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http://dx.doi.org/10.1093/humrep/dem163 | DOI Listing |
Sci Rep
December 2024
Laboratory of Molecular and Cellular Immunology, Institute of Molecular Biology NAS RA, 7 Hasratyan Str., Yerevan, 0014, Armenia.
Antiphospholipid syndrome (APS) is associated with recurrent pregnancy morbidity, yet the underlying mechanisms remain elusive. We performed multifaceted characterization of the biological and transcriptomic signatures of mouse placenta and uterine natural killer (uNK) cells in APS. Histological analysis of APS placentas unveiled placental abnormalities, including disturbed angiogenesis, occasional necrotic areas, fibrin deposition, and nucleated red blood cell enrichment.
View Article and Find Full Text PDFRev Med Interne
December 2024
Service de médecine interne et inflammation, département inflammation-immunopathologie-biothérapie (DMU I3), CEREMAIAA, hôpital Saint-Antoine, AP-HP, Sorbonne université, Paris, France.
Hydroxychloroquine (HCQ), a synthetic antimalarial, is recognized for its immunomodulatory, anti-inflammatory and vascular-protective effects. In 20-30% of cases of primary obstetrical antiphospholipid syndrome (APS), the combination of antiplatelet aggregation and prophylactic anticoagulation fails to prevent obstetrical complications, a situation referred to as refractory obstetrical APS. This is partly due to the pro-inflammatory effects of antiphospholipid antibodies (aPL) binding to decidual and trophoblastic cells, which compromise embryonic implantation and placentation.
View Article and Find Full Text PDFJ Appl Lab Med
December 2024
ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT, United States.
Background: The 2023 American College of Rheumatology and modified Sapporo criteria for antiphospholipid syndrome (APS) recommend ELISA to detect anticardiolipin (aCL) and anti-β2-glycoprotein I (aβ2GP1) IgG/IgM antibodies, focusing on moderate to high levels or exceeding the 99th percentile. This study aims to establish the 99th percentile threshold for anti-phospholipid (aPL) antibodies and compare the diagnostic accuracies of these thresholds with manufacturer cutoffs using 2 methodologies.
Methods: The 99th percentile cutoffs for aPL antibodies from 305 healthy donors were established using Aptiva, Particle-Based Multi-Analyte Technology (PMAT), and QUANTA Lite (QL) ELISA, following nonparametric reference interval estimation.
Front Immunol
December 2024
Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium.
Introduction: Unfolded Von Willebrand Factor (VWF) is increased in thrombotic pathologies such as myocardial infarction. Unfolded VWF mediates the binding of platelets without the need for collagen. β-glycoprotein I (β-GPI) is a natural inhibitor of the platelet-VWF interaction.
View Article and Find Full Text PDFFront Pediatr
December 2024
Pediatric Intensive Care Unit, The Second Hospital of Lanzhou University, Lanzhou, China.
Background: Antiphospholipid syndrome (APS) is an autoimmune disease characterized by recurrent vascular thrombotic events. Catastrophic APS (CAPS), which can result in multiple organ failure and even death, is the most severe manifestation of APS. Herein, we report the case of a pediatric patient with CAPS, including the clinical course, diagnosis, and treatment, with the goal of expanding the literature on this condition, as reports of CAPS in pediatric patients are rare.
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