Abstracts tagged "pathogenesis"

Abstract Number: 961 • 2015 ACR/ARHP Annual Meeting
Altered Th Cell Plasticity Favors Th17 Cells in Rheumatoid Arthritis
Jan Leipe¹, Fausto Pirronello², Hendrik Schulze-Koops² and Alla Skapenko², ¹Division of Rheumatology, University of Munich, Munich, Germany, ²Division of Rheumatology and Clinical Immunology, University of Munich, Munich, Germany
Background/Purpose: Previously, T helper (Th) cell subsets have been regarded as irreversibly differentiated endpoints. However, evidence suggests that Th cell differentiation is a plastic process…
Abstract Number: 964 • 2015 ACR/ARHP Annual Meeting
Neutrophil Extracellular Traps Are Not Only Targets for ACPA-Positive IgG from Rheumatoid Arthritis Patients but Also Directly Trigger Pro- and Anti-Inflammatory Effects Partly Mediated By the C1q Complement Protein
Matthieu Ribon¹, Sarra Seninet¹, Katarzyna Matyja¹, Mireille Sebbag², Cyril Clavel², Julie Mussard¹, Guy Serre², Marie-Christophe Boissier³ and Patrice Decker¹, ¹Inserm UMR 1125, Li2P, University of Paris 13, Sorbonne Paris Cité, Bobigny, France, ²University of Toulouse, UMR 5165 CNRS-1056 Inserm, Toulouse, France, ³Rheumatology Department, Avicenne Hospital, AP-HP, Bobigny, France
Background/Purpose: Activated neutrophils (PMN) form neutrophil extracellular traps (NET). Those structures are expelled chromatin fibers composed of DNA and associated proteins. The process, NETosis, is…
Abstract Number: 1163 • 2015 ACR/ARHP Annual Meeting
Dynamic Regulation of Enhancers and Super-Enhancers in Rheumatoid Arthritis Synovial Finroblasts
Sung-Ho Park¹, Christopher Sohn¹, Konstantinos Loupasakis², Angela Lee³, Eugenia Giannopoulou¹, Lionel B. Ivashkiv³ and George D. Kalliolias¹, ¹Hospital for Special Surgery, New York, NY, ²Rheumatology, Hospital for Special Surgery Weill Cornell Medical College, New York, NY, ³Medicine, Hospital for Special Surgery, New York, NY
Background/Purpose: Enhancers are regulatory elements that modulate transcriptional rates of genes. Super-enhancers (SupE) are extremely large enhancers associated primarily with highly expressed genes that have…
Abstract Number: 1619 • 2015 ACR/ARHP Annual Meeting
Genetic Influences of Susceptibility to Rheumatoid Arthritis in African Americans
Vincent A. Laufer¹, Richard J. Reynolds², Maria I. Danila³, Hemant K. Tiwari⁴, Amit Patki⁴, Carl D. Langefeld⁵, Devin Absher⁶, Donna K. Arnett⁷ and S. Louis Bridges Jr.⁸, ¹Division of Clinical Rheumatology and Immunology, University of Alabama at Birmingham, Birmingham, AL, ²Medicine, University of Alabama at Birmingham, Birmingham, AL, ³AL, ⁴Biostatistics, University of Alabama at Birmingham, Birmingham, AL, ⁵Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, ⁶Hudson Alpha Institute for Biotechnology, Huntsville, AL, ⁷University of Alabama at Birmingham, Birmingham, AL, ⁸Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL
Background/Purpose: Trans-ethnic analyses have found similarities and differences in genetic influences on RA susceptibility among Caucasians and Asians, making both validation and novel gene association…
Abstract Number: 1621 • 2015 ACR/ARHP Annual Meeting
Genetic Contributions to Radiographic Damage in African Americans with Rheumatoid Arthritis on a Panel of Autoimmune Disease Markers
Vincent A. Laufer¹, Richard J. Reynolds², Peter K. Gregersen³, S. Louis Bridges Jr.⁴, Maria I. Danila⁵ and CLEAR Investigators, ¹Division of Clinical Rheumatology and Immunology, University of Alabama at Birmingham, Birmingham, AL, ²Medicine, University of Alabama at Birmingham, Birmingham, AL, ³Robert S. Boas Center for Genomics and Human Genetics, Feinstein Institute for Med Res, Manhasset, NY, ⁴Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, ⁵AL
Background/Purpose: Rheumatoid arthritis (RA) is a complex autoimmune condition affecting 0.5-1% of populations worldwide and having a significant heritable component. A major endophenotype within RA…
Abstract Number: 2012 • 2015 ACR/ARHP Annual Meeting
