Abstracts tagged "pathogenesis"

Abstract Number: 1595 • 2012 ACR/ARHP Annual Meeting
Genome-Wide Association Study to High -Throughput Cell-Based Phenotypic Screen Identifies Novel Chemical Inhibitors of CD40 Signaling
Gang Li¹, Dorothee Diogo², Di Wu¹, Jim Spoonamore³, Rheumatoid Arthritis Consortium International (RACI)⁴, Eli Stahl⁵, Nicola Tolliday³ and Robert M. Plenge⁶, ¹Division of Rheumatology, Immunology and Allergy and Division of Genetics, Brigham and Women's Hospital, Boston, MA, ²Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, ³Broad Institute, Cambridge, MA, ⁴Boston, ⁵Brigham and Women's Hospital, ⁶Division of Rheumatology, Immunology and Allergy and Division of Genetics, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
Background/Purpose: Deriving therapeutic targets from human genetics linked with biological alterations of risk alleles may provide a more successful approach to drug development than traditional…
Abstract Number: 1199 • 2012 ACR/ARHP Annual Meeting
Proteases Produced by Porphyromonas Gingivalis Can Cleave and Citrullinate Substrates Found in the Joint and Oral Mucosa: Implications for Autoimmunity in Rheumatoid Arthritis
Nidhi Sofat¹, Saralili Robertson² and Robin Wait³, ¹Rheumatology, St. George's University of London, London, United Kingdom, ²Biomedical Sciences, St. George's University of London, London, United Kingdom, ³Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterised by inflammation followed by tissue rebuilding or fibrosis. Failure by the body to effectively regulate inflammation…
Abstract Number: 1201 • 2012 ACR/ARHP Annual Meeting
Anti-Citrullinated Protein Antibody Specific Fc Glycosylation Patterns in Arthralgia Patients
Hans Ulrich Scherer¹, Yoann Rombouts², Ewoud Ewing³, Lotte van de Stadt⁴, Maurice H.J. Selman⁵, André M. Deelder³, Tom W.J. Huizinga², Manfred Wuhrer⁵, Dirkjan van Schaardenburg⁶ and René E.M. Toes², ¹Rheumatology, Leiden University Medical Centre, Leiden, Netherlands, ²Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ³Biomolecular Mass Spectrometry Unit, Department of Parasitology, Leiden University Medical Center, Leiden, Netherlands, ⁴Jan van Breemen Research Institute | Reade, Amsterdam, Netherlands, ⁵Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, Netherlands, ⁶Rheumatology, Jan van Breemen Research Institute | Reade, Amsterdam, Netherlands
Background/Purpose: Anti-citrullinated protein antibodies (ACPA) exhibit a specific, pro-inflammatory Fc glycosylation profile characterized by a low content of galactose and sialic acid residues. The absence…
Abstract Number: 1204 • 2012 ACR/ARHP Annual Meeting
Porphyromonas Gingivalis Antibody Responses and Clinical Associations in Patients with Early Rheumatoid Arthritis
Sheila L. Arvikar¹, Klemen Strle², Deborah S. Collier³, Mark C. Fisher¹, Gail McHugh⁴, Toshihisa Kawai⁵, Alpdogan Kantarci⁶ and Allen C. Steere⁷, ¹Rheumatology, Allergy & Immunology, Massachusetts General Hospital, Boston, MA, ²Massachusetts General Hospital, Boston, MA, ³Rheumatology, Massachusetts General Hospital, Boston, MA, ⁴Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Boston, MA, ⁵Forsyth Institute, Cambridge, MA, ⁶Forsyth Institute, Forsyth Institute, Cambridge, MA, ⁷Center for Immunolgy and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA
Background/Purpose: Three prior studies have demonstrated an increased frequency of antibody responses to P. gingivalis (Pg), a leading agent of periodontal disease (PD), in RA…
Abstract Number: 1177 • 2012 ACR/ARHP Annual Meeting
Talin Is Cleaved and Expressed As a Short Form in Patients with Rheumatoid Arthritis
Kensei Tsuzaka¹, Masako Takao¹, Naoshi Shinozaki² and Jiro Nishida¹, ¹Dept of Internal Medicine, Ichikawa General Hospital,TDC, Ichikawa, Chiba, Japan, ²Cornea Center, Ichikawa General Hospital, TDC, Ichikawa, Japan
Methods: Western Blot analysis showed that the N-terminal 32kDa and the C-terminal 15kDa of calpain1 fragment of talin (32kDa and 15kDa short-talin, respectively) was expressed…
Abstract Number: 1181 • 2012 ACR/ARHP Annual Meeting
The Role of á-Defensin-1 and Its Signal Transduction Mechanisms in the Production of IL-6, IL-8 and MMPs in Rheumatoid Fibroblast-Like Synoviocytes
