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Autoimmunity

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https://www.readbyqxmd.com/read/28412855/decreased-tlr4-expression-on-monocytes-may-cause-regulatory-t-cells-abnormality-in-patients-with-primary-immune-thrombocytopenia
#1
Yating Hao, Huiyuan Li, Yang Li, Mingen Lyu, Donglei Zhang, Rongfeng Fu, Yue Guan, Shixuan Wang, Boyang Sun, Xueqing Dou, Renchi Yang
Primary immune thrombocytopenia (ITP) is an autoimmune disease with many immune dysfunctions including T helper type 1 cell (Th1) polarization and regulatory T cells (Tregs) deficiency. This study aimed to determine the effects of TLR4 on Treg differentiation and the cytokine production of peripheral blood mononuclear cells (PBMCs) from patients with ITP. We found that expression of TLR4 on monocytes was significantly decreased in patients with active ITP than that in healthy controls and it had positive correlation with platelet count...
April 17, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28332868/is-autoimmunology-a-discipline-of-its-own-a-big-data-based-bibliometric-and-scientometric-analyses
#2
Abdulla Watad, Nicola Luigi Bragazzi, Mohammad Adawi, Howard Amital, Shaye Kivity, Naim Mahroum, Miri Blank, Yehuda Shoenfeld
Autoimmunology is a super-specialty of immunology specifically dealing with autoimmune disorders. To assess the extant literature concerning autoimmune disorders, bibliometric and scientometric analyses (namely, research topics/keywords co-occurrence, journal co-citation, citations, and scientific output trends - both crude and normalized, authors network, leading authors, countries, and organizations analysis) were carried out using open-source software, namely, VOSviewer and SciCurve. A corpus of 169,519 articles containing the keyword "autoimmunity" was utilized, selecting PubMed/MEDLINE as bibliographic thesaurus...
March 23, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28300427/annexin-a1-as-a-target-for-managing-murine-pristane-induced-systemic-lupus-erythematosus
#3
Nikolina Mihaylova, Silviya Bradyanova, Petroslav Chipinski, Melinda Herbáth, Stela Chausheva, Dobroslav Kyurkchiev, József Prechl, Andrey I Tchorbanov
Systemic lupus erythematosus (SLE) is a polygenic pathological disorder which involves multiple organs. Self-specific B cells play a main role in the lupus pathogenesis by generating autoantibodies as well as by serving as important autoantigen-presenting cells. Autoreactive T lymphocytes, on the other hand, are responsible for B cell activation and proliferation, and cytokine production. Therefore, both factors promote the idea that a down-modulation of activated self-reactive T and B cells involved in the pathogenic immune response is a reasonable approach for SLE therapy...
March 16, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28300425/complex-interaction-between-hnrnpd-mutations-and-risk-polymorphisms-is-associated-with-discordant-crohn-s-disease-in-monozygotic-twins
#4
Tejaswini Prakash, Avinash Veerappa, Nallur B Ramachandra
Crohn's disease (CD) is a chronic inflammatory bowel disease (IBD) affecting the lining of digestive tracts of the colon and ileum. To investigate the reasons behind the presence of CD phenotype in one of the monozygotic (MZ) twins, we utilized the whole exome sequence (WES) datasets of CD tissue biopsy and CD blood of affected twin and the exome dataset of blood from healthy twin. We report the presence of discordant and rare damaging mutation in HNRNPD and other risk polymorphisms such as, rs12103, rs2241880, rs3810936, rs7076156, rs1042058 and rs1292053...
March 16, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28276713/aberrant-function-of-myeloid-derived-suppressor-cells-mdscs-in-experimental-colitis-and-in-inflammatory-bowel-disease-ibd-immune-responses
#5
Eleni Kontaki, Dimitrios T Boumpas, Maria Tzardi, Ioannis A Mouzas, Konstantinos A Papadakis, Panayotis Verginis
BACKGROUND AND AIMS: Myeloid-derived suppressor cells (MDSCs) encompass a novel population of suppressor cells and a potential candidate for cell-based therapies in inflammatory diseases. Herein, we investigated their immunomodulatory properties in experimental inflammatory colitis and T cell-mediated immune responses in inflammatory bowel disease (IBD) patients. METHODS: MDSCs (defined as CD14(-)HLA(-)DR(-/low)CD33(+)CD15(+)) numbers were determined in peripheral blood (PB) from IBD patients...
