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Microfluidics in Assessing Platelet Function
Published on: November 8, 2024
Comparison of Factors Associated with Inflammation, Thrombosis, and Platelet Reactivity as well as Turnover between
Lior Fortis1,2, Ella Yehud1,2, Ziv Sevilya3
1Department of Cardiology, Assuta Ashdod University Hospital, Ashdod, Israel.
Insights
Patients with a high CHA2DS2-VASc score in sinus rhythm show increased inflammation and soluble P-selectin, suggesting a link to higher cardiovascular event rates. This highlights potential biomarkers for risk stratification.
Area of Science:
- Cardiovascular Medicine
- Thrombosis Research
- Inflammation Biology
Background:
- The CHA2DS2-VASc score predicts thromboembolism and mortality in atrial fibrillation (AF) and sinus rhythm (SR).
- Understanding risk factors beyond traditional scoring is crucial for cardiovascular event prevention.
Purpose of the Study:
- To compare inflammation, thrombosis, and platelet markers in SR patients with high versus low CHA2DS2-VASc scores.
- To identify specific biological factors associated with elevated cardiovascular risk in SR.
Main Methods:
- Consecutive SR patients without AF history were enrolled.
- Blood samples analyzed for neutrophil-to-lymphocyte ratio (NLR), C-reactive protein (CRP), immature platelet fraction (IPF), CD40 ligand, soluble P-selectin (sP-selectin), and E-selectin.
- Measurements performed using ELISA and autoanalyzer.
Main Results:
- 108 patients included; 52 had high CHA2DS2-VASc scores (≥2 male, ≥3 female).
- High-score group exhibited elevated CRP (P < 0.001) and NLR (P = 0.001).
- Significantly higher sP-selectin levels observed in the high-score group (P = 0.041).
Conclusions:
- Elevated CHA2DS2-VASc scores in SR are associated with increased inflammatory markers (CRP, NLR) and sP-selectin.
- These findings may elucidate the mechanism behind increased adverse cardiovascular events in high-risk SR patients.
- sP-selectin and inflammatory markers could serve as potential biomarkers for risk stratification in SR.
Background:
The CHA2DS2-VASc score has been shown to predict systemic thromboembolism and mortality in certain groups in sinus rhythm (SR), similar to its predictive value with atrial fibrillation (AF).
Objectives:
To compare factors of inflammation, thrombosis, platelet reactivity, and turnover in patients with high versus low CHA2DS2-VASc score in SR.
Methods:
We enrolled consecutive patients in SR and no history of AF. Blood samples were collected for neutrophil-to-lymphocyte ratio (NLR), C-reactive protein (CRP), immature platelet fraction (IPF%) and count (IPC), CD40 ligand, soluble P-selectin (sP-selectin) and E-selectin. IPF was measured by autoanalyzer and the other factors by ELISA.
Results:
The study comprised 108 patients (age 58 ± 18 years, 63 women (58%), 28 (26%) with diabetes), In addition, 52 had high CHA2DS2-VASc score (³ 2 for male and ³ 3 for female) and 56 had low score. Patients with low scores were younger, with fewer co-morbidities, and smaller left atrial size. sP-selectin was higher in the high CHA2DS2-VASc group (45, interquartile ratio [IQR] 36-49) vs. 37 (IQR 28-46) ng/ml, P = 0.041]. Inflammatory markers were also elevated, CRP 3.1 mg/L (IQR 1.7-9.3) vs. 1.6 (IQR 0.78-5.4), P < 0.001; NLR 2.7 (IQR 2.1-3.8) vs. 2.1 (IQR 1.6-2.5), P = 0.001, respectively. There was no difference in E-selectin, CD40 ligand, IPC, or IPF% between the groups.
Conclusions:
Patients in SR with high CHA2DS2-VASc score have higher inflammatory markers and sP-selectin. These findings may explain the higher rate of adverse cardiovascular events associated with elevated CHA2DS2-VASc score.
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