Abstracts tagged "neutrophils"

Abstract Number: 0384 • ACR Convergence 2021
A Tough Cell: The Argument for a Biomarker of Clinical and Imaging Outcomes in Spondyloarthritis: The Neutrophil Lymphocyte Ratio and the Platelet Lymphocyte Ratio
Rouhin Sen¹, Emmeline Kim², Elizabeth Cheng³, Kavya Ganuthula⁴, Meika Fang⁵, Gail Kerr⁶, Jessica Walsh⁷, Elizabeth Chang⁸, Siba Raychaudhuri⁹, Andreas Reimold¹⁰ and Liron Caplan¹¹, ¹University of Colorado School of Medicine/Rocky Mountain Regional Veterans Affairs Medical Center (VAMC), Denver, CO, ²University of Colorado School of Medicine, Aurora, CO, ³Rocky Mountain Regional VAMC, Aurora, CO, ⁴Rocky Mountain Regional VAMC/University of Colorado School of Medicine, Aurora, CO, ⁵David Geffen School of Medicine at UCLA/West Los Angeles Veterans Affairs Medical Center (VAMC), Los Angeles, CA, ⁶Washington D.C., Veterans Affairs Medical Center (VAMC)/Georgetown and Howard Universities, Washington, DC, ⁷Salt Lake City Veteran Affairs Medical Center (VAMC)/University of Utah Hospital, Salt Lake City, UT, ⁸Phoenix Veterans Affairs Medical Center (VAMC), Phoenix, AZ, ⁹Sacramento Veterans Affairs Medical Center (VAMC)/University of California-Davis Health, Davis, CA, ¹⁰University of Texas – Southwestern Medical Center/Dallas Veterans Affairs Medical Center (VAMC), Dallas, TX, ¹¹Rocky Mountain Regional Veterans Affairs Medical Center (VAMC)/University of Colorado School of Medicine, Aurora, CO
Background/Purpose: Biomarkers of disease activity/severity and imaging outcomes in axial spondyloarthritis (axSpA) remain a challenge. The most common relevant biomarker is the C-Reactive Protein (CRP),…
Abstract Number: 0520 • ACR Convergence 2021
Leukocyte Immunoglobulin-like Receptor A3 Facilitates Neutrophil Extracellular Trap Formation in TLR7-induced Lupus Mice
Hongjiang Liu¹, Yundi Tang¹, Chen Chen² and Jianping Guo², ¹Peking University People's Hospital, Beijing, China (People's Republic), ²Peking University People’s Hospital, Beijing, China (People's Republic)
Background/Purpose: Leukocyte immunoglobulin-like receptor A3 (LILRA3) is a secreted protein belongs to LILR family. Our research group previously reported that the functional LILRA3 is a…
Abstract Number: 0535 • ACR Convergence 2021
Therapeutic Efficacy of a Biomimetic ALXR Agonist in Murine Systemic Lupus Erythematosus (SLE)
Priyal Dave¹, Tiange Dong¹, Andrew Mead¹, Isaac Asante¹, Brandon Ebright¹, Eugene Zhou¹, RIta Li¹, Nicos Petasis¹, William Stohl² and Stan Louie¹, ¹University of Southern California, Los Angeles, CA, ²University of Southern California Keck School of Medicine, Los Angeles, CA
Background/Purpose: Neutrophils are key initiators and promoters of autoimmunity, including SLE, via the elaboration of neutrophil extracellular traps (NETs). We tested the efficacy of the…
Abstract Number: 0494 • ACR Convergence 2020
Genetic-epigenetic Interaction and the Relationship Between DNA Methylation Patterns and Disease Activity in a Longitudinal Cohort of Lupus Patients
Patrick Coit¹, Lourdes Ortiz-Fernandez², Emily Lewis³, W. Joseph McCune³, Kathleen Maksimowicz-McKinnon⁴ and Amr Sawalha², ¹University of Pittsburgh and University of Michigan, Pittsburgh, PA, ²University of Pittsburgh, Pittsburgh, PA, ³University of Michigan, Ann Arbor, MI, ⁴Henry Ford Hospital, Detroit
Background/Purpose: Genetic factors and epigenetic dysregulation are implicated in the pathogenesis of lupus. We performed a longitudinal analysis of DNA methylation in lupus patients for…
