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Procoagulant Platelet Characterization by Measuring Phosphatidylserine Exposure and Microvesicle Release from Human Purified Platelets
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Soluble platelet selectin and platelets in COVID-19: a multifaceted connection

Emmanuel Ifeanyi Obeagu1, Getrude Uzoma Obeagu2, Patrick Maduabuchi Aja3,4

  • 1Department of Medical Laboratory Science, Kampala International University.

Annals of Medicine and Surgery (2012)
|August 9, 2024
PubMed

Insights

Platelets and soluble P-selectin (sP-selectin) are key in COVID-19 immunothrombosis. Targeting these may reduce thromboinflammation and improve patient outcomes.

Area of Science:

  • Immunology
  • Hematology
  • Vascular Biology

Background:

  • Platelets play a critical role in hemostasis and have emerged as significant contributors to immunothrombotic complications in COVID-19.
  • Elevated soluble P-selectin (sP-selectin) levels, indicating platelet activation and endothelial injury, are consistently observed in COVID-19 patients.
  • These markers correlate with disease severity and adverse outcomes, highlighting their prognostic value.

Purpose of the Study:

  • To elucidate the intricate relationship between platelets, sP-selectin, and COVID-19 pathogenesis.
  • To understand the role of platelet activation in amplifying systemic inflammation and endothelial injury.
  • To explore the potential of targeting platelet-mediated pathways for therapeutic interventions.

Main Methods:

  • Observational studies analyzing platelet activation markers and sP-selectin levels in COVID-19 patients.
  • Analysis of correlations between marker levels, disease severity, and clinical outcomes.
  • Review of existing literature on platelet function and thromboinflammation in viral infections.

Main Results:

  • Platelet activation contributes to the release of inflammatory mediators and platelet-leukocyte interactions, worsening systemic inflammation and endothelial damage.
  • Platelet-derived factors promote microvascular thrombosis, exacerbating tissue damage and organ dysfunction in severe COVID-19.
  • Elevated sP-selectin serves as a biomarker for disease severity and aids in risk stratification.

Conclusions:

  • Platelets and sP-selectin are pivotal in orchestrating thromboinflammation, vascular dysfunction, and disease progression in COVID-19.
  • Therapeutic strategies targeting platelet activation and sP-selectin pathways, including antiplatelet and anti-inflammatory agents, show promise.
  • A deeper understanding facilitates tailored treatments to mitigate thromboinflammation and improve COVID-19 patient outcomes.

Keywords:
COVID-19plateletsoluble platelet selectin

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