Antiphospholipid syndrome pathogenesis in 2023 : an update of new mechanisms or just a reconsideration of the old ones?

© The Author(s) 2024. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email: journals.permissionsoup.com..

Antibodies against phospholipid (aPL)-binding proteins, in particular, beta 2 glycoprotein I (β2GPI), are diagnostic/classification and pathogenic antibodies in antiphospholipid syndrome (APS). β2GPI-aPL recognize their target on endothelium and trigger a pro-thrombotic phenotype which is amplified by circulating monocytes, platelets and neutrophils. Complement activation is required as supported by the lack of aPL-mediated effects in animal models when the complement cascade is blocked. The final result is a localized clot. A strong generalized inflammatory response is associated with catastrophic APS, the clinical variant characterized by systemic thrombotic microangiopathy. A two-hit hypothesis was suggested to explain why persistent aPL are associated with acute events only when a second hit allows antibody/complement binding by modulating β2GPI tissue presentation. β2GPI/β2GPI-aPL are also responsible for obstetric APS, being the molecule physiologically present in placental/decidual tissues. Additional mechanisms mediated by aPL with different characteristics have been reported, but their diagnostic/prognostic value is still a matter of research.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:63

Enthalten in:

Rheumatology (Oxford, England) - 63(2024), SI vom: 06. Feb., Seite SI4-SI13

Sprache:

Englisch

Beteiligte Personen:

Raschi, Elena [VerfasserIn]
Borghi, Maria Orietta [VerfasserIn]
Tedesco, Francesco [VerfasserIn]
Meroni, Pier Luigi [VerfasserIn]

Links:

Volltext

Themen:

Anti-phospholipid syndrome
Antibodies, Antiphospholipid
Autoantibodies
Beta 2-Glycoprotein I
Beta2 glycoprotein I
Complement
Endothelium
Inflammation
Journal Article
Miscarriages
Monocytes
Neutrophils
Platelets
Thrombosis

Anmerkungen:

Date Completed 08.02.2024

Date Revised 08.02.2024

published: Print

Citation Status MEDLINE

doi:

10.1093/rheumatology/kead603

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368099733