Abstracts tagged "Animal models"

Abstract Number: 2084 • 2012 ACR/ARHP Annual Meeting
ASP015K: A Novel JAK Inhibitor Demonstrated Potent Efficacy in Adjuvant-Induced Arthritis Model in Rats
Shunji Yamazaki¹, Masamichi Inami¹, Misato Ito¹, Yasutomo Fujii¹, Kaori Hanaoka¹, Kaoru Yamagami¹, Kenji Okuma¹, Yoshiaki Morita¹, Shohei Shirakami², Takayuki Inoue², Susumu Miyata³ and Yasuyuki Higashi¹, ¹Pharmacology Research Labs, Astellas Pharma Inc., Tsukuba, Japan, ²Chemistry Research Labs, Astellas Pharma Inc., Tsukuba, Japan, ³Research Planning & Administration, Astellas Pharma Inc., Tsukuba, Japan
Background/Purpose: The Janus kinase (JAK) family of enzymes plays a key role in cytokine signaling, which is involved in the pathogenic events of immune-mediated disorders…
Abstract Number: 1507 • 2012 ACR/ARHP Annual Meeting
Propylthiouracil Reduces Fibrosis in Chronic Oxidant Stress Mouse Model of Scleroderma
Gianluca Bagnato¹, Alessandra Bitto², Natasha Irrera², Gabriele Pizzino², Neal Roberts³, Maurizio Cinquegrani⁴, Donatella Sangari¹, Francesco Squadrito², Gianfilippo Bagnato¹ and Antonino Saitta⁴, ¹Rheumatology, University of Messina, Messina, Italy, ²Pharmacology, University of Messina, Messina, Italy, ³Medical College of Virginia, Richmond, VA, ⁴Internal Medicine, University of Messina, Messina, Italy
Background/Purpose: Systemic sclerosis (SSc) is characterized by fibrosis of skin and visceral organs; vascular damage and resultant ischemia; and immunological dysregulation manifested by autoantibodies. Hypothyroidism,…
Abstract Number: 734 • 2012 ACR/ARHP Annual Meeting
Chemokine (C-C Motif) Receptor 2 Signaling Mediates Persistent Pain in Experimental Osteoarthritis
Rachel E. Miller¹, Phuong Tran², Rosalina Das², Nayereh Ghoreishi-Haack², Richard J. Miller³ and Anne-Marie Malfait⁴, ¹Rheumatology/Biochemistry, Rush University Medical Center, Chicago, IL, ²Rheumatology, Rush University Medical Center, Chicago, IL, ³Molecular Biochemistry and Pharmacology, Northwestern University, Chicago, IL, ⁴Internal Medicine/Biochemistry, Rush University Medical Center, Chicago, IL
Background/Purpose: To investigate the role of MCP-1/CCR2 in the development of pain in osteoarthritis (OA) using a mouse model, destabilization of the medial meniscus (DMM).…
Abstract Number: 35 • 2012 ACR/ARHP Annual Meeting
Changes in Tibial Bone and Cartilage Structure in a Mouse Surgical Model of Osteoarthritis
Brett A. Tonkin¹, Evange Romas², Natalie A. Sims¹ and Nicole C. Walsh¹, ¹St Vincent's Institute of Medical Research, Melbourne, Australia, ²Dept. of Rheumatology, St Vincent's Hospital, Melbourne, Australia
Background/Purpose: The destabilisation of the medial meniscus (DMM) mouse osteoarthritis (OA) model is commonly used to study OA joint degeneration. In DMM-OA, the knee is…
Abstract Number: 2085 • 2012 ACR/ARHP Annual Meeting
T Cell-Mediated Murine Antigen-Induced Arthritis Is Resistant to Transgenic Disruption of Glucocorticoid Signaling in Osteoblasts and Osteocytes in Vivo
Cornelia M. Spies¹, Edgar Wiebe¹, Jinwen W. Tu², Aiqing Li², Timo Gaber¹, Dörte Huscher¹, Markus J. Seibel², Hong Zhou² and Frank Buttgereit³, ¹Department of Rheumatology and Clinical Immunology, Charité University Medicine, Berlin, Germany, ²Bone Research Program, ANZAC Research Institute, The University of Sydney, Concord, Australia, ³Charité - Universitätsmedizin Berlin, Berlin, Germany
Background/Purpose: The role of endogenous glucocorticoids (GC) in, and their contribution to the susceptibility and severity of rheumatoid arthritis remains inconclusive. We previously demonstrated that…
Abstract Number: 1513 • 2012 ACR/ARHP Annual Meeting
TSLP Receptor Deficiency Reduces IL-13 Expression and Prevents Fibrosis in Experimental Scleroderma
