood pressure.
- The findings were replicated in the Framingham Heart Study population.
Takeaway
Scientists looked at genes in some people to see if they affect blood pressure. They found one gene that seems to make blood pressure higher.
Methodology
Sequenced three nicotinic acetylcholine receptor subunits in Amish subjects, identified variants, and performed association analysis in both Amish and Framingham populations.
Potential Biases
Potential for population stratification affecting results, though the homogeneity of the Amish population reduces this risk.
Limitations
The study may not be generalizable beyond the Amish and Framingham populations due to genetic and environmental differences.
Participant Demographics
The primary sample consisted of Old Order Amish individuals, with a mean age of 49.4 years and low use of anti-hypertensive medication.
Statistical Information
P-Value
0.0009
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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