TNF Confers Pathogenic Memory in Synovial Fibroblasts Via Chromatin Remodeling, NF-Kb-Dependent Transcription and MAPK-Mediated mRNA Stabilization
Konstantinos Loupasakis¹, Christopher Sohn², Lionel B. Ivashkiv³ and George D. Kalliolias², ¹Rheumatology, Hospital for Special Surgery Weill Cornell Medical College, New York, NY, ²Hospital for Special Surgery, New York, NY, ³Arthritis and Tissue Degeneration Program and the David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY
Background/Purpose: We investigated mechanisms driving pathogenic behavior of synovial fibroblasts (FLS) in rheumatoid arthritis (RA). Methods: FLS from RA patients (1987 classification criteria) were extracted.…
Abstract Number: 2133 • 2015 ACR/ARHP Annual Meeting
Receptor Protein Tyrosine Phosphatase Alpha Enhances Rheumatoid Synovial Fibroblast Signaling and Promotes Arthritis in Mice
Stephanie M. Stanford¹, Mattias N. D. Svensson¹, Cristiano Sacchetti¹, Caila A. Pilo¹, Dennis J. Wu¹, William B. Kiosses², Annelie Hellvard³, Brith Bergum³, German R. Aleman Muench¹, Christian Elly¹, Yun-Cai Liu¹, Jeroen den Hertog^4,5, Ari Elson⁶, Jan Sap⁷, Piotr Mydel³, David L. Boyle⁸, Maripat Corr⁸, Gary S. Firestein⁸ and Nunzio Bottini¹, ¹Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ²The Scripps Research Institute, La Jolla, CA, ³Clinical Science, Broegelmann Research Laboratory, Bergen, Norway, ⁴Hubrecht Institute-Koninklijke Nederlands Akademie van Wetenschappen and University Medical Center Utrecht, Utrecht, Netherlands, ⁵Institute of Biology Leiden, Leiden, Netherlands, ⁶Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel, ⁷Epigenetics and Cell Fate, Université Paris Diderot Sorbonne Paris Cité, Paris, France, ⁸Division of Rheumatology, Allergy and Immunology, University of California at San Diego School of Medicine, La Jolla, CA
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) promote disease pathogenesis by aggressively invading the joint extracellular matrix. The focal adhesion kinase (FAK) signaling pathway is…
Abstract Number: 1434 • 2014 ACR/ARHP Annual Meeting
The Longitudinal Association Between Inflammation and Blood Pressure in Rheumatoid Arthritis
Chih-Chin Liu¹, Daniel H. Solomon², Rishi Desai³, Seoyoung C. Kim⁴ and Katherine Liao⁵, ¹Rheumatology & Immunology, Brigham & Women's Hospital, Boston, MA, ²Brigham and Women's Hospital, Boston, MA, ³PharmacoEpidemiology & PharmacoEconomics, Brigham and Women's Hospital, Boston, MA, ⁴Div. of Pharmacoepidemiology and Pharmacoeconomics, Div. of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Boston, MA, ⁵Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Boston, MA
Background/Purpose Inflammation is hypothesized to have direct effects on arterial endothelial and vasomotor function, functions which regulate blood pressure (BP). While inflammation has been implicated…
Abstract Number: 449 • 2014 ACR/ARHP Annual Meeting
Citrullinated-Vimentin-Specific Regulatory T-Cell Responses Associate with ACPA Positive Individuals with Non-Specific Musculoskeletal Symptoms
Aamir Aslam¹, Jackie L. Nam¹, Laura Hunt¹, Chadi Rakieh¹, Ann W. Morgan² and Paul Emery¹, ¹NIHR-Leeds Musculoskeletal Biomedical Research Unit and Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom, ²NIHR-Leeds Musculoskeletal Biomedical Research Unit, University of Leeds, Leeds, United Kingdom
Background/Purpose: The pathogenesis of RA can be conceptualised by sequential phases that precede the development of synovitis. Autoimmune antibody responses, including ACPA, can precede clinical…
Abstract Number: 433 • 2014 ACR/ARHP Annual Meeting
Bronchiectasis: A Model for Chronic Bacterial Infection Inducing Autoimmunity in Rheumatoid Arthritis
Anne-Marie Quirke¹, Elizabeth Perry², Alison Cartwright¹, Clive Kelly³, Anthony De Sozya^4,5, Paul Eggleton⁶, David Hutchinson² and Patrick Venables⁷, ¹Kennedy Institute, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom, ²Rheumatology, Royal Cornwall Hospital, Truro, United Kingdom, ³Rheumatology, Queen Elizabeth Hospital, Gateshead, United Kingdom, ⁴Institute for Cellular Medicine, Newcastle University, Newcastle, United Kingdom, ⁵Sir William Leech Centre, The Freeman Hospital, Newcastle, United Kingdom, ⁶Medical School, University of Exeter, Exeter, United Kingdom, ⁷Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
