Abstracts tagged "Animal models"

Abstract Number: 3005 • 2014 ACR/ARHP Annual Meeting
Essential Role for Alternately Spliced Tenascin C and TLR4 Signaling in Persistent Organ Fibrosis
Swati Bhattacharyya^1,2, Wenxia Wang¹, Luisa Morales-Nebreda³, Katja Lakota³, Robert Lafyatis⁴, Monique E. Hinchcliff⁵, GR Scott Budinger³, Zenshiro Tamaki³ and John Varga⁶, ¹Medicine/Rheumatology, Northwestern University, Feinberg School of Medicine, Chicago, IL, ²Division of Rheumatology, Northwestern University, Feinberg School of Medicine, Chicago, IL, ³Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL, ⁴Rheumatology, Boston University School of Medicine, Boston, MA, ⁵Northwestern University, Feinberg School of Medicine, Chicago, IL, ⁶Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL
Background/Purpose Transforming growth factor-beta stimulates collagen synthesis and myofibroblast differentiation, and is implicated as a key initiating factor in pathological tissue remodeling in scleroderma. However,…
Abstract Number: 2169 • 2014 ACR/ARHP Annual Meeting
Targeting ITGAM+ Cells Successfully Treats a Model of Anti-RNP-Associated Pulmonary Hypertension
Vineet Gupta¹, Yunjuan Zang², Karen Young³, Jian Huang³, Irina Fernandez² and Eric L. Greidinger^2,4, ¹Drug Discovery Center, Rush University Medical Center, Chicago, IL, ²Rheumatology, University of Miami, Miami, FL, ³Pediatrics, University of Miami, Miami, FL, ⁴Miami VAMC, Miami, FL
Background/Purpose: Aggressive immunotherapy has shown modest effectiveness for pulmonary hypertension in anti-RNP Autoimmunity, but with high morbidity. We studied the ability of an ITGAM-targeted therapy…
Abstract Number: 774 • 2014 ACR/ARHP Annual Meeting
Endothelin-1 Synergistically Increases TGF-β-Induced Hif1α Expression Under Normoxic Conditions during Endothelial-to-Mesenchymal Transition in Murine Endothelial Cells. a Novel Mechanism for the Fibrogenic Effects of Endothelin
Peter J. Wermuth and Sergio A. Jimenez, Jefferson Institute of Molecular Medicine, Division of Connective Tissue Diseases and Scleroderma Center,Thomas Jefferson University, Philadelphia, PA
Background/Purpose: Tissue hypoxia is a consequence of vascular damage and Hif-1α accumulation is a major mechanism of hypoxia response pathways. HIF-1α induces the transcriptional upregulation…
Abstract Number: 328 • 2014 ACR/ARHP Annual Meeting
Etanercept, Abatacept and Anakinra Treatment Ameliorates Inflammation and Pain in a Novel Mono-Arthritic Multi-Flare Model of Streptococcal Cell Wall Induced Arthritis: Further Characterization in a Rodent Model of Collagen Induced Arthritis
Kalyan Chakravarthy¹, Robert Faltus¹, Anwar Murtaza¹ and Milenko Cicmil², ¹Pharmacology, Merck Research Laboratories, Boston, MA, ²Merck Research Laboratories, Boston, MA
Background/Purpose: We developed a novel mono-arthritic multi-flare Rat Streptococcal Cell Wall (SCW) model which captures certain aspects of disease with flares and remission of inflammation…
Abstract Number: 2950 • 2014 ACR/ARHP Annual Meeting
Synovial Macrophages Promote TGF-β Activation after Intra-Articular Injections of Oxidized LDL in Naïve Murine Knee Joints, Preventing Production of Pro-Inflammatory Factors S100A8/9, Chemokines and Aggrecanase-Induced Neo-Epitopes
Wouter de Munter, Peter M. van der Kraan, Wim B. van den Berg and Peter L. van Lent, Experimental Rheumatology (272), Radboud university medical center, Nijmegen, Netherlands
Background/Purpose: In previous studies we found that synovial macrophages regulate joint pathology during experimental osteoarthritis (OA). Recently, we found that high systemic levels of LDL…
Abstract Number: 1971 • 2014 ACR/ARHP Annual Meeting
The Role of the Proinflammatory Mediator High-Mobility Group Box Protein 1 (HMGB1) in Anti-Collagen-Antibody-Induced Arthritis Is Dependent on Vascular Endothelial Growth Factor (VEGF)
Federico Biscetti¹, Andrea Flex², Giovanni Pecorini², Flavia Angelini², Vincenzo Arena³, Egidio Stigliano³, Barbara Tolusso¹, Elisa Gremese¹ and Gianfranco Ferraccioli¹, ¹Division of Rheumatology, Institute of Rheumatology and Affine Sciences, Catholic University of the Sacred Heart, Rome, Italy, ²Laboratory of Vascular Biology and Genetics, Catholic University School of Medicine, Rome, Italy, ³Department of Pathology, Catholic University School of Medicine, Rome, Italy
