Abstracts Archive - Page 553 of 2425 - ACR Meeting Abstracts

Abstract Number: 0004 • ACR Convergence 2021
Unappreciated Systemic Metabolic Functions of the Canonical B Cell Cytokines, BAFF and APRIL: Regulation of Lipolysis and Non-shivering Thermogenesis and Protection from Obesogenic Diet Induced Weight Gain
Isaac Harley¹, Calvin Chan², Paul Pfluger³, Trompette Aurelien⁴, Traci Stankiewicz⁵, Jessica Allen⁵, Maria Moreno-Fernandez⁵, Michelle Damen⁵, Jarren Oates⁵, Pablo Alarcon⁵, Jessica Doll⁶, Matthew Flick⁷, Leah Flick⁸, Juan Sanchez-Gurmaches⁹, Rajib Mukherjee⁹, Rebekah Karns¹⁰, Michael Helmrath¹¹, Thomas Inge¹², Stuart Weisberg¹³, Sunje Pamp¹⁴, David Relman¹⁵, Randy Seeley¹⁶, Matthias Tschoep¹⁷, Chris Karp¹⁸ and Senad Divanovic⁸, ¹University of Colorado Anschutz Medical Campus, Aurora, CO, ²University of Cincinnati, Cincinnati, OH, ³Technical University of Munich, Munich, Germany, ⁴Le Centre hospitalier universitaire vaudois, Lausanne, Switzerland, ⁵Cincinnati Children's Hospital Medical Center, Division of Immunobiology, Cincinnati, OH, ⁶Cincinnati Children's Hospital Medical Center, Division of Immunobiology, Cincinn, OH, ⁷Division of Experimental Hematology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, ⁸Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ⁹Division of Endocrinology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, ¹⁰Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, ¹¹Pediatric General and Thoracic Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, ¹²Department of Surgery, Children’s Hospital Colorado, Aurora, CO, ¹³Columbia University Medical Center, New York, NY, USA, New York, NY, ¹⁴Danmarks Tekniske Universitet, Lyngby, Denmark, ¹⁵Department: Medicine - Med/Infectious Diseases - Stanford University, Stanford, ¹⁶Department of Surgery, Internal Medicine and Nutritional Sciences, University of Michigan, Ann Arbor, MI, ¹⁷Division of Metabolic Diseases, Technische Universität München, Munich, Germany, ¹⁸Division of Molecular Immunology, Cincinnati Children’s Hospital Medical Center, Cincinnati
Background/Purpose: The impact of immune mediators on weight homeostasis and systemic metabolism remains underdefined. Interrogation of resistance to diet-induced obesity in mice lacking a negative…
Abstract Number: 0009 • ACR Convergence 2021
Humoral Immune Responses to SARS-CoV2 Infections and upon Vaccination Against SARS-CoV2
STEPHANIE FINZEL¹, Nicole Peter², Chiara Brand², Beate Fischer², Bärbel Keller², Sebastian Weigang³, Georg Kochs³, Martin Schwemmle³, Siegbert Rieg⁴, Philipp Mathé⁴, Winfried Kern⁴, Lia van der Hoek⁵, Kathrin de la Rosa⁶, Hans-Martin Jäck⁷, Klaus Warnatz², Reinhard Voll⁸ and Hermann Eibel², ¹University Clinic of Freiburg, Department of Rheumatology and Clinical Immunology, Freiburg, Germany, ²Department of Rheumatology and Clinical Immunology, Medical Faculty, University of Freiburg and Center for Chronic Immunodeficiency, Medical Center, University of Freiburg, Freiburg, Germany, ³Institute of Virology, University of Freiburg, Freiburg, Germany, ⁴Department of Infectiology, Medical Faculty, University of Freiburg, Freiburg, Germany, ⁵Laboratory of Experimental Virology, Department of Medical Microbiology, Center for Infection and Immunity Amsterdam (CINIMA), Academic Medical Center of the University of Amsterdam, Amsterdam, Netherlands, ⁶Max-Delbrück-Centrum für Molekulare Medizin (MDC), Berlin, Germany, ⁷Department of Medicine 3. Division of Immunology, Friedrich-Alexander-University Erlangen, Erlangen, Germany, ⁸Department of Rheumatology and Clinical Immunology, University Medical Center, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, Freiburg, Germany
