Abstracts tagged "B cells"

Abstract Number: 958 • 2019 ACR/ARP Annual Meeting
Identification of IFN-γ-producing Effector B Cells in Humans: Their Relevance to the Pathogenesis of Systemic Lupus Erythematosus
Kazuhiko Higashioka¹, Masahiro Ayano ², Yasutaka Kimoto ³, Hiroki Mitoma ², Mitsuteru Akahoshi ², Yojiro Arinobu ², Koichi Akashi ¹, Takahiko Horiuchi ⁴ and Hiroaki Niiro ⁵, ¹Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan, ²Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Fukuoka, Japan, Fukuoka, Japan, ³Department of Internal Medicine, Kyushu University Beppu Hospital, Beppu, Japan, ⁴Department of Internal Medicine, Kyushu University Beppu Hospital, Beppu, Japan, Beppu, Japan, ⁵Clinical Education Centre, Kyushu University Hospital, Fukuoka, Japan, Fukuoka, Japan
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune, multi-systemic disease that potentially affects any organ in the body. Clinical efficacy of B cell-targeting therapy underscores…
Abstract Number: 9 • 2018 ACR/ARHP Annual Meeting
Integration of Cytokine Profiles with Distinct B-Cell Functions Reveals a Specific Micro-Environmental Framework in Autoimmune Diseases
Quentin Simon¹, Alexis Grasseau², Bénédicte Rouvière², Laetitia Le Pottier², Divi Cornec³, Maria Orietta Borghi⁴, Rocio Aguilar Quesada⁵, Yves Renaudineau^2,6, Marta Alarcón-Riquelme⁷, Jacques-Olivier Pers¹ and Sophie Hillion^2,6, ¹U1227, Université de Brest, Inserm, Labex IGO, CHU de Brest, Brest, France, ²U1227, Lymphocytes B et Autoimmunité, Université de Brest, Inserm, Brest, France, ³Hopital La Cavale Blanche, Brest, France, ⁴University of Milan, IRCCS Istituto Auxologico Italiano, Milan, Italy, ⁵Biobanco Del Sistema Sanitario Publico de Andalucía, Sevilla, Spain, ⁶CHU de Brest, Brest, France, ⁷Medical Genomics, Center for Genomics and Oncological Research (GENYO), Granada, Spain
Background/Purpose: The functional duality of B cells is central to balance immune homeostasis by regulating or promoting the immune response. However, the mechanisms by which…
Abstract Number: 108 • 2018 ACR/ARHP Annual Meeting
Sex-Specific Expression of CXorf21 Provide Molecular Explanation for the Fundamental Difference in Male and Female Immune Response: An Explanation for Female-Bias SLE Pathogenesis
R. Hal Scofield¹, Valerie M Harris², Biji T. Kurien³ and Kristi A. Koelsch⁴, ¹Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Oklahoma Medical Research Foundation, Oklahoma City, OK, ³University of Oklahoma Health Sciences Center, Oklahoma City, OK, ⁴Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Okalahoma City, OK
Background/Purpose: Systemic lupus erythematosus (SLE) is complex autoimmune disorders characterized by B cell hyperactivity resulting in autoantibody and cytokine production. Approximately 90% of patients are…
Abstract Number: 2077 • 2018 ACR/ARHP Annual Meeting
Pathological Osteogenesis and Inflammation in Experimental Spondyloarthritis Are Associated with Aberrant Type H Blood Vessels and Development of High Endothelial Venules Accompanied By Ectopic Lymphoid Structures in Bone Marrow
Merlijn Kaaij¹, Jan Piet van Hamburg², George Kollias³, Dominique Baeten¹, Leonie van Duivenvoorde¹ and Sander W. Tas², ¹Department of Clinical Immunology & Rheumatology and Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands, ²Amsterdam Rheumatology & immunology Center | Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands, ³Department of Physiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
