Journal
CURRENT RHEUMATOLOGY REPORTS
Volume 22, Issue 10, Pages -Publisher
SPRINGER
DOI: 10.1007/s11926-020-00936-1
Keywords
Antiphospholipid syndrome; Neutrophils; Neutrophil extracellular traps; Interferons; Reactive oxygen species
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Funding
- VA Healthcare System
- Lupus Research Alliance
- Burroughs Wellcome Fund
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Purpose of Review Antiphospholipid syndrome (APS) is a thrombo-inflammatory disease that is primarily treated with anticoagulation. Better understanding the inflammatory aspects of APS could lead to safer, more effective, and more personalized therapeutic options. To this end, we sought to understand recent literature related to the role of neutrophils and, in particular, neutrophil extracellular traps (NETs) in APS. Recent Findings Expression of genes associated with type I interferons, endothelial adhesion, and pregnancy regulation are increased in APS neutrophils. APS neutrophils have a reduced threshold for NET release, which likely potentiates thrombotic events and perhaps especially large-vein thrombosis. Neutrophil-derived reactive oxygen species also appear to play a role in APS pathogenesis. There are new approaches for preventing and disrupting NETs that could potentially be leveraged to reduce the risk of APS-associated thrombosis. Summary Neutrophils and NETs contribute to APS pathophysiology. More precisely understanding their roles at a mechanistic level should help identify new therapeutic targets for inhibiting NET formation, enhancing NET dissolution, and altering neutrophil adhesion. Such approaches may ultimately lead to better clinical management of APS patients and thereby reduce the chronic burden of this disease.
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