March 3, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28276714/diagnostic-significance-of-serum-concentrations-of-soluble-fas-ligand-sfasl-in-children-with-autoimmune-thyroid-disease
#6
Hanna Mikos, Marcin Mikos, Marek Niedziela
INTRODUCTION: The aim of the study was to assess serum levels of sFasL as a marker of thyroid dysfunction in children with autoimmune thyroid disease (AITD). DESIGN: The group comprised 45 newly diagnosed children with Hashimoto's thyroiditis and Graves' disease versus euthyroid control group: 11 with hypothyroidism (10 girls and 1 boy, aged 12.2 ± 1.9 years), 19 children with hyperthyroidism (15 girls and 4 boys, aged 12.4 ± 4.9 years) and 15 healthy subjects (7 girls and 8 boys, aged 10...
February 21, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28276715/inflammation-in-sj%C3%A3-gren-s-syndrome-cause-or-consequence
#7
Ana Raquel Rodrigues, Raquel Soares
Sjögren's syndrome (SS) is an autoimmune disease most commonly characterized by ocular and oral dryness. Despite the high prevalence of SS, generation and perpetuation of this disease is still unclear in many aspects. Inflammation, nonetheless, seems to play a central role in this pathology especially in the form of Th-1, Th-2 and Th-17 cytokines release within different aspects, concentrations and connections involved in the maintenance of the syndrome. Moreover, the chronically created pro-inflammatory environment appears to promote glandular atrophy and irreparable architectural modifications...
February 14, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28263100/decreased-serum-dnase1-activity-in-patients-with-autoimmune-liver-diseases
#8
Nikolaos K Gatselis, Aigli G Vakrakou, Kalliopi Zachou, Theodoros Androutsakos, Kalliopi Azariadis, Gregorios Hatzis, Menelaos N Manoussakis, George N Dalekos
Deoxyribonuclease1 (DNase1) is involved in chromatin degradation of apoptotic cells. Its deficiency results in accumulation of self-DNA, which in turn may induce inflammation and autoimmunity. We assessed for the first time serum DNase1-activity in a large consecutive cohort of treatment-naïve patients with autoimmune liver diseases (ALD). DNase1-activity was determined by single radial enzyme-diffusion (SRED) at diagnosis of 224 patients with autoimmune hepatitis (AIH), 249 with primary biliary cirrhosis (PBC) and 36 with primary sclerosing cholangitis (PSC)...
March 2017: Autoimmunity
https://www.readbyqxmd.com/read/28263099/modulation-of-the-peripheral-immune-system-after-low-dose-radon-spa-therapy-detailed-longitudinal-immune-monitoring-of-patients-within-the-rad-on01-study
#9
Paul F Rühle, Roland Wunderlich, Lisa Deloch, Claudia Fournier, Andreas Maier, Gerhart Klein, Rainer Fietkau, Udo S Gaipl, Benjamin Frey
The pain-relieving effects of low-dose radon therapies on patients suffering from chronic painful inflammatory diseases have been described for centuries. Even though it has been suggested that low doses of radiation may attenuate chronic inflammation, the underlying mechanisms remain elusive. Thus, the RAD-ON01 study was initiated to examine the effects of radon spa therapy and its low doses of alpha radiation on the human immune system. In addition to an evaluation of pain parameters, blood was drawn from 100 patients suffering from chronic painful degenerative musculoskeletal diseases before as well as 6, 12, 18, and 30 weeks after the start of therapy...
