Abstracts tagged "complement"

Abstract Number: 2992 • 2016 ACR/ARHP Annual Meeting
In Systemic Lupus Erythematosus with Antiphospholipid Antibodies, Hypocomplementemia Associates with Thrombosis
Laura Durcan¹, Wei Fu² and Michelle Petri³, ¹University of Washington, Seattle, WA, ²Division of Rheumatology, School of Medicine, Johns Hopkins University, Baltimore, MD, ³Rheumatology Division, Johns Hopkins University School of Medicine, Baltimore, MD
Background/Purpose: Hypocomplementemia is a common phenomenon in systemic lupus erythematosus (SLE) and antiphospholipid antibody syndrome (APS). Robust mechanistic data implicate complement activation in antiphospholipid antibody…
Abstract Number: 282 • 2016 ACR/ARHP Annual Meeting
From ‘immune Mediated Necrotizing Myopathy’ to ‘antibody-Mediated Necrotizing Myositis: Towards the Pathogenic Role of Anti-SRP and Anti-Hmgcr Antibodies’
Yves Allenbach¹, Louiza Arouche-Delaperche², Corinna Preusse³, Gillian Butler Browne², Nicolas Champtiaux⁴, Kuberaka Mariampillai⁵, Aude Rigolet⁶, Peter Hufnagl⁷, Norman Zerbe⁸, Thierry Maisonobe⁹, Damien Amelin², Sarah Leonard-louis¹⁰, Charles Duyckaerts¹¹, Bruno Eymard¹², Hans-Hilmar Goebel³, Laurent Drouot¹³, Olivier Boyer¹⁴, Olivier Benveniste^2,5 and Werner Stenzel³, ¹Pitié-Salpêtrière University Hospital, AP-HP, Department of Internal Medicine and Clinical Immunology, Paris, France, Paris, France, ²Sorbonne Universités UPMC Univ Paris 06, Myology research center, INSERM UMRS974, CNRS FRE3617, Pitié-Salpêtrière University Hospital, Paris, France, Paris, France, ³Charité - Universitätsmedizin, Department of Neuropathology, Berlin, Germany, Berlin, Germany, ⁴Department de Internal Medicine and Clinical Immunology, Hôpital Pitié-Salpêtrière, AP-PH, UPMC, Paris, France, ⁵Assistance Publique - Hôpitaux de Paris, Pitié-Salpêtrière University Hospital, Department of Internal Medicine and Clinical Immunology, Hospital University Department: inflammation, immunopathology and biotherapy (DHU i2B), Paris, France, Paris, France, ⁶Internal Medicine, Pitié-Salpêtrière University Hospital, Paris, France, ⁷Pathology departmen, Charite Hospital, Berlin, Germany, ⁸Department of Pathology, Charite Hospital, Berlin, Germany, ⁹Pitié-Salpêtrière University Hospital, AP-HP, Department of Neuropathology, Paris, France, Paris, France, ¹⁰Assistance Publique - Hôpitaux de Paris, Pitié-Salpêtrière University Hospital, Department of Neuropathology, Paris, France, Paris, France, ¹¹Neuropathology, Pitie-Salpetriere Hospital, Paris, France, ¹²Department of Neurology, Hôpital Pitié-Salpêtrière, AP-PH, UPMC, Paris, France, ¹³Immunology, INSERM U905, University of Rouen, Rouen, France, ¹⁴Immunology, Inserm 905 & Institute for Biomedical Research, University of Rouen, Rouen, France
Background/Purpose: Immune mediated necrotizing myopathy (IMNM) has been recently added as a new entity among dermatomyositis, polymyositis and sporadic inclusion body myositis. IMNM is defined…
Abstract Number: 463 • 2016 ACR/ARHP Annual Meeting
Deficiency of Transmembrane Protein VISTA (V-domain Immunoglobulin Suppressor of T-cell Activation) Ameliorates Murine Collagen-II Antibody-Induced Arthritis
Roy Fava^1,2, Sabrina Ceeraz³, Susan Eszterhas⁴, Petra Sergent³, Christopher Burns⁵ and Mathew Vincenti^6,7, ¹Research, Department of Veterans Affairs, White River Junction, VT, ²Department of Medicinee, Geisel School of Medicine at Dartmouth, Lebanon, NH, ³Microbiology/Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, ⁴Research, Department of Veterans Affairs, white River Junction, VT, ⁵Section of Rheumatology, Geisel School of Medicine at Dartmouth, Lebanon, NH, ⁶Department of Veterans Affairs, White River Junction, VT, ⁷Department of Medicine, Geisel School of Medicine at Dartmouth, Lebanon, NH
