Abstracts tagged "neutrophils"

Abstract Number: 0115 • ACR Convergence 2025
Dysfunctional Mitophagy Propels Neutrophil Hyperactivity and Thrombosis in Antiphospholipid Syndrome
Ajay Tambralli¹, Emily Becker², Kaitlyn Sabb³, NaveenKumar Somanathapura¹, Srilakshmi Yalavarthi¹, Cyrus Sarosh⁴, Jacqueline Madison¹, Yu (Ray) Zuo¹ and Jason S. Knight¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Ann Arbor, ³University of Michigan - Ann Arbor, Ann Arbor, MI, ⁴University of Michigan, Temperance, MI
Background/Purpose: Neutrophil hyperactivity and neutrophil extracellular trap (NET) release (NETosis) contribute to antiphospholipid syndrome (APS) pathogenesis. We recently discovered that APS patient neutrophils have more…
Abstract Number: 1208 • ACR Convergence 2025
Neutrophil Activation in Juvenile Dermatomyositis: Associations with Muscle Function and Disease Progression
Jia Shi¹, Yang Wu², Aviya Levy³, Ting Wang⁴, Abhinav Janappareddi⁵, Payton Hermanson¹, Jorge A. Gonzalez-Chapa⁵, Qian Wang⁶, Susan Shenoi⁷ and Christian Lood⁵, ¹University of Washington, Seattle, WA, ²¹. Chinese Academy of Medical Sciences & Peking Union Medical College; ². Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Beijing, China; ³. University of Washington, Division of Rheumatology, Seattle, WA, USA, Beijing, China (People's Republic), ³Rady Children's Hospital, San Diego, CA, ⁴Division of Rheumatology, Seattle Children's Hospital and Research Center, Seattle, ⁵University of Washington, Division of Rheumatology, Seattle, ⁶Peking Union Medical College Hospital, Beijing, Beijing, China (People's Republic), ⁷Seattle Children's Hospital and Research Center, Mercer Island, WA
Background/Purpose: Juvenile dermatomyositis (JDM) is an inflammatory vasculopathy characterized by muscle weakness and systemic inflammation. This study aimed to investigate the clinical utility of neutrophil…
Abstract Number: 0134 • ACR Convergence 2025
Neutrophil Gasdermin D Pores as Potential Therapeutic Targets in APS-Associated Thromboinflammation
NaveenKumar Somanathapura¹, Thalia Newman¹, Chao Liu², Srilakshmi Yalavarthi³, Cyrus Sarosh⁴, Jacqueline Madison¹, Ajay Tambralli¹, Yu (Ray) Zuo¹ and Jason S. Knight¹, ¹University of Michigan, Ann arbor, MI, ²University of Michigan, Superior Charter Twp, MI, ³Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, ⁴University of Michigan, Temperance, MI
Background/Purpose: Emerging evidence implicates neutrophil activation and neutrophil extracellular trap (NET) formation (i.e., NETosis) in amplifying APS-associated thromboinflammation. Gasdermin D (GSDMD), a substrate of inflammatory…
Abstract Number: 1490 • ACR Convergence 2025
Vitamin D Deficiency and Its Relationship with Inflammatory Biomarkers in SLE: A Focus on Neutrophil-to-Lymphocyte Ratio
judith hernández-Sánchez¹, Beatriz Tejera Segura², Luis Bausá Gimeno¹, Doryan García Olivas¹, Patricia González Terrats¹, MA Acosta Mérida¹, Diana Botello Corzo¹, Daniel Batista perdomo¹, Sergio Machin González¹, F Javier Nóvoa Medina¹ and Jose Angel Hernandez³, ¹Rheumatology Department. Hospital Universitario Insular de Gran Canaria, Las palmas, Spain, ²Hospital Insular de Gran Canaria, Las palmas, Spain, ³Hospital Universitario Insular de Gran Canaria, Las Palmas de Gran CanariaHospital, Spain
Background/Purpose: Systemic lupus erythematosus (SLE) is a chronic autoimmune disease that can affect multiple organs. Vitamin D levels have been associated with disease activity in…
Abstract Number: 0287 • ACR Convergence 2025
Comprehensive Profiling of Neutrophil Subsets Reveals Functional Signatures Linked to Vasculopathic Features in Patients with Inflammatory Myopathies
