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Increased circulating CD31+/CD42- microparticles are associated with impaired systemic artery elasticity in healthy

Jie-Mei Wang1, Yi-Jun Huang, Yan Wang

  • 1Department of Cardiology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.

American Journal of Hypertension
|September 4, 2007
PubMed
Abstract

Insights

Circulating CD31+/CD42- microparticles (MPs) correlate with reduced artery elasticity in healthy individuals. Elevated MP levels may indicate impaired vascular health and serve as a novel biomarker for clinical evaluation.

Area of Science:

  • Cardiovascular Research
  • Biomarker Discovery
  • Endothelial Function

Background:

  • Endothelial dysfunction is linked to impaired artery elasticity in various diseases.
  • CD31+/CD42- microparticles (MPs) are emerging markers of endothelial injury.
  • The relationship between physiological CD31+/CD42- MPs and arterial properties is not well-established.

Purpose of the Study:

  • To investigate the correlation between circulating CD31+/CD42- MPs and systemic artery elasticity in healthy subjects.
  • To determine if CD31+/CD42- MPs are associated with measures of arterial stiffness.

Main Methods:

  • Evaluated brachia-ankle pulse-wave velocity (baPWV) and large/small artery elasticity indices using noninvasive pulse-wave analysis.
  • Quantified circulating CD31+/CD42- MPs via flow cytometry in healthy participants.

Main Results:

  • Positive correlation found between CD31+/CD42- MPs and baPWV (r = 0.371, P = .008).
  • Negative correlation observed between CD31+/CD42- MPs and large-artery (r = -0.294, P = .037) and small-artery (r = -0.310, P = .027) elasticity indices.
  • Multivariate analysis identified CD31+/CD42- MPs as significant contributors to impaired systemic artery elasticity.

Conclusions:

  • Circulating CD31+/CD42- MPs are closely associated with impaired systemic artery elasticity in healthy individuals.
  • CD31+/CD42- MPs serve as a biomarker for endothelial dysfunction and vascular injury.
  • These MPs may represent a novel surrogate marker for clinical assessment of vascular damage.

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