Background/Purpose: We compared humoral immune responses against SARS-CoV-2 to responses against spike-antigen after vaccination.Methods: 800 health-care workers from University Medical Center Freiburg, Germany, were pursued…
Abstract Number: 0008 • ACR Convergence 2021
Jo-1-Binding and Clonally-Expanded Memory B Cells Express Germline and Somatically-Mutated B Cell Receptors in Anti-tRNA Synthetase Syndrome Patients
Erin Wilfong, Alberto Cisneros, Jennifer Young-Glazer, Scott Smith, Leslie Crofford and Rachel Bonami, Vanderbilt University Medical Center, Nashville, TN
Background/Purpose: Anti-tRNA synthetase syndrome (ARS) is a severe systemic autoimmune disease associated with myositis, interstitial lung disease, rash, and arthritis. ARS is associated with autoantibodies…
Abstract Number: 0011 • ACR Convergence 2021
Differential Inflammation-mediated Function of Prokineticin 2 in the Synovial Fibroblasts of Patients with Rheumatoid Arthritis Compared to Osteoarthritis
Kentaro Noda, Bianca Dufner and Rainer Straub, Laboratory of Experimental Rheumatology and Neuroendocrine Immunology, Department of Internal Medicine I, University Hospital Regensburg, Regensburg, Germany
Background/Purpose: Prokineticin 2 (PK2) is a secreted protein involved in several pathological and physiological processes, including the regulation of inflammation, sickness behaviors, and the circadian…
Abstract Number: 0014 • ACR Convergence 2021
Low Baseline Expression of Pyruvate Kinase and Succinate Dehydrogenase Genes in the Peripheral Blood of Rheumatoid Arthritis Patients Treated with Tofacitinib Is Associated with Clinical Remission at the End of Follow-up
Elena Tchetina¹, Azamat Satybaldyev², Galina Markova¹ and Alexander Lila², ¹Nasonova Research Institute of Rheumatology, Moscow, Russia, ²V.A. Nasonova Reseach Institute of Rheumatology, Moscow, Russia
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease of unknown etiology, which is characterized by erosive arthritis and systemic inflammation. Tofacitinib (TFCN) is a Janus…
Abstract Number: 0013 • ACR Convergence 2021
Cyclin Dependent Kinase 4 and 6 Determine the Cytokine Responsiveness by Stabilizing JUN in Rheumatoid Arthritis Synovial Fibroblasts
Tadashi Hosoya¹, Tetsuya Saito², Hiroyuki Baba², Nao Tanaka², Seiji Noda², Yoji Komiya², Yasuhiro tagawa², Akio Yamamoto² and Shinsuke Yasuda², ¹Tokyo Medical and Dental University(TMDU), Tokyo, Japan, ²Tokyo Medical and Dental University (TMDU), Tokyo, Japan
Background/Purpose: Although current inflammation-targeted therapy improved the outcome of patients with rheumatoid arthritis (RA), the achievement of complete disease remission was still challenging. Since synovial…
Abstract Number: 0012 • ACR Convergence 2021
A Novel Mechanism Linking Mucosal Bacteria with Autoantibody Responses in RA: Acetylated Bacterial Lysate as a Model Antigen
Mikhail Volkov, Arieke Kampstra, Karin van Schie, Joanneke Kwekkeboom, Tom WJ Huizinga, René Toes and Diane van der Woude, Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Rheumatoid arthritis (RA) is characterized by autoantibodies against post-translationally modified proteins (AMPA) such as citrullinated, carbamylated and acetylated proteins. Importantly, these antibodies are highly…
