Abstracts tagged "antiphospholipid syndrome"

Abstract Number: 0528 • ACR Convergence 2020
The Complex Relationship Between C4b Binding Protein, Warfarin and Antiphospholipid Antibodies
Giorgia Grosso¹, Kerstin Sandholm², Aleksandra Antovic¹, Iva Gunnarsson¹, Agneta Zickert¹, Anna Vikerfors³, Lennart Truedsson⁴, Maria Bruzelius¹, Bo Nilsson⁵, Kristina Nilsson Ekdahl⁵ and Elisabet Svenungsson¹, ¹Karolinska University Hospital, Stockholm, Sweden, ²Linnaeus Center for Biomaterials Chemistry, Linnaeus University, Kalmar, Sweden, ³Swedish Medical Products Agency, Uppsala, Sweden, ⁴Lunds University, Lund, Sweden, ⁵Uppsala University, Uppsala, Sweden
Background/Purpose: C4b Binding Protein (C4BP) is the main inhibitor of the classical complement pathway. Both β2glycoprotein-I (β2GPI), the main antigen in the antiphospholipid syndrome (APS),…
Abstract Number: 0529 • ACR Convergence 2020
A Prospective Study on the Incidence of a First Thrombo-embolic Event in Patients with Systemic Lupus Erythematosus and Anti-phosphatidylserine/prothrombin Antibodies
Savino Sciascia¹, Massimo Radin¹, Irene Cecchi¹, Daniela Rossi¹ and Dario Roccatello², ¹University of Torino, Torino, Italy, ²S Giovanni Hospital, Univ of Turin, Turin, Italy
Background/Purpose: Prospective data confirming the role of anti-phosphatidylserine/prothrombin antibodies (aPS/PT) in the absence of other aPL tested by β2–glycoprotein I-depend assays are missing.Methods: Since 2015 aPSPT…
Abstract Number: 0530 • ACR Convergence 2020
Pediatric APS: Clinical Features, Therapeutic Interventions, and Damage in a Series of 22 Cases
Jacqueline Madison¹, Kelsey Gockman¹ and Jason Knight², ¹University of Michigan, Ann Arbor, ²Division of Rheumatology, University of Michigan, Ann Arbor, MI
Background/Purpose: Pediatric antiphospholipid syndrome (APS) is a thromboinflammatory disease classically defined by the presence of circulating antiphospholipid antibodies and either thrombotic events or pregnancy morbidity.…
Abstract Number: 0847 • ACR Convergence 2020
Impact of Hydroxychloroquine Treatment on Immunologic Markers in SLE Depends on Ethnicity
Laurence Magder¹, Daniel Goldman² and Michelle Petri², ¹University of Maryland, Baltimore, Baltimore, MD, ²Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose: SLE patients with certain immunological markers (i.e., anti-DNA, low complement) are at higher risk of lupus nephritis and those with antiphospholipid antibodies are at…
Abstract Number: 0938 • ACR Convergence 2020
Low Preconceptional Complement Level Is Related with an Adverse Obstetric Outcome in a Multicentric Cohort of Pregnancy in Patients with APS and aPL Positivity
Cecilia Nalli¹, Daniele Lini², Laura Andreoli², Francesca Crisafulli², Micaela Fredi², Maria Grazia Lazzaroni², Victoria Bitsadze³, Antonia Calligaro⁴, Valentina Canti⁵, Roberto Caporali⁶, Francesco Carubbi⁷, Cecilia Chighizola⁸, Paola Conigliaro⁹, Caterina De Carolis¹⁰, Teresa Del Ross⁴, Maria Favaro⁴, Maria Gerosa¹¹, Annamaria Iuliano¹², Jamilya Khizroeva³, Alexander Makatsariya³, Pierlugi Meroni¹³, Marta Mosca¹⁴, Melissa Padovan¹⁵, Roberto Perricone⁹, Patrizia Rovere-Querini¹⁶, Gian Domenico Sebastiani¹², Chiara Tani¹⁴, Marta Tonello⁴, Dina Zucchi¹⁴, Franco Franceschini¹⁷ and Angela Tincani², ¹Rheumatology and Clinical Immunology Unit, ASST Spedali Civili of Brescia, Brescia, Lombardia, Italy, ²Rheumatology and Clinical Immunology Unit, Spedali Civili and University of Brescia, Brescia, Lombardia, Italy, ³Department of Obstetrics and Gynecology of I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia, ⁴Rheumatology Unit, Department of Medicine, University