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Quantitation of Endothelial Cell Adhesiveness In Vitro
Published on: June 18, 2015
Soluble endothelial cell-selective adhesion molecule and incident cardiovascular events in a multiethnic population
Hao-Yu Ren1, Amit Khera2, James A de Lemos2
1Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX.
Insights
Soluble endothelial cell-selective adhesion molecule (sESAM) predicts future atherosclerotic cardiovascular disease (ASCVD) events. Unlike other adhesion molecules, sESAM shows a significant association with incident ASCVD, highlighting its potential as a biomarker.
Area of Science:
- Cardiovascular Medicine
- Biomarkers
- Atherosclerosis Research
Background:
- Cell adhesion molecules regulate atherosclerotic plaque development.
- Soluble intercellular adhesion molecule (sICAM-1) and vascular cell adhesion molecule (sVCAM-1) have conflicting associations with atherosclerotic cardiovascular disease (ASCVD).
- Endothelial cell-selective adhesion molecule (ESAM) is expressed in platelets and endothelial cells; soluble ESAM (sESAM) is linked to subclinical atherosclerosis.
Purpose of the Study:
- To investigate the association between soluble endothelial cell-selective adhesion molecule (sESAM) and incident atherosclerotic cardiovascular disease (ASCVD).
- To compare the predictive value of sESAM with sICAM-1 and sVCAM-1 for ASCVD events.
Main Methods:
- Measured sESAM, sICAM-1, and sVCAM-1 in 2,442 participants without prevalent CVD (Dallas Heart Study).
- Followed participants for incident ASCVD events (myocardial infarction, stroke, revascularization, CV death) over 10.4 years.
- Utilized Cox proportional hazards models and assessed model discrimination and reclassification.
Main Results:
- Elevated sESAM levels were independently associated with a higher risk of incident ASCVD (HR Q4 vs Q1: 2.7).
- This association remained significant after adjusting for traditional risk factors, renal function, sICAM-1, sVCAM-1, and coronary calcium.
- sESAM addition improved risk prediction models for ASCVD (P = .009 for c-index, P = .001 for IDI, NRI = 0.42).
- Neither sICAM-1 nor sVCAM-1 showed independent associations with incident ASCVD.
Conclusions:
- Soluble endothelial cell-selective adhesion molecule (sESAM) levels are associated with incident atherosclerotic cardiovascular disease (ASCVD).
- sESAM demonstrates predictive value for ASCVD events, independent of traditional risk factors.
- Further research is needed to elucidate the specific role of sESAM in ASCVD pathogenesis.
Background:
Cell adhesion molecules are key regulators of atherosclerotic plaque development, but circulating levels of soluble fragments, such as intercellular adhesion molecule (sICAM-1) and vascular cell adhesion molecule (sVCAM-1), have yielded conflicting associations with atherosclerotic cardiovascular disease (ASCVD). Endothelial cell-selective adhesion molecule (ESAM) is expressed exclusively in platelets and endothelial cells, and soluble ESAM (sESAM) levels have been associated with prevalent subclinical atherosclerosis. We therefore hypothesized that sESAM would be associated with incident ASCVD.
Methods:
sESAM, sICAM-1, and sVCAM-1 were measured in 2,442 participants without CVD in the Dallas Heart Study, a probability-based population sample aged 30-65 years enrolled between 2000 and 2002. ASCVD was defined as first myocardial infarction, stroke, coronary revascularization, or CV death. A total of 162 ASCVD events were analyzed over 10.4 years.
Results:
Increasing sESAM was associated with ASCVD, independent of risk factors (HR Q4 vs Q1: 2.7, 95% CI 1.6-4.6). Serial adjustment for renal function, sICAM-1, VCAM-1, and prevalent coronary calcium did not attenuate these associations. Continuous ESAM demonstrated similar findings (HR 1.31, 95% CI 1.2-1.4). Addition of sESAM to traditional risk factors improved discrimination and reclassification (delta c-index: P = .009; integrated-discrimination-improvement index P = .001; net reclassification index = 0.42, 95% CI 0.15-0.68). Neither sICAM-1 nor sVCAM-1 was independently associated with ASCVD.
Conclusions:
sESAM but not sICAM-1 or sVCAM-1 levels are associated with incident ASCVD. Further studies are warranted to investigate the role of sESAM in ASCVD.
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