Abstracts Archive - Page 1558 of 2425 - ACR Meeting Abstracts

Abstract Number: 2111 • 2016 ACR/ARHP Annual Meeting
Generation and Characterization of Anti-Citrullinated Protein Antibody-Producing B-Cell Clones
Kristine Germar^1,2, Mark Kwakkenbos³, Sabrina Pollastro^1,2, Nathalie van Uden^1,2,4, Priscilla Kerkman⁵, Ellen I.H. van der Voort⁶, Evan Reed⁷, Karin Lundberg⁷, Niek de Vries^1,8, Lars Klareskog⁷, Hans U. Scherer⁵, René E.M. Toes⁵, Arjen Bakker³, Hergen Spits^3,9,10 and Dominique Baeten^1,2,10, ¹Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ²Amsterdam Rheumatology and immunology Center, Amsterdam, Netherlands, ³AIMM Therapeutics, Amsterdam, Netherlands, ⁴Experimental Immunology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁵Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁶Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁷Rheumatology Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden, ⁸Clinical Immunology and Rheumatology F4-105, Amsterdam Rheumatology and immunology Center, location AMC, Amsterdam, Netherlands, ⁹Department of Cell Biology and Histology, Academic Medical Centre/University of Amsterdam, Amsterdam, Netherlands, ¹⁰These authors contributed equally to this work, Amsterdam, Netherlands
Background/Purpose: Rheumatoid arthritis (RA) is the most frequent form of autoimmune arthritis with a prevalence of almost 1% worldwide. Anti-citrullinated protein antibodies (ACPA) are the…
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: 2113 • 2016 ACR/ARHP Annual Meeting
Anti-Carbamylated Protein Antibody (cross)-Reactivity Against Multiple Carbamylated Protein Antigens
Marije K. Verheul¹, Myrthe van Delft², Tom WJ Huizinga¹, REM Toes¹ and LA Trouw¹, ¹Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ²Rheumatology, Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Antibodies that target carbamylated proteins (anti-CarP) have been implicated in rheumatoid arthritis and are known to associate with joint damage. Furthermore, these autoantibodies…
Abstract Number: 2114 • 2016 ACR/ARHP Annual Meeting
Exposure to Carbamylated Self- and Non-Self-Proteins Can Lead to a Break-of -Tolerance and the Induction of Autoimmunity
Jacqueline Dekkers¹, Marije K. Verheul², Jeroen Stoop³, Bisheng Liu⁴, Peter A. van Veelen⁵, Martin Hegen⁶, Stephen Rapecki⁷, Tom WJ Huizinga², Leendert A. Trouw⁴ and René Toes⁴, ¹Rheumatology, Department of Rheumatology, Leiden University Medical Center (LUMC), Leiden, Netherlands, ²Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ³Leiden University Medical Center (LUMC), Leiden, Netherlands, ⁴Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁵Immunohematology and Bloodbank, Leiden University Medical Center, Leiden, Netherlands, ⁶Inflammation, Wyeth Pharmaceuticals, Cambridge, MA, ⁷UCB Pharma, Slough, United Kingdom
Background/Purpose: Autoantibodies are an important hallmark of Rheumatoid Arthritis (RA). Approximately 50% of RA patients harbor anti-carbamylated protein (CarP) antibodies. These autoantibodies target proteins that…
Abstract Number: 2115 • 2016 ACR/ARHP Annual Meeting
Rheumatoid Factors May Potentiate Immune Complex Formation of Anti-Citrullinated Protein Antibodies