Hospital of Padua, Padua, Italy, ⁵Immunology, Rheumatology, Allergology and Rare Disease-IRCCS San Raffaele Hospital, Laboratory of Autoimmunity and vascular inflammation San Raffaele, Milan, Italy, ⁶Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy, ⁷Department of Biotechnological and Applied Clinical Science, Rheumatology Unit, School of Medicine, University of L'Aquila, L'Aquila, Italy, ⁸Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; Experimental Laboratory of Immunorheumatological Researches, Istituto Auxologico Italiano, Milan, Italy, ⁹Rheumatology, Allergology and Clinical Immunology, Department of "Medicina dei Sistemi", University of Rome Tor Vergata, Rome, Italy, ¹⁰Polymedical Center for Prevention of Recurrent Spontaneous Abortion, Rome, Italy, ¹¹Division of Rheumatology, Department of Clinical Sciences and Community Health, Ospedale Gaetano Pini, University of Milan, Milan, Italy, ¹²Rheumatology Unit, Azienda Ospedaliera San Camillo-Forlanini, Rome, Italy, ¹³Division of Rheumatology, ASST.G Pini, Department of Clinical Sciences and Community Health, University of Milan and Istituto Auxologico Italiano, Milan, Italy, ¹⁴Rheumatology Unit, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy, ¹⁵UO e Sezione di Reumatologia, Dipartimento di Scienze Mediche, Universita' degli Studi di Ferrara, Ferrara, Italy, ¹⁶Unit of Immunology, Rheumatology, Allergy and Rare Diseases, Università Vita-Salute San Raffaele - IRCCS Ospedale San Raffaele, Milan, Italy, ¹⁷Rheumatology and Clinical Immunology, Spedali Civili and University of Brescia, Brescia, Italy
Background/Purpose: The role of complement in the aPL related pathology has been widely studied in animal models. aPL can induce fetal loss in experimental animals but…
Abstract Number: 1261 • ACR Convergence 2020
Antiphospholipid Patterns Predict the Risk of Thrombosis in Systemic Lupus Erythematosus
Selcan Demir¹, Jessica Li², Laurence Magder³ and Michelle Petri⁴, ¹Hacettepe University Faculty of Medicine, Ankara, Ankara, Turkey, ²Johns Hopkins University, Baltimore, MD, ³University of Maryland, Baltimore, Baltimore, MD, ⁴Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose: Antiphospholipid syndrome (APS) has been classified as the development of venous and/or arterial thromboses, and/or pregnancy morbidity, in the presence of persistently raised levels…
Abstract Number: 0429 • ACR Convergence 2020
Prothrombotic Antiphospholipid Antibodies in COVID-19
Yu Zuo¹, Shanea Estes², Alex Ghandi³, Srilakshmi Yalavarthi³, Ramadan Ali³, Shi Hui³, Gautam Sule³, Kelsey Gockman³, Jacqueline Madison³, Melanie Zuo³, Wrenn Woodard³, Sean Lezak³, Njira Lugogo³, Yogendra Kanthi⁴ and Jason Knight¹, ¹Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²University of Michigan, Ann Arbor, MI, ³University of Michigan, Ann Arbor, ⁴Division of Cardiovascular Medicine, Ann Arbor
Background/Purpose: Patients with coronavirus disease 19 (COVID-19) are at high risk for thrombosis of arteries and veins. At the same time, COVID-19 lung histopathology has…
Abstract Number: 1262 • ACR Convergence 2020
Single LAC Positivity versus Double and Triple Positivity for Thrombosis in SLE
Selcan Demir¹, Jessica Li², Laurence Magder³ and Michelle Petri⁴, ¹Hacettepe University Faculty of Medicine, Ankara, Ankara, Turkey, ²Johns Hopkins University, Baltimore, MD, ³University of Maryland, Baltimore, Baltimore, MD, ⁴Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose:Antiphospholipid syndrome (APS) is classified as the development of venous and/or arterial thromboses, and pregnancy morbidity, in the presence of antiphospholipid antibodies (aPL); lupus anticoagulant,…