Abstract Number: 0007 • ACR Convergence 2021
Divergent Reactivities of Rheumatoid Factors and Anti-Modified Protein Antibodies Converge on IgG Epitopes
Aisha Mergaert¹, Zihao Zheng¹, Michael Denny¹, Maya Amjadi¹, Janna Bashar¹, Michael Newton¹, Vivianne Malmström², Caroline Grönwall², Sara McCoy¹ and Miriam Shelef¹, ¹University of Wisconsin, Madison, WI, ²Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
Background/Purpose: Rheumatoid arthritis (RA) patients often develop rheumatoid factors (RFs), antibodies that bind IgG Fc, and anti-modified protein antibodies (AMPAs), multi-reactive autoantibodies that commonly bind…
Abstract Number: 0018 • ACR Convergence 2021
Caspase-8 Variant G Regulates Rheumatoid Arthritis Fibroblast-Like Synoviocyte Aggressive Behavior
Cecilia Ansalone¹, Gyrid Nygaard¹, Richard Ainsworth¹, Rizi Ai¹, Deepa Hammaker¹, Narayanan Perumal², Ken Weichert², Frances Tung², Lalitha Kodandapani², Michael Sauder², Elisabeth Mertsching², Robert Benschop³, Wei Wang¹, David Boyle¹ and Gary Firestein¹, ¹University of California San Diego, San Diego, CA, ²Eli Lilly and Company, San Diego, CA, ³Eli Lilly and Company, Indianapolis, IN
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) display an aggressive phenotype, including abnormal migration and invasion. Using data from our previous studies defining the epigenetic…
Abstract Number: 0017 • ACR Convergence 2021
Lessons Learnt from Associations Between Anti-modified Protein Antibodies and Risk Factors: Human Leukocyte Antigen – Shared Epitope Alleles Solely Associate with Anti-citrullinated Protein Antibodies
Tineke J van wesemael, Annemarie L. Dorjee, Tom WJ Huizinga, Annette H.M van der Helm-van Mil, René Toes and Diane van der Woude, Leiden University Medical Center, Leiden, Netherlands
Background/Purpose: Rheumatoid arthritis (RA) is characterized by the presence of auto-antibodies to post translationally modified proteins (anti-modified protein antibodies (AMPA)): anti-citrullinated protein antibodies (ACPA), anti-carbamylated…
Abstract Number: 0015 • ACR Convergence 2021
Rheumatoid Factor Recognizes Specific Domains of IgG Heavy Chain Complexed with HLA Class II Molecules
Shanshan Zhang¹, Hideaki Tsuji¹, Hui Jin², Koji Kitagori¹, Shuji Akizuki³, Kosaku Murakami¹, Ran Nakashima¹, Hajime Yoshifuji¹, Masao Tanaka¹, Hisashi Arase², Koichiro Ohmura⁴ and Akio Morinobu¹, ¹Kyoto University, Kyoto, Japan, ²Osaka University, Osaka, Japan, ³Kyoto Universtiy, Kyoto City, Japan, ⁴Kobe City Medical Center General Hospital, Kobe, Japan
Background/Purpose: Rheumatoid factor (RF) is an autoantibody that binds to IgG Fc region (CH2 and CH3 domains) and is detectable in patients with rheumatoid arthritis…
Abstract Number: 0019 • ACR Convergence 2021
Increased Circulating CD39+FoxP3+CD4+ Treg Cells in Early Rheumatoid Arthritis Facilitate the Antiinflammatory Action of Methotrexate
Laura Nuño¹, Alejandro Villalba¹, Marta Novella-Navarro², Irene Monjo¹, Diana Peitado¹, Sara Garcia-Carazo¹, Alejandro Balsa² and Maria-Eugenia Miranda-Carus¹, ¹Hospital La Paz - IdiPAZ, Madrid, Spain, ²Immuno-Rheumatology Research Group, Hospital La Paz Institute for Health Research-IdiPAZ, Rheumatology, La Paz University Hospital, Madrid, Spain