Background/Purpose High-mobility group box 1 (HMGB1) is a non-histone nuclear protein that is released extracellulary and has been implicated in rheumatoid arthritis (RA) and angiogenesis.…
Abstract Number: 773 • 2014 ACR/ARHP Annual Meeting
Functional Autoantibodies from Patients with Systemic Sclerosis Reactive to Angiotensin II Type 1and Endothelin-1 Type a Receptor Induce Inflammatory Lymphocyte Infiltration into Lungs of Mice
Angela Kill¹, Clement Braesch¹, Anja Kühl², Jeannine Guenther³, Mike O. Becker⁴, Gerd Burmester⁵, Thomas Walther⁶ and Gabriela Riemekasten⁷, ¹Rheumatology and clinical Immunology, Charité University Hospital, German Rheumatology Research Center, a Leibniz Institute, Berlin, Germany, ²Department of Internal Medicine, Charité University Hospital, Berlin, Germany, ³Rheumatology and Clinical Immunology, Charité University Hospital, German Rheumatology Research Center, a Leibniz Institute, Berlin, Germany, ⁴Rheumatology and Clinical Immunology, Charité University Hospital, Berlin, Germany, ⁵Department of Rheumatology and Clinical Immunology, Charité University Medicine, Berlin, Germany, ⁶Pharmacology & Therapeutics, University College Cork, Cork, Ireland, ⁷Charité University Hospital and German Rheumatism Research Centre, a Leibniz Institute, Berlin, Germany
Background/Purpose Functional autoantibodies reactive to the angiotensin II type 1 receptor (AT1R) and endothelin 1 type A receptor (ETAR) were found in elevated levels in…
Abstract Number: 327 • 2014 ACR/ARHP Annual Meeting
AMPK Activation in Inflammatory Arthritis
Monica Guma¹, Yun Wang² and Ru Liu-Bryan², ¹Division of Rheumatology, Allergy and Immunology, University of California, San Diego, La Jolla, CA, ²UCSD/VAMC, La Jolla, CA
Background/Purpose: AMP-activated protein kinase (AMPK) is a serine/threonine protein kinase involved in the regulation of cellular energy homeostasis. It is a central regulator of both…
Abstract Number: 2951 • 2014 ACR/ARHP Annual Meeting
Syndecan-4 Regulates Chondrocyte Phenotype and Cartilage Homeostasis Via the WNT Signaling Pathway
Charlotte Kimberley Clarke¹, Annelena Held¹, Richard Stange², Uwe Hansen³, Lars Godmann⁴, Jessica Bertrand⁵, Thomas Pap⁶, Giovanna Nalesso⁷, Frank Echtermeyer⁸, Francesco Dell'Accio⁹ and Joanna Sherwood⁷, ¹University Hospital Muenster, Institute of Experimental Musculoskeletal Medicine (IEMM), Muenster, 48149, Germany, ²Dept. of Trauma, Hand and Reconstructive Surgery, University Hospital Münster, Münster, Germany, ³Institute for Physiological Chemistry & Pathobiochemistry, University Hospital Münster, Münster, Germany, ⁴Institute of Experimental Muskuloskeletal Medicine, University Hospital Münster, Münster, Germany, ⁵Institute of Experimental Musculoskeletal Medicine, University Hospital Münster, Münster, Germany, ⁶Institute of Experimental Musculoskeletal Medicine, University Hospital Muenster, Muenster, Germany, ⁷Centre for Experimental Medicine and Rheumatology, Queen Mary University London, London, United Kingdom, ⁸Dept. of Anaesthesiology and Intensive Care Medicine, University Hospital Hannover, Hanover, Germany, ⁹William Harvey Research Institute, Barts and the London Queen Mary's School of Medicine and Dentistry, Centre for Experimental Medicine and Rheumatology, London, United Kingdom
Background/Purpose Syndecan-4 (Sdc4), family member of type I transmembrane heparan sulfate proteoglycans (HSPGs), is a regulator of various cartilage-related processes including osteoarthritis (OA). Blockade of…
Abstract Number: 1916 • 2014 ACR/ARHP Annual Meeting
Stromal Overexpression of Transmembrane TNF Induces Spa-like Arthritis and Spondylitis in Mice
Leonie M. van Duivenvoorde^1,2, Melissa N. van Tok³ and Dominique L. Baeten^1,4, ¹Clinical Immunology and Rheumatology, Academic Medical Center / University of Amsterdam, Amsterdam, Netherlands, ²Experimental Immunology, Department of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, Netherlands, ³Department of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Centre/University of Amsterdam, Amsterdam, Netherlands, ⁴Experimental Immunology, Academic Medical Center / University of Amsterdam, Amsterdam, Netherlands
Background/Purpose: The immunopathology of spondyloarthritis (SpA) is determined by inflammation and structural damage, in particular osteoproliferation, of axial and peripheral joints. The failure of TNF…
Abstract Number: 771 • 2014 ACR/ARHP Annual Meeting
