Antiphospholipid syndrome (APS) comprises of a wide spectrum of clinical and obstetric manifestations linked to the presence of antiphospholipid antibodies (aPL). APS was described in the context of lupus, and later as an isolated syndrome or primary APS. The presence of aPL, especially the lupus anticoagulant test, is associated with adverse pregnancy outcomes, such as fetal death, recurrent early miscarriages, pre-eclampsia, and placental insufficiency, but does not seem to influence infertility. High quality scientific data to support these associations, however, are lacking, and controversies arise about the definition of positive aPL (low vs medium-high titers) or even the definition of the adverse events. This review discusses APS classification criteria and the current debate about it.
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http://dx.doi.org/10.3389/fimmu.2015.00205 | DOI Listing |
Am J Case Rep
January 2025
Department of Clinical Diagnostic Laboratories, Hospital Al-Sultan Abdullah, Puncak Alam, Selangor, Malaysia.
BACKGROUND Lupus anticoagulants (LA) can interfere with routine coagulation tests such as the activated partial thromboplastin time (aPTT) and prothrombin time (PT). The international normalized ratio (INR) is derived from PT and is used to monitor warfarin therapy. A positive LA result is one of the laboratory criteria of the 2023 ACR/EULAR antiphospholipid syndrome (APS) classification criteria.
View Article and Find Full Text PDFMed Clin (Barc)
January 2025
Fundación Valle del Lili, Departamento de Radiología, Cali, Colombia.
Introduction: The incidence of cognitive compromise in systemic lupus erythematosus is variable; it presents early and is usually asymptomatic. Our study evaluated the frequency of cognitive impairment in patients without a previous diagnosis of neuropsychiatric lupus and compared the differences in intracerebral size in subgroups with cognitive alterations and positive autoantibodies.
Methods: This is a cross-sectional study.
Blood
January 2025
Cleveland Clinic, Cleveland, Ohio, United States.
Antibodies to β2-glycoprotein I (β2GPI) cause thrombosis in antiphospholipid syndrome, however the role of β2GPI in coagulation in vivo is not understood. To address this issue, we developed β2GPI-deficient mice (Apoh-/-) by deleting exon 2 and 3 of Apoh using CRISPR/Cas9 and compared the development of thrombosis in wild-type (WT) and Apoh-/- mice using rose bengal and FeCl3-induced carotid thrombosis, laser-induced cremaster arteriolar injury, and inferior vena cava (IVC) stasis models. We also compared tail bleeding times and activation of platelets from WT and Apoh-/- mice in the absence and presence of β2GPI.
View Article and Find Full Text PDFLupus
January 2025
Pediatric Rheumatology Unit, Instituto da Criança e do Adolescente, Hospital das Clínicas HCFMUSP, Sao Paulo, Brazil.
To identify clusters of autoantibodies in a large cSLE population and to verify possible associations between different autoantibody clusters and the following variables: demographic data, cumulative clinical and laboratory manifestations, disease activity, cumulative damage and mortality. A cross-sectional study was performed in 27 Pediatric Rheumatology University centers, including 912 cSLE patients. The frequencies of seven selected autoantibodies (anti-dsDNA, anti-Ro/SSA, anti-La/SSB, anti-Sm, anti-RNP, aCL IgM and/or IgG and LA) were used for cluster analysis using the K-means method.
View Article and Find Full Text PDFRheumatol Int
January 2025
Division of Rheumatology, Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, AB, Canada.
Little is known about how patients with antiphospholipid syndrome (APS) or antiphospholipid antibodies (aPL) access and trust health information. This research aimed to: describe the sources of information most frequently accessed/trusted by patients with APS/aPL; identify if individuals with APS/aPL perceived their health had been negatively impacted by various sources and document obstacles to accessing health information. Patients meeting Revised Sapporo Criteria for APS or with ≥1 positive aPL on ≥2 occasions were recruited to an online survey regarding their health information use at diagnosis and within 6 months preceding survey completion.
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