Joong Kyong Ahn¹, Bo Huang², Eun-Jung Park², Jiwon Hwang³, Jaejoon Lee², Chan Hong Jeon⁴, Eunmi Koh² and Hoon-Suk Cha⁵, ¹Department of Medicine, Kangbuk Samsung hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea, ²Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea, ³Department of Medicine,Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea, ⁴Internal Medicine, Soonchunhyang University College of Medicine, Bucheon, South Korea, ⁵Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
Background/Purpose: Fibroblast-like synoviocytes (FLS) play an essential role in the pathophysiology of rheumatoid arthritis (RA). Also, neutrophils are the most abundant cell type of synovial…
Abstract Number: 2659 • 2012 ACR/ARHP Annual Meeting
An Expanded Repertoire of Anti-Citrullinated Peptide Antibodies Is Associated with Interstitial Lung Disease in Rheumatoid Arthritis
Jon T. Giles¹, Sonye Danoff², Jeremy Sokolove³, Robert Winchester⁴, Dimitrios A. Pappas⁵, Catriona Cramb⁶, Geoffrey Connors⁷, Stanley S. Siegelman⁸, William H. Robinson⁹ and Joan M. Bathon⁵, ¹Medicine, Columbia University, New York, NY, ²Medicine/Pulmonary, Johns Hopkins School of Medicine, Baltimore, MD, ³Medicine, VA Palo Alto Health Care System and Stanford University, Palo Alto, CA, ⁴Dept of Medicine & Pathology, Columbia University, New York, NY, ⁵Columbia University, New York, NY, ⁶VA Palo Alto Heatlh Care System and Stanford University, Palo Alto, CA, ⁷Division of Pulmonary and Critical Care Medicine, Yale University, New Haven, CT, ⁸Department of Radiology, Johns Hopkins University, Baltimore, MD, ⁹Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA
Background/Purpose: Interstitial lung disease (ILD) is an outcome with high morbidity and mortality in rheumatoid arthritis (RA). Citrullinated proteins are observed in these lung tissues;…
Abstract Number: 1182 • 2012 ACR/ARHP Annual Meeting
Familial Aggregation and Heritability of Rheumatoid Arthritis in Taiwan: A Nationwide Population Study
Chang-Fu Kuo¹, Matthew J. Grainge², Kuang-Hui Yu³, Lai-Chu See⁴, Shue-Fen Luo³, Ana M. Valdes⁵, I-Jun Chou⁶, Hsiao-Chun Chang³, Weiya Zhang¹ and Michael Doherty⁷, ¹Academic Rheumatology, School of Clinical Sciences, University of Nottingham, Nottingham, United Kingdom, ²Division of Epidemiology and Public Health, School of Community Health Sciences,, University of Nottingham, Nottingham, United Kingdom, ³Division of Rheumatology, Immunology and Allergy, Chang Gung Memorial Hospital, Taoyuan, Taiwan, ⁴Department of Public Health, College of Medicine, Chang Gung University, Taoyuan, Taiwan, ⁵Dept of Twin Research and Genetic Epidemiology, St. Thomas' Hospital, King's College London, London, United Kingdom, ⁶Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan, ⁷Academic Rheumatology, University of Nottingham, Nottingham, United Kingdom
Background/Purpose: The present study was to estimate the familial relative risk (RR) of rheumatoid arthritis (RA) in individuals with affected first-degree relatives compared to individuals with…
Abstract Number: 2576 • 2012 ACR/ARHP Annual Meeting
Production of Citrullinated Filaggrin-Specific IgG in Rheumatoid Arthritis Patients Is Associated with an Expansion of Citrullinated Filaggrin Tetramer-Binding Switched Memory Blood B Cells
Philip Titcombe¹, Laura O. Barsness¹, Lauren Giacobbe¹, Emily Baechler Gillespie¹, Erik J. Peterson² and Daniel L. Mueller², ¹University of Minnesota Medical School, Minneapolis, MN, ²Medicine/Rheumatic and Autoimmune Diseases, University of Minnesota Medical School, Minneapolis, MN
Background/Purpose: Rheumatoid Arthritis (RA) is highly associated with the production of autoantibodies, including rheumatoid factors and anti-citrullinated protein antibodies (ACPA). It remains uncertain whether production…
Abstract Number: 1184 • 2012 ACR/ARHP Annual Meeting
Negative Association Between Testosterone Levels and Risk of Future Rheumatoid Factor Negative Rheumatoid Arthritis in Men
Mitra Pikwer¹, Aleksander Giwercman², Ulf Bergström¹, Jan-Åke Nilsson³, Lennart T.H. Jacobsson³ and Carl Turesson³, ¹Rheumatology, Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden, ²Reproductive Medicine Centre, Skåne University Hospital, Malmö, Sweden, ³Section of Rheumatology, Department of Clinical Sciences, Malmö, Lund University, Malmö, Sweden
Background/Purpose: Rheumatoid arthritis (RA) is a heterogeneous disease with female predominance. Sex hormones have been suggested to play a part in the pathogenesis. We have previously…
Abstract Number: 2577 • 2012 ACR/ARHP Annual Meeting
Characterization of Circulating Human B Cells That Bind Cyclic Citrullinated Peptide Antigens in Clinically Active Rheumatoid Arthritis