Background/Purpose: The transmembrane protein VISTA, is a member of the B7/CD28 family of immune modulator proteins and can function as a negative immune checkpoint regulator…
Abstract Number: 751 • 2016 ACR/ARHP Annual Meeting
Complement C4d Split Products on Erythrocytes Are Associated with Composite Measure of Disease Activity in Systemic Lupus Erythematosus Subjects Receiving Methotrexate and Hydroxychloroquine
Michelle Petri¹, Ying Qu², John Conklin³, Kelley Brady⁴, Robert Apilado⁵ and Thierry Dervieux⁶, ¹Rheumatology Division, Johns Hopkins University School of Medicine, Baltimore, MD, ²Exagen Diagnostics, Vista, CA, ³1261 Liberty Way Suite C, Exagen Diagnostics, Vista, CA, ⁴R&D, Exagen Diagnostics, Vista, CA, United Kingdom, ⁵Exagen Diagnostics, vista, CA, United Kingdom, ⁶Research and Development, Exagen Diagnostics, Vista, CA
Background/Purpose: We evaluated the relationships between disease activity measures and C4d split products on erythrocytes (EC4d) in SLE subjects from a subset of the Hopkins…
Abstract Number: 198 • 2015 ACR/ARHP Annual Meeting
CL-L1 and CL-K1 Complement Associated Pattern Recognition Molecules in Systemic Lupus Erythematosus
Anne Troldborg¹, Steffen Thiel², Lisbeth Jensen³, Magdalena Janina Laska², Søren Hansen⁴, Bent Deleuran^5,6, Jens Christian Jensenius² and Kristian Stengaard-Pedersen⁵, ¹clinical medicine, Aarhus University, Aarhus, Denmark, ²Biomedicine, Aarhus University, Aarhus, Denmark, ³Biomedicin, Aarhus University, Aarhus, Denmark, ⁴Department of cancer and inflammation research, University of Southern Denmark, Odense, Denmark, ⁵Rheumatology, Aarhus University Hospital, Aarhus, Denmark, ⁶Biomedicin, Aarhus University, 8000, Denmark
Background/Purpose: The complement system is one of the key players in the pathogenesis of systemic lupus erythematosus (SLE). Collectin liver 1 (CL-L1) and collectin kidney…
Abstract Number: 519 • 2015 ACR/ARHP Annual Meeting
In Indigenous North Americans at High Risk for RA Complement C5 Level Is Associated with ACPA Positivity and C5a with Transition to Synovitis Even after Correcting for in Vitro Complement Activation Found with Prolonged Sample Storage
Ceri Richards¹, Carol Hitchon², Xiaobo Meng³, Irene Smolik⁴, David Robinson⁴ and Hani S. El-Gabalawy⁴, ¹Internal Medicine, University of Manitoba, Winnipeg, MB, Canada, ²Department of Rheumatology, University of Manitoba, Winnipeg, MB, Canada, ³University of Manitoba, Winnipeg, MB, Canada, ⁴Arthritis Center, University of Manitoba, Winnipeg, MB, Canada
Background/Purpose: Complement activation, a key component of innate immunity and activator of adaptive immunity has been linked to RA pathogenesis. Anti-citrullinated peptide antibody (ACPA) and…
Abstract Number: 772 • 2015 ACR/ARHP Annual Meeting
Post-Phlebotomy Stability of Soluble and Cellular Forms of Complement Activation: Implications in SLE Diagnostic Assays
John Conklin¹, Basil Jones², Tyler O'Malley³, Duncan Poling⁴, JoAnne Ligayon⁵, Leilani Wolover⁶, Ying Qu⁷, Claudia Ibarra⁸, Puja Chitkara⁹ and Thierry Dervieux³, ¹1261 Liberty Way Suite C, Exagen Diagnostics, Vista, CA, ²Exagen Diagnostics, Vista, CA, ³Research and Development, Exagen Diagnostics, Vista, CA, ⁴Research and Development, Exagen Diagnostics Inc., Vista, CA, ⁵Flow Cytometry, Exagen Diagnostics Inc., Vista, CA, ⁶Research and Development, Exagen Diagnostics, Inc., Vista, CA, ⁷Exagen Diagnostic Inc, Vista, CA, ⁸Clinical Laboratory, Exagen Diagnostics, Vista, CA, ⁹Rheumatology, Center For Arthritis and Rheumatologic Excellence, Chula Vista, CA