March 2017: Autoimmunity
https://www.readbyqxmd.com/read/28263098/type-iii-interferons-and-rheumatoid-arthritis-correlation-between-interferon-lambda-1-interleukin-29-and-antimutated-citrullinated-vimentin-antibody-levels
#10
Diana Castillo-Martínez, Maribel Juarez, Mariana Patlán, Araceli Páez, Felipe Massó, Luis M Amezcua-Guerra
AIM: To assess serum type III or lambda (λ) interferons (IFN) levels and its clinical and laboratory associations in rheumatoid arthritis (RA). METHODS: A cross-sectional study including 43 patients with RA (86% females; age 45.3 ± 10.3 years) and 43 healthy individuals was performed. Clinical data including disease activity, acute-phase reactants, rheumatoid factor and anticyclic citrullinated peptide (anti-CCP) antibodies were collected. Serum IFNλ1, IFNλ2, IFNλ3, CXCL8 and anti-mutated citrullinated vimentin (anti-MCV) antibody levels were measured...
March 2017: Autoimmunity
https://www.readbyqxmd.com/read/28263097/transcriptional-and-epigenetic-regulation-of-follicular-t-helper-cells-and-their-role-in-autoimmunity
#11
Hong Qiu, Haijing Wu, Vera Chan, Chak-Sing Lau, Qianjin Lu
T-follicular helper (Tfh) cells are a specialized subset of T cells that provide help to B cells and promote the formation of germinal centers (GCs). Tfh cells transmit important signals to B cells that drive class switch recombination, somatic hyper-mutation, the generation of high-affinity antibodies, immunological memory and their differentiation into plasma cells or memory B cells in the GCs. Tfh-cell differentiation is regulated by the coordinated functions of distinct cytokines, including interleukin (IL)-6, IL-21, IL-12, IL-23, IL-2, IL-7 and transforming growth factor-β (TGF-β), as well as transcription factors, including B-cell lymphoma 6 protein (Bcl-6), Signal transducers and activators of transcription (STAT)1, STAT3, STAT4, B-cell activating transcription factor (Batf), interferon regulatory factor 4 (IRF4), v-maf avian musculoaponeurotic fibrosarcoma oncogene homolog (C-Maf), T-cell-specific transcription factor 1 (TCF-1) and Achaete-scute homolog 2 (Acl2), which have been shown to form a complex transcriptional network...
March 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166685/spontaneous-germinal-centers-and-autoimmunity
#12
Phillip P Domeier, Stephanie L Schell, Ziaur S M Rahman
Germinal centers (GCs) are dynamic microenvironments that form in the secondary lymphoid organs and generate somatically mutated high-affinity antibodies necessary to establish an effective humoral immune response. Tight regulation of GC responses is critical for maintaining self-tolerance. GCs can arise in the absence of purposeful immunization or overt infection (called spontaneous GCs, Spt-GCs). In autoimmune-prone mice and patients with autoimmune disease, aberrant regulation of Spt-GCs is thought to promote the development of somatically mutated pathogenic autoantibodies and the subsequent development of autoimmunity...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166684/pathogenic-mechanisms-of-ige-mediated-inflammation-in-self-destructive-autoimmune-responses
#13
Rachel Ettinger, Jodi L Karnell, Jill Henault, Santosh K Panda, Jeffrey M Riggs, Roland Kolbeck, Miguel A Sanjuan
Autoantibodies of the IgG subclass are pathogenic in a number of autoimmune disorders such as systemic lupus erythomatosus. The presence of circulating IgE autoantibodies in autoimmune patients has also been known for almost 40 years. Despite their role in allergies, IgE autoantibodies are not associated with a higher rate of atopy in these patients. However, recently they have been recognized as active drivers of autoimmunity through mechanisms involving the secretion of Type I interferons by plasmacytoid dendritic cells (pDC), the recruitment of basophils to lymph nodes, and the activation of adaptive immune responses through B and T cells...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166683/b-cell-contribution-of-the-cd4-t-cell-inflammatory-phenotypes-in-systemic-lupus-erythematosus
#14
Seung-Chul Choi, Laurence Morel
Systemic lupus erythematosus is an autoimmune disease in which the effector molecules responsible for tissue damage are antibodies directed against a large number of self-antigens, among which nucleic acids complexed with proteins play a prominent role. These pathogenic autoantibodies are produced by plasma cells differentiated from activated autoreactive B cells, a process that requires complex interactions between multiple components of the immune systems. A key step in the activation of autoreactive B cells is provided by CD4(+ )T cells through cytokines and cell-to-cell contact...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166682/clonally-expanded-cytotoxic-cd4-t-cells-and-the-pathogenesis-of-igg4-related-disease
