Abstracts tagged "B cells"

Abstract Number: 2933 • 2016 ACR/ARHP Annual Meeting
HLA-DR3 Restricted T Cell Response to Smd and Ro60 Reveals Multiple Cross-Reactive Intra- and Inter-Molecular T Cell Epitopes: Unique Antigenic Structures of Lupus-Related Auto-Antigens and the Basis for B Cell Epitope Spreading
Zhenhuan Zhao¹, Jiling Ren¹, Chao Dai², Carol Kannapell¹, Qian Wang³, Felicia Gaskin⁴ and Shu Man Fu⁵, ¹Medicine/CIIR/Rheumatology, University of Virginia, Charlottesville, VA, ²Center for Immunity, Inflammation, and Regenerative Medicine, University of Virginia, Charlottesville, VA, ³University of Virginia, Charlottesville, VA, ⁴Psychiatry and Neurobehavioral Sciences, University of Virginia, Charlottesville, VA, ⁵Department of Medicine, University of Virginia, Charlottesville, VA
Background/Purpose: Complex auto-Abs targeting nuclear proteins is a hallmark of systemic lupus erythematosus (SLE). It is documented that this complexity is the result of “B cell…
Abstract Number: 654 • 2016 ACR/ARHP Annual Meeting
The Level of B-Cell Active Cytokines and Soluble B-Cell Activating Factor/a Proliferation-Inducing Ligand Receptors in Patients with Primary Sjogren’s Syndrome
You Jung Ha¹, Jaehyung Hur¹, Sang Wan Chung¹, Eun Ha Kang², Yeong Wook Song^3,4 and Yun Jong Lee⁵, ¹Division of Rheumatology, Department of Internal Medicine, Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea, ²Division of Rheumatology, Department of Internal Medicine, Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea, The Republic of, ³WCU Department of Molecular Medicine and Biopharmaceutical Sciences, Medical Research Institute, WCU Department of Molecular Medicine and Biopharmaceutical Sciences, Medical Research Institute, Seoul National University College of Medicine, Seoul, Korea, The Republic of, ⁴Department of Internal Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul, South Korea, ⁵Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
Background/Purpose: Primary Sjögren`s syndrome (pSS) is an autoimmune diseases characterized by lymphocytic infiltration of exocrine glands and dysregulated proliferation and differentiation of B cells. Two…
Abstract Number: 1089 • 2016 ACR/ARHP Annual Meeting
Decreased B Cell Activation-Induced Apoptosis in Cells Overexpressing Interferon Regulatory Factor 5 (IRF5), a Gene Associated with Risk for Systemic Lupus Erythematosus and Other Autoimmune Diseases
Brian Poole¹, Caleb Cornaby², Kalare Eberting², Wesley Cheney², Grant Walker², Craig Smith², Tosh Dowling² and Emily Mello², ¹Brigham Young University, Provo, UT, ²Microbiology and Molecular Biology, Brigham Young University, Provo, UT
Background/Purpose: The transcription factor Interferon Regulatory Factor 5 (IRF5) plays a crucial role in the functioning of several cell types such as macrophages, dendritic, and…
Abstract Number: 2110 • 2016 ACR/ARHP Annual Meeting
Synovial Fibroblasts Regulate B Cell Survival Via B Cell Activating Factor of the TNF Family (BAFF)
Torsten Lowin¹, Matthias Schneider² and Georg Pongratz³, ¹Rheumatology, University Hospital Duesseldorf, Duesseldorf, Germany, ²Rheumatology - Hiller Research Center Rheumatology, University Hospital Duesseldorf, Düsseldorf, Germany, ³Rheumatology - Hiller Research Center Rheumatology, University Hospital Duesseldorf, Duesseldorf, Germany
Background/Purpose: In rheumatoid arthritis (RA), synovial fibroblasts (SF) are one main contributor of joint destruction since they resist apoptosis and secrete pro-inflammatory cytokines and matrix…
Abstract Number: 3163 • 2016 ACR/ARHP Annual Meeting
SEC16A and Intracellular Trafficking Abnormalities in Axial Spondyloarthritis
Fanxing Zeng¹, Zhenbo Zhang¹, Vidya Ranganathan², Darren Orielly³, Proton Rahman⁴ and Nigil Haroon⁵, ¹Krembil research institute, Toronto, ON, Canada, ²University Health Network, Toronto, ON, Canada, ³Faculty of Medicine, Memorial University of Newfoundland, St. John’s, NF, Canada, ⁴Rheumatology, St Claires Mercy Hospital, St Johns, NF, Canada, ⁵Rheumatology, Toronto Western Hospital, University of Toronto, Spondylitis Clinic, Toronto, ON, Canada
Background/Purpose: The pathogenesis of Axial Spondyloarthritis (AxSpA) is not well understood. A rare 9 base-pair deletion of SEC16A was recently identified to be strongly associated with AxSpA in a multiplex…
