Abstracts tagged "B cells"

Abstract Number: 3157 • 2015 ACR/ARHP Annual Meeting
B Cell Profile As a Biomarker of Disease Segmentation and Flare Prognosis in SLE
Chungwen Wei¹, Bridget Neary², Jamie Biear³, Jennifer Barnard^3,4, Michelle Petri⁵, Alex Rosenberg⁶, Jennifer H. Anolik⁷ and Ignacio Sanz¹, ¹Rheumatology, Emory University, Atlanta, GA, ²Emory University, Atlanta, GA, ³Rheumatology, University of Rochester, Rochester, NY, ⁴Allergy, Immunology and Rheumatology, University of Rochester, Rochester, NY, ⁵Rheumatology, Johns Hopkins University Hospital, Baltimore, MD, ⁶University of Rochester, Rochester, NY, ⁷University of Rochester Medical Center, Rochester, NY
Background/Purpose: B cell abnormalities in SLE are well-established contributors to disease pathogenesis. Perturbation of B cell homeostasis in SLE is often described separately for each…
Abstract Number: 1104 • 2015 ACR/ARHP Annual Meeting
Mouse B Cells Require Glucose and Free Fatty Acids As Carbon Sources for Cytokine and Chemokine Secretion
Doujiao Wu¹, Dongyue Huang², Edward Pearce¹ and Alfred Kim², ¹Pathology & Immunology, Washington University School of Medicine, Saint Louis, MO, ²Rheumatology, Washington University School of Medicine, Saint Louis, MO
Background/Purpose: B cells contribute to disease pathophysiology through several mechanisms, including cytokine and chemokine secretion. A wide variety of stimuli can activate B cells including…
Abstract Number: 1667 • 2015 ACR/ARHP Annual Meeting
Clinical Parameters and B Cell Subsets As Biomarkers of Response to Tocilizumab in Rheumatoid Arthritis
Anna Laura Fedele, Barbara Tolusso, Elisa Gremese, Silvia Canestri, Clara Di Mario, Marcin Nowik and Gianfranco Ferraccioli, Division of Rheumatology, Institute of Rheumatology, Catholic University of the Sacred Heart, Rome, Italy
Background/Purpose: Tocilizumab (TCZ) is an effective treatment for Rheumatoid Arthritis (RA) and it is a modifier of B cell subsets in vivo, inducing changes in…
Abstract Number: 1105 • 2015 ACR/ARHP Annual Meeting
The IgG/IgG4 mRNA Ratio By Quantitative PCR Accurately Diagnoses IgG4-Related Disease and Predicts Treatment Response
Lowiek Hubers¹, Marieke Doorenspleet², Paulus Klarenbeek³, Emma Culver⁴, Lucas Maillette de Buy Wenniger⁵, Roger Chapman⁴, Stan Van de Graaf⁶, Joanne Verheij⁷, Thomas Van Gulik⁸, Frank Baas⁹, Ellie Barnes⁴, Ulrich Beuers¹ and Niek De Vries³, ¹Dept. of Gastroenterology & Hepatology and Tytgat Institute of Liver and Intestinal Research, Dept. of Gastroenterology & Hepatology and Tytgat Institute of Liver and Intestinal Research, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ²Dept. of Clinical Immunology & Rheumatology, Amsterdam Rheumatology and immunology Center | Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ³Dept. of Clinical Immunology & Rheumatology, Amsterdam Rheumatology and immunology Center, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁴Translational Gastroenterology Unit and NDM Oxford University, Translational Gastroenterology Unit and NDM Oxford University, John Radcliffe Hospital/Oxford University, Oxford, United Kingdom, ⁵1Dept. of Gastroenterology & Hepatology and Tytgat Institute of Liver and Intestinal Research, Dept. of Gastroenterology & Hepatology and Tytgat Institute of Liver and Intestinal Research, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁶Dept. of Gastroenterology & Hepatology and Tytgat Institute of Liver and Intestinal Research,, Dept. of Gastroenterology & Hepatology and Tytgat Institute of Liver and Intestinal Research, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁷Dept. of Pathology, Dept. of Pathology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁸Dept. of Surgery, Dept. of Surgery, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁹Dept. of Genome Analysis, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands
Background/Purpose : IgG4-associated cholangitis (IAC) and autoimmune pancreatitis (AIP) are major manifestations of IgG4-related disease (IRD). Misdiagnosis and inadequate treatment are common since IAC and…
Abstract Number: 1668 • 2015 ACR/ARHP Annual Meeting
Patterns of Relapse in the Rheumatoid Arthritis Cohort Treated with Rituximab at University College London
Elena Becerra, Geraldine Cambridge, Inmaculada de la Torre and Maria J. Leandro, Centre for Rheumatology, Department of Medicine, University College London, London, United Kingdom
Patterns of relapse in the Rheumatoid Arthritis cohort treated with Rituximab at University College LondonBackground/Purpose: Two patterns of relapse were defined in the first studies…
Abstract Number: 1107 • 2015 ACR/ARHP Annual Meeting
Inhibition of B Cell Activation and Plasma Cell Differentiation By Epratuzumab, a Humanized Monoclonal Antibody Targeting CD22
Natalia V. Giltiay¹, Geraldine L. Shu², Anthony Shock³ and Edward A. Clark^1,2, ¹Division of Rheumatology, Department of Medicine, University of Washington, Seattle, WA, ²Department of Immunology, University of Washington, Seattle, WA, ³UCB Pharma, Slough, United Kingdom
Background/Purpose: Systemic lupus erythematosus (SLE) is characterized by B cell hyperactivity and production of autoantibodies. Treatment of patients with moderate-to-severe SLE with epratuzumab, a humanized…
Abstract Number: 1754 • 2015 ACR/ARHP Annual Meeting
BANK1 Controls the Development of SLE By Modulating TLR7 Signaling and Type I IFN-Induced Translation Initiation Pathway in B Cells
Ying-Yu Wu¹, Ramesh Kumar², Harini Bagavant¹ and Marta E. Alarcon Riquelme³, ¹Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ²Oklahoma Medical Research Foundation, Oklahoma Cty, OK, ³Arthritis & Clinical Immunology, Oklahoma Medical Research Foundation, Center for Genomics and Oncological Research Pfizer-University of Granada-Junta de Andalucia, Oklahoma City, OK
Background/Purpose: BANK1 is a susceptibility gene for SLE, and we have shown that stimulation of TLR9 agonist leads to a reduction in the activation of…
Abstract Number: 1 • 2015 ACR/ARHP Annual Meeting
The Integrin Very Late Antigen-4 Plays a Key Role in the Recruitment of B Cells at the Inflammatory Foci
Estefanía Armas-González¹, Ana Díaz-Martín², María Jesús Domínguez-Luis³, María Teresa Arce-Franco² and Federico Díaz-González⁴, ¹Universidad de La Laguna, Pharmacology Department, Tenerife, Spain, ²Hospital Universitario de Canarias, Rheumatology Service, Tenerife, Spain, ³CIBICAN, Center of Biomedical Research of the Canary Islands, University of La Laguna, Tenerife, Spain, ⁴Investigation Unit, Sociedad Española de Reumatológía, Madrid, Spain
Background/Purpose: Experimental data suggest that B cells must migrate and accumulate into the synovial membrane to exert their pathogenic role in rheumatoid arthritis (RA). Leukocyte…
Abstract Number: 1108 • 2015 ACR/ARHP Annual Meeting
Epratuzumab, a Monoclonal Antibody Targeting CD22 on B Cells, Stimulates the Phosphorylation of Upstream Inhibitory Signals of the B Cell Receptor
Simon Lumb¹, Sarah J. Fleischer², Capucine Daridon², Alison Maloney¹, Anthony Shock¹ and Thomas Dorner², ¹UCB Pharma, Slough, United Kingdom, ²Charité University Medicine Berlin, CC12, Dept. Medicine/Rheumatology and Clinical Immunology and German Rheumatism Research Center Berlin (DRFZ), a Leibniz Institute, Berlin, Germany
Background/Purpose: Epratuzumab, a humanized monoclonal antibody targeting CD22, is currently in phase 3 clinical trials in patients with systemic lupus erythematosus (SLE). Previous work suggests…
Abstract Number: 1822 • 2015 ACR/ARHP Annual Meeting
Pharmacokinetics of the Selective B-Cell Lymphoma-2 (Bcl-2) Inhibitor, ABT-199, in Female Subjects with Systemic Lupus Erythromatosus