Abstract Number: 0740 • ACR Convergence 2020
Card9 Promotes Th17-mediated Arthritis and Spondylitis via Control of Acute Pathogenic Neutrophil Responses in SKG Mice
Holly Rosenzweig¹, Emily Vance¹, Ellen Lee¹ and Ruth Napier¹, ¹Oregon Health & Science University and VA Portland Health Care System, Portland, OR
Background/Purpose: Caspase recruitment domain-containing protein 9 (CARD9) is an intracellular signal transduction molecule that mediates antimicrobial responses following activation of C-type lectin receptors (ie. Dectin-1) by…
Abstract Number: 0752 • ACR Convergence 2020
Serum Proteomics Implicates Neutrophil Degranulation in Rheumatoid Arthritis Disease Activity
Liam O'Neil¹, Vidyanand Anaparti¹, Dana Wiens¹, Irene Smolik¹, Xiaobo Meng¹ and Hani El-Gabalawy¹, ¹University of Manitoba, Winnipeg, MB, Canada
Background/Purpose: Though targeted therapeutics have improved outcomes in Rheumatoid Arthritis (RA) treatment, the understanding of the underlying biological mechanisms that mediate inflammatory arthritis in RA…
Abstract Number: 0777 • ACR Convergence 2020
CLEC12A Expression as a Potential Predictor of Disease Activity in Early Rheumatoid Arthritis
Myriam Vaillancourt¹, Philippe Desaulniers¹, Guillaume Paré¹, Nathalie Pagé¹, Asmaa Lachaab¹, Anthony Kerever¹, Anne-Sophie Julien¹, Nathalie Amiable¹, Martin Pelletier¹, Philippe Tessier¹, Louis Bessette², Paul Fortin³, Laetitia Michou¹ and Maria Fernandes¹, ¹Université Laval, Québec, QC, Canada, ²Laval University, Quebec, Canada, ³CHU de Quebec - Universite Laval, Quebec, Canada
Background/Purpose: Rheumatoid arthritis (RA) develops as a result of the dysregulation of immune activating and inhibitory pathways. Several lines of evidence indicate that inhibitory receptors…
Abstract Number: 0792 • ACR Convergence 2020
LY294002 Improves the Collagen-induced Arthritis by Inducing Neutrophil Apoptosis
Xuechan Huang¹, Tianwang Li¹, Shuyang Chen¹, Zhixiang Huang¹ and Junming Chen¹, ¹Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, Guangdong, China (People's Republic)
Background/Purpose: Neutrophils play a central role in host defense, but they also play important effectors on acute and chronic inflammation. Neutrophil apoptosis is essential for…
Abstract Number: 0845 • ACR Convergence 2020
Hematopoietic Specific Deficiency of Rho Kinase Attenuates Neutrophil NETosis and UVB-induced Skin Inflammation
Minghui Li¹, Xing Lyu¹, Yubin Li², James Liao³, Victoria Werth⁴ and Ming-Lin Liu¹, ¹University of Pennsylvania, philadelphia, ²University of Pennsylvania and the Michael J. Crescenz VA Medical Center, Philadelphia, PA, ³University of Chicago, Chicago, ⁴University of Pennsylvania and Corporal Michael J. Crescenz Veterans Administration Hospital, Philadelphia
Background/Purpose: Neutrophils are the most abundant leukocytes and the first to be recruited to the site of photodamage after ultraviolet B (UVB) exposure. We have…
Abstract Number: 0901 • ACR Convergence 2020
Proinflammatory Neutrophil Function Is Modulated During Secukinumab Therapy in Psoriatic Arthritis Without Compromising Host Defence
Robert Moots¹, Andy Cross², Helen Wright², Steven Edwards², Nicola Goodson³, Jenny Hawkes³, Ayren Mediana¹ and Helen Frankland¹, ¹Liverpool University Hospitals, Liverpool, United Kingdom, ²University of Liverpool, Liverpool, United Kingdom, ³University of Liverpool, Liverpool
