Abstracts tagged "B-Lymphocyte"

Abstract Number: 0775 • ACR Convergence 2022
The Distribution and Frequency of Autoreactive B Cells Are Altered in Autoimmune Patients After TNF Inhibitor Treatment
Tam Quach¹, Meggan Mackay², Cynthia Aranow² and Anne Davidson², ¹Feinstein Institute for Medical Research, Manhasset, NY, ²Feinstein Institutes for Medical Research, Manhasset, NY
Background/Purpose: The development of new autoantibodies and secondary autoimmunity is a common and significant side effect of TNF inhibitors (TNFi) which are widely used to…
Abstract Number: 1713 • ACR Convergence 2022
Bank1 Signaling Shapes the Gut Microbiota Composition by Controlling the Gut Mucosal B-cell Response in Lupus
Georgina Galicia-Rosas, María Botía Sánchez, Daniel Toro-Domínguez, Lorena Albadalejo and Marta Alarcon-Riquelme, Center for Genomics and Oncological Research (GENYO), Granada, Spain
Background/Purpose: Mucosa-associated commensal bacteria have been shown to be involved in the pathogenesis of systemic lupus erythematosus (SLE). However, its exact role remains to be…
Abstract Number: 0011 • ACR Convergence 2022
B Cell Subsets Contributing to the Autoreactive Plasma Cell Pool in Lyn-/- Mice
Kristina Ottens, Jalyn Schneider and Anne Satterthwaite, UT Southwestern Medical Center, Dallas, TX
Background/Purpose: Systemic Lupus Erythematosus (SLE) is characterized by autoantibodies (autoAbs) against nucleic acid containing antigens. These antibodies form immune complexes that promote inflammation and cause organ…
Abstract Number: 0778 • ACR Convergence 2022
TNF Inhibitors Display a Modulatory Effect on Serological and Cellular Vaccine Response in Patients with Chronic Inflamatory Diseases
Ulf Geisen¹, Ruben Rose², Dennis Berner³, Hayley Reid³, Jan Schirmer⁴, Florian Tran⁵, Sascha Gerdes⁶, Stefan Schreiber⁷, Andi Krumbholz¹, Petra Bacher⁷ and Bimba Hoyer¹, ¹UKSH Kiel, Kiel, Germany, ²Dep Infectiology UKSH Kiel, Kiel, Germany, ³Dep Rheumatology and clinical Immunology, UKSH Kiel, Kiel, Germany, ⁴University Medical Center Schleswig-Holstein, Kiel, Germany, ⁵Medical Department, UKSH Kiel, Kiel, Germany, ⁶Dermatology, UKSH Kiel, Kiel, Germany, ⁷Institute of Clinical Molecular Biology, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
Background/Purpose: Background: The ongoing pandemic is an immunological challenge when using immune modulating drugs. The mRNA vaccines against SARS-CoV-2 are safe and efficient in most…
Abstract Number: 1715 • ACR Convergence 2022
Ezh2 Knockout in B Cells Impairs Plasmablast Differentiation and Ameliorates Lupus-like Disease in MRL/lpr Mice
Xiaoqing Zheng¹, Mikhail Dozmorov², Colleen Strohlein¹, Sheldon Bastacky¹ and Amr Sawalha¹, ¹University of Pittsburgh, Pittsburgh, PA, ²Virginia Commonwealth University, Richmond, VA
Background/Purpose: Enhancer of zeste homolog 2 (EZH2) has been shown to regulate early B cell development and the differentiation of antibody secreting cells (ASCs). We…
Abstract Number: 0012 • ACR Convergence 2022
Role of Type L IFN Signaling on B Cell Pathogenicity in Early Sjögren’s Disease in Mouse Model
Merri-Grace Allred and Scott Lieberman, University of Iowa, Iowa City, IA
Background/Purpose: Sjogren's disease is a chronic autoimmune disease autoimmune disease characterized by foci of inflammation of the lacrimal and salivary glands. As disease progresses, B…
Abstract Number: 0780 • ACR Convergence 2022
B-cell Reconstitution Is Associated with COVID-19 Booster Vaccine Responsiveness in Previously Seronegative Rituximab Treated Rheumatic Disease Patients
Kaitlin Schultz, Deanna Jannat-Khah, DrPH, MSPH and Robert Spiera, Hospital for Special Surgery, New York, NY
Background/Purpose: Booster doses of SARS-CoV-2 vaccines continue to serve as an important strategy for containing the pandemic and may be especially important to rituximab treated…
Abstract Number: 1868 • ACR Convergence 2022
B Cell Count in Juvenile Dermatomyositis: A Biomarker of Disease
Christopher Costin¹, Gabrielle Morgan², Amer Khojah³ and Lauren Pachman⁴, ¹Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ²Ann & Robert H. Lurie Children's Hospital of Chicago and Northwestern University Feinberg School of Medicine, Chicago, IL, ³Umm Al-Qura University, Makkah, Saudi Arabia, ⁴Northwestern's Feinberg School of Medicine. Ann and Robert H. Lurie Children's Hospital of Chicago; Stanley Manne Children's Research Institute of Chicago, Lake Forest, IL
Background/Purpose: Juvenile Dermatomyositis(JDM) is heterogenous disease with many presentations. The underlying immune pathophysiology of JDM remains complex with varying phenotypes. B Cells remain a critical…
Abstract Number: 0013 • ACR Convergence 2022
