Abstracts tagged "rheumatoid arthritis (RA) and signal transduction"

Abstract Number: 85 • 2017 ACR/ARHP Annual Meeting
Enhanced IFN-γ STAT1 Signaling in CD4 T Cell Populations and Attenuated IL-2 STAT5 Signaling Contribute to the Pathogenesis of Rheumatoid Arthritis (RA)
Brandon Pope¹, Vishal Sharma², Molly Boland², Richard Reynolds², S. Louis Bridges Jr.³ and Chander Raman⁴, ¹Medicine, University of Alabama at Birmingham, Birmingham, AL, ²University of Alabama at Birmingham, Birmingham, AL, ³Clinical Immunology & Rheum, Univ of Alabama, Birmingham, AL, ⁴Medicine/Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL
Background/Purpose: Type I (IFN-α) and type II (IFN-γ) interferons are important mediators of autoimmunity. However, there is conflicting evidence regarding the contribution of IFN-γ to…
Abstract Number: 1409 • 2017 ACR/ARHP Annual Meeting
Ursolic Acid Promotes Apoptosis of Rheumatoid Athritis Synovial Fibroblasts By Upregulating Noxa Expression and Recruiting E3 Ligase Mule to Degrade Mcl-1
Eugene Kim¹, Solomon Agere¹, Sadik Khuder² and Salahuddin Ahmed¹, ¹Department of Pharmaceutical Sciences, Washington State University, College of Pharmacy, Spokane, WA, ²Department of Medicine, University of Toledo, Toledo, OH
Background/Purpose: In our previous study, we discovered that ursolic acid (UA), a pentacyclic triterpenoid with anti-inflammatory properties, induces apoptosis in synovial fibroblasts from rheumatoid arthritis…
Abstract Number: 2790 • 2017 ACR/ARHP Annual Meeting
Regulation of ASK1 Expression and Its Role in Rheumatoid Arthritis (RA)
Gyrid Nygaard¹, Deepa Hammaker², David L. Boyle³, Li Li⁴, Julie Di Paolo⁵ and Gary S. Firestein⁶, ¹Medicine, UC San Diego, La Jolla, CA, ²Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, ³University of California San Diego, La Jolla, CA, ⁴Gilead Sciences, South San Francisco, CA, ⁵Immunology and Inflammation Biology, Gilead Sciences, Foster City, CA, ⁶Medicine, University of California San Diego, La Jolla, CA
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) reside in the synovial intimal lining. They display a unique aggressive phenotype, invading the articular cartilage and promoting…
Abstract Number: 329 • 2016 ACR/ARHP Annual Meeting
Explore the Possible Mechanisms of 1,25(OH)2D3 on the Formation of Osteoclasts in Rheumatoid Arthritis
Hong-yan WEN¹, Dan-dan LIU², Dan-dan WEI², Fang-fang ZHAO² and Xiao-feng LI², ¹Rheumatology, Shanxi Medical University, The Second Hospital of Shanxi Medical University, Taiyuan, China, ²Shanxi Medical University, The Second Hospital of Shanxi Medical University, Taiyuan, China
Background/Purpose: In our previous study, several conclusions are reached like: (1) IL-22 can promote inflammation and osteoclast formation in the process of RA;(2) 1,25(OH)2D3 decreases serum IL-22 level in RA patients, and acts as a…
Abstract Number: 3215 • 2016 ACR/ARHP Annual Meeting
ASK1 Is Regulated By IL-1β and TNF and Modulates Key Rheumatoid Arthritis (RA) Fibroblast-like Synoviocyte Functions (FLS)
Gyrid Nygaard¹, Deepa Hammaker², David L. Boyle³, Astrid Clarke⁴, Li Li⁵, Julie Dipaolo⁶ and Gary Firestein⁷, ¹Medicine, UC San Diego, La Jolla, CA, ²Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, ³Division of Rheumatology, Allergy and Immunology, University of California, San Diego, La Jolla, CA, ⁴GIlead, South San Francisco, CA, ⁵Gilead Sciences, South San Francisco, CA, ⁶Gilead, South San Francisco, CA, ⁷Medicine, UCSD, La Jolla, CA
Background/Purpose: RA fibroblast-like synoviocytes (FLS) possess a unique aggressive phenotype characterized by increased cell growth, cytokine production and invasion. Previous unsuccessful attempts to target the…
Abstract Number: 1033 • 2015 ACR/ARHP Annual Meeting
Novel Ligand-Independent Peptide Inhibitors of Triggering Receptor Expressed on Myeloid Cells 1 (TREM-1) and T Cell Receptor (TCR): Efficacy in a Collagen-Induced Arthritis Model Suggests New Targeted Treatment for Rheumatoid Arthritis
Zu T. Shen and Alexander B. Sigalov, SignaBlok, Inc., Shrewsbury, MA