Background/Purpose: Spondyloarthritis (SpA) is characterized by pathological osteogenesis, inflammation and extensive angiogenesis in inflamed tissues. TNF plays a central role in SpA pathology and transgenic…
Abstract Number: 10 • 2018 ACR/ARHP Annual Meeting
Fibroblast like Synoviocytes (FLS) Are Capable of Inducing Phenotypical Changes Including Class Switch Recombination (CSR) in Naive B Cells, but Additional Factors Are Required to Trigger Immunoglobulin Secretion
Dennis Bleck¹, Torsten Lowin², Matthias Schneider³ and Georg Pongratz⁴, ¹Rheumatology Policlinic & Hiller Research Unit, Medical Faculty, University Hospital, Heinrich-Heine University Duesseldorf, Duesseldorf, Germany, ²Department and Hiller Research Center for Rheumatology, University Hospital Duesseldorf, Duesseldorf, Germany, ³Department and Hiller Research Center for Rheumatology, Heinrich-Heine University, Duesseldorf, Germany, ⁴Dpt. of Rheumatology - Hiller Research Center Rheumatology, University Hospital Duesseldorf, Duesseldorf, Germany
Background/Purpose: Rheumatoid Arthritis (RA) is a disease characterized by chronic inflammation of the synovial tissue in joints. It is driven by highly activated B cells.…
Abstract Number: 111 • 2018 ACR/ARHP Annual Meeting
BAFF Inhibition Attenuates Fibrosis in Bleomycin-Induced Scleroderma Model Via Modulating the Regulatory and Effector B-Cell Balance
Takashi Matsushita¹, Tadahiro Kobayashi², Yasuhito Hamaguchi², Minoru Hasegawa³, Manabu Fujimoto⁴ and Kazuhiko Takehara¹, ¹Kanazawa University, Department of Dermatology, Kanazawa, Japan, ²Department of Dermatology, Kanazawa University, Kanazawa, Japan, ³University of Fukui, Department of Dermatology, Fukui, Japan, ⁴University of Tsukuba, Faculty of Medicine, Department of Dermatology, Tsukuba, Japan
Background/Purpose: Systemic sclerosis (SSc) is an autoimmune disease characterized by skin and lung fibrosis. Over 90% of patients with SSc are positive for autoantibodies. In…
Abstract Number: 2099 • 2018 ACR/ARHP Annual Meeting
Bruton’s Tyrosine Kinase (BTK) Inhibition Modulates Multiple Cell Types Instrumental in the Pathogenesis of Lupus Nephritis
Samantha Chalmers¹, Sayra Garcia¹, Elliott Klein², Jay S. Fine², Gerald Nabozny³, Meera Ramanujam² and Chaim Putterman⁴, ¹Albert Einstein College of Medicine, Bronx, NY, ²Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, CT, ³gerald.nabozny@boehringer-ingelheim.com, Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, CT, ⁴Division of Rheumatology, Albert Einstein College of Medicine, Bronx, NY, USA, Bronx, NY
Background/Purpose: Lupus nephritis (LN) is a serious manifestation of systemic lupus erythematosus (SLE) that adds substantial morbidity and mortality. Passive transfer of pre-formed nephritogenic antibodies…
Abstract Number: 13 • 2018 ACR/ARHP Annual Meeting
Shared Genetic Origins Among Anti-Proteinase 3 and Anti-Glomerular Basement Membrane Double-Positive Human Autoantibodies
Jeffrey R. Ord¹, Amy G. Clark¹ and Mary H. Foster², ¹Duke University Medical Center, Durham, NC, ²Medicine, Duke University Medical Center, Durham, NC
Background/Purpose: Patients with ANCA vasculitis and anti-glomerular basement membrane (GBM) nephritis (Goodpasture’s Disease) develop pathogenic autoantibodies (autoAb) that destroy the microvasculature in lungs and kidneys.…
Abstract Number: 534 • 2018 ACR/ARHP Annual Meeting
Increased Insulin Resistance and Impaired Beta-Cell Function in Patients with Rheumatoid Arthritis: The Role of Glucocorticoid Therapy?