Background/Purpose: Deregulation and activation of the classical complement system is known to be associated with systemic lupus erythematosus (SLE). As such, several investigators have proposed…
Abstract Number: 819 • 2015 ACR/ARHP Annual Meeting
Upregulation of Complement C3 and Alpha-2-Macroglobulin in Cerebrospinal Fluid of Neuropsychiatric Systemic Lupus Erythematosus
Tomoyuki Asano¹, Shuzo Sato¹, Hiroko Kobayashi¹, Yoshinobu Kariya², Hiromi Ito², Kyoka Hoshi², Akioh Yoshihara³, Yoshikazu Ugawa³, Minoru Takahashi⁴, Hideharu Sekine⁴, Shunsei Hirohata⁵, Hiroshi Watanabe¹, Hiromasa Ohira¹ and Yasuhiro Hashimoto², ¹Gastroenterology and Rheumatology, Fukushima Medical University School of Medicine, Fukushima, Japan, ²Biochemistry, Fukushima Medical University School of Medicine, Fukushima, Japan, ³Neurology, Fukushima Medical University School of Medicine, Fukushima, Japan, ⁴Immunology, Fukushima Medical University School of Medicine, Fukushima, Japan, ⁵Rheumatology and Infectious Diseases, Kitasato University School of Medicine, Kanagawa, Japan
Background/Purpose: Various autoantibodies have been identified in cerebrospinal fluids (CSF) of neuropsychiatric systemic lupus erythematosus (NPSLE). They are supposed to form immune complex with complement…
Abstract Number: 1996 • 2015 ACR/ARHP Annual Meeting
Complement Activation Predicts Adverse Pregnancy Outcome in Patients with SLE and/or aPL Antibodies
Jane E. Salmon^1,2, Mimi Kim³, Marta Guerra⁴, Elianna Kaplowitz¹, Carl Laskin⁵, Michelle Petri⁶, Ware D. Branch^7,8, Michael Lockshin⁹, Lisa R. Sammaritano², Joan T. Merrill¹⁰, Mary D. Stephenson¹¹, Munther Khamashta¹², Alan M. Peaceman¹³, Anne Lynch¹⁴ and Jill P. Buyon¹⁵, ¹Hospital for Special Surgery, New York, NY, ²Rheumatology, Hospital for Special Surgery, New York, NY, ³Biostatistics and Research Design Resource, Albert Einstein Coll Med, Bronx, NY, ⁴Rheumatology 3rd Fl Rsrch, Hospital for Special Surgery, New York, NY, ⁵Medicine, Rheumatology and Obstetrics and Gynecology, University of Toronto and LifeQuest Centre for Reproductive Medicine, Toronto, ON, Canada, ⁶Johns Hopkins University School of Medicine, Baltimore, MD, ⁷University of Utah, Salt Lake City, UT, ⁸Intermountain Healthcare, Salt Lake City, UT, ⁹Barbara Volcker Center for Women & Rheumatic Disease, Hospital for Special Surgery, New York, NY, ¹⁰Clinical Pharmacology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ¹¹University of Illinois College of Medicine, Chicago, IL, ¹²Graham Hughes Lupus Research Laboratory, The Rayne Institute, St Thomas' Hospital, London, United Kingdom, ¹³Northwestern University Feinberg School of Medicine, Chicago, IL, ¹⁴Colorado School of Public Health, Aurora, CO, ¹⁵NYU School of Medicine, New York, NY
Background/Purpose: Women with SLE and/or aPL antibodies (SLE/APL) are at increased risk for adverse pregnancy outcomes (APO) yet identification of those destined for complications remains…
Abstract Number: 2043 • 2015 ACR/ARHP Annual Meeting
Cell-Bound Complement Activation Products Have High Sensitivity and Specificity in Childhood-Onset Systemic Lupus Erythematosus and Juvenile Idiopathic Arthritis
