Does High C-reactive Protein Concentration Increase Atherosclerosis? The Whitehall II Study
Author Information
Author(s): Kivimäki Mika, Lawlor Debbie A., Davey Smith George, Kumari Meena, Donald Ann, Britton Annie, Casas Juan P., Shah Tina, Brunner Eric, Timpson Nicholas J., Halcox Julian P. J., Miller Michelle A., Humphries Steve E., Deanfield John, Marmot Michael G., Hingorani Aroon D.
Primary Institution: University College London
Hypothesis
Does high C-reactive protein (CRP) concentration have a causal role in atherosclerosis?
Conclusion
The study suggests that the association of CRP with carotid atheroma may not be causal.
Supporting Evidence
- CRP levels were associated with CIMT in age and sex adjusted analyses.
- Adjustment for confounding factors attenuated the association of CRP with CIMT to the null.
- Genetic variants in the CRP gene were not associated with CIMT.
Takeaway
This study looked at whether high levels of a protein called CRP cause heart problems, but it found that CRP might just be a sign of other issues instead.
Methodology
The study used genetic analysis and multivariable regression to assess the relationship between CRP levels and carotid intima-media thickness (CIMT) in a cohort of British civil servants.
Potential Biases
Potential confounding factors such as obesity, smoking, and socioeconomic status may influence the association between CRP and CIMT.
Limitations
The instrumental variables analysis provided wide confidence intervals, indicating that larger samples are needed for more precise estimates.
Participant Demographics
Participants were mostly men aged 50-74, with a mean age of 61 years.
Statistical Information
P-Value
p=0.0004
Confidence Interval
95% CI not specified
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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