Gorica Ristic¹, Vesna Subota², Dejana Stanisavljevic³, Branislava Glisic¹, Milan Petronijevic¹ and Dusan Stefanovic¹, ¹Department of Rheumatology and Clinical Immunology, Military Medical Academy, Belgrade, Serbia, ²Institute of Medical Biochemistry, Military Medical Academy, Belgrade, Serbia, ³Institute of Medical Statistics, Belgrade University School of Medicine, Belgrade, Serbia
Background/Purpose: Increased insulin resistance and impaired β-cell function have been demonstrated in rheumatoid arthritis (RA). The aim of the study was to analyze the association…
Abstract Number: 2288 • 2018 ACR/ARHP Annual Meeting
Preexisting Anti-Acetylcholine Receptor Autoantibodies and B Cell Lymphopenia Are Associated with the Development of Myositis in Thymoma Patients Treated with Avelumab, an Immune Checkpoint Inhibitor Targeting Programmed Death-Ligand 1
Andrew Mammen¹, Arun Rajan², Katherine Pak¹, Tanya Lehky³, Livia Casciola-Rosen⁴, Renee Donahue², Lauren Lepone², Anastasia Zekeridou⁵, Sean Pittock⁵, Raffit Hassan², Jeffrey Schlom² and James Gulley², ¹National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, ²NCI, NIH, Bethesda, MD, ³NINDS, NIH, Bethesda, MD, ⁴Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, MD, ⁵Neurology, Mayo Clinic, Rochester, MN
Background/Purpose: Immune checkpoint inhibitors (ICIs) enhance the immune response against tumors but may also trigger immune-related adverse events (IRAEs). Myositis following receipt of ICIs is…
Abstract Number: 14 • 2018 ACR/ARHP Annual Meeting
Individual RA-Derived Monoclonal Anti-Citrullinated Protein Autoantibodies (ACPA) Have Extensive Citrulline Multi-Reactivity Demonstrated By a Large-Scale Protein Array Platform
Peter Sahlström¹, Johanna Steen¹, Madeleine Jenning², Philip J. Titcombe^1,3, Ute Nonhoff^4,5, Ragnhild Stålesen⁶, Bianka Marklein², Daniel L. Mueller³, Zoltan Konthur⁴, Karin Lundberg⁷, Anca I. Catrina⁶, Lars Klareskog¹, Vivianne Malmström¹, Karl Skriner² and Caroline Grönwall⁸, ¹Rheumatology Unit, Dept. of Medicine, Karolinska Institutet, Stockholm, Sweden, ²Dept. of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, Berlin, Germany, ³The Center for Immunology, Dept. of Medicine, University of Minnesota Medical School, Minneapolis, MN, ⁴Engine GmbH, Hennigsdorf, Germany, ⁵Max Planck Institute of Colloids and Interfaces, Potsdam, Germany, ⁶Rheumatology Unit, Dept of Medicine, Karolinska Institutet, Stockholm, Sweden, ⁷Rheumatology Unit, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden, ⁸Dep. of Medicine, Rheumatology Unit, Karolinska Institutet, Stockholm, Sweden
Background/Purpose: The presence of serum IgG anti-citrullinated protein autoantibodies (ACPA) in rheumatoid arthritis (RA), is associated with more aggressive disease progression. Although ACPA have been…
Abstract Number: 595 • 2018 ACR/ARHP Annual Meeting
Predictive VALUE of CD19 SERUM Levels for LONG TERM Therapeutic Response and Utility As Biomarker for Optimization, in Rheumatoid Arthritis Patients Treated with Rituximab
Sheila Melchor¹, Esther Rodriguez-Almaraz², Jose L. Pablos³ and Patricia Carreira⁴, ¹Rheumatology, Rheumatology Department, Hospital Universitario 12 de Octubre, Spain., Madrid, Spain, ²Hospital Universitario 12 de Octubre, Madrid, Spain, ³Servicio de Reumatología, Rheumatology Department, Hospital 12 de Octubre, Spain, Madrid, Spain, ⁴Rheumatology Department. Hospital Universitario 12 de Octubre, Madrid, Spain
