Abstracts tagged "complement"

Abstract Number: 1200 • 2014 ACR/ARHP Annual Meeting
Plasma Levels of Pattern Recognition Molecules of the Lectin Pathway Are Altered in SLE Patients
Anne Troldborg^1,2, Steffen Thiel³, Magdalena Janina Laska³, Bent Deleuran^4,5, Jens Christian Jensenius³ and Kristian Stengaard-Pedersen^2,6, ¹clinical medicine, Aarhus University, Aarhus, Denmark, ²Rheumatology, Aarhus University Hospital, Aarhus, Denmark, ³Biomedicine, Aarhus University, Aarhus, Denmark, ⁴Department of Biomedicine, Aarhus University, Aarhus, Denmark, ⁵Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark, ⁶Clinical medicine, Aarhus University, Aarhus, Denmark
Background/Purpose Systemic Lupus Erythematosus (SLE) is a complex autoimmune disease where the Complement System plays a key role in the pathogenesis. The objective of this…
Abstract Number: 938 • 2014 ACR/ARHP Annual Meeting
C1q Is Mandatory for Disease Development in Experimental Arthritis and Expression of Its Receptors Correlates with Disease Activity in Patients
Matthieu Ribon¹, Julie Mussard¹, Roxane Herve¹, Marina Botto², Marie-Christophe Boissier³ and Patrice Decker¹, ¹INSERM UMR 1125, Li2P, University Paris 13, Sorbonne Paris Cité and Rheumatology Department, Avicenne Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Bobigny, France, ²Centre for Complement & Inflammation Research, Imperial College, London, United Kingdom, ³INSERM UMR 1125, Li2P, University Paris 13, Sorbonne Paris Cité, Bobigny, France
Background/Purpose The complement system is a major effector mechanism of innate and adaptive immunity. It is activated in rheumatoid arthritis (RA) patients but the pathway…
Abstract Number: 2844 • 2014 ACR/ARHP Annual Meeting
Intracellular Complement C3 Is Exposed on the Cell Surface upon Apoptosis Induction and Participates in the Clearance of Apoptotic Cells By Phagocytes
Lucrezia Colonna¹, Christian Lood¹, YuFeng Peng², Xizhang Sun³, Lena Tanaka³, Sandip Panicker⁴ and Keith B. Elkon³, ¹Department of Medicine, Division of Rheumatology, University of Washington, Seattle, WA, ²Rheumatology, University of Washington, Seattle, WA, ³Division of Rheumatology, University of Washington, Seattle, WA, ⁴True North Therapeutics, South San Francisco, CA
Background/Purpose The complement system has been viewed as a predominantly serum-derived host defense mechanism with multiple functions, including clearance of apoptotic cells. Defective function of…
Abstract Number: 2299 • 2014 ACR/ARHP Annual Meeting
M-Ficolin and Masp-2 As Inflammatory Markers in Oligoarticular and Systemic Juvenile Idiopathic Arthritis
Christine Petri¹, Steffen Thiel², Jens Christian Jensenius² and Troels Herlin¹, ¹Pediatric Rheumatology Clinic, Department of Pediatrics, Aarhus University Hospital, Aarhus, Denmark, ²Biomedicine, Aarhus University, Aarhus, Denmark
Background/Purpose The lectin pathway of the complement plays a crucial role in the pathogenesis of various inflammatory processes. The lectin pathway proteins are activated through…
Abstract Number: 2892 • 2013 ACR/ARHP Annual Meeting
Masp-1/3 Deficient MRL/Lpr Mice Lack The Alternative Complement Pathway Activation and Are Protected From Development Of Lupus-Like Glomerulonephritis
Takeshi Machida¹, Natsumi Sakamoto¹, Teizo Fujita¹, Minoru Takahashi² and Hideharu Sekine¹, ¹Immunology, Fukushima Medical University School of Medicine, Fukushima, Japan, ²Department of Immunology, Fukushima Medical University School of Medicine, Fukushima, Japan
Background/Purpose: Complement has both protective and pathogenic functions in lupus due to a balance between its role in the clearance of immune complexes (ICs) and…
Abstract Number: 2703 • 2013 ACR/ARHP Annual Meeting
An Intronic CR2 Polymorphism Associated With Systemic Lupus Erythematosus Alters CTCF Binding and CR1 Expression