Abstract Number: 0519 • ACR Convergence 2020
Thrombotic and Obstetric Associations of Non-Criteria Antiphospholipid Immunoassays That Detect Antibodies to Neutral and Negatively-Charged Phospholipid
Rohan Willis¹, E Nigel Harris², Vijaya Murthy³, Zurina Romay-Penabad¹, Alvaro Schleh⁴, Monica Smikle², Karel De Ceulaer², Anne Tebo⁵, Troy Jaskowski⁶, Marta Guerra⁷, David Ware Branch⁸, Jane Salmon⁷, Michelle Petri⁹ and Emilio Gonzalez¹, ¹University of Texas Medical Branch, Galveston, TX, ²University of the West Indies, Kingston, Jamaica, ³University of Texas Medical Branch, League City, TX, ⁴Antiphospholipid Standardization Laboratory, GALVESTON, TX, ⁵Department of Pathology, University of Utah, Salt Lake City, ⁶ARUP Laboratories, Salt Lake City, UT, ⁷Hospital for Special Surgery, New York, NY, ⁸University of Utah, Salt Lake City, ⁹Johns Hopkins University School of Medicine, Baltimore
Background/Purpose: Criteria antiphospholipid (aPL) antibodies that identify antiphospholipid syndrome (APS) patients, anticardiolipin (aCL) and anti-β2glycoprotein-I (anti-β2GPI), have demonstrated inconsistent specificity and sensitivity in this regard…
Abstract Number: 1447 • ACR Convergence 2020
Vitamin D Deficiency Enhances Antiphospholipid Antibody-Mediated Thrombosis in a Passive Immunization Mouse Model
Rohan Willis¹, Karen Roye-Green², Zurina Romay-Penabad¹, Elizabeth Papalardo¹, Alvaro Schleh³, Vijaya Murthy⁴, Monica Smikle² and Emilio Gonzalez¹, ¹University of Texas Medical Branch, Galveston, TX, ²University of the West Indies, Kingston, Jamaica, ³Antiphospholipid Standardization Laboratory, GALVESTON, TX, ⁴University of Texas Medical Branch, League City, TX
Background/Purpose: Abnormal vitamin D levels occur frequently in antiphospholipid (APS) patients and are correlated with thrombosis. It remains unclear however if vitamin D deficiency observed…
Abstract Number: 0520 • ACR Convergence 2020
Antiphospholipid Antibodies and Thrombotic Events in COVID-19 Patients Hospitalized in Medicine Ward
Alexandre Le Joncour¹, Corinne Frere¹, Isabelle Martin-Toutain¹, Paul Gougis¹, Pascale Ghillani-Dalbin¹, Georgina Maalouf¹, Matheus Vieira¹, Anne-Genevieve Marcelin¹, Joe-Elie Salem¹, Yves Allenbach², David Saadoun³, Olivier Benveniste⁴ and Patrice Cacoub¹, ¹APHP, paris, France, ²Sorbonne Université, Paris, Ile-de-France, France, ³AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, F-75013, Paris, France, Centre national de références Maladies Autoimmunes et systémiques rares et Maladies Autoinflammatoires rares, PAris, France, ⁴Sorbonne Université, paris, France
Background/Purpose: A high prevalence of thrombotic events has been reported in critically ill COVID-19 patients but data on the prevalence of thrombosis in ward patients…
Abstract Number: 1448 • ACR Convergence 2020
Single-cell RNA Sequencing of Livedo Reticularis Skin Reveals Endothelial Pathology in Antiphospholipid Syndrome
Hui Shi¹, Allison Billi¹, Rachael Wasikowski¹, Kelsey Gockman¹, Alex Tsoi¹, Johann Gudjonsson² and Jason Knight³, ¹University of Michigan, Ann Arbor, ²University of Michigan, Ann ArborUniversity of Michigan, ³Division of Rheumatology, University of Michigan, Ann Arbor, MI
Background/Purpose: Antiphospholipid syndrome (APS) is a thromboinflammatory disease that can present with a variety of clinical phenotypes. Livedo reticularis is the most common skin manifestation…
Abstract Number: 0521 • ACR Convergence 2020
Avoiding Misclassification of Primary Antiphospholipid Syndrome as Systemic Lupus Erythematosus: What Are the Best-performing SLE Classification Criteria?