Background/Purpose: Inhibition of AICAR transformylase by MTX results in augmented release of adenine nucleotides to the extracellular space; these are rapidly hydrolysed by ectonucleotidases CD39…
Abstract Number: 0021 • ACR Convergence 2021
Unique Alterations in Circulating T Peripheral Helper Cells Are Found in Different Ethnic Groups of ACPA+ Individuals Both At-risk for and with Classified RA
Hideto Takada¹, Yuko Okamoto², Yasuhiro Katsumata³, Jennifer Seifert⁴, Kristen Demoruelle⁵, Jill Norris⁶, Kevin Deane⁷, Masayoshi Harigai³ and V. Michael Holers⁸, ¹Tokyo Women's Medical University School of Medicine, Shinjuku-ku, Japan, ²Tokyo Women's Medical University Division of Rheumatology, 10-22 Kawada-cho, Shinjyuku-ku, Tokyo, Japan, ³Tokyo Women's Medical University School of Medicine, Tokyo, Japan, ⁴University of Colorado School of Medicine, Littleton, CO, ⁵University of Colorado Anschutz Medical Campus, Aurora, CO, ⁶Colorado School of Public Health, Aurora, CO, ⁷University of Colorado Denver, Denver, CO, ⁸University of Colorado, Denver, CO
Background/Purpose: Production of autoantibodies following pathogenic T and B cell interactions precede the development of RA. T follicular helper (Tfh) cells and T peripheral helper…
Abstract Number: 0020 • ACR Convergence 2021
Citrullination Drives the Expression of Pro-fibrotic Genes in Rheumatoid Arthritis Fibroblast-like Cells
Peter Maloley, Evan Ryan, Nozima Aripova, Michael Duryee, Bryant England, Ted Mikuls and Geoffrey Thiele, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: The pathophysiology of rheumatoid arthritis (RA) is hallmarked by joint inflammation, thickening of the pannus, and resultant joint destruction. Within the synovial tissue, citrullinated…
Abstract Number: 0016 • ACR Convergence 2021
Structural and Functional Neurobiological Alterations of Salience and Sensorimotor Networks in Juvenile Idiopathic Arthritis
Hanne van der Heijden¹, Jordan Lemme², Mariesa Cay², Diana Sibai², Benjamin Goodlett³, Jeffrey Lo⁴, Peter Nigrovic⁵, Margaret Chang⁴, Esra Meidan⁴, Olha Halyabar⁴, Melissa Hazen⁶, Maria Taylor⁴, Kacie Hoyt⁴, Camilo Jaimes⁷, Lauren Henderson³, Kirsten Ecklund⁷, Rudy Schreiber⁸, Robert Sundel⁴ and Jaymin Upadhyay⁹, ¹Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA USA/ Faculty of Psychology and Neuroscience, Section Neuropsychology & Psychopharmacology Maastricht University, Maastricht, The Netherlands/ Faculty of Science, Biomedical Sciences Neurobiology, University of Amsterdam, Amsterdam, The Netherlands, Sittard, Netherlands, ²Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA USA, Boston, MA, ³Division of Genetics and Genomics, Boston Children’s Hospital, Harvard Medical School, Boston, MA, ⁴Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, ⁵Boston Children's Hospital, Brookline, MA, ⁶Boston Children's Hospital, Boston, MA, ⁷Department of Radiology, Boston Children’s Hospital, Harvard Medical School, Boston, ⁸Faculty of Psychology and Neuroscience, Section Neuropsychology & Psychopharmacology Maastricht University, Maastricht, The Netherlands., Maastricht, Netherlands, ⁹Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA USA/ Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA USA, Boston, MA
Background/Purpose: Juvenile Idiopathic Arthritis (JIA) is a common childhood illness, characterized by inflammation of the joint, chronic pain and decreased physical functioning. To date, the…

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