#15
Hamid Mattoo, John H Stone, Shiv Pillai
IgG4-related disease (IgG4-RD) is a systemic condition of unknown cause characterized by highly fibrotic lesions, with dense lymphoplasmacytic infiltrates containing a preponderance of IgG4-expressing plasma cells. CD4(+) T cells and B cells constitute the major inflammatory cell populations in IgG4-RD lesions. IgG4-RD patients with active, untreated disease show a marked expansion of plasmablasts in the circulation. Although the therapeutic depletion of B cells suggests a role for these cells in the disease, a direct role for B cells or IgG4 in the pathogenesis of IgG4-RD is yet to be demonstrated...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166681/b-cells-in-multiple-sclerosis
#16
Hartmut Wekerle
B lymphocytes have essential roles in the autoimmune pathogenesis of multiple sclerosis (MS). They regulate the autoimmune response and participate in the development of the CNS lesions. This review discusses nature and functions of B cells in MS, and retraces the recruitment of brain-autoimmune B cells from the B cell repertoire. Multiple sclerosis is commonly considered as an autoimmune demyelinating disease, where myelin-reactive T cells enter the CNS from outside, and drive the inflammatory changes that ultimately create the degenerative MS plaque...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166680/opposing-roles-of-b-lymphocyte-subsets-in-atherosclerosis
#17
Tin Kyaw, Peter Tipping, Alex Bobik, Ban-Hock Toh
Atherosclerosis is initiated by cholesterol entry into arteries that triggers chronic immune-inflammatory lesions in the vessels. Early lesions are clinically insignificant but advanced complex lesions and vulnerable rupture prone lesions impact on quality of life and can be life threatening. Rupture of vulnerable atherosclerotic lesions initiates thrombotic occlusion of vital arteries precipitating heart attacks and strokes that remain major killers globally despite therapeutic use of statins to lower blood cholesterol levels...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166679/-b-cells-and-autoimmunity-2016
#18
Moncef Zouali
No abstract text is available yet for this article.
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28166678/alterations-in-b-cell-development-cdr-h3-repertoire-and-dsdna-binding-antibody-production-among-c57bl-6-%C3%AE-d-id-mice-congenic-for-the-lupus-susceptibility-loci-sle1-sle2-or-sle3
#19
Mohamed Khass, Robert L Schelonka, Cun Ren Liu, Ada Elgavish, Laurence Morel, Peter D Burrows, Harry W Schroeder
Systemic lupus erythematosus (SLE) is an autoimmune disease that reflects a failure to block the production of self-reactive antibodies, especially those that bind double-stranded DNA (dsDNA). Backcrossing the lupus-prone NZM2410 genome onto C57BL/6 led to the identification of three genomic intervals, termed sle1, sle2 and sle3, which are associated with lupus susceptibility. We previously generated a C57BL/6 strain congenic for an immunoglobulin DH locus (ΔD-iD) that enriches for arginine at dsDNA-binding positions...
February 2017: Autoimmunity
https://www.readbyqxmd.com/read/28100093/p19-targeted-abd-derived-protein-variants-inhibit-il-23-binding-and-exert-suppressive-control-over-il-23-stimulated-expansion-of-primary-human-il-17-t-cells
#20
Lucie Křížová, Milan Kuchař, Hana Petroková, Radim Osička, Marie Hlavničková, Ondřej Pelák, Jiří Černý, Tomáš Kalina, Petr Malý
Interleukin-23 (IL-23), a heterodimeric cytokine of covalently bound p19 and p40 proteins, has recently been closely associated with development of several chronic autoimmune diseases such as psoriasis, psoriatic arthritis or inflammatory bowel disease. Released by activated dendritic cells, IL-23 interacts with IL-23 receptor (IL-23R) on Th17 cells, thus promoting intracellular signaling, a pivotal step in Th17-driven pro-inflammatory axis. Here, we aimed to block the binding of IL-23 cytokine to its cell-surface receptor by novel inhibitory protein binders targeted to the p19 subunit of human IL-23...
January 19, 2017: Autoimmunity
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