Background/Purpose: Secukinumab is a monoclonal antibody that neutralises IL-17A, which plays a key role in the IL-23/17A axis underlying the pathophysiology of psoriatic arthritis (PsA). …
Abstract Number: 0945 • ACR Convergence 2020
Neutrophils Mediate Kidney Inflammation Following Acute Skin Exposure to UV Light
Sladjana Skopelja-Gardner¹, Joyce Tai², Xizhang Sun², Lena Tanaka², James Kuchenbecker², Tomas Mustelin¹ and Keith Elkon², ¹University of Washington, Seattle, WA, ²University of Washington, Seattle
Background/Purpose: Sensitivity to ultraviolet (UV) light affects up to 80% of SLE patients and can exacerbate systemic disease flares, including lupus nephritis (LN). Our findings…
Abstract Number: 0948 • ACR Convergence 2020
Mass Cytometry Reveals Activation Heterogeneity of Circulating Neutrophils in Systemic Lupus Erythematosus
Ricardo Grieshaber-Bouyer¹, Joshua Keegan², Peter Nigrovic³, James Lederer⁴ and Deepak Rao², ¹Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Heidelberg, Germany, ²Brigham and Women's Hospital, Boston, MA, ³Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, Boston, ⁴BWH Harvard Medical School, Boston, MA
Background/Purpose: Neutrophils are important effector cells in systemic immune-mediated diseases. Neutrophil phenotypes vary depending on their age, maturity, activation state, and local environment; however, differences…
Abstract Number: 0064 • ACR Convergence 2020
Neutrophil Extracellular Traps Are Sufficient to Activate the Alternative Pathway of Complement
Rebecca Schriefer¹, Michelle Elvington², Priyan Weerappuli³ and Alfred Kim⁴, ¹Washington University School of Medicine, Saint Louis, MO, ²Kypha, Inc., Saint Louis, MO, ³University of Michigan, Ann Arbor, MI, ⁴Washington University School of Medicine, St. Louis, MO
Background/Purpose: Systemic lupus erythematosus (SLE) replies on complement activation to drive many of the pathophysiologic features of disease. We and others have noted that SLE…
Abstract Number: 1518 • ACR Convergence 2020
The Role for Neutrophils in the Early Phases of Enthesitis in Spondyloarthritis
Zheni Stavre¹, Charles Bridgewood², Qiao Zhou², Yukiko Maeda³, Jozsef Karman⁴, Dennis McGonagle⁵ and Ellen Gravallese⁶, ¹University of Massachusetts Medical School-Rheumatology Division, Worcester, MA, ²University of Leeds, Leeds, United Kingdom, ³University of Massachusetts Medical School, worcester, MA, ⁴Abbvie Inc., Worcester, MA, ⁵The University of Leeds, Leeds Institute for Rheumatic and Musculoskeletal Medicine, NIHR Leeds Biomedical Research Centre, Leeds Teaching Hospitals Trust, Leeds, UK, Leeds, United Kingdom, ⁶Brigham and Women's Hospital, Boston, MA
Background/Purpose: Neutrophils are present in the early phases of spondyloarthritis (SpA)-associated uveitis, skin and intestinal disease, but their role in enthesitis remains unknown. We investigated…
Abstract Number: 0069 • ACR Convergence 2020
Identification of CD13 as a Potential Cause for SARS-CoV-2-triggered Hyperinflammation and Thrombosis
Eliza Pei-Suen Tsou¹, Gautam Sule¹, Mikel Gurrea Rubio², M. Asif Amin¹, Yu Zuo¹, Jason Knight¹, Yogendra Kanthi³ and David Fox¹, ¹Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²Division of Rheumatology, University of Michigan, Canton, MI, ³Division of Cardiovascular Medicine, Ann Arbor
Background/Purpose: The ectopeptidase CD13, which is highly expressed on stromal and myeloid cells in joints, lung and other tissues, is a known receptor for many…

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