Alicia Usategui¹, Vanessa Miranda¹, Gabriel Criado², Manuel J. Del Rey¹, Elena Izquierdo¹, Warren J. Leonard³ and Jose L. Pablos¹, ¹Servicio de Reumatología, Instituto de Investigación Hospital 12 de Octubre (I+12), Madrid, Spain, ²Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (I+12), Madrid, Spain, ³Laboratory of Molecular Immunology and Immunology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
Background/Purpose: Systemic sclerosis (SSc) is an autoimmune disease characterized by progressive fibrosis of the skin and internal organs. Although SSc shares pathogenetic features with other…
Abstract Number: 738 • 2012 ACR/ARHP Annual Meeting
A Novel Orally Active Phosphatidylinositol 3-Phosphate 5-Kinase (PIKfyve) Inhibitor Ameliorates Mouse Psoriasis-Like Model by Inhibition of Interleukin-12 and Interleukin-23 Production From Macrophages
Ayatoshi Andou, Eviryanti Agung, Yukie Seki, Yoichiro Shima, Sen Takeshita, Takashi Yamamoto and Hiroyuki Eda, Exploratory Research Laboratories, Ajinomoto Pharmaceuticals Co., Ltd., Kanagawa, Japan
Background/Purpose: Phosphatidylinositol (3,5)-bisphosphate (PI(3,5)P2) is the most recently-identified phospholipid component of cellular membrane. Phosphatidylinositol 3-phosphate 5-kinase (PIKfyve) is a critical enzyme for the synthesis of…
Abstract Number: 37 • 2012 ACR/ARHP Annual Meeting
Development of a Mouse Model of Natural Osteoarthritis of Knee by Induction of obesity and Bipedal Walking
Hyun Ah Kim¹, Su Jin Park², Eun-Jeong Cheon³, Hyun A. Jung⁴ and Kyeong Min Son⁵, ¹Division of Rheumatology, Department of Internal Medicine, Hallym university, Kyunggi, South Korea, ²Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, South Korea, ³Department of internal medicine, Hallym University Sacred Heart Hospital, Kyunggi, South Korea, ⁴Division of Rheumatology, Department of Internal Medicine, Hallym university sacred heart hospital, Kyunggi, South Korea, ⁵Division of Rheumatology, Department of Internal Medicine, Hallym university Chunchun sacred heart hospital, Chunchun, South Korea
Background/Purpose: Animal models of osteoarthritis(OA) are used extensively in research of its pathogenesis and in search of disease modifying anti-OA drugs. However, whether current animal models…
Abstract Number: 2086 • 2012 ACR/ARHP Annual Meeting
PI3-Kinase Controls Inflammatory Bone Destruction by Regulating the Osteoclastogenic Potential of Myeloid Cells
Stephan Blueml¹, Gernot Schabbauer², Antonia Puchner³, Emine Sahin², Victoria Saferding⁴, Birgit Niederreiter⁵, Josef S. Smolen⁶ and Kurt Redlich⁵, ¹Division of Rheumatology, Medical University of Vienna, Vienna, Austria, ²Vascular Biology and Thrombosis research, Medical University Vienna, Vienna, Austria, ³Dpt of Rheumatology, Medical University Vienna, Vienna, Austria, ⁴Rheumatology, Medical University of Vienna, Vienna, Austria, ⁵Department of Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria, ⁶Division of Rheumatology, Department of Internal Medicine III,, Medical University of Vienna and Hietzing Hospital, Vienna, Austria
Background/Purpose: Local bone destruction in rheumatoid arthritis, psoriasisarthritis or ankylosing spondylitis is a serious health burden and the major cause of disability and severely reduced…
Abstract Number: 1440 • 2012 ACR/ARHP Annual Meeting
Lupus-Prone Mice Demonstrate Enhanced Neutrophil Extracellular Trap Formation: Implications for Autoantibody Formation and Organ Damage
Jason S. Knight¹, Alexander A. O'Dell¹, Wenpu Zhao², Ritika Khandpur², Srilakshmi Yalavarthi² and Mariana J. Kaplan³, ¹Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²University of Michigan Rheumatology, Ann Arbor, MI, ³Systemic Autoimmunity Branch, National Institutes of Health/NIAMS, Bethesda, MD
Background/Purpose: Recent evidence suggests that enhanced neutrophil extracellular trap (NET) formation—the programmed release of chromatin fibers decorated with granular antimicrobial peptides—is as an important activator…