Background/Purpose: Macrophages and T cells are central to the pathophysiology of autoimmune diseases. Synovial macrophages, synovial fibroblasts and infiltrating T lymphocytes are the most abundant…
Abstract Number: 2015 • 2015 ACR/ARHP Annual Meeting
Targeting Non-Canonical NF-Kappa B Signaling Inhibits Angiogenesis in a Novel 3D Model of Rheumatoid Arthritis Synovial Angiogenesis
Chrissta X. Maracle¹, Paulina Kucharzewska², Boy Helder¹, Arjan W. Griffioen³, Henric K. Olsson² and Sander W. Tas⁴, ¹Clinical Immunology and Rheumatology, Amsterdam Rheumatology and immunology Center | Academic Medical Center, Amsterdam, Netherlands, ²Astra Zeneca, Mölndal, Sweden, ³Medical Oncology, VU University Medical Center, Amsterdam, Netherlands, ⁴Clinical Immunology and Rheumatology, Amsterdam Rheumatology and immunology Center | Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands
Background/Purpose: Pathological angiogenesis is a crucial part of disease progression in rheumatoid arthritis (RA) and is often considered the switch from acute to chronic inflammation.…
Abstract Number: 1459 • 2014 ACR/ARHP Annual Meeting
IL-22 Secreted By NKp44+NK Cells Promote the Proliferation of Synovium in Patients with Rheumatoid Arthritis By Activation of STAT3
Junqing Zhu¹, Juan Li¹ and Xiaoguang Chen², ¹Nanfang Hospital, College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China, ²School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China
Background/Purpose: Although CD3-CD56+NKp44+ natural Killer cells (NKp44+NK cells) have been linked to autoimmune diseases including inflammatory bowel disease, ankylosing spondylitis, and primary Sjogren's syndrome, the…
Abstract Number: 1027 • 2014 ACR/ARHP Annual Meeting
Hematopoietic Cell Kinase (HCK) As a Novel Regulator of Fibroblast-like Synoviocyte Function in RA
Ying Wang¹, Deepa Hammaker², David L. Boyle³, Toshio Yoshizawa⁴ and Gary S. Firestein³, ¹Medicine, UCSD, La Jolla, CA, ²Medicine, University of California San Diego, La Jolla, CA, ³Division of Rheumatology, Allergy and Immunology, University of California at San Diego School of Medicine, La Jolla, CA, ⁴Exploratory Research Laboratories 1, Ono Pharmaceutical Co., Ltd., Osaka, Japan
Background/Purpose: Fibroblast-like synoviocytes (FLS) are key mediators of inflammation and joint damage in rheumatoid arthritis (RA) through the production of cytokines and matrix metalloproteinases (MMPs)…
Abstract Number: 1859 • 2013 ACR/ARHP Annual Meeting
OX40⁺ T Cells and OX40L⁺ B Cells Accumulate In The Inflamed Joints and OX40 Signalling Is Skewed Towards Autoreactivity
Julie Kristine Laustsen¹, Tue Rasmussen², Malene Hvid³ and Bent Deleuran⁴, ¹Department of Medical Biomedicine, Aarhus University, Aarhus N, Denmark, ²Dept of Biomedicine, Aarhus University, Aarhus, Denmark, ³Dept. of Clinical Medicine, Aarhus University, Aarhus, Denmark, ⁴Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterized by the presence of autoantibodies and autoreactive T cells, leading to synovitis and joint destruction. The…
Abstract Number: 773 • 2013 ACR/ARHP Annual Meeting
Adioponectin-Induced p38 MAPK and AMPK Pathways In Rheumatoid Arthritis Synovial Fibroblasts Are Adiponectin Isoform Dependent
Kiran Khawaja¹, Klaus W. Frommer¹, Stefan Rehart², Ulf Müller-Ladner¹ and Elena Neumann³, ¹Internal Medicine and Rheumatology, Justus-Liebig-University of Gießen, Kerckhoff-Klinik, Bad Nauheim, Germany, ²Orthopedics and Trauma Surgery, Markus-Hospital, Frankfurt, Germany, ³Department of Internal Medicine and Rheumatology, Justus-Liebig-University of Gießen, Kerckhoff-Klinik, Bad Nauheim, Germany
Background/Purpose: Adiponectin, a C1q/tumour necrosis factor (TNF) homologue, was previously known to be secreted by adipocytes. Additionaly, it was found to be synthesized by other…
Abstract Number: 2735 • 2013 ACR/ARHP Annual Meeting
Integrative Analysis Of Multiple Omics Technologies Reveals a Novel Therapeutic Target For Rheumatoid Arthritis (RA)
