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Microparticles and acute renal dysfunction in septic patients

Margit Tőkés-Füzesi1, Gábor Woth, Balázs Ernyey

  • 1Department of Laboratory Medicine, University of Pécs, Pécs, Hungary.

Journal of Critical Care
|September 7, 2012
PubMed
Abstract

Insights

Severe sepsis increases microparticles (MPs), particularly platelet-derived ones. These elevated MPs may contribute to sepsis-related kidney damage, highlighting the hemostasis system's role.

Area of Science:

  • Sepsis Pathogenesis
  • Hemostasis and Thrombosis
  • Renal Physiology

Background:

  • The precise role of microparticles (MPs) in severe sepsis pathogenesis remains unclear.
  • Organ failure, especially renal impairment, is a significant mortality factor in sepsis.
  • Understanding MP dynamics can elucidate sepsis complications.

Purpose of the Study:

  • To quantify microparticle levels in severe sepsis patients.
  • To investigate the association between microparticle changes and organ failures, particularly renal dysfunction.
  • To explore the impact of sepsis on platelet-derived MPs.

Main Methods:

  • Flow cytometry was used to measure microparticles of platelet, monocyte, and myeloid cell origins.
  • Thirty-seven severe septic patients and 20 controls were analyzed over five days.
  • Patient status and organ failure markers were monitored.

Main Results:

  • Septic patients exhibited significantly higher total MPs and platelet-derived MPs (CD41+, CD42a+, PAC1+) compared to controls.
  • Increased total MPs, CD41+, and CD13+ particles were observed in septic patients with renal dysfunction.
  • Platelet-derived CD42a+ MPs negatively correlated with blood urea nitrogen and creatinine levels in sepsis-related kidney injury.

Conclusions:

  • Elevated platelet-derived MPs are evident in severe sepsis.
  • These findings suggest the hemostasis system's involvement in sepsis-related renal impairments.
  • Microparticle analysis offers insights into sepsis pathophysiology and complications.

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