Development of a Bifluorescent Lineage Tracker Reporter Mouse Strain to Analyze the Phenotypic Conversion of Endothelial Cells into Myofibroblasts in Vivo. Application to Study the Synergistic Effects of Endothelin-1 on TGF-β1-Induced Endothelial-to-Mesenchymal Transition
Peter J. Wermuth and Sergio A. Jimenez, Jefferson Institute of Molecular Medicine, Division of Connective Tissue Diseases and Scleroderma Center,Thomas Jefferson University, Philadelphia, PA
Background/Purpose: Endothelial-to-mesenchymal transition (EndoMT) may be a crucial pathway in generating activated myofibroblasts, cells that play a pivotal role in the development of tissue and…
Abstract Number: 324 • 2014 ACR/ARHP Annual Meeting
Regulation of TNF-α-Mediated Activation of Rheumatoid Synovial Fibroblasts By Transcription Factor Snail
Chrong-Reen Wang^1,2, Shih-Yao Chen³, Ai-Li Shiau⁴, I-Ming Jou^5,6, Ming-Fei Liu^1,2 and Chao-Liang Wu³, ¹Internal Medicine, National Cheng Kung University Medical College, Tainan, Taiwan, ²Internal Medicine, National Cheng Kung University Hospital, Tainan, Taiwan, ³Biochemistry and Molecular Biology, National Cheng Kung University Medical College, Tainan, Taiwan, ⁴Microbiology and Immunology, National Cheng Kung University Medical College, Tainan, Taiwan, ⁵Orthopedics, National Cheng Kung University Medical College, Tainan, Taiwan, ⁶Orthopedics, National Cheng Kung University Hospital, Tainan, Taiwan
Background/Purpose: Transcription factor Snail plays active roles in various biological functions and is involved in many disease states. We hypothesized that this molecule regulates TNF-α-mediated…
Abstract Number: 2952 • 2014 ACR/ARHP Annual Meeting
S100A9 Inhibitor Paquinimod (ABR-215757) reduces Joint Destruction in Experimental Osteoarthritis and Blocks Activating Effects of S100A9 in OA Synovium
Peter L. van Lent¹, Rik Schelbergen², Arjen B. Blom¹, Tomas Leanderson³, Helena Eriksson⁴ and Wim B. van den Berg⁵, ¹Experimental Rheumatology, Radboud university medical center, Nijmegen, Netherlands, ²Radboud university medical center, Nijmegen, Netherlands, ³Immunology Group, Lund University, Lund, Sweden, ⁴BioScience, Active Biotech AB, Lund, Sweden, ⁵Experimental Rheumatology (272), Radboud university medical center, Nijmegen, Netherlands
Background/Purpose Synovial activation is present in more than 50% of osteoarthritis (OA) patients and it is thought to be involved in the development of OA…
Abstract Number: 1725 • 2014 ACR/ARHP Annual Meeting
The SYK Inhibitor Fostamatinib Limits Tissue Damage and Fibrosis in a Bleomycin-Induced Scleroderma MOUSE MODEL
Omer Nuri Pamuk¹, Guray Can², Suleyman Ayvaz³, Turan Karaca⁴, Gulsum Pamuk⁵, Selim Demirtas⁶ and George C. Tsokos⁷, ¹Rheumatology, Trakya University Medical Faculty, Edirne, Turkey, ²Gastroenterology, Trakya University Medical Faculty, Edirne, Turkey, ³Pediatric Surgery, Trakya University Medical Faculty, Edirne, Turkey, ⁴Histology, Trakya University Medical Faculty, Edirne, Turkey, ⁵Hematology, Trakya University Medical Faculty, Edirne, Turkey, ⁶Trakya University Medical Faculty, Edirne, Turkey, ⁷Rheumatology, Beth Israel Deaconess Medical Center/Harvard Medical School, Boston, MA
Background/Purpose The possible antifibrotic effects of various kinase inhibitors has been studied before in SSc. Spleen tyrosine kinase (Syk) is a protein tyrosine kinase which…
Abstract Number: 766 • 2014 ACR/ARHP Annual Meeting
Endothelial Fli1 Deficiency Delays Wound Healing Due to Impaired Anastomosis of Newly Formed Vessels – a Possible Mechanism of Refractory Skin Ulcers in Systemic Sclerosis
Yoshihide Asano¹ and Maria Trojanowska², ¹Dermatology, University of Tokyo Graduate School of Medicine, Tokyo, Japan, ²Arthritis Center, Boston University, Boston, MA
Background/Purpose Systemic sclerosis (SSc) is a multisystem inflammatory and vascular disease resulting in fibrosis of the skin and certain internal organs. Although the pathogenesis of…

All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 10:00 AM ET on November 14, 2024. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

Violation of this policy may result in the abstract being withdrawn from the meeting and other measures deemed appropriate. Authors are responsible for notifying colleagues, institutions, communications firms, and all other stakeholders related to the development or promotion of the abstract about this policy. If you have questions about the ACR abstract embargo policy, please contact ACR abstracts staff at [email protected].