Differences in Antiphospholipid Antibody Profile between Patients with Obstetric and Thrombotic Antiphospholipid Syndrome

Antiphospholipid syndrome (APS) is a systemic autoimmune condition characterised by the presence of antiphospholipid antibodies (aPL) associated with vascular thrombosis and/or pregnancy complications. In a cohort of 74 yet diagnosed APS individuals fulfilling Sydney laboratory criteria (twice positive for lupus anticoagulant, anticardiolipin, aCL, and/or anti-β2glycoprotein I, aβ2GPI), 33 out of 74 were obstetric APS (OAPS) and 41 thrombotic APS (TAPS) patients. 39% of TAPS patients were women. Although aPL detection was persistent, we observed an oscillatory aPL positivity in 56.7% and a transient seroconversion in 32.4% of APS patients at enrolment. Thus, we tested their sera in a line immunoassay that simultaneously detected IgG or IgM for criteria (aCL and aβ2GPI) and non-criteria (anti-phosphatidylserine, aPS; anti-phosphatidic acid, aPA; anti-phosphatidylinositol, aPI; anti-annexin 5, aA5; anti-prothrombin, aPT; anti-phosphatidylethanolamine; anti-phosphatidylglycerol, and anti-phosphatidylcholine) aPL. OAPS and TAPS patients displayed different but overlapping clusters based on their aPL reactivities. Specifically, while OAPS patients showed higher aPA, aPS, aA5, aβ2GPI and aPT IgM levels than TAPS patients, the latter displayed higher reactivity in aCL, aPI and aA5 IgG. Eventually, with a cut-off of the 99th percentile established from a population of 79 healthy donors, TAPS patients significantly tested more positive for aCL and aA5 IgG than OAPS patients, who tested more positive for aPA, aPS and aβ2GPI IgM. Transiently seronegative APS patients showed non-criteria aPL positivity twice in sera obtained 3 months apart. Overall, our data show that APS patients presented clusters of aPL that define different profiles between OAPS and TAPS, and persistent non-criteria aPL positivity was observed in those who are transiently seronegative.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:23

Enthalten in:

International journal of molecular sciences - 23(2022), 21 vom: 24. Okt.

Sprache:

Englisch

Beteiligte Personen:

Anunciación-Llunell, Ariadna [VerfasserIn]
Muñoz, Cándido [VerfasserIn]
Roggenbuck, Dirk [VerfasserIn]
Frasca, Stefano [VerfasserIn]
Pardos-Gea, Josep [VerfasserIn]
Esteve-Valverde, Enrique [VerfasserIn]
Alijotas-Reig, Jaume [VerfasserIn]
Miró-Mur, Francesc [VerfasserIn]

Links:

Volltext

Themen:

7320-57-2
APT
Antibodies, Antiphospholipid
Antiphospholipid antibodies
Beta 2-Glycoprotein I
Immunoglobulin G
Immunoglobulin M
Journal Article
Line Immunoassay
Non-criteria antiphospholipid antibody
Obstetric antiphospholipid syndrome
Thrombotic antiphospholipid syndrome

Anmerkungen:

Date Completed 14.11.2022

Date Revised 17.11.2022

published: Electronic

Citation Status MEDLINE

doi:

10.3390/ijms232112819

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM348751931