Search results for "Autoimmunity"
showing 9 items of 349 documents
HLA Class II Differentiates Between Thyroid and Polyglandular Autoimmunity.
2015
The HLA class II genes are susceptibility genes for autoimmune endocrine diseases; however, scarce data are available pertaining to the determinants of genetic susceptibility to polyglandular autoimmunity (PGA). A total of 300 consecutive and unselected patients with either PGA or monoglandular autoimmune thyroid disease (AITD) and 100 healthy control subjects were genotyped for the HLA class II DRB1, -DQA1, and -DQB1 alleles. Compared to patients with AITD and controls, the HLA-DRB1*03 (pc =0.001), *04 (pc<0.001), -DQA1*03 (pc<0.001), and -DQB1*02 (pc =0.001) alleles were increased in patients with PGA. When dividing patients with Hashimoto's thyroiditis (HT) into those with PGA (PGA-HT) v…
Deficiency of Nrf2 accelerates the effector phase of arthritis and aggravates joint disease
2011
14 páginas, 8 figuras, 1 tabla.-- et al.
Conserved TCR β chain usage in reactive arthritis; evidence for selection by a putative HLA-B27-associated autoantigen
2002
Previous work suggested that expanded CD8+ T-cell clones in the synovial fluid (SF) of HLA-B27+ patients with reactive arthritis (ReA) preferentially use the T-cell receptor variable region (TCRBV) 1, similar CDR3 sequences, and joining region (BJ) 2S3. To determine the range of conservation and disease-specificity of CDR3-sequences, we analyzed the TCRBV1-J2S3 repertoire from 33 healthy HLA-B27+ individuals, patients with various types of spondyloarthropathies (SpA), and with rheumatoid arthritis (RA) by CDR3-spectratyping. After collection and database submission of all available TCRB-CDR3 from HLA-B27-restricted or SpA-derived T cells, we systematically screened the entire human sequence…
PATHOGENESIS OF HUMAN LEUKOCYTE ANTIGEN B27–POSITIVE ARTHRITIS
1998
Acute reactive arthritis, spondyloarthropathy (SpA) in association with chronic inflammatory bowel disease (IBD) and ankylosing spondylitis (AS), although differing in individual presentation and in the natural course of disease, have in common a strong association with human leukocyte antigen (HLA)-B27 and a possible involvement of other genetic and also environmental factors. This group of related diseases belonging to the seronegative SpAs represents the clearest example of HLA class 1–linked disease in humans. Several newly emerging animal models of the SpAs, which have been reviewed in this issue of the Rheumatic Disease Clinics of North America , have permitted us to investigate the i…
Treatment with a CO-releasing molecule (CORM-3) reduces joint inflammation and erosion in murine collagen-induced arthritis.
2008
Contains fulltext : 70589.pdf (Publisher’s version ) (Closed access) OBJECTIVE: CO-releasing molecules (CO-RMs) are a novel class of anti-inflammatory agents. We have examined the possible therapeutic effects of CORM-3 in collagen-induced arthritis (CIA). METHODS: Arthritis was induced in DBA-1/J mice by type II collagen. Animals were treated with CORM-3 (5 and 10 mg/kg/day, intraperitoneally) or the inactive compound iCORM-3 (10 mg/kg/day, intraperitoneally) unable to release CO, from days 22 to 31. Production of anti-type II collagen antibodies, cytokines and cartilage olimeric matrix protein (COMP) was evaluated by enzyme-linked immunosorbent assay, and prostaglandin E(2) (PGE(2)) by rad…
Pathogenesis and autoimmunity initiated by a viral protein-induced apoptotic bodies
2016
Ihmisen parvovirus B19 (B19) on laajalle levinnyt, yleinen virus, joka aiheuttaa lapsissa parvorokkoa (viides tauti). Aikuisille B19 aiheuttaa erinäisiä sairauksia, muun muassa nivelkipuja ja – tulehdusta, anemiaa, sekä raskaana oleville sikiöpöhöä. Lisäksi B19 infektio saattaa johtaa autoimmuunisairauksiin, kuten punahukkaan (systemic lupus erythematosus, SLE), nivelreumaan ja sydänlihastulehdukseen. Toisaalta infektio voi olla myös täysin oireeton. Mekanismit, jotka johtavat B19 tartunnasta autoimmuunisairauteen, ovat vielä tuntemattomia. Kuitenkin tiedetään, että B19:n ei-rakenteellinen proteiini NS1 on soluille tuhoisa ja aiheuttaa niiden kuoleman (apoptoosin) muodostaen solunjäännösten…
Metabolic Reprogramming of Innate Immune Cells as a Possible Source of New Therapeutic Approaches in Autoimmunity.
2022
Immune cells undergo different metabolic pathways or immunometabolisms to interact with various antigens. Immunometabolism links immunological and metabolic processes and is critical for innate and adaptive immunity. Although metabolic reprogramming is necessary for cell differentiation and proliferation, it may mediate the imbalance of immune homeostasis, leading to the pathogenesis and development of some diseases, such as autoimmune diseases. Here, we discuss the effects of metabolic changes in autoimmune diseases, exerted by the leading actors of innate immunity, and their role in autoimmunity pathogenesis, suggesting many immunotherapeutic approaches.
Real-world experience with obeticholic acid in patients with primary biliary cholangitis
2021
Background & aims Obeticholic acid (OCA) is the second-line treatment approved for patients with primary biliary cholangitis (PBC) and an inadequate response or intolerance to ursodeoxycholic acid. We aimed to evaluate the effectiveness and safety of OCA under real-world conditions. Methods Patients were recruited into the Italian PBC Registry, a multicentre, observational cohort study that monitors patients with PBC at national level. The primary endpoint was the biochemical response according to Poise criteria; the secondary endpoint was the biochemical response according to normal range criteria, defined as normal levels of bilirubin, alkaline phosphatase (ALP), and alanine aminotransfer…
Pathogenic mechanisms of how human parvovirus breaks self-tolerance
2017
It is known that viral infections can cause acute, chronic, and autoimmune diseases (ADs). However, the mechanism of how a persistent viral infection contributes to ADs remains still unclear. In this thesis, pathological and immunological aspects of how common viruses can initiate autoimmunity were investigated, and human parvovirus B19 (B19V) was employed as a model virus. B19V non-structural protein 1 (NS1), a superfamily 3 (SF3) helicase, initiated DNA damage resulting in cellular apoptosis. The apoptotic bodies (ApoBods) induced by B19V NS1 were purified and characterized. These ApoBods contained viral NS1 proteins with modified autoimmune-associated self-antigens, e.g. DNA, Smith, Apol…