Daniel Alberto Carrillo-Vázquez¹, Beatriz Alcalá-Carmona¹, Jennifer Tiaré Balderas Miranda², Yatzil Reyna Juárez³, María José Ostos Prado¹, Samuel Govea-Peláez¹, Nancy R Mejía Domínguez⁴, Guillermo Juárez Vega⁴, Karina Santana-De Anda¹, Jiram Torres-Ruiz⁵ and Diana Gómez-Martín⁶, ¹Instituto Nacional De Ciencias Médicas Y Nutrición Salvador Zubirán, Mexico City, Distrito Federal, Mexico, ²Universidad Nacional Autónoma de México, Coyoacán, Federal District, Mexico, ³Instituto Politècnico Nacional, Tultitlán de Mariano Escobedo, Mexico State, Mexico, ⁴Universidad Nacional Autónoma de México, Mexico City, Distrito Federal, Mexico, ⁵INCMNSZ, Ciudad de México, Mexico, ⁶INCMNSZ, Mexico city, Federal District, Mexico
Background/Purpose: Vasculopathic manifestations of idiopathic inflammatory myopathies (IIM) such as interstitial lung disease (ILD), calcinosis, skin ulcers, mechanic’s hands, are characterized by immune-mediated vascular damage.…
Abstract Number: 1619 • ACR Convergence 2025
Systemic Immune-Inflammation Index Is Superior to Neutrophil-to-Lymphocyte Ratio for Assessing Disease Activity in Polymyalgia Rheumatica and Giant Cell Arteritis
Gaston Ariel Ghio¹, Maria Gabriela Paz Machado², Evelin Encalada², Imma Perez Nadales², Georgina Salvador Alarcón², Elena Riera Alonso², manel pujol², Marta Pujol Teixidor² and Silvia Martinez Pardo², ¹Hospital Universitari Mùtua Terrassa, Terrassa, Catalonia, Spain, ²Hospital Universitari Mùtua Terrassa, Terrassa, Spain
Background/Purpose: Polymyalgia rheumatica (PMR) and giant cell arteritis (GCA) are chronic inflammatory disorders predominantly affecting patients over 50. Despite unclear etiopathogenesis, both conditions share central…
Abstract Number: 0046 • ACR Convergence 2024
Impaired Neutrophil Extracellular Trap (NET) Degradation in Rheumatoid Arthritis (RA) and Pre-clinical RA Is Mediated by Anti-NET Antibodies
Jeba Atkia Maisha¹, Alina Sememenko², Jun Kim², Mario Navarrete², XIAOBO MENG¹, Hani El-Gabalawy¹ and Liam O'Neil¹, ¹University of Manitoba, Winnipeg, MB, Canada, ²University of Manitoba, Winnipeg, Canada
Background/Purpose: Rheumatoid Arthritis (RA) begins after a prolonged preclinical phase which is marked by the development of RA antibodies, typically against citrullinated proteins (ACPA). The…
Abstract Number: 1268 • ACR Convergence 2024
Neutrophil Lymphocyte Ratio as a Novel Marker of Skin Disease Activity in Older Children with Juvenile Dermatomyositis
Shreya Swaminathan¹, Nidhi Naik², Susan Shenoi³, Sarah Vandenbergen⁴, Jessica Turnier⁵, Zilan Zheng⁶, Jessica Neely⁶, James Andrews⁷ and Christian Lood⁸, ¹University of Washington, Seattle, ²Seattle children's hospital, Bothell, WA, ³Seattle Children's Hospital and Research Center, Mercer Island, WA, WA, ⁴University of Michigan, Ann Arbor, MI, ⁵University of Michigan, Saline, MI, ⁶UCSF, San Francisco, CA, ⁷University of Alabama at Birmingham, Birmingham, AL, ⁸University of Washington, Seattle, WA
Background/Purpose: Exaggerated neutrophil activation can lead to inflammation and organ damage in rheumatic diseases, including dermatomyositis (DM). In both juvenile (JDM) and adult DM, markers…
Abstract Number: 0063 • ACR Convergence 2024
Splicing into Action:Investigating the Role of Alternative Splicing in Rheumatoid Arthritis Neutrophils
Rayan Najjar¹, Noga Rogel² and Tomas Mustelin³, ¹University of Washington, Seattle, ²University of Washinton, Seattle, ³University of Washington, Seattle, WA
Background/Purpose: Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by a variable response to therapies, reflecting its complex and incompletely understood pathogenesis. Emerging research suggests…
Abstract Number: 1550 • ACR Convergence 2024
CD19 CAR T Cell Therapy Suppresses the Inflammatory Profile of Neutrophils in Systemic Lupus Erythematosus
Panagiotis Garantziotis¹, Kirill Anoshkin¹, Melanie Hagen², Andreas Wirsching², Andreas MAckensen³, Georg Schett⁴ and Ricardo Grieshaber-Bouyer⁵, ¹Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ²Department of Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ³Department of Medicine 5 - Hematology and Oncology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) and Uniklinikum Erlangen, Erlangen, Bayern, Germany, ⁴Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, ⁵Department of Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany
Background/Purpose: Patients with Systemic Lupus Erythematosus (SLE) exhibit increased formation of Neutrophil Extracellular Traps and production of proinflammatory cytokines, which can perpetuate autoimmunity. Furthermore, NETs…
Abstract Number: 0065 • ACR Convergence 2024
Evidence of Membranolytic Targeting and Intracellular Citrullinationin Neutrophils Isolated from Patients with Rheumatoid Arthritis
Neela Fatemeh Moadab¹, Tal Gazitt², Rayan Najjar¹, Ethan Le¹, J Lee Nelson³, Vijay Joshua⁴, Keith Elkon¹, Caroline Grönwall⁴ and Tomas Mustelin¹, ¹University of Washington, Seattle, WA, ²Carmel Hospital, Haifa, Israel, ³University of Washington and Fred Hutchinson Cancer Center, Seattle, WA, ⁴Karolinska Institutet, Stockholm, Sweden
Background/Purpose: Anti-citrullinated protein autoantibodies (ACPA) are diagnostic for rheumatoid arthritis (RA). The antigens recognized by these autoantibodies are produced by protein arginine deiminases (PADs), particularly…
Abstract Number: 1577 • ACR Convergence 2024
Elevated Neutrophil Extracellular Traps in Systemic Sclerosis-associated Vasculopathy and Suppression by a Synthetic Prostacyclin Analog
Neda Kortam¹, Wenying Liang¹, Claire Shiple¹, Suiyuan Huang¹, Rosemary Gedert¹, James St. Clair¹, Cyrus Sarosh², Caroline Foster¹, Eliza Pei-Suen Tsou¹, John Varga¹, Jason Knight¹, Dinesh Khanna¹ and Ramadan Ali¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Temperance, MI
Background/Purpose: Neutrophils and neutrophil extracellular traps (NETs) contribute to the vascular complications of multiple diseases, but their role in systemic sclerosis (SSc) is understudied. We…
Abstract Number: 0081 • ACR Convergence 2024
The Axial Spondyloarthritis Risk Variant CARD9 S12N Enhances Neutrophil-mediated Th Responses
Hillary Struthers¹, Kofi Asare-Konadu², Emily Vance¹ and Ruth Napier³, ¹Oregon Health & Science University, Portland, OR, ²Department of Molecular Microbiology and Immunology, Oregon Health & Science University, Portland, OR, ³Department of Molecular Microbiology and Immunology and Division of Arthritis and Rheumatic Disease, Oregon Health & Science University, VA Portland Health Care System, Portland, OR
Background/Purpose: Axial spondyloarthritis (axSpA) is a type of inflammatory arthritis that primarily affects the entheses of the spine and/or sacroiliac joints. The cause of axSpA…
Abstract Number: 1581 • ACR Convergence 2024
Neutrophil-to- lymphocyte Ratio: A Possible Biomarker for Clinical Response After Autologous Hematopoietic Stem Cell Transplantation
shiri keret¹, Lisa Kaly², Georg Schett³, Christina Bergmann⁴, Joerg Henes⁵, Gleb Slobodin² and Doron Rimar², ¹Rheumatology unit, Bnai-Zion medical center and the faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel., Atlit, Israel, ²Rheumatology unit, Bnai-Zion medical center and the faculty of Medicine, Technion - Israel Institute of Technology, Haifa, Israel., Haifa, Israel, ³Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, ⁴Department Internal Medicine III, Friedrich-Alexander-University (FAU) Erlangen-Nurnber, Frankfurt, Germany, ⁵University Hospital Tuebingen, Tuebingen, Germany
Background/Purpose: Baseline high Neutrophil- to- lymphocyte ratio (NLR) (higher than 2.95) is associated with severe progressive skin and lung disease and with reduced 5-year survival…
Abstract Number: 0099 • ACR Convergence 2024
Modulating Pentose Phosphate Pathway Metabolism to Temper Neutrophil Hyperactivity in Antiphospholipid Syndrome
Kaitlyn Sabb¹, Ajay Tambralli¹, Megan Radyk¹, Emily Becker¹, Srilakshmi Yalavarthi¹, Claire Hoy¹, Cyrus Sarosh², Jacqueline Madison¹, Yu Zuo¹, Costas Lyssiotis¹ and Jason Knight¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan, Temperance, MI
Background/Purpose: Neutrophil hyperactivity and neutrophil extracellular trap (NET) release (NETosis) appear to play important roles in antiphospholipid syndrome (APS) pathogenesis. To kill microbes and propel…

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