Binding of CXCL13 with Heparan Sulfate of Syndecan-1 Plays an Important Role in Pathogenesis of Sjögren’s Syndrome
Eon Jeong Nam¹, Na Ri Kim¹ and Gun Woo Kim², ¹Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea, ²Daegu Fatima Hospital, Daegu, Republic of Korea
Background/Purpose: Sjögren's syndrome (SS) is a chronic autoimmune disorder with lymphocytic infiltration in exocrine and non-exocrine epithelia, in which epithelial cells play a critical role…
Abstract Number: 0781 • ACR Convergence 2022
Rituximab Treated Patients with Hypogammaglobulinemia Are Less Likely to Seroconvert Following SARS-CoV-2 Vaccine Supplemental Dose
Daniel Magliulo¹, Vasileios Kyttaris¹ and Emily Rose², ¹Beth Israel Deaconess Medical Center, Boston, MA, ²Beth Israel Deaconess Medical Center, West Roxbury, MA
Background/Purpose: Rituximab (RTX) is a very effective treatment for autoimmune rheumatic diseases (AIRD). However, treatment increases risk of infections and impairs responses to vaccines. Prior…
Abstract Number: 1869 • ACR Convergence 2022
Looking for BlyS(BAFF) in Juvenile Dermatomyositis: A New Biomarker of Disease Activity
Christopher Costin¹, Gabrielle Morgan², Amer Khojah³ and Lauren Pachman⁴, ¹Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ²Ann & Robert H. Lurie Children's Hospital of Chicago and Northwestern University Feinberg School of Medicine, Chicago, IL, ³Umm Al-Qura University, Makkah, Saudi Arabia, ⁴Northwestern's Feinberg School of Medicine. Ann and Robert H. Lurie Children's Hospital of Chicago; Stanley Manne Children's Research Institute of Chicago, Lake Forest, IL
Background/Purpose: B Cell Activating Factor (BAFF) is a cytokine that drives B Cell proliferation and maturation. B Cells remain an important factor in JDM immune…
Abstract Number: 0014 • ACR Convergence 2022
The Expanded CD21 Low B Cell Subpopulation in Ankylosing Spondylitis Consists Mainly of Antigen-Inexperienced Cells
Rick Wilbrink¹, Linda van der Weele², Anneke Spoorenberg¹, Niek De Vries², Frans Kroese¹ and Gwenny Verstappen¹, ¹University Medical Center Groningen, Groningen, Netherlands, ²University Medical Center Amsterdam, Amsterdam, Netherlands
Background/Purpose: The role of B cells in the pathogenesis of ankylosing spondylitis (AS) remains relatively understudied. Nevertheless, available evidence shows presence of B cells at…
Abstract Number: 0782 • ACR Convergence 2022
Low Circulating B Cells Correlate with Unresponsiveness to COVID-19 Vaccination Among Patients Treated with Rituximab
Christopher Halbur¹, Erin Sternhagen², Mohamad Dave Dimachkie² and Petar Lenert², ¹University of Iowa Carver College of Medicine, Iowa City, IA, ²University of Iowa Hospitals and Clinics, Iowa City, IA
Background/Purpose: Rituximab impairs humoral immunity by depleting CD20+ B cells. Previous studies have demonstrated that patients on rituximab have decreased immune response to COVID-19 vaccination.…
Abstract Number: 2017 • ACR Convergence 2022
Characteristics and Prognosis Factors of Relapse or Death for Non-Hodgkin Lymphomas in Primary Sjögren Syndrome
Juliette Rocca¹, Maxime Beydon², Veronique Le Guern³, Eric Hachulla⁴, Jean Jacques Dubost⁵, sandrine jousse joulin⁶, Valerie Devauchelle⁷, Jacques-Eric Gottenberg⁸, Olivier Vittecoq⁹, Christian Lavigne¹⁰, Jean Schmidt¹¹, Christian Marcelli¹², Claire Larroche¹³, Xavier Mariette¹⁴, Raphaèle Seror¹⁵ and Gaetane Nocturne¹⁶, ¹APHP, Paris, France, ²Université Paris Cité, Paris, France, ³Hôpital Cochin, Paris, France, ⁴University of Lille, LILLE, France, ⁵University Hospital of Clermont Ferrand, Rheumatology, Clermont-Ferrand, France, ⁶Roche, Brest, France, ⁷Université de Bretagne Occidentale, Brest, France, ⁸University of Strasbourg, Strasbourg, France, ⁹CHU de Rouen, ROUEN, France, ¹⁰CHU Angers, Angers, France, ¹¹CHU Amiens, Amiens, France, ¹²CHU Caen, Caen, France, ¹³APHP, Bobigny, France, ¹⁴Paris-Saclay University, Rueil Malmaison, Ile-de-France, France, ¹⁵University Hospital Paris-Saclay, Le Kremlin Bicêtre, France, ¹⁶APHP, Le Kremlin Bicêtre, France
Background/Purpose: Primary Sjögren Syndrome (pSS) patients present an increased risk of Non-Hodgkin lymphoma (NHL). There is no consensus on the therapeutic management of low-grade NHL.…
Abstract Number: 0016 • ACR Convergence 2022
Distinct Transcriptomic and Epigenetic Profiles Mediated by Disease Activity in SLE
Yusho Ishii, James Rose, Kevin Cashman, Sakeenah Hicks, Tsuneo Deguchi, Christopher Scharer, Scott Jenks, Jeremy Boss and Iñaki Sanz, Emory University, Atlanta, GA
Background/Purpose: SLE is an autoimmune disease heterogenous for symptoms, disease severity and therapeutic response. This heterogeneity makes stratifying patients difficult. B cells from SLE patients…

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