Rheumatoid arthritis (RA) is preceded by an at-risk stage of disease that can be marked by the presence of anticitrullinated protein antibodies (ACPAs) but the absence of clinically apparent synovitis (clinical RA). Preemptive intervention in at-risk individuals could prevent or delay future tissue damage; however, the immunobiology of this stage is unclear. Using integrative multiomics,… Continue reading Progression to #rheumatoid arthritis in at-risk individuals is defined by systemic #inflammation and by T and B cell dysregulation
Category: Rheumatology
Dynamics of the gut #microbiome in individuals at risk of #rheumatoid arthritis: a cross-sectional and longitudinal observational study
Objectives This work aimed to resolve the conflicting reports on Prevotellaceae abundance in the development of rheumatoid arthritis (RA) and to observe structural, functional and temporal changes in the gut microbiome in RA progressors versus non-progressors.Methods Individuals at risk of RA were defined by the presence of anticyclic citrullinated protein (anti-CCP) antibodies and new musculoskeletal… Continue reading Dynamics of the gut #microbiome in individuals at risk of #rheumatoid arthritis: a cross-sectional and longitudinal observational study
Skewed epithelial cell differentiation and premature aging of the thymus in the absence of vitamin #D signaling
Central tolerance of thymocytes to self-antigen depends on the medullary thymic epithelial cell (mTEC) transcription factor autoimmune regulator (Aire), which drives tissue-restricted antigen (TRA) gene expression. Vitamin D signaling regulates Aire and TRA expression in mTECs, providing a basis for links between vitamin D deficiency and autoimmunity. We find that mice lacking Cyp27b1, which cannot… Continue reading Skewed epithelial cell differentiation and premature aging of the thymus in the absence of vitamin #D signaling
#Caffeine improves systemic #lupus erythematosus endothelial dysfunction by promoting endothelial progenitor cells survival
We studied the role of caffeine intake on endothelial function in SLE by assessing its effect on circulating endothelial progenitor cells (EPCs) both ex vivo in SLE patients and in vitro in healthy donors (HD) treated with SLE sera.MethodsWe enrolled SLE patients without traditional cardiovascular risks factors. Caffeine intake was evaluated with a 7-day food… Continue reading #Caffeine improves systemic #lupus erythematosus endothelial dysfunction by promoting endothelial progenitor cells survival
#Neuropsychiatric prodromes and symptom timings in relation to disease onset and/or flares in #SLE: results from the mixed methods international INSPIRE study
BackgroundNeuropsychiatric symptoms in SLE and other systemic autoimmune rheumatic diseases (SARDs) are challenging to diagnose, attribute and manage. We investigated the timings of onset of a broad range of neuropsychiatric (NP) symptoms in relation to timing of SLE onset. In addition, we explored whether NP symptoms may be a prodrome to SARD onset and to… Continue reading #Neuropsychiatric prodromes and symptom timings in relation to disease onset and/or flares in #SLE: results from the mixed methods international INSPIRE study
#Gout risk in adults with pre-#diabetes initiating metformin
Objective Despite the strong association between gout and pre-diabetes, the role of metformin in gout among individuals with pre-diabetes remains uncertain. We compared the incidence rates of gout in adults with pre-diabetes starting metformin with those not using antidiabetic treatments.Methods We conducted a new-user, propensity score-matched cohort study using electronic health records from an academic health system… Continue reading #Gout risk in adults with pre-#diabetes initiating metformin
Association between #sinusitis and incident #rheumatic diseases: a population-based study
To determine whether antecedent sinusitis is associated with incident rheumatic disease.Methods This population-based case–control study included all individuals meeting classification criteria for rheumatic diseases between 1995 and 2014. We matched three controls to each case on age, sex and length of prior electronic health record history. The primary exposure was presence of sinusitis, ascertained by diagnosis… Continue reading Association between #sinusitis and incident #rheumatic diseases: a population-based study
Vitamin #D and Marine n-3 #Fatty Acids for #Autoimmune Disease Prevention: Outcomes at Two Years after VITAL Trial Completion
ObjectiveIn the 5.3 year randomized, 2 x 2 factorial, double-blind, placebo-controlled VITamin D and OmegA-3 TriaL (VITAL), vitamin D supplementationreduced autoimmune disease (AD) incidence (hazard ratio [HR] 0.78, 95% confidence interval 0.61-0.99). Omega-3(n-3) fatty acid supplementation showed a statistically non-significant reduction (HR 0.85, 0.67-1.08). We aimed to confirm further AD cases arising during and after randomization and… Continue reading Vitamin #D and Marine n-3 #Fatty Acids for #Autoimmune Disease Prevention: Outcomes at Two Years after VITAL Trial Completion
#Ginger intake suppresses neutrophil extracellular trap formation in #autoimmune mice and healthy humans
We previously reported that treatment of mice with 6-gingerol, the most abundant phytochemical in ginger root, leads to phosphodiesterase inhibition that counteracts neutrophil hyperactivity in models of antiphospholipid syndrome (APS) and lupus. Here, we explored the extent to which oral intake of a whole-ginger extract would similarly impact neutrophils in both autoimmune mice and healthy… Continue reading #Ginger intake suppresses neutrophil extracellular trap formation in #autoimmune mice and healthy humans
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