Background/Purpose Anti-citrullinated peptide antibodies (ACPA) are associated with smoking in patients with rheumatoid arthritis (RA). Bronchiectasis (BR), which tends to occur in non-smokers, has been…
Abstract Number: 338 • 2014 ACR/ARHP Annual Meeting
Bombina Variegate peptide8/Prokineticin 2: A Novel Arthritis-Inducible Chemokine
Haruyasu Ito, Ken Yoshida, Kentaro Noda and Daitaro Kurosaka, Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
Background/Purpose Rheumatoid arthritis (RA) is a chronic inflammatory disorder characterized by the joint destruction. Chemokines play important roles as monocyte and neutrophil recruiters in RA.…
Abstract Number: 39 • 2014 ACR/ARHP Annual Meeting
Human CD14⁺ Monocytes Stimulated with a Combination of TNFα and IL-6 Differentiate into Osteoclast-like Cells with Bone-Resorption Activity
Kazuhiro Yokota¹, Kojiro Sato², Yoshimi Aizaki², Yuji Akiyama² and Toshihide Mimura², ¹Department of Rheumatology & Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan, ²Department of Rheumatology and Applied Immunology, Faculty of Medicine, Saitama Medical University, Saitama, Japan
Background/Purpose Proinflammatory cytokines play an important role in bone destruction in rheumatoid arthritis (RA), as inferred by the efficacy of biologics. Previously, we reported that…
Abstract Number: 2847 • 2014 ACR/ARHP Annual Meeting
Survivin Co-Ordinates Formation of Follicular T-Cells in Rheumatoid Arthritis
Maria Bokarewa¹, Karin Andersson², Malin Erlandsson², Mattias Svensson², Nicola Cavallini³ and Mikael Brisslert², ¹Guldhedsgatan 10, University of Goteborg, Goteborg, Sweden, ²Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden, ³Rheumatology and Inflammation Research, University of Göteborg, Göteborg, Sweden
Background/Purpose Survivin is a proto-oncogene that regulates cell division and apoptosis. Recently, survivin has emerged as a biomarker of persistently active and joint destructive rheumatoid…
Abstract Number: 2799 • 2014 ACR/ARHP Annual Meeting
The Differential Impact of Obesity on the Pathogenesis of RA or Preclinical Models Is Contingent on the Disease Status
Zhenlong Chen¹, Seung-jae Kim¹, Abdul Essani², Michael V. Volin³, Suncica Volkov¹, William Swedler⁴, Shiva Arami², Giamila Fantuzzi², Nadera J. Sweiss⁵ and Shiva Shahrara¹, ¹Medicine/Rheumatology, University of Illinois at Chicago, Chicago, IL, ²University of Illinois at Chicago, Chicago, IL, ³Department of Microbiology and Immunology, Chicago College of Osteopathic Medicine Midwestern University, Downers Grove, IL, ⁴Section of Rheumatology, University of Illinois at Chicago, Chicago, IL, ⁵internal medicine section of rheumatology, University of Illinois at Chicago, Chicago, IL
Background/Purpose: Studies were performed to determine the significance of obesity in the pathogenesis of rheumatoid arthritis (RA) and experimental arthritis models. Methods: Chronic and acute…
Abstract Number: 2673 • 2014 ACR/ARHP Annual Meeting
High-Throughput Sequencing of 219 Candidate Genes for Identification of SLE-Associated Risk Variants
Fabiana Farias¹, Maria Wilbe², Johanna Dahlqvist¹, Dag Leonard³, Sergey Kozyrev¹, Gerli Pielberg¹, Maija-Leena Eloranta³, Lars Rönnblom³ and Kerstin Lindblad-Toh^1,4, ¹Department of Medical Biochemistry and Microbiology, Uppsala University, Science for Life Laboratory, Uppsala, Sweden, ²Department of Immunology, Genetics and Pathology, Uppsala University, Science for Life Laboratory, Uppsala, Sweden, ³Department of Medical Sciences, SciLife Lab, Rheumatology, Uppsala University, Uppsala, Sweden, Uppsala, Sweden, ⁴Broad Institute, Cambridge, MA
Background/Purpose: Systemic lupus erythematosus (SLE) is a complex autoimmune disease, believed to arise from environmental triggering events in genetically predisposed individuals. To date, more than…

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