Abstract Number: 731 • 2012 ACR/ARHP Annual Meeting
A Systems Biology Approach to Elucidating Pathways Active During the Development of Osteoarthritis
Richard F. Loeser¹, Amy L. Olex², Brian Westwood², Margaret A. McNulty³, Cathy S. Carlson³, Michael Callahan⁴, Cristin Ferguson⁴ and Jacquelyn S. Fetrow², ¹Section Of Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, ²Computer Science, Wake Forest University, Winston-Salem, NC, ³Veterinary and Diagnostic Medicine, University of Minnesota, St. Paul, MN, ⁴Orthopedic Surgery, Wake Forest School of Medicine, Winston-Salem, NC
Background/Purpose: OA affects the entire joint but most studies have focused on the disease process in a single tissue. In this study, we identified genes…
Abstract Number: 25 • 2012 ACR/ARHP Annual Meeting
Activation of the Canonical Wnt Signaling Pathway Is Tissue Dependent in Osteoarthritic Joints: Distinct Mechanisms of Regulation by Wnt Antagonists
Thomas Funck-Brentano¹, Wafa Bouaziz¹, Hilene Lin¹, Valerie Geoffroy¹, Eric Hay¹ and Martine Cohen-Solal², ¹INSERM U606 Paris 7 university, Paris, France, ²Rhumatologie A, INSERM U606 Hôpital Lariboisière, Centre Viggo Petersen, Paris, France
Background/Purpose: Wnt signaling pathway is a major regulator of bone and cartilage remodeling. Modulation of this pathway has lead to controversial results on joint cartilage…
Abstract Number: 2088 • 2012 ACR/ARHP Annual Meeting
Annexin A1 Receptor Agonist Suppresses Development of Inflammatory Arthritis
Yuan Hang Yang¹, Yuan Jia², Wenping Kao¹, Wuqi Song³, Zhan-guo Li⁴ and Eric F. Morand¹, ¹Centre for Inflammatory Diseases, Monash University, Melbourne, Australia, ²Department of Rheumatology and Immunology,Clinical Immunology Center, Peking University People's Hospital, Beijing, China, ³Harbin Medical University, Harbin, China, ⁴Rheumatology, Peking University People's Hospital, Beijing, China
Background/Purpose: Annexin A1 (AnxA1) is recognized as an endogenous anti-inflammatory molecule. An AnxA1 receptor, formyl-peptide receptor 2 (FPR2), has been identified in human and mice.…
Abstract Number: 1441 • 2012 ACR/ARHP Annual Meeting
Epstein Barr Virus CD40 Functional Mimic Latent Membrane Protein-1 Drives Cellular Molecular Mimicry in the Presence of Epstein Barr Virus Nuclear Antigen-1 in a Novel Murine Model of Lupus-Like Disease
Melissa E. Munroe¹, Jourdan R. Anderson², Timothy F. Gross³, Laura L. Stunz⁴, Gail A. Bishop⁴ and Judith A. James⁵, ¹Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, ²Arthritis & Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ³Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁴The University of Iowa, Iowa City, IA, ⁵Oklahoma Medical Research Foundation; University of Oklahoma Health Sciences Center, Oklahoma City, OK
Background/Purpose: Immune dysregulation underlies the complex pathogenesis of SLE. Infection with Epstein Barr Virus (EBV) and expression of latent protein Epstein Barr Virus Nuclear Antigen-1…
Abstract Number: 585 • 2012 ACR/ARHP Annual Meeting
Relative Overexpression of Membrane-Bound Versus Soluble TNF in Human and Experimental Spondyloarthritis
Carmen Ambarus¹, Leonie M. van Duivenvoorde¹, Huriatul Masdar¹, Melissa N. van Tok², Paul P. Tak¹, Nataliya Yeremenko³ and Dominique L. Baeten³, ¹Clinical Immunology and Rheumatology, Academic Medical Center / University of Amsterdam, Amsterdam, Netherlands, ²Division of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Center / University of Amsterdam, Amsterdam, Netherlands, ³Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands
Background/Purpose: Macrophages and their pro-inflammatory cytokines, including TNF, are pivotal mediators of chronic synovitis in rheumatoid arthritis (RA) as well as spondyloarthritis (SpA). Despite similar…

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