Background/Purpose: Rituximab (RTX) is directed against CD20 antigens in B lymphocytes (BL), producing selective depletion of BL, not affecting mature plasmatic cells, without immediate effect…
Abstract Number: 2671 • 2018 ACR/ARHP Annual Meeting
Development and First-in-Human Characterization of an ICOSL and BAFF Bispecific Inhibitor AMG 570 for SLE Treatment
Laurence E Cheng¹, Hailing Hsu², Martin Kankam³, Nicholas Siebers⁴, Randall Stoltz⁵, Lubna Abuqayyas², Bella Ertik⁶, Barbara Sullivan², Lei Zhou² and Jane R Parnes², ¹Amgen Inc., South San Francisco, CA, ²Amgen Inc., Thousand Oaks, CA, ³Vince and Associates Clinical Research, Inc.,, Overland Park, KS, ⁴Covance, Madison, WI, ⁵Covance, Evansville, IN, ⁶Amgen Inc, Boston, MA
Background/Purpose: Autoimmune diseases, including systemic lupus erythematosus (SLE), are associated with dysregulated T cell and B cell responses. AMG 570 is a bispecific molecule targeting…
Abstract Number: 17 • 2018 ACR/ARHP Annual Meeting
Kappa-Deleting Recombination Excision Circles (KREC) in B Cells and Serum B Cell Activating Factor (BAFF): Possible Aids in Predicting Juvenile Dermatomyositis Response to Rituximab
Amer khojah^1,2, Victoria Hans³, Wilfredo Marin⁴, Gabrielle A. Morgan⁴ and Lauren M. Pachman^5,6,7, ¹Division of Pediatric Rheumatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ²Division of Pediatric Allergy Immunology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ³Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ⁴Cure JM Program of Excellence in Myositis Research, Stanley Manne Children’s Research Institute, affiliated with Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, ⁵Cure JM Program of Excellence in Juvenile Myositis Research, Stanley Manne Children’s Research Institute, affiliated with Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL, ⁶Pediatric Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL, ⁷Rheumatology/Immunology, Ann & Robert H. Lurie Children's Hosptial of Chicago, Chicago, IL
Background/Purpose: Rituximab is used for the treatment of juvenile dermatomyositis (JDM) with variable success. Some of this variability is presumed to be related to the…
Abstract Number: 714 • 2018 ACR/ARHP Annual Meeting
A Predictive Clinical-Immunological Index for Infections Unveils Novel Innate and Adaptive Immunity Abnormalities As Key Risk Factors for Infections in a Cohort of Patients with Systemic Lupus Erythematosus
Diana Gómez-Martín^1,2, Jiram Torres-Ruíz³, Nancy R Mejía-Domínguez⁴, Guillermo Juárez-Vega⁵, Javier Merayo-Chalico³, Ana Barrera-Vargas³ and Jorge Alcocer-Varela¹, ¹Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico, ²Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador Zubirán, Mexico city, Mexico, ³Department of Immunology and Rheumatology, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador Zubirán, Mexico City, Mexico, ⁴Bioinformatics, Biostatistics and Computational Biology Unit, Red de Apoyo a la Investigación. Coordinación de la Investigación Científica, Universidad Nacional Autónoma de México, Mexico, Mexico, ⁵Flow Cytometry Unit, Red de Apoyo a la Investigación. Coordinación de la Investigación Científica, Universidad Nacional Autónoma de México, Mexico, Mexico
Background/Purpose: Patients with systemic lupus erythematosus (SLE) have multiple innate and adaptive immune response abnormalities. It is unknown whether they play a key role in…