Antiphospholipid Syndrome--Not a Noninflammatory Disease
Philip G de Groot1, Rolf T Urbanus1
1Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht, The Netherlands.
Seminars in Thrombosis and Hemostasis
|August 16, 2015
Summary
Antiphospholipid syndrome (APS) involves autoantibodies targeting beta-2 glycoprotein I. This review explores how inflammation and complement activation contribute to APS pathogenesis and clinical outcomes.
Area of Science:
- Immunology
- Rheumatology
- Pathophysiology
Background:
- Antiphospholipid syndrome (APS) is defined by thrombosis and pregnancy issues in patients with antiphospholipid antibodies (aPLs).
- While not a primary clinical feature, inflammation is increasingly recognized as crucial in APS.
- Beta-2 glycoprotein I (β2GPI), the main antigen for aPLs, has roles in microparticle clearance and innate immunity.
Purpose of the Study:
- To review the physiological functions of β2GPI.
- To discuss the development of autoantibodies against β2GPI.
- To explore the role of inflammation in APS clinical manifestations.
Main Methods:
- Literature review of current research on APS.
- Analysis of the role of β2GPI in immune responses.
- Examination of inflammatory mediators and complement activation in APS pathogenesis.
Main Results:
- β2GPI's natural functions may explain autoantibody formation, potentially augmenting clearance.
- Inflammatory mediators are implicated in leukocyte activation and endothelial dysfunction in APS.
- Evidence supports a role for complement activation in APS pathogenesis.
Conclusions:
- Inflammation and complement activation are significant contributors to APS.
- Understanding β2GPI's function and autoantibody formation is key to elucidating APS mechanisms.
- Further research into inflammatory pathways may reveal new therapeutic targets for APS.
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