Abstract Number: 2598 • 2015 ACR/ARHP Annual Meeting
Neutrophil Extracellular Trap Levels Measured By Cell Free Nucleosome ELISA in Serum Are Highly Specific and Sensitive for Rheumatoid Arthritis
Background/Purpose: Rheumatoid factor (RF) or anti-citrullinated peptide antibody (ACPA) detection have limited clinical utility for the diagnosis of rheumatoid arthritis (RA), as the specificity and…Abstract Number: 2709 • 2015 ACR/ARHP Annual Meeting
Immediate Release of Peripheral Neutrophil Myeloperoxidase and Elastase and Formation of Extracellular Traps to Cigarette Smoking in Rheumatoid Arthritis
Background/Purpose: Smoking represents an independent risk factor for rheumatoid arthritis (RA) (1). In response to infectious agents, neutrophil granulocytes can extrude their nuclear contents as…Abstract Number: 3032 • 2015 ACR/ARHP Annual Meeting
Role of Adenosine and Neutrophils in Inflammation Associated with Mutations in CECR1 Gene
Background/Purpose: The phenotype of patients afflicted by deficiency of adenosine deaminase 2 (DADA2) due to mutations in CECR1encoding ADA2 protein shares many features with idiopathic…Abstract Number: 205 • 2015 ACR/ARHP Annual Meeting
Mode of Action of Therapeutic Anti-Citrullinated Protein Antibodies Revealed: Inflammation Reduction Due to Inhibition of Netosis
Background/Purpose: Neutrophils together with aberrant Neutrophil Extracellular Trap (NET) formation contribute to the induction and propagation of inflammation. A growing number of studies indicate that…Abstract Number: 208 • 2015 ACR/ARHP Annual Meeting
Neutrophil-Mediated Mechanisms of Drug-Induced Autoimmunity
Background/Purpose: Certain medications are known to induce autoimmune disease in humans, triggering clinical features and autoantibody profiles that mirror idiopathic systemic lupus erythematosus (SLE) and/or…Abstract Number: 209 • 2015 ACR/ARHP Annual Meeting
Different Autoimmune Rheumatic Diease IgG Have Differential Effects upon Neutrophil Binding, Activation and Neutrophil Extracellular Trap Formation
Background/Purpose: Dysregulation of neutrophil activation and function is important in the pathogenesis of various inflammatory and autoimmune rheumatic diseases (ARDs). Neutrophil dysfunction is well recognised…Abstract Number: 933 • 2015 ACR/ARHP Annual Meeting
DEK-Targeting DNA Aptamers As Novel Therapeutics for Inflammatory Arthritis
Background/Purpose: Aptamers are short single stranded DNA or RNA oligonucleotides that are specifically selected to bind and neutralize a wide range of biomedically relevant proteins.…Abstract Number: 2867 • 2014 ACR/ARHP Annual Meeting
Antiphospholipid Antibodies Promote the Release of Neutrophil Extracellular Traps: a New Mechanism of Thrombosis in the Antiphospholipid Syndrome
Background/Purpose: Antiphospholipid antibodies (aPL), especially those targeting beta-2-glycoprotein I, are known to activate endothelial cells, monocytes, and platelets, with prothrombotic implications. However, the interaction of…Abstract Number: 2183 • 2014 ACR/ARHP Annual Meeting
Release of Enzymatically Active Peptidyl Arginine Deiminases (PADs) By Neutrophils Allows Generation of Citrullinated Extracellular Autoantigens in the Synovial Fluid of Patients with Rheumatoid Arthritis
Background/Purpose Citrullinated proteins are important autoantigens in the inflamed joints of patients with rheumatoid arthritis (RA). Several of these proteins are derived from proteins generally…Abstract Number: 1862 • 2014 ACR/ARHP Annual Meeting
The Association of Low-Density Granulocytes with Disease Activity and Response to Treatment in ANCA-Associated Vasculitis
Background/Purpose: To discover new pathways involved in the pathophysiology of ANCA-associated vasculitis (AAV) and identify potential clinical biomarkers through use of whole-genome gene expression profiling.…Abstract Number: 1814 • 2014 ACR/ARHP Annual Meeting
RNA-Containing Immune Complexes Shift Human Neutrophils from Phagocytosing Cells to Efficient Releasers of Oxidized DNA in a Process Requiring Crosstalk Between Toll-like Receptors and Fc Gamma Receptor IIa
Background/Purpose Neutrophil extracellular traps (NETs), the extrusion of chromatin to capture microbes, has recently emerged as a possible mechanism that may increase the autoantigenic burden…Abstract Number: 1208 • 2014 ACR/ARHP Annual Meeting
Cholesterol Loading Induces Neutrophil Extracellular Traps, and Atorvastatin Attenuates This Effect
Background/Purpose Neutrophils are the most common white blood cell, but their role in autoimmune and cardiovascular diseases has been underestimated. As part of host defense,…Abstract Number: 1201 • 2014 ACR/ARHP Annual Meeting
Hypoxia Modulates Peptidyl Arginine Deiminase 4 Activity and Neutrophil Extracellular Trap Formation
Background/Purpose RA is an autoimmune rheumatic disease characterised by ACPA, endothelial dysfunction, platelet activation, synovial hyperplasia and hypoxia in affected joints. ACPA recognise citrullinated proteins,…Abstract Number: 641 • 2014 ACR/ARHP Annual Meeting
Peptidylarginine Deiminase Inhibition Mitigates NET Formation and Protects Against Kidney, Skin, and Vascular Disease in Lupus-Prone MRL/Lpr Mice
Background/Purpose: An imbalance between neutrophil extracellular trap (NET) production and NET degradation has been observed in systemic lupus erythematosus (SLE), potentially contributing to autoantigen externalization,…Abstract Number: 2426 • 2013 ACR/ARHP Annual Meeting
Signaling Abnormalities In Neutrophil Granulocytes Of Rheumatoid Arthritis Patients Are Associated With Increased Extracellular Trap Formation and Provide a Basis For The Induction Of Anti-Citrullinated Peptide Antibodies
Background/Purpose: Rheumatoid arthritis (RA) is often associated with anti-citrullinated peptide antibodies (ACPAs) in the serum. While ACPAs have been associated with increased inflammation, joint destruction…