Genetic Analysis of Blood Pressure Changes Over Time
Author Information
Author(s): Palmer Lyle J, Scurrah Katrina J, Tobin Martin, Patel Sanjay R, Celedon Juan C, Burton Paul R, Weiss Scott T
Primary Institution: Channing Laboratory, Brigham & Women's Hospital and Harvard Medical School
Hypothesis
Does genetic variation influence the change in systolic blood pressure (SBP) over time?
Conclusion
The study found that genetic factors significantly influence both systolic blood pressure levels and the rate of change in blood pressure with age.
Supporting Evidence
- Additive genetic effects accounted for ~9.2% of the variance in the rate of change of SBP with age.
- Additive genetic effects accounted for ~43.9% of the variance in SBP at the mean age.
- Linkage results suggested major loci regulating change in SBP may localize to chromosomes 2, 3, 4, 6, 10, 11, 17, and 19.
- Linkage results suggested major loci regulating level of SBP may localize to chromosomes 3, 8, and 14.
Takeaway
This study looked at how our genes affect blood pressure changes as we get older, finding that genetics play a big role.
Methodology
The study used data from the Framingham Heart Study and applied generalized linear mixed models with Gibbs sampling to analyze blood pressure changes.
Potential Biases
Potential biases may arise from the treatment adjustments made for blood pressure.
Limitations
The study did not include certain intermediate phenotypes that could influence SBP, and the model's complexity may limit generalizability.
Participant Demographics
The study included 4692 individuals from 330 pedigrees, with a mix of sexes and ages.
Statistical Information
Confidence Interval
95% credible intervals were reported for various parameters.
Digital Object Identifier (DOI)
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