Willem J.J. Falkenburg^1,2, Dirkjan van Schaardenburg^3,4, Jana Koers⁵, Pleuni Ooijevaar-de Heer⁵, Gertjan Wolbink^6,7, Arthur E.H. Bentlage⁸, Gestur Vidarsson⁸ and Theo Rispens⁵, ¹Rheumatology, Amsterdam Rheumatology and immunology Center | Reade, Amsterdam, Netherlands, ²Department of Immunopathology, Sanquin Research, Amsterdam, Netherlands, ³Rheumatology, Amsterdam Rheumatology and immunology Center, location Academic Medical Center, Amsterdam, Netherlands, Amsterdam, Netherlands, ⁴Rheumatology, Amsterdam Rheumatology and immunology Center, location Reade, Amsterdam, Netherlands, Amsterdam, Netherlands, ⁵Immunopathology, Sanquin Research, Amsterdam, Netherlands, ⁶Immunopathology, Sanquin Research and Landsteiner Laboratory Academic Medical Center, Amsterdam, Netherlands, ⁷Rheumatology, Amsterdam Rheumatology and immunology Center, location Reade, Amsterdam, Netherlands, ⁸Experimental Immunohematology, Sanquin Research, Amsterdam, Netherlands
Background/Purpose: Rheumatoid arthritis (RA) is a complex inflammatory disorder in which autoantibodies play a prominent role. Several types of autoantibodies, including rheumatoid factors (RFs) -…
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: 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…
Abstract Number: 2118 • 2016 ACR/ARHP Annual Meeting
Rituximab Treated Non Responder Rheumatoid Arthritis Patients Are Generating a New Autoantibody Repertoire
Zoltan Konthur¹, Melvin Michael Wiemkes², Thomas Häupl³, Gerd R. Burmester⁴ and Karl Skriner⁵, ¹Department of Vertebrate Genomics, Max Planck Institute for Molecular Genetics, Berlin, Germany, ²Department of Rheumatology and Clinical Immunology, Germany, Charité - Universitätsmedizin Berlin, Berlin, Germany, ³Department of Rheumatology and Clinical Immunology, Charité University Medicine, Berlin, Germany, ⁴Charité – University Medicine Berlin, Berlin, Germany, ⁵Humboldt University of Berlin, Berlin, Germany
Background/Purpose: Rituximab (RTX) has shown clinical efficacy but up to 40 % of RTX treated rheumatoid arthritis (RA) patients are poor responders (Ann Rheum Dis.…
Abstract Number: 2119 • 2016 ACR/ARHP Annual Meeting
Wogonin, a Plant-Derived Flavonoid, Exert Anti-Inflammatory and Chondroprotective Effects through the Activation Nrf2/HO-1 Signaling in Human OA Chondrocytes
Mohammad N. Khan, Abdul Haseeb, Sara Haynie and Tariq M Haqqi, Anatomy & Neurobiology, Northeast Ohio Medical University, Rootstown, OH
Background/Purpose: Methods: Primary human OA chondrocytes were isolated by enzymatic digestion of the cartilage obtained from OA patients who underwent total knee arthroplasty at…
Abstract Number: 2120 • 2016 ACR/ARHP Annual Meeting
Discovery of a Small Molecule Inhibitor of the Wnt Pathway (SM04690) As a Potential Treatment for Degenerative Disc Disease
Charlene Barroga¹, Vishal Deshmukh¹, Luis Dellamary¹, Josh Stewart¹, Haide Hu², John Hood² and Yusuf Yazici¹, ¹Samumed, LLC, San Diego, CA, ²Samumed, LLC (formerly), San Diego, CA
Background/Purpose: Degenerative Disc Disease (DDD), one of the main causes of low back pain, is characterized by degeneration of intervertebral disc, nucleus pulposus (NP), and…
Abstract Number: 2121 • 2016 ACR/ARHP Annual Meeting
Identification of microRNA-181a-5p and microRNA-4454 As Mediators of Facet Cartilage Degeneration