Anca Askanase¹, Joyce Hui-Yuen², John Conklin³, Derren Barken⁴, Tyler O'Malley⁵, Xiao Qing Li⁶, Liza Mariel Bermudez², Andrew Eichenfield⁷, Amy J. Starr⁸, Lisa F. Imundo^9,10 and Thierry Dervieux¹¹, ¹Columbia University College of Physicians & Surgeons, New York, NY, ²Pediatric Rheumatology, Columbia University Medical Center, New York, NY, ³1261 Liberty Way Suite C, Exagen Diagnostics, Vista, CA, ⁴Exagen Diagnostics, Inc., Vista, CA, ⁵Research and Development, Exagen Diagnostics, Vista, CA, ⁶Adult Rheumatology, Columbia University Medical Center, New York, NY, ⁷Morgan Stanley Children's Hospital of NY-Presbyterian, Columbia University, New York, NY, ⁸Columbia University Medical Center, New York, NY, ⁹Assoociate Professor of Pediatrics in Medicine - Rheumatology, Columbia University Medical Center, New York, NY, ¹⁰New York Presbyterian Hospitsl, Columbia University, New York, NY, ¹¹Research and Development, Exagen Diagnostics, Inc., Vista, CA
Background/Purpose: Elevated levels of cell-bound complement activation products (C4d deposition on erythrocytes [EC4d] and B lymphocytes [BC4d], CBCAPS) have been demonstrated to be sensitive and…
Abstract Number: 2120 • 2015 ACR/ARHP Annual Meeting
Alterations in Complement C3 and iC3b in SLE Pregnancies
Marta M. Guerra¹, Martin Schmidt², Elianna Kaplowitz³, Vibeke Strand⁴ and Jane E. Salmon⁵, ¹Rheumatology 3rd Fl Rsrch, Hospital for Special Surgery, New York, NY, ²Kypha, Inc., St. Louis, MO, ³Hospital for Special Surgery, New York, NY, ⁴Division of Immunology/Rheumatology, Stanford University School of Medicine, Portola Valley, CA, ⁵Division of Rheumatology, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY
Background/Purpose: Pregnancy in patients with SLE is associated with increased risk of maternal and fetal complications. Studies in experimental models and humans suggest that complement…
Abstract Number: 2180 • 2015 ACR/ARHP Annual Meeting
Primary Antiphospholipid Syndrome Patients Display Increased Levels of Cell-Bound C4d in Comparison to SLE and Healthy Donors
Maria Gerosa^1,2, Paola Adele Lonati³, Tania Ubiali¹, Martina Cornalba¹, Maria Orietta Borghi^1,4 and Pier Luigi Meroni^1,2,5, ¹Department of Clinical Sciences and Community Health, Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy, ²Division of Rheumatology, Division of Rheumatology, Istituto Ortopedico Gaetano Pini, Milan, Italy, ³Laboratory of Immuno-rheumatology, Laboratory of Immuno-rheumatology, IRCCS Istituto Auxologico Italiano, Cusano Milanino, Jamaica, ⁴Laboratory of Immuno-rheumatology, IRCCS Istituto Auxologico Italiano, Milan, Italy, ⁵Laboratory of Immuno-rheumatology, Laboratory of Immuno-rheumatology, IRCCS Istituto Auxologico Italiano, Cusano Milanino, Italy
Background/Purpose: Systemic Lupus Erythematosus (SLE) patients display high levels of the cell-bound complement activation factor C4d deposits on erythrocytes, B lymphocytes and platelets. In particular,…
Abstract Number: 2171 • 2014 ACR/ARHP Annual Meeting
Polymorphisms in theÂ FCN1Â Gene Coding for M-Ficolin Are Associated with Disease Activity, Radiographic Damage and Are the Strongest Predictors of DAS28 Remission in 180 DMARD naÃ¯ve Early Rheumatoid Arthritis Patients
Christian G. Ammitzbøll¹, Rudi Steffensen², Steffen Thiel³, Jens Christian Jensenius³, Kim Horslev-Petersen⁴, Torkell Ellingsen^5,6, Merete Lund Hetland⁷, Peter Junker⁸, Mikkel Ostergaard⁹ and Kristian Stengaard-Pedersen¹⁰, ¹Arhus University Hospital, Aarhus, Denmark, ²Department of Clinical Immunology, Aalborg University Hospital, Aalborg, Denmark, ³Biomedicine, Aarhus University, Aarhus, Denmark, ⁴Rheumatology, Research Unit at King Christian X Hospital for Rheumatic Diseases, Graasten, Graasten, Denmark, ⁵Reumatology, Odense University Hospital, Odense, Denmark, ⁶Diagnostic Center, Regional Hospital Silkeborg, Silkeborg, Denmark, ⁷DANBIO, Department of Rheumatology, Copenhagen University Hospital at Glostrup, Copenhagen, Denmark, ⁸Department of Rheumatology, Odense University Hospital, Odense, Denmark, ⁹Dept of Rheumatology RM, Copenhagen University Hospital, Glostrup, Denmark, ¹⁰Rheumatology, Arhus University Hospital, Aarhus, Denmark
