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Updated: Jun 12, 2026

Isolation and Characterization of Neutrophil-derived Microparticles for Functional Studies
Published on: March 2, 2018
[The role of released membrane microparticles in pathogenesis of systemic inflammatory response]
Abstract:
The aim of this work was to evaluate contribution of released membrane particles (RMP) to the development of systemic inflammatory response (SIR) after aortocoronary bypass grafting (ACBG). The number of RMP carrying surface adhesion molecules, CD62L, CD62P, CD62E, was shown to increase in the early postoperative period in parallel with the enhancement of lymphocyte plasma membrane blebbing and elevation of cytokine levels in peripheral blood. It is concluded that (1) activation of plasma membrane blebbing in peripheral blood cells underlies the appearance of RMP in circulation; (2) increased number of RMP expressing CD62L, CD62P, CD62E is a marker of intercellular communication associated with the development of SIR and suggests new mechanisms of RMP involvement in the reaction of organism to massive surgical injury.
Insights
Released membrane particles (RMP) carrying adhesion molecules increase after aortocoronary bypass grafting (ACBG). This suggests RMP play a role in the systemic inflammatory response (SIR) following major surgery.
Area of Science:
- Cardiovascular Surgery
- Immunology
- Cell Biology
Context:
- Aortocoronary bypass grafting (ACBG) is a major surgical procedure.
- Systemic inflammatory response (SIR) is a common complication after ACBG.
- The role of released membrane particles (RMP) in SIR is not fully understood.
Purpose:
- To evaluate the contribution of RMP to the development of SIR after ACBG.
- To investigate the characteristics of RMP, including surface adhesion molecules.
- To explore the relationship between RMP, lymphocyte blebbing, and cytokine levels.
Summary:
- RMP expressing CD62L, CD62P, and CD62E were found to increase post-ACBG.
- Increased RMP levels correlated with enhanced lymphocyte plasma membrane blebbing and elevated cytokine levels.
- The study concludes that RMP originate from cell blebbing and are markers of intercellular communication in SIR.
Impact:
- Identifies RMP as a potential biomarker for SIR after ACBG.
- Suggests novel mechanisms for RMP involvement in the body's response to surgical injury.
- Provides insights into cell-to-cell communication during systemic inflammation.
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