Jian Zhao¹, Brendan M. Giles², Rhonda L. Taylor³, Gabriel A. Yette², Kara M. Lough², Lawrence J. Abraham³, Hui Wu⁴, Patrick M. Gaffney⁵, Jennifer A. Kelly⁶, Kenneth M. Kaufman^7,8, John B. Harley^9,10, Carl D. Langefeld¹¹, Elizabeth E. Brown¹², Jeffrey C. Edberg¹³, Robert P. Kimberly¹⁴, Daniela Ulgiati³, Betty P. Tsao¹ and Susan A. Boackle¹⁵, ¹Division of Rheumatology, Department of Medicine, David Geffen School of Medicine University of California Los Angeles, Los Angeles, CA, ²University of Colorado School of Medicine, Aurora, CO, ³University of Western Australia, Perth, Western Australia, Australia, ⁴Rheumatology, David Geffen School of Medicine University of California Los Angeles, Los Angeles, CA, ⁵Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁶Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁷U.S. Department of Veterans Affairs Medical Center, Cincinnati, OH, ⁸1Center for Autoimmune Genomics and Etiology and Rheumatology Division, Cincinnati Children’s Hospital Medical Center and the University of Cincinnati, Cincinnati, OH, ⁹Division of Rheumatology and The Center for Autoimmune Genomics & Etiology, University of Cincinnati, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, ¹⁰US Department of Veterans Affairs Medical Center, Cincinnati, OH, ¹¹Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC, ¹²University of Alabama at Birmingham, Birmingham, AL, ¹³Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, ¹⁴Clinical Immun & Rheumatology, University of Alabama at Birmingham, Birmingham, AL, ¹⁵Medicine/Rheumatology, University of Colorado School of Medicine, Aurora, CO
Background/Purpose: Systemic lupus erythematosus (SLE) is characterized by the production of antibodies to nuclear antigens, which form immune complexes that deposit in tissues and cause…
Abstract Number: 1865 • 2013 ACR/ARHP Annual Meeting
Complement Activation and Anaphylatoxin Generation In Response To Staphylococcal Protein A Exposure: Ex Vivo and In Vivo Human Studies
Edward Bernton¹, Antonio Polley², Susan Zondlo², Lynne Mitchell³ and Dennis Hourcade³, ¹Protalex Inc., Summit, NJ, ²QPS Holdings LLC, Newark, DE, ³Division of Rheumatology, Washington University School of Medicine, St. Louis, MO
Background/Purpose: PRTX-100, a highly-purified GMP staphylococcal protein A (SpA), is currently in clinical trials treating patients with active rheumatoid arthritis (RA). It has been reported…
Abstract Number: 1765 • 2013 ACR/ARHP Annual Meeting
Complement Component C5a Permits The Co-Existence Of Pathogenic Th17 Cells and Type I Interferon In Lupus
Marc C. Levesque¹, Sudesh Pawaria², Kelly Maers² and Partha Biswas³, ¹Division of Rheumatology and Clinical Immunology, University of Pittsburgh, Pittsburgh, PA, ²Dept. of Medicine, University of Pittsburgh, Pittsburgh, PA, ³Medicine, University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Systemic lupus erythematosus (SLE) is a type I interferon (IFN-I)-driven autoimmune disorder with exaggerated B and T-helper (Th) cell responses. Th17 cells, a recently…
Abstract Number: 542 • 2013 ACR/ARHP Annual Meeting
Evidence For Involvement Of C5a Receptor in Human and Murine Lupus Nephritis
Constanze Hess¹, Ditte Tornehave², Peter Helding Kvist², Yvonne Sundström³, Louise Berg³, Iva Gunnarsson⁴, Søren Jacobsen⁵, Claus Haase¹ and Lars Hornum¹, ¹Department of Immunopharmacology, Novo Nordisk A/S, Måløv, Denmark, ²Department of Histology, Novo Nordisk A/S, Måløv, Denmark, ³Rheumatology Unit, Karolinska Institutet, Stockholm, Sweden, ⁴Department of Medicine, Rheumatology Unit, Karolinska Institutet, Stockholm, Sweden, ⁵Department of Rheumatology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
Background/Purpose: The complement system plays an important role in the pathogenesis of systemic lupus erythematosus (SLE). Apart from the activation of the early components of…
Abstract Number: 20 • 2013 ACR/ARHP Annual Meeting
Complement Deposition On Platelets Is Associated To Venous Thrombosis In Systemic Lupus Erythematosus
Christian Lood¹, Helena Tydén¹, Birgitta Gullstrand², Gunnar Sturfelt³, Andreas Jönsen¹, Lennart Truedsson² and Anders A. Bengtsson¹, ¹Department of Clinical Sciences, Section of Rheumatology, Lund University, Lund, Sweden, ²Department of Laboratory Medicine, Section of Microbiology, Immunology and Glycobiology, Lund University, Lund, Sweden, ³Department of Clinical Sciences Lund, Section of Rheumatology, Lund University, Lund, Sweden
Background/Purpose: Anti-phospholipid (aPL) antibodies are associated with development of venous thrombosis and stroke in the autoimmune disease systemic lupus erythematosus (SLE). The underlying mechanism for…

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