Complement and its environmental determinants in the progression of human rheumatoid arthritis

Publication date: August 2019Source: Molecular Immunology, Volume 112Author(s): Elizabeth A. Bemis, Jill M. Norris, Jennifer Seifert, Ashley Frazer-Abel, Yuko Okamoto, Marie L. Feser, M. Kristen Demoruelle, Kevin D. Deane, Nirmal K. Banda, V. Michael HolersAbstractRheumatoid arthritis (RA) is a complex autoimmune disease with an etiology that is not yet well understood, disproportionally affects women and also varies in incidence and prevalence by population. The presence of anti-citrullinated protein antibodies (ACPA) is a highly specific biomarker for the diagnosis of clinically apparent RA. ACPA are also present in the serum for an average of 3–5 years prior to the onset of RA during an asymptomatic period characterized by mucosal inflammation and local ACPA production at these sites. We hypothesized that systemic complement activation products might be generated during the pre-clinical initiation of RA and/or provide a second hit that promotes subsequent arthritis development in the joints. In addition, we evaluated which demographic and genetic features and environmental exposures could influence the complement activation process. We analyzed plasma from healthy subjects, subjects at-risk for the development of RA based on serum ACPA positivity in absence of inflammatory arthritis (IA), and ACPA positive RA subjects by Multiplex Assay and ELISA for eighteen complement system components, factors and activation products belonging to the classical, lectin and alternat...
Source: Molecular Immunology - Category: Allergy & Immunology Source Type: research

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Purpose of review Purpose of this review is to describe the most recent human studies on neutrophils in type 1 diabetes (T1D) and to focus on the key questions that still need to be addressed. Recent findings Recent evidences demonstrate that neutrophils have marked abnormalities in phenotype and function and play a central role in initiation and perpetuation of aberrant immune responses and organ damage in various systemic autoimmune diseases such as lupus erythematosus and rheumatoid arthritis. In T1D, we have recently demonstrated that reduced circulating neutrophil numbers precede and accompany the disease and tha...
Source: Current Opinion in Endocrinology, Diabetes and Obesity - Category: Endocrinology Tags: DIABETES AND ENDOCHRINE PANCREAS II: Edited by Peter A. Gottlieb Source Type: research
By just engaging in the basic strategies in the Wheat Belly Total Health, Wheat Belly 10-Day Grain Detox, or Undoctored programs, many mild cases of small intestinal bacterial overgrowth, SIBO, reverse. These efforts thereby restore your ability to ingest prebiotic fibers without diarrhea, bloating, gas, abdominal discomfort, joint pain, and dark emotional feelings. Many people thereby are relieved of irritable bowel syndrome symptoms, fibromyalgia, or restless leg syndrome, or have greater power in reversing autoimmune conditions such as rheumatoid arthritis. Unfortunately, not everybody enjoys reversal of SIBO with our b...
Source: Wheat Belly Blog - Category: Cardiology Authors: Tags: SIBO grain-free probiotic undoctored wheat belly Source Type: blogs
Publication date: Available online 3 May 2019Source: Autoimmunity ReviewsAuthor(s): Paola Conigliaro, Paola Triggianese, Erica De Martino, Maria Sole Chimenti, Flavia Sunzini, Alessandra Viola, Claudia Canofari, Roberto PerriconeAbstractRheumatoid Arthritis (RA) is a chronic inflammatory disease characterized by a heterogeneous clinical response to the different treatments. Some patients are difficult to treat and do not reach the treatment targets as clinical remission or low disease activity. Known negative prognostic factors, such as the presence of auto-antiantibodies and joint erosion, the presence of a genetic profil...