Akihiro Nakamura^1,2, Y. Raja Rampersaud^3,4, Anirudh Sharma^1,2, Stephen J. Lewis^3,5, Brian Wu^1,2, Poulami Datta^1,2, Kala Sundararajan⁶, Helal Endisha^1,2, Evgeny Rossomacha^1,2, Jason S Rockel^1,2, Igor Jurisica⁷ and Mohit kapoor^1,2,8, ¹Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON, Canada, ²Arthritis Program, University Health Netwok, Toronto, ON, Canada, ³Orthopaedic Surgery and Neurosurgery, Arthritis Program, University Health Network, Toronto, ON, Canada, ⁴Orthopaedics, Toronto Western Hospital, Toronto, ON, Canada, ⁵Spinal Program, Krembil Neuroscience Centre, Toronto Western Hospital, Toronto, ON, Canada, ⁶Orthopaedic Research Department, Toronto Western Hospital, University Health Network, Toronto, ON, Canada, ⁷Medical Biophysics and Computer Science, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada, ⁸Surgery, Laboratory Medicine, and Pathobiology, University of Toronto, Toronto, ON, Canada
Background/Purpose: Osteoarthritis (OA) of spine (facet joints, FJ) is one of the major causes of severe low back pain and disability worldwide. However, specific mechanisms…
Abstract Number: 2122 • 2016 ACR/ARHP Annual Meeting
KiSS1 Is a Regulator of ADAMTS4 and ADAMTS5 Expression and Is Post-Transcriptionally Regulated By Micro-RNA N105 in Human OA Chondrocytes
Mohammad Shahidul Makki^1,2 and Tariq Haqqi³, ¹4209 St Rt 44 PO Box 95, Northeast Ohio Medical University, Rootstown, OH, ²Anatomy and Neurobiology, Northeast Ohio Medical University (NEOMED), Rootstown, OH, ³Anatomy & Neurobiology, Northeast Ohio Medical University, Rootstown, OH
Background/Purpose: Osteoarthritis (OA) is a chronic and debilitating disease of the articulating joints in every population. Micro-RNAs are ~22 nucleotides long non-coding single stranded RNAs…
Abstract Number: 2123 • 2016 ACR/ARHP Annual Meeting
Follistatin-like Protein 1 Is a Potent Regulator of Articular Chondrocytes in Osteoarthritis
Yury Chaly, Bruce Hostager, Sonja Smith and Raphael Hirsch, Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA
Background/Purpose: Osteoarthritis (OA) is the most common degenerative disease of the joints, affecting nearly 30 million Americans. It is characterized by a change in chondrocyte…
Abstract Number: 2124 • 2016 ACR/ARHP Annual Meeting
Maintenance of Chondrocyte Phenotypic Stability By TRPC6 Calcium Channel Activity
Joanna Sherwood¹, Jessica Bertrand², Francesco Dell'Accio³ and Thomas Pap⁴, ¹Institute for Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany, ²Department of Orthopedic Surgery, Otto-von-Guericke University of Magdeburg, Magdeburg, Germany, ³William Harvey Research Institute,, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom, ⁴Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany
Background/Purpose: The ELR+ CXC chemokine CXCL6 is produced by healthy articular chondrocytes and retained within the cartilage matrix via interactions with heparan sulphate proteoglycans. There,…
Abstract Number: 2125 • 2016 ACR/ARHP Annual Meeting
Aggrecan Degradation Is Not Just Aggrecan Degradation:a Study of the Neo-Epitopes Tege and Args Released from Cartilage upon Aggrecanase Activity
Anne Sofie Siebuhr¹, Yi He², Yunyun Lou², Sabine Hoielt³, Morten Asser Karsdal¹ and Anne C. Bay-Jensen¹, ¹Rheumatology, Nordic Bioscience, Herlev, Denmark, ²Rheumatology, Nordic Bioscience, Biomarkers and Research, Herlev, Denmark, ³Rheumatology, Nordic Bioscience, Biomarkers and Research, 2730, Denmark
Background/Purpose: Cartilage degradation is a hallmark of arthritic disease. The main constituents of cartilage is aggrecan and type II collagen. Previous studies have shown that…

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