Flavio Signorelli¹, Gustavo Balbi², Eloisa Bonfa³, Eduardo Borba⁴ and Danieli Andrade⁵, ¹Universidade de São Paulo, Rio de janeiro, Rio de Janeiro, Brazil, ²Universidade de São Paulo, Juiz de Fora, Minas Gerais, Brazil, ³Hospital das Clínicas, Faculdade de Medicina da Universidade de Sao Paulo (HCFMUSP), Sao Paulo, Sao Paulo, Brazil, ⁴Rheumatology Division, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil, ⁵University of Sao Paulo, Sao Paulo, Brazil
Background/Purpose: Primary Antiphospholipid Syndrome (PAPS) patients, when submitted to Systemic Lupus Erythematosus (SLE) classification criteria, can be misclassified. The new 2019 ACR/EULAR classification criteria have…
Abstract Number: 1450 • ACR Convergence 2020
Integrative Analysis of DNA Methylation and Gene Expression in Monocytes from Primary Antiphospholipid Syndrome Patients Identifies a Gene Expression Signature Associated with Their Atherothrombotic Phenotype
Carlos Pérez-Sánchez¹, M Angeles Aguirre², Alejandra Maria Patiño-Trives¹, Laura Pérez-Sanchez³, Maria Luque-Tevar¹, Iván Arias de la Rosa¹, María-Carmen Abalos-Aguilera¹, Pedro Segui⁴, Javier Rodriguez-Ubreva⁵, Esteban Ballestar⁵, Nuria Barbarroja¹, Eduardo Collantes-Estévez² and Chary Lopez-Pedrera¹, ¹Rheumatology Department, Reina Sofia University Hospital/ Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ University of Cordoba, Cordoba, Spain, Cordoba, Spain, ²Rheumatology Department, Reina Sofia University Hospital/ Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC)/ University of Cordoba, Cordoba, Spain, Córdoba, Spain, ³Hospital Universitario Reina Sofía, Córdoba, Spain, ⁴IMIBIC/University of Cordoba/Reina Sofia Hospital, Cordoba, ⁵Josep Carreras Institute (IJC), Badalona, Spain
Background/Purpose: 1. To develop integrated analyses of the genome-wide DNA methylation and gene expression profiles in monocytes from APS patients and assess their involvement in…
Abstract Number: 0522 • ACR Convergence 2020
Development of New International Classification Criteria for Antiphospholipid Syndrome: Phase III Case Collection Results
Medha Barbhaiya¹, Stephane Zuily², Yasaman Ahmadzadeh³, Karen Costenbader⁴, Raymond Naden⁵ and Doruk Erkan⁶, ¹Hospital for Special Surgery, Barbara Volcker Center for Women and Rheumatic Diseases, New York, NY, ²Nancy Academic Hospital, Vandoeuvre-l�Nancy, France, ³Hospital for Special Surgery, New York, ⁴Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ⁵Department of Medicine, Middlemore Hospital, Auckland, Auckland, New Zealand, ⁶Hospital for Special Surgery, New York, NY
Background/Purpose: An international multi-disciplinary effort is underway to develop rigorous, new, consensus- and evidence-based classification criteria for Antiphospholipid Syndrome (APS). The methodological approach includes four…

1
2
3
…
10
Next Page »