David L. Boyle¹, John Whitaker², Beatrix Bartok³, Wei Wang⁴ and Gary S. Firestein⁵, ¹Div of Rheum, UCSD School of Medicine, La Jolla, CA, ²Chemistry, UCSD School of Medicine, La Jolla, CA, ³Rheumatology, UCSD School of Medicine, La Jolla, CA, ⁴Chemistry, UCSD, La Jolla, CA, ⁵Div of Rheumatology, UCSD School of Medicine, La Jolla, CA
Background/Purpose: Identifying novel therapeutic targets for immune-mediated disease has become increasingly challenging. We used an unbiased method to integrate multiple “omics” methodologies and evaluate…
Abstract Number: 2426 • 2013 ACR/ARHP Annual Meeting
Signaling Abnormalities In Neutrophil Granulocytes Of Rheumatoid Arthritis Patients Are Associated With Increased Extracellular Trap Formation and Provide a Basis For The Induction Of Anti-Citrullinated Peptide Antibodies
Chanchal Sur Chowdhury¹, Stavros Giaglis^2,3, Ulrich A. Walker⁴, Andreas Buser⁵, Paul Hasler² and Sinuhe Hahn⁶, ¹Dept. of Biomedicine, Laboratory of Prenatal Diagnostics, University Hospital Basel, Basel, Switzerland, ²Dept. of Rheumatology, Kantonsspital Aarau, Aarau, Switzerland, ³Dept. of Biomedicine, Laboratory of Prenatal Madicine, University Hospital Basel, Basel, Switzerland, ⁴Department of Rheumatology, University Hospital Basel, Basel, Switzerland, Basel, Switzerland, ⁵Division of Hematology; Swiss Red Cross Blood Transfusion Centre, University Hospital Basel, Basel, Switzerland, ⁶Dept. of Biomedicine, Laboratory for Prenatal Medicine, University Hospital Basel, Basel, Switzerland
Background/Purpose: Rheumatoid arthritis (RA) is often associated with anti-citrullinated peptide antibodies (ACPAs) in the serum. While ACPAs have been associated with increased inflammation, joint destruction…
Abstract Number: 2288 • 2013 ACR/ARHP Annual Meeting
Novel Biomarkers From Peripheral Blood Mononuclear Cells Indicate Disease Activity In Rheumatoid Arthritis Patients
Jason Ptacek¹, Rachael Hawtin², Brent Louie¹, Erik Evensen¹, James Cordeiro¹, Barbara Mittleman¹, Michelle Atallah¹, Alessandra Cesano², Clifton O. Bingham III³, Stacey Cofield⁴, Jeffrey R. Curtis⁵, Maria I. Danila⁴, Richard A. Furie⁶, MC Genovese⁷, Marc C. Levesque⁸, Larry W. Moreland⁸, Peter A. Nigrovic⁹, James R. O'Dell¹⁰, William H. Robinson¹¹, Nancy A. Shadick⁹, E. William St Clair¹², Christopher C. Striebich¹³, Geoffrey M Thiele¹⁴, Peter K. Gregersen⁶ and S. Louis Bridges Jr.⁴, ¹Nodality, Inc., South San Francisco, CA, ²Nodality Inc., South San Francisco, CA, ³Rheumatology, Johns Hopkins University, Baltimore, MD, ⁴University of Alabama at Birmingham, Birmingham, AL, ⁵Epidemiology, University of Alabama at Birmingham, School of Public Health, Birmingham, AL, ⁶The Feinstein Institute for Medical Research and North Shore-Long Island Jewish Health System, Lake Success, NY, ⁷Stanford University, Palo Alto, CA, ⁸University of Pittsburgh, Pittsburgh, PA, ⁹Brigham and Women's Hospital/Harvard University, Cambridge, MA, ¹⁰Veteran Affairs Nebraska Western Iowa Health Care System and University of Nebraska Medical Center, Omaha, NE, ¹¹VA Palo Alto Health Care System and Stanford University, Palo Alto, CA, ¹²Medicine, Duke Unversity Medical Center, Durham, NC, ¹³University of Colorado Denver, Aurora, CO, ¹⁴Omaha VA and the University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Biomarkers reflecting immune function and associating with disease activity can help stratify rheumatoid arthritis (RA) patients (pts) in practice and in clinical trials.…
Abstract Number: 1775 • 2012 ACR/ARHP Annual Meeting
The Phosphoinositide 3-Kinase Pathway Regulates Fibroblast-Like Synoviocyte Invasion
Beatrix Bartok¹, Deepa Hammaker² and Gary S. Firestein³, ¹Rheumatology, UCSD, La Jolla, CA, ²MC 0656, Univ of California San Diego, La Jolla, CA, ³Div of Rheumatology, UCSD School of Medicine, La Jolla, CA
Background/Purpose: Cartilage destruction mediated by invasive fibroblast-like synoviocytes (FLS) plays a central role in pathogenesis of RA. Increased cell migration and degradation of extracellular matrix…

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