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Updated: Jun 1, 2026
10:27
Controlled Microfluidic Environment for Dynamic Investigation of Red Blood Cell Aggregation
Published on: June 4, 2015
Erythrocyte aggregation in patients with systemic lupus erythematosus
M I Spengler1, M J Svetaz, M B Leroux
1Departamento de Ciencias Fisiológicas, Cátedra de Física Biológica, Universidad Nacional de Rosario, Argentina. isabelspengler@hotmail.com
Clinical Hemorheology and Microcirculation
|June 10, 2011
Summary
Systemic Lupus Erythematosus (SLE) patients exhibit increased red blood cell aggregation due to higher immunoglobulin and fibrinogen levels. This altered erythrocyte behavior may contribute to the thrombotic risks associated with SLE.
Area of Science:
- Rheumatology
- Hematology
- Biophysics
Background:
- Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease.
- SLE patients have a high incidence of thrombotic and arteriosclerotic conditions.
Purpose of the Study:
- Investigate erythrocyte aggregation kinetics in SLE patients.
- Assess the influence of plasma factors (immunoglobulin, fibrinogen) and cellular factors (deformability, membrane fluidity) on erythrocyte aggregation in SLE.
Main Methods:
- Comparative study of erythrocyte aggregation in SLE patients and healthy controls.
- Analysis of plasma immunoglobulin and fibrinogen concentrations.
- Measurement of erythrocyte deformability and membrane lipid fluidity.
Main Results:
- SLE patients showed significantly higher erythrocyte aggregation rates and larger aggregate sizes compared to controls.
- Increased immunoglobulin and plasma fibrinogen levels correlated with enhanced aggregation.
- A negative correlation between aggregation parameters and rigidity index suggested altered deformability reduces aggregation.
- Decreased membrane lipid fluidity, indicated by anisotropy, may cause reduced deformability.
Conclusions:
- Elevated erythrocyte aggregation in SLE patients, driven by plasma factors and altered cell properties, could impair blood flow.
- This impaired flow may contribute to the increased risk of thromboembolic events in SLE.
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