Abstract Number: 655 • 2016 ACR/ARHP Annual Meeting
Comprehensive Immuno-Phenotyping of Follicular Helper T Cells and B Cell Subpopulations in Primary Sjögren’s Syndrome
Nida Meednu¹, Cécile Seifert², Jennifer Barnard³, Madhu Ramaswamy⁴, Jeffrey Riggs⁴, Alex Rosenberg³, Jamie Biear⁵, Gianluca Carlesso⁴, Ralf G. Thiele⁶, Andreea Coca³, Fanny Monneaux², Helene Dumortier², Jacques-Eric Gottenberg^2,7 and Jennifer H. Anolik³, ¹Medicine- Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, ²CNRS, Immunopathologie et Chimie Thérapeutique/Laboratory of Excellence Medalis, Institut de Biologie Moléculaire et Cellulaire, Strasbourg, France, ³University of Rochester Medical Center, Rochester, NY, ⁴MedImmune LLC, Gaithersburg, MD, ⁵Rheumatology, University of Rochester Medical Center, Rochester, NY, ⁶Medicine, University of Rochester Medical Center, Rochester, NY, ⁷Department of Rheumatology, Strasbourg University Hospital, Strasbourg, France
Background/Purpose: Primary Sjögren’s syndrome (pSS) is a systemic autoimmune disease characterized by immune cell infiltration in the salivary glands resulting in ocular and oral dryness.…
Abstract Number: 1090 • 2016 ACR/ARHP Annual Meeting
CpG-Stimulated B Cells Require Glutaminolysis for Glycolysis, Mitochondrial Respiration, and Cytokine Production
Matthew Cheung¹, Dongyue Huang¹, Doujiao Wu², Edward Pearce³ and Alfred Kim¹, ¹Rheumatology, Washington University School of Medicine, Saint Louis, MO, ²Pathology & Immunology, Washington University School of Medicine, Saint Louis, MO, ³Immunometabolism, Max Planck Institute of Immunobiology and Epigenetics, Freiburg im Breisgau, Germany
Background/Purpose: B cells contribute to disease pathophysiology through several mechanisms, including cytokine secretion. A wide variety of stimuli can activate B cells to produce cytokines…
Abstract Number: 2112 • 2016 ACR/ARHP Annual Meeting
Disease-Activity Associated Autoantibodies to Malondialdehyde-Modified Proteins Can be Isolated from Synovial B Cells in RA
Caroline Grönwall¹, Khaled Amara¹, Uta Hardt¹, Lelise Getu², Jeffrey D. Greenberg³, Robert M Clancy³, Vivianne Malmström⁴ and Gregg J. Silverman³, ¹Department of Medicine, Rheumatology Unit, Karolinska Institutet, Stockholm, Sweden, ²Department of Medicine, New York University School of Medicine, New York, NY, ³Department of Medicine, Division of Rheumatology, New York University School of Medicine, New York, NY, ⁴Department of Medicine, Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
Background/Purpose: Malondialdehyde (MDA) is a naturally occurring reactive aldehyde that arises during apoptosis or as a consequence of elevated reactive oxygen species and lipid peroxidation.…
Abstract Number: 3244 • 2016 ACR/ARHP Annual Meeting
Observations of Early and Late B Cell Alterations during Belimumab Treatment in Patients with Systemic Lupus Erythematosus Using Mass Cytometry (CyTOF)
Ioannis Parodis¹, Daniel Ramsköld¹, Petter Brodin², Agneta Zickert¹, Lakshmikanth Tadepally², Yang Chen², Jaromir Mikes², Adnane Achour², Iva Gunnarsson¹ and Vivianne Malmström¹, ¹Department of Medicine, Rheumatology Unit, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ²Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
Background/Purpose: Belimumab is a recombinant monoclonal antibody that inhibits soluble B lymphocyte stimulator (BLyS), also known as BAFF or TNFSF13B, and is approved for treating…
Abstract Number: 660 • 2016 ACR/ARHP Annual Meeting
Expression of the Chemokine Receptor CXCR5 Is Decreased in the Periphery of Patients with Primary Sjogren’s Syndrome
Marie Wahren-Herlenius¹, Lara Adnan Aqrawi¹, Margarita Ivanchenko¹, Albin Björk¹, Jorge Ramírez¹, Marika Kvarnström¹, Janicke Cecilie Liaaen Jensen² and Kathrine Skarstein³, ¹Karolinska Institutet, Stockholm, Sweden, ²University of Oslo, Oslo, Norway, ³University of Bergen, Bergen, Norway
Background/Purpose: CXCR5 is a chemokine receptor expressed on B and T cell subsets, which binds the CXCL13 ligand produced by follicular dendritic cells. It is…
Abstract Number: 1092 • 2016 ACR/ARHP Annual Meeting
Expansion of Age Associated B Cells in Murine Lupus Is Regulated By DEF6 and Its Homologue Swap-70
