Abstract Number: 2560 • 2016 ACR/ARHP Annual Meeting
Sputum Antibody to Malondialdehyde-Acetaldehyde Adduct in Subjects with Established Rheumatoid Arthritis
Background/Purpose: Anti-malondialdehyde-acetaldehyde adduct (MAA) antibodies target immunogenic products of oxidative stress, are detected in higher concentration in paired synovial fluid vs serum in RA, and…Abstract Number: 488 • 2016 ACR/ARHP Annual Meeting
Exploring the Association Between Air Pollutant Exposure and Seropositivity in Rheumatoid Arthritis
Background/Purpose: The etiology of rheumatoid arthritis (RA) is multi-factorial, with expression of HLA-DRB1 shared epitope (SE), smoking and socioeconomic status (SES) exerting influence. Prior studies…Abstract Number: 2562 • 2016 ACR/ARHP Annual Meeting
Human Seroreactivity to Gut Microbiota Antigens in Rheumatoid Arthritis and Controls-Lack of Association with Rheumatoid Arthritis Autoantibodies
Background/Purpose: The human gut microbiome maintains normal immune homeostasis. Changes to the microbiota evolve with aging and have been implicated in the development of autoimmune…Abstract Number: 568 • 2016 ACR/ARHP Annual Meeting
Triggering Receptor Expressed on Myeloid Cells (TREM) As a Novel Indicator of Disease Progression in ‘at-Risk’ Individuals
Background/Purpose: Whilst the exact aetiology of rheumatoid arthritis (RA) remains unclear, current concepts suggest an environmental link with possible microbial triggers. Studying individuals at-risk of…Abstract Number: 2578 • 2016 ACR/ARHP Annual Meeting
Plasma Levels of Bone Morphogenetic Protein (BMP) Subgroups and Their Inhibitors (noggin, sclerostin) in Rheumatoid Arthritis Patients and Correlation with Disease Activity, Clinical and Radiographic Progression
Background/Purpose: Progressive bone destruction occurs in rheumatoid arthritis (RA) due to imbalance of osteoblast/osteoclast activity. Bone morphogenetic proteins (BMPs) regenerate bone damage by stimulating the…Abstract Number: 570 • 2016 ACR/ARHP Annual Meeting
A Molecular Timeline for Preclinical RA Pathogenesis Defined By Dysregulated PTPN22, Hypercitrullination, and Aberrant Cytokine/Metabolic Profiles in PBMC of at-Risk Individuals
Background/Purpose: One unique feature of RA is the presence of ACPA. PTPN22 is a phosphatase that also acts to suppress citrullination independently of its phosphatase…Abstract Number: 2928 • 2016 ACR/ARHP Annual Meeting
Hypomethylation of an Intragenic Alternative Promoter Contributes to Impaired Treg Function in Rheumatoid Arthritis By Transcriptional Interference with Expression of the Treg-Specific Protein, Glycoprotein a Repetitions Predominant (GARP)
Background/Purpose: The expression of Treg specific genes, such as the master transcription factor of Tregs, FoxP3 or the Treg specific surface molecule, glycoprotein A repetitions…Abstract Number: 581 • 2016 ACR/ARHP Annual Meeting
Cell-Mediated Neutrophil Lysis-a Mechanism Promoting Hypercitrullination in Rheumatoid Arthritis?
BACKGROUND/PURPOSE:Protein citrullination, the post-translational conversion of arginine to citrulline, mediated by peptidylarginine deiminase (PAD) enzymes, is considered a likely mechanism for the stimulation of anti-citrullinated…Abstract Number: 3017 • 2016 ACR/ARHP Annual Meeting
Elevated Neutrophil Extracellular Trap Levels Correlate with Anti-CCP3-IgG and Anti-CCP3-IgA Levels in the Sputum of Individuals at-Risk for Future Rheumatoid Arthritis
Background/Purpose: The initial site of anti-citrullinated protein antibody (ACPA) generation in RA has been proposed to be a mucosal site. We have previously demonstrated ACPA…Abstract Number: 584 • 2016 ACR/ARHP Annual Meeting
Glycoprotein VI: A Potential Target for ACPA-Mediated Platelet Activation?
Background/Purpose: Arterial thrombosis is a major cause of mortality in rheumatoid arthritis (RA),especially in anti-citrullinated protein antibody (ACPA)-positive patients Recent studies suggest that platelet activation…Abstract Number: 3019 • 2016 ACR/ARHP Annual Meeting
Sputum Antibodies to Individual Citrullinated Protein/Peptide Antigens Are Elevated in Subjects at-Risk of Future RA and Subjects with Established Disease
Background/Purpose: Multiple studies demonstrate that ACPAs are elevated in the serum years prior to the onset of seropositive RA during a preclinical period of autoimmunity.…Abstract Number: 988 • 2016 ACR/ARHP Annual Meeting
Risk of Rheumatoid Arthritis after Transfusion of Blood from Donors Later Diagnosed with Rheumatoid Arthritis: A Retrospective Cohort Study
Background/Purpose: Rheumatoid Arthritis (RA) is a disease that can have a long sub-clinical phase. During this phase the person with pre-RA could have factors in…Abstract Number: 3022 • 2016 ACR/ARHP Annual Meeting
Autoantibodies to Peptidylarginine Deiminase 2 Protect Against Radiographic Progression in Patients with Rheumatoid Arthritis
Background/Purpose: The mechanisms that drive clinical heterogeneity and outcomes in patients with rheumatoid arthritis (RA) are poorly understood, but precise biomarkers may identify clinically unique…Abstract Number: 1040 • 2016 ACR/ARHP Annual Meeting
Stressful Life Events : A Trigger for Rheumatoid Arthritis Onset within a Year. a Case-Control Study
Background/Purpose: To assess the association between recent stressful life events and rheumatoid arthritis (RA) onset. Methods: We conducted a monocentric case-control study of in and…Abstract Number: 3217 • 2016 ACR/ARHP Annual Meeting
Broad-Based Interrogation of the Serum Proteome Suggests That RA Onset Is Associated with Activation of the Intrinsic Coagulation Cascade
Background/Purpose: The establishment of longitudinal pre-clinical RA cohorts is beginning to provide important insights into the mechanisms that precede the onset of clinically detectable disease.…
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