Abstracts tagged "macrophages"

Abstract Number: 1078 • 2012 ACR/ARHP Annual Meeting
Prolactin Is Increased in Responders to Anti-TNFá Treatment and the Role of the Prolactin Receptor in Rheumatoid Arthritis
Man Wai Tang¹, Danielle Marie Gerlag², Veronica Codullo³, Elsa Vieira-Sousa⁴, Anne Q. Reuwer⁵, Marcel T. Twickler⁵, Robert B. M. Landewé⁶ and Paul Peter Tak⁷, ¹Division of Clinical Immunology and Rheumatology & Department of Experimental Immunology, Academic Medical Center / University of Amsterdam, Amsterdam, Netherlands, ²Clinical Immunology and Rheumatology, Academic Medical Center, Amsterdam, Netherlands, ³Rheumatology, IRCCS Policlinico San Matteo Foundation, Pavia, Italy, ⁴Rheumatology Research Unit, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal, ⁵Vascular Medicine, Academic Medical Center/University of Amsterdam, Amsterddam, Netherlands, ⁶Academic Medical Center/University of Amsterdam & Atrium Medical Center, Amsterdam, Netherlands, ⁷Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands
Background/Purpose: Rheumatoid arthritis (RA) is the most common rheumatic disease which mainly affects women. In the last decade, it is known that prolactin (PRL) is…
Abstract Number: 1057 • 2012 ACR/ARHP Annual Meeting
A Specific Inhibitor of Spleen Tyrosine Kinase, PRT062607, Is a Potent Modulator of Innate Immune Cell Function
Lynn A. Kamen¹, Gillian Stephens¹, Anjali Pandey² and Uma Sinha¹, ¹Biology, Portola Pharmaceuticals, South San Francisco, CA, ²Chemistry, Portola Pharmaceuticals, South San Francisco, CA
Background/Purpose: Tumor Necrosis Factor-α (TNF-α) is an essential component of the inflammatory stimuli leading to rheumatoid arthritis (RA). Therapeutics targeting TNF-α are the standard of…
Abstract Number: 901 • 2012 ACR/ARHP Annual Meeting
Colony-Stimulating Factor (CSF) Receptor 1 Blockade Overcomes Overlapping Effects of M-CSF and Interleukin-34 On Myeloid Differentiation and Gene Expression to Reduce Inflammation in Human and Murine Models of Rheumatoid Arthritis
Samuel Garcia¹, Linda M. Hartkamp², Inge E. van Es², Haishan Lin³, Li Long³, Emma L. Masteller³, Brian R. Wong³, Paul P. Tak⁴ and Kris A. Reedquist², ¹Department of Experimental Immunology, Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ²Department of Experimental Immunology, Division of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands, ³Five Prime Therapeutics, Inc., South San Francisco, CA, ⁴Department of Experimental Immunology, Division of Clinical Immunology and Rheumatology, Academic Medical Center, University of Amsterdam and GlaxoSmithKline, Amsterdam, Netherlands
Background/Purpose: Disease activity and response to therapy in RA correlates with changes in synovial macrophage numbers and their products. M-CSF or IL-34 stimulation of their…
Abstract Number: 880 • 2012 ACR/ARHP Annual Meeting
Interferon Regulatory Factor 8 Regulates BAFF Production in Murine Macrophages and Is a Nexus for Cross Talk Between IFN-γ and TGF-β
Weijia Yuan¹, Sanjay Gupta², Jane E. Salmon³ and Alessandra B. Pernis², ¹Rheumatology, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY, ²Autoimmunity & Inflammation, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY, ³Dept of Medicine, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY
Background/Purpose: Lupus is a systemic autoimmune disease that can lead to severe end-organ damage characterized by unabated inflammation and aberrant tissue repair. Macrophage dysregulation plays…
Abstract Number: 882 • 2012 ACR/ARHP Annual Meeting
Anti-Inflammatory Effects of Phosphodiesterase 4 Inhibition Are Mediated by Mitogen-Activated Protein Kinase Phosphatase-1
Riku Korhonen, Tuija Hömmö, Mirka Laavola, Tiina Keränen, Mari Hämäläinen and Eeva Moilanen, The Immunopharmacology Research Group, University of Tampere School of Medicine and Tampere University Hospital, Tampere, Finland
Background/Purpose: MAP kinase phosphatase-1 (MKP-1) is a nuclear tyrosine/threonine phosphatase that limits p38 MAP kinase activity. MKP-1 KO mice display excessive inflammatory response, and exhibit…
Abstract Number: 733 • 2012 ACR/ARHP Annual Meeting
Intra-Articular Injection of Adipose-Derived Stem Cells Inhibits Activation of the Synovium and Protects Against Cartilage Damage and Enthesophyte Formation in Murine Experimental Osteoarthritis
Peter L.E.M. van Lent¹, Menno C. ter Huurne², Arjen B. Blom³, Rik Schelbergen³, Louis Casteilla⁴, Thomas Vogl⁵, Johannes Roth⁵, Roxane Blattes⁴, Christian Jorgensen⁶ and Wim B. van den Berg⁷, ¹Rheumatology Research & Advanced Therpeutics, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands, ²Rheumatology, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands, ³Rheumatology Research & Advanced Therapeutics, Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands, ⁴STROMALab UPS/CNRS UMR5273, INSERM U1031, Toulouse, France, ⁵Institute of Immunology, University of Muenster, Munster, Germany, ⁶Department of therapy & Immuno-Rhumatology, Hospital Lapeyronie, Montpellier, France, ⁷Experimental Rheumatology (272), Radboud university medical center, Nijmegen, Netherlands
Background/Purpose: OA lesions are treated with mesenchymal stem cells aiming to enhance tissue repair by transformation to eg. chondrocytes. Recently it has been shown that…
Abstract Number: 666 • 2012 ACR/ARHP Annual Meeting
Leukadherin 1, a CR3 Mimetic, Negatively Regulates Toll Like Receptor (TLR) Dependent Inflammatory Responses via Degradation of an Adaptor Protein
Kristen Lee¹, Joanne H. Reed², Vineet Gupta³, Tejaskumar Patel², Jill P. Buyon⁴ and Robert M. Clancy², ¹Rheumatology, NYU Langone Medical Center, New York, NY, ²Medicine, New York University School of Medicine, New York, NY, ³Division of Nephrology and Hypertension, Department of Medicine, University of Miami, Miami, FL 33136, U.S.A., Miami, FL, ⁴Department of Medicine, Division of Rheumatology, New York University School of Medicine, New York, NY
Background/Purpose: Systemic Lupus Erythematosus is characterized by continuous and cyclic stimulation of the innate immune system by endogenous nucleic acids. Immune complexes of Ro60, ssRNA…
Abstract Number: 344 • 2012 ACR/ARHP Annual Meeting
Non Classical Monocytes Are Required for Initiation Phase While Macrophages Are Necessary for the Resolution Phase in the K/BxN Murine of Inflammatory Arthritis
Alexander V. Misharin¹, G. Kenneth Haines III² and Harris R. Perlman³, ¹Medicine/Rheumatology, Northwestern University, Chicago, IL, ²Department of Pathology, Yale University, New Haven, CT, ³Feinberg School of Medicine, Northwestern University, Chicago, IL
Background/Purpose: Monocytes and macrophages play an essential function in the pathogenesis of rheumatoid arthritis. However, monocytes and macrophages are a heterogenous population and thus the…

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