Michela Manni¹, Sanjay Gupta², Edd Ricker³, Yurii Chinenov⁴, Rolf Jessberger⁵ and Alessandra B. Pernis^2,6,7,8, ¹Autoimmunity and Inflammation Program, Hospital for Special Surgery, New York, NY, ²Autoimmunity & Inflammation Research Program, Hospital for Special Surgery, New York, NY, ³Graduate Program in Immunology and Microbial Pathogenesis, Weill Cornell Graduate School of Medical Sciences, New York, NY, ⁴Arthritis & Tissue Degeneration Program, Hospital for Special Surgery, New York, NY, ⁵Dresden University of Technology, Dresden, Dresden, Germany, ⁶Autoimmunity & Inflammation, Hospital for Special Surgery, New York, NY, ⁷David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, ⁸Department of Medicine, Weill Cornell Medical College, New York, NY
Background/Purpose: Age-associated B cells (ABCs) are a novel B cell subset, which expresses CD11c and preferentially accumulates with age in female mice. Increased expansion of…
Abstract Number: 2116 • 2016 ACR/ARHP Annual Meeting
Cytokines Inhibition Modulates Activation and Homing Receptor of Different Peripheral Memory B Cell Subsets in RA
Zafar Mahmood¹, Marc Schmalzing², Michael Gernert³, Thomas Dörner⁴ and Hans-Peter Tony³, ¹Department of Medicine II, Rheumatology/Clinical Immunology, University of Würzburg, Würzburg, Germany, ²Rheumatology/Clinical Immunology, Medical Clinic II, University Clinic Wuerzburg, Würzburg, Germany, ³Rheumatology/Immunology, Medical Clinic II, University Clinic Wuerzburg, Würzburg, Germany, ⁴Charité - Universitätsmedizin Berlin, Berlin, Germany
Background/Purpose: With the advent of B cell targeted therapies the modulation of memory B cells seems to be a prime target. Human peripheral memory B…
Abstract Number: 746 • 2016 ACR/ARHP Annual Meeting
Discrepancy in Rituximab-Induced B-Cell Depletion in Peripheral Blood and the Kidney and Relationship with Clinical Response in Patients with Lupus Nephritis
Ruth J. Pepper¹, Venkat Reddy², Scott Henderson³ and Maria J. Leandro⁴, ¹UCL Centre for Nephrology, Royal Free Hospital, London, United Kingdom, ²Centre for Rheumatology, Division of Medicine, University College London, London, United Kingdom, ³UCL Centre for Nephrology, University College London, London, United Kingdom, ⁴Centre for Rheumatology, Division of Medicine, University College London, London, United Kingdom
Background/Purpose: Patients with lupus nephritis (LN) achieve variable clinical response following Rituximab (RTX) based B-cell depletion therapy, with rituximab treatment aiming to decrease the use…
Abstract Number: 1449 • 2016 ACR/ARHP Annual Meeting
The Efficiency of the Regulation of Ca2+ Entry through Calcium Release-Activated Calcium Channel in the Treatment of Rheumatoid Arthritis
Shuang Liu¹, Hitoshi Hasegawa², Takeshi Kiyoi³, Tatsuya Sawasaki⁴ and Kazutaka Maeyama⁵, ¹Dept. Pharmacology,, Ehime University Graduate School of Medicine, Toon-shi, Japan, ²Department of Bioregulatory Medicine, Ehime University Graduate School of Medicine, Toon, Japan, ³Bioscience, Integrated Center for Sciences, Ehime University, Ehime, Japan, ⁴Division of Cell-Free Sciences, Proteo-Science Center, Ehime University, Matsuyama, Japan, ⁵Department of Pharmacology, Informational Biomedicine, Ehime University Graduate School of Medicine, Toon-shi, Ehime, Japan
Background/Purpose: The regulation of Ca2+ entry by targeting a store-operated calcium release-activated channel (CRAC), known as ORAI, has shown benefits in the treatment of rheumatoid…
Abstract Number: 2117 • 2016 ACR/ARHP Annual Meeting
B Cell Phenotype and in Vitro Function in Patients with Rheumatoid Arthritis Developing Low Serum Immunoglobulins after Multiple Cycles of Rituximab
Geraldine Cambridge¹, Rita A. Moura², Venkat Reddy³ and Maria J. Leandro¹, ¹Centre for Rheumatology, Division of Medicine, University College London, London, United Kingdom, ²Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal, Lisbon, Portugal, ³Centre for Rheumatology, Division of Medicine, University College London, London, United Kingdom
Background/Purpose: Repeat treatment with rituximab (RTX) predisposes some patients with rheumatoid arthritis (RA) to develop low levels of serum immunoglobulins (Igs). Understanding B cell function…

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