Gregg J. Silverman¹, John Jung², Jeffrey D. Greenberg³, Adam J. Pelzek⁴, Caroline Gronwall⁵ and Jaya Vas⁵, ¹Medical and Pathology, NYU School of Medicine, New York, NY, ²School of Medicine, NYU, New York, NY, ³New York Hospital for Joint Disease, New York, NY, ⁴School of Medicine, NYU School of Medicine, New York, NY, ⁵Rheumatology, NYU School of Medicine, New York, NY
Background/Purpose: Anti-citrullinated protein antibodies (ACPA) were first identified based on their high specificity for RA and now are commonly used as a diagnostic tool. Yet,…
Abstract Number: 1175 • 2012 ACR/ARHP Annual Meeting
Decreased Frequency of Th17 Cells in Early Rheumatoid Arthritis
Irene Arroyo-Villa¹, M. Belén Bautista-Caro¹, Alejandro Balsa², Pilar Aguado², Laura Nuño², Gema Bonilla³, Amaya Puig-Kröger⁴, Emilio Martín-Mola² and M. Eugenia Miranda-Carús², ¹Rheumatology, Hospital La Paz - IdiPaz, Madrid, Spain, ²Hospital La Paz-IdiPaz, Madrid, Spain, ³Rheumatology, Hospital La Paz, Madrid, Spain, ⁴Immuno-oncology, Hospital Gregorio Marañon, Madrid, Spain
Background/Purpose: Our objective was to examine the frequency and phenotype of Th17 cells in the peripheral blood of early RA (eRA) patients. Methods: CD4+ T…
Abstract Number: 2524 • 2012 ACR/ARHP Annual Meeting
Snapin Is Critical for the Maturation of Autophagosome and Phagosome in Macrophages
Bo Shi¹, Qiquan Huang², Robert Birkett¹, Renee E. Koessler³, Andrea Dorfleutner⁴, Christian Stehlik⁴ and Richard M. Pope⁵, ¹Division of Rheumatology, Department od Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, ²Division of Rheumatology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, ³Rheumatology, Northwestern University Feinberg school of Medicine, Chicago, IL, ⁴Medicine/Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL, ⁵Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL
Background/Purpose: We found that Snapin, a SNARE complex protein required for synaptic vesicle docking and fusion, was significantly increased in rheumatoid arthritis (RA) synovial tissue…
Abstract Number: 414 • 2012 ACR/ARHP Annual Meeting
First-Degree Relatives without Rheumatoid Arthritis Exhibit Reactivity to Multiple Anti-Citrullinated Protein Antibodies in Association with Rheumatoid Arthritis-Related Clinical Characteristics: Studies of the Etiology of Rheumatoid Arthritis
Kendra A. Young¹, Kevin D. Deane², Lezlie A. Derber³, Jan M. Hughes-Austin⁴, Michael H. Weisman⁵, Jane H. Buckner⁶, Ted R. Mikuls⁷, James R. O'Dell⁸, Richard M. Keating⁹, Peter K. Gregersen¹⁰, V. Michael Holers¹¹ and Jill M. Norris¹, ¹Epidemiology, Colorado School of Public Health, Aurora, CO, ²Division of Rheumatology, University of Colorado School of Medicine, Aurora, CO, ³University of Colorado School of Medicine, Division of Rheumatology, Aurora, CO, ⁴Epidemiology, Colorado School of Public Health / University of Colorado Anschutz Medical Campus, Aurora, CO, ⁵Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, ⁶Benaroya Research Institute at Virginia Mason, Seattle, WA, ⁷Omaha VA Medical Center and University of Nebraska Medical Center, Omaha, NE, ⁸Dept of Internal Medicine, Univ of Nebraska Med Ctr, Omaha, NE, ⁹Rheumatology Section, The University of Chicago, Chicago, IL, ¹⁰Genomics and Human Genetics, Feinstein Institute for Medical Research, Manhasset, NY, ¹¹Rheumatology Division, University of Colorado School of Medicine, Aurora, CO
Background/Purpose: Prior to diagnosis of rheumatoid arthritis (RA), there are increases in the number of citrullinated proteins that anti-citrullinated protein antibodies (ACPA) target, suggesting an…
Abstract Number: 2454 • 2012 ACR/ARHP Annual Meeting
Expression of TLR5 Strongly Correlates with Levels of TNF-a and DAS28 in RA Monocytes and Ligation of TLR5 Induces Angiogenesis in RA
Nathan D. Chamberlain¹, Michael Volin², Olga M. Vila³, Shiva Arami⁴, Suncica Volkov⁵ and Shiva Shahrara¹, ¹Medicine/Rheumatology, University of Illinois at Chicago, Chicago, IL, ²Department of Microbiology and Immunology, Chicago College of Osteopathic Medicine Midwestern University, Downers Grove, IL, ³University of Illinois at Chicago, Chicago, IL, ⁴Medicine - Rheumatology, University of Illinois at Chicago, Chicago, IL, ⁵Rheumatology/MC 733, University of Illinois at Chicago, Chicago, IL
Background/Purpose: This study was performed to determine whether expression of TLR5 is associated with Rheumatoid Arthritis (RA) disease activity as well as to examine the…

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