Background/Purpose: M-ficolin is a pattern recognition molecule that collaborates with associated serine proteases as an activator of the complement system. High M-ficolin levels are strongly…
Abstract Number: 1924 • 2014 ACR/ARHP Annual Meeting
Cell Bound Complement Activation Products Have Higher Sensitivity Than Serum C3 and C4 Levels in Systemic Lupus Erythematosus
Rosalind Ramsey-Goldman¹, Richard Furie², Chaim Putterman³, Anka Askanase⁴, Jill P. Buyon⁵, Kenneth Kalunian⁶, W. Winn Chatham⁷, E Massarotti⁸, Kyriakos A. Kirou⁹, A. Weinstein¹⁰, Puja Chitkara¹¹, Susan Manzi¹², Joe Ahearn¹³, Leilani Wolover¹⁴, John Conklin¹⁵, Tyler O'Malley¹⁴, Claudia Ibarra¹⁵, Derren Barken¹⁶ and Thierry Dervieux¹⁷, ¹FSM-300, Northwestern University, Chicago, IL, ²Division of Rheumatology, North Shore-LIJ Health System, Great Neck, NY, ³The Division of Rheumatology, Albert Einstein College of Medicine, Bronx, NY, ⁴Department of Medicine Rhemuatology, Colombia University, New York, NY, ⁵Department of Medicine, Division of Rheumatology, New York University School of Medicine, New York, NY, ⁶UCSD School of Medicine, La Jolla, CA, ⁷University of Alabama at Birmingham, Birmingham, AL, ⁸Brigham and Women's Hospital, Boston, MA, ⁹Hospital for Special Surgery, New York, NY, ¹⁰Washington Hospital Center, Washington, DC, ¹¹Internal Medicine, Sharp Memorial Hospital, San Diego, CA, ¹²Division of Rheumatology, University of Pittsburgh School of Medicine, Pittsburgh, PA, ¹³Internal Medicine, West Penn Allegheny Health System, Pittsburgh, PA, ¹⁴Research and Development, Exagen Diagnostics, Inc., Vista, CA, ¹⁵1261 Liberty Way Suite C, Exagen Diagnostics, Inc., Vista, CA, ¹⁶Exagen Diagnostics, Inc., Vista, CA, ¹⁷rd, Exagen Diagnostics, Inc., Vista, CA
Background/Purpose: Elevated levels of cell bound complement activation products (CBCAPS) have been established as valuable biomarkers in the diagnosis of Systemic Lupus Erythematosus (SLE). In…
Abstract Number: 1649 • 2014 ACR/ARHP Annual Meeting
High Specificity of Skin Immunoglobulin Deposits for diagnosing SLE in Patients with Lupus Nephritis
Marco Ulises Martinez-Martinez¹, Maria Daniela De Avila², Mario Perales³, Lourdes Baranda⁴, Susana Román Acosta⁵, Jaime Antonio Borjas García⁵ and Carlos Abud-Mendoza¹, ¹Unidad de Investigaciones Reumatológicas, Hospital Central & Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico, ²Regional Unit Rheumatology and Osteoporosis, Hospital Central y Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico, ³Regional Unit of Rheumatology and Osteoporosis, Hospital Central y Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico, ⁴Regional Unit of Rheumatology and Osteoposis, Hospital Central y Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico, ⁵Nephrology Department, Hospital Central y Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
Background/Purpose: Deposit of different classes of immunoglobulins is the main feature of lupus nephritis;1 because of its high specificity, a patient is classified as having…

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