Related Experiment Video
Updated: Apr 25, 2026

Routine Screening Method for Microparticles in Platelet Transfusions
Published on: January 31, 2018
Are microparticles the missing link between thrombosis and autoimmune diseases? Involvement in selected rheumatologic
Melissa Cunningham1, Natalia Marks2, April Barnado1
1Division of Rheumatology and Immunology, Medical University of South Carolina, Charleston, South Carolina.
Abstract:
Microparticles (MPs) are membrane-bound vesicles with important physiologic effects. MPs exchange information intercellularly, with each kind of MP carrying antigens and receptors of the cells from which they originated. They are biologic effectors in inflammation, angiogenesis, vascular injury, and thrombosis. Thrombosis is generally caused by abnormalities in blood flow, blood composition, and/or properties of the vessel wall. Thrombosis is a well-described feature of cardiovascular disease and cerebrovascular disease. Accumulating evidence suggests that increased risk of thrombosis is also characteristic of autoimmune disorders and immune-mediated diseases affecting all age groups, although the older adults are most vulnerable. Current research has also implicated MPs as a source of autoantigenic nuclear material that can form immune complexes, activate the innate immune system, and may lead to autoimmunity. This review focuses on the contribution of MPs to both the pathogenesis of autoimmune diseases and, as the immune and coagulation systems are tightly linked, their role in hypercoagulability in the setting of autoimmunity in an aging population.
Insights
Microparticles (MPs) are vesicles involved in cell communication and implicated in thrombosis. This review explores their role in autoimmune diseases and hypercoagulability, particularly in older adults.
Area of Science:
- Immunology
- Hematology
- Geriatrics
Background:
- Microparticles (MPs) are cell-derived vesicles mediating intercellular communication.
- MPs are implicated in inflammation, vascular injury, and thrombosis.
- Autoimmune diseases are increasingly linked to thrombosis risk, especially in older adults.
Purpose of the Study:
- To review the role of MPs in autoimmune disease pathogenesis.
- To examine the link between MPs, autoimmunity, and hypercoagulability in aging.
- To highlight MPs as potential autoantigens and immune activators.
Main Methods:
- Literature review of studies on microparticles, autoimmunity, and thrombosis.
- Analysis of the interplay between immune and coagulation systems.
- Focus on research concerning aging populations.
Main Results:
- MPs contribute to autoimmune disease development by carrying autoantigens.
- MPs can activate the innate immune system, potentially leading to autoimmunity.
- Increased MPs are associated with hypercoagulability in autoimmune conditions, particularly in the elderly.
Conclusions:
- Microparticles play a significant role in the pathogenesis of autoimmune diseases.
- The link between MPs, autoimmunity, and hypercoagulability is critical in aging populations.
- MPs represent a key factor in understanding thrombosis risk in autoimmune disorders.
Related Concept Videos
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Autoimmune Disorders
Concept and Mechanism of Autoimmune Diseases
The immune...
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Inflammation
Rheumatic Heart Disease I: Introduction
The JAK-STAT Signaling Pathway