Source: Autoimmunity Reviews - Category: Allergy & Immunology Source Type: research
The objective of this study was to evaluate muscular metabolic function in children with inactive juvenile idiopathic arthritis (JIA). Methods: Fifteen children with inactive JIA and fifteen healthy controls were matched by sex, biological age, and Tanner stage. Participants completed a submaximal incremental exercise test to determine their fat and carbohydrate oxidation rates. Results: Between the two groups, heart rate values and carbohydrate oxidation rates were the same, regardless of the relative intensity of exercise. Lipid oxidation rates were lower in JIA patients, regardless of the percentage of VO2 peak (p
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Maunil K. Desai1 and Roberta Diaz Brinton2,3* 1School of Pharmacy, University of Southern California, Los Angeles, CA, United States 2Center for Innovation in Brain Science, University of Arizona, Tucson, AZ, United States 3Departments of Pharmacology and Neurology, College of Medicine, University of Arizona, Tucson, AZ, United States Women have a higher incidence and prevalence of autoimmune diseases than men, and 85% or more patients of multiple autoimmune diseases are female. Women undergo sweeping endocrinological changes at least twice during their lifetime, puberty and menopause, with many women undergoin...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Increasing Upstream Chromatin Long–Range Interactions May Favor Induction of Circular RNAs in LysoPC-Activated Human Aortic Endothelial Cells Angus Li1,2†, Yu Sun1†, Charles Drummer IV1, Yifan Lu1, Daohai Yu3, Yan Zhou4, Xinyuan Li1, Simone J. Pearson1, Candice Johnson1, Catherine Yu5, William Y. Yang1, Kevin Mastascusa1, Xiaohua Jiang1, Jianxin Sun6, Thomas Rogers7, Wenhui Hu1, Hong Wang1 and Xiaofeng Yang1,7* 1Center for Metabolic Disease Research, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States 2Department of Biomedical Engineering, Pratt School of Engineering...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Mildren Porchas-Quijada1, Zyanya Reyes-Castillo1*, José Francisco Muñoz-Valle2, Sergio Durán-Barragán3,4, Virginia Aguilera-Cervantes1, Antonio López-Espinoza1, Mónica Vázquez-Del Mercado4, Mónica Navarro-Meza1 and Patricia López-Uriarte1 1Instituto de Investigaciones en Comportamiento Alimentario y Nutrición, Centro Universitario del Sur, Universidad de Guadalajara, Ciudad Guzmán, Mexico 2Instituto de Investigaciones en Ciencias Biomédicas, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Mexic...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Giuseppe Ristagno1*, Francesca Fumagalli1, Barbara Bottazzi2, Alberto Mantovani2,3,4, Davide Olivari1, Deborah Novelli1 and Roberto Latini1 1Department of Cardiovascular Research, Mario Negri Institute for Pharmacological Research IRCCS, Milan, Italy 2Humanitas Clinical and Research Center-IRCCS, Milan, Italy 3Humanitas University, Milan, Italy 4The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom The long pentraxin PTX3 is a member of the pentraxin family produced locally by stromal and myeloid cells in response to proinflammatory signals and microbial moieties. The p...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Michio Kawano1, Masaya Miyoshi1 and Tadaaki Miyazaki2* 1Milk Science Research Institute, Megmilk Snow Brand Co. Ltd., Saitama, Japan 2Department of Probiotics Immunology, Institute for Genetic Medicine, Hokkaido University, Hokkaido, Japan Lactobacillus helveticus SBT2171 (LH2171) has been reported to ameliorate the development of autoimmune diseases, such as collagen-induced arthritis and experimental autoimmune encephalitis in mice and inhibit interleukin (IL)-6 production in antigen-presenting cells in vitro. Regulation of cytokine production by antigen-presenting cells might be critical for the anti-inflamma...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
In conclusion, activation of pDCs and glandular epithelial cells by external or endogenous triggers induce the production of type I IFN through TLRs. Type I IFN will lead to BAFF release and activation of B cells with consequent auto-antibody production. Moreover, type I IFN may directly activate T cells which secrete pro-inflammatory cytokines, thus contributing to induce a pro-inflammatory environment. In this scenario, a feedback loop may be postulated between IFN-α production and immune complex formation which will amplify the effect of activated type I IFN system on onset or perpetuation of SS. Role of Chemokin...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
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