The Study
Osteoprotegerin, Pericytes and Bone-Like Vascular Calcification Are Associated with Carotid Plaque Stability
This study looked at people who had surgery to remove plaque from their neck arteries and found that those without symptoms had more of certain proteins and bone-like stuff in their plaque. But it didn’t change anything to see if that caused fewer strokes — it just noticed a pattern.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
Some artery plaques turn into bone-like tissue, which makes them stronger and less likely to break open and cause strokes.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 535 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — higher bone-like tissue and OPG levels were linked to plaques that didn't cause strokes, suggesting they're more stable.
- 2Asymptomatic plaques had bone-like tissue in 18.4% of cases (none in symptomatic ones); plasma OPG was 3.2 ng/mL vs.
- 32.5 ng/mL; pericytes were 19% vs.
- 43.8% of tissue area.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
PLoS ONE
Year
2014
Authors
J. Davaine, T. Quillard, R. Brion, Olivier Lapérine, B. Guyomarch, T. Merlini, M. Chatelais, Florian Guilbaud, M. Brennan, C. Charrier, D. Heymann, Y. Gouëffic, M. Heymann
Related Content
Claims (6)
Calcium buildup in artery plaques makes them less likely to break open.
Human vascular pericytes release osteoprotegerin, which blocks the formation of bone-resorbing cells from CD14+ monocytes, and this blocking effect is eliminated when osteoprotegerin is neutralized, demonstrating a direct role in controlling vascular calcification by suppressing bone resorption.
Higher levels of osteoprotegerin in the blood are associated with higher levels of osteoprotegerin inside carotid plaques and the presence of bone-like tissue in those plaques, suggesting that blood osteoprotegerin levels indicate the stability of carotid plaques.
People with asymptomatic carotid artery plaque have higher levels of osteoprotegerin in their blood and plaque tissue than those with symptomatic plaque, and this difference is statistically significant.
Carotid plaques containing mature, organized bone-like tissue are found much more often in people who have not had a stroke than in those who have, suggesting that this type of calcification is linked to lower stroke risk.
Pericytes are found in higher numbers in stable carotid plaques than in unstable ones. In laboratory conditions, these cells produce osteoprotegerin and transform into bone-like cells, which correlates with reduced plaque breakdown through calcification and suppression of bone-resorbing cells.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.