Mukul Minocha¹, Shekman Wong², Jiewei Zeng², Peng Lu³, Jeroen Medema² and Ahmed Othman⁴, ¹Clinical Pharmacology and Pharmacometrics, AbbVie, North Chicago, IL, ²AbbVie Inc., North Chicago, IL, ³AbbVie Inc., Worcester, MA, ⁴AbbVie, North Chicago, IL
Background/Purpose: Selective Inhibition of Bcl-2 pathway may offer clinical efficacy in Systemic Lupus Erythromatosus (SLE) by restoring apoptosis in autoreactive cells, which may lead to…
Abstract Number: 502 • 2015 ACR/ARHP Annual Meeting
Decreased Vaccine Responses in Rheumatoid Arthritis Patients Receiving Anti-TNF Treatment and Relationship to B Cell Subsets
Jennifer Barnard¹, Nida Meednu², Kelly Callahan¹, Karen Boyle³, Lynette Keyes-Elstein³, Beverly Welch⁴, Ellen Goldmuntz⁵ and Jennifer H. Anolik¹, ¹University of Rochester Medical Center, Rochester, NY, ²Medicine- Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, ³Rho Federal Systems, Inc., Chapel Hill, NC, ⁴6610 Rockledge Dr., NIAID/NIH, Bethesda, MD, ⁵DAIT, NIAID/NIH, Bethesda, MD
Background/Purpose: TNF is a key pro-inflammatory cytokine in normal immune responses and pathologically in the rheumatoid arthritis (RA) synovium, thus representing a key treatment target…
Abstract Number: 1110 • 2015 ACR/ARHP Annual Meeting
A Proliferative Inducing Ligand (APRIL) Promotes IL-10 Production of Human B Cells
Charlotte Hua¹, Rachel Audo², Nataliya Yeremenko³, Dominique Baeten⁴, Michael Hahne², Bernard Combe⁵, Jacques Morel⁵ and Claire I. Daien⁵, ¹Department of Rheumatology, Lapeyronie Hospital and Montpellier University, Montpellier, France, ²IGMM-CNRS UMR5535, Montpellier, France, ³Academic medical center, University of Amsterdam, Amsterdam, France, ⁴1Academic Medical Center / University of Amsterdam, Amsterdam, Netherlands, ⁵Department of rheumatology, Lapeyronie Hospital and Montpellier University, Montpellier, France
Background/Purpose: B cells may have a negative regulatory role, mainly mediated by interleukin 10 (IL-10). We recently showed that regulatory B-cell functions are impaired in…
Abstract Number: 1848 • 2015 ACR/ARHP Annual Meeting
Increased Expression of Bruton Tyrosine Kinase in Patients with Lupus Nephritis and Its Clinic Significance
Wei Kong, Wei Deng, Xuebing Feng, Genhong Yao, Weiwei Chen, Xiaojun Tang, Yue Sun, Saisai Huang, Zhuoya Zhang, Bingyu Shi and Lingyun Sun, Department of Rheumatology and Immunology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune disease manifested by multiorgan impairment including glomerulonephritis, cutaneous lesions and arthritis. B cells participate in the onset…
Abstract Number: 602 • 2015 ACR/ARHP Annual Meeting
Efficacy of Very Low Dose (100mg) Rituximab in Active Rheumatoid Arthritis Despite Combination DMARD-Single Center, Prospective, Observational Study
Padmanabha Shenoy¹ and Manish Bavaliya², ¹Dept. of rheumatology and clinical immunology, Amrita Institute of medical science and research institute, Kochi, India, ²Department of rheumatology and clinical immunology, Amrita institute of medical sciences and research institute, Kochi, India
Background/Purpose: Rituximab is an anti-CD20 antibody that represents a therapeutic alternative for the patients with rheumatoid arthritis. It has been proven that rituximab at a…
Abstract Number: 1113 • 2015 ACR/ARHP Annual Meeting
B Cell Signature Profiling in Systemic Lupus Erythematosus Patients on Belimumab
Michelle T. Ngo¹, Abigail Benitez², Kimberly J. Payne², Michael De Vera³, Terry Ann Milford² and Karina Marianne D. Torralba⁴, ¹Rheumatology, Loma Linda University, Loma Linda, CA, ²Loma Linda University, Loma Linda, CA, ³Transplant Surgery, Loma Linda University, Loma Linda, CA, ⁴Division of Rheumatology, Department of Internal Medicine, Loma Linda University, Loma Linda, CA
Background/Purpose: The B cell pool is composed of subsets with different phenotypes and functions that mainly have effector functions to maintain immunologic tolerance. These…

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