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rheumatoid arthritis, regulatory t cell

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https://www.readbyqxmd.com/read/28928392/mucosa-associated-lymphoid-tissue-lymphoma-translocation-1-as-a-novel-therapeutic-target-for-rheumatoid-arthritis
#1
Chang Hoon Lee, Su Jeong Bae, Miok Kim
Emerging evidence suggests that mucosa-associated lymphoid tissue lymphoma translocation 1 (MALT1) is a key regulator of inflammatory diseases; however, the pathological role of MALT1 in rheumatoid arthritis (RA) is not well understood. Consequently, this protein has not been therapeutically targeted for the treatment of RA. MALT1 plays a role in the paracaspase pathway, has proteolytic activity and is involved in the regulation of inflammatory responses. In this study, we found that the MALT1-targeting inhibitory small molecule, MALT1 selective inhibitor 2-chloro-N-[4-[5-(3,4-dichlorophenyl)-3-(2-methoxyethoxy)-1H-1,2,4-triazol-1-yl]phenylacetamide (MI-2) strongly suppresses the differentiation of monocytes into osteoclasts in the absence or presence of the inflammatory cytokine tumour necrosis factor α...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28877244/the-role-of-dietary-sodium-intake-on-the-modulation-of-t-helper-17-cells-and-regulatory-t-cells-in-patients-with-rheumatoid-arthritis-and-systemic-lupus-erythematosus
#2
Rossana Scrivo, Laura Massaro, Cristiana Barbati, Marta Vomero, Fulvia Ceccarelli, Francesca Romana Spinelli, Valeria Riccieri, Alessandra Spagnoli, Cristiano Alessandri, Giovambattista Desideri, Fabrizio Conti, Guido Valesini
We aimed at investigating whether the frequency and function of T helper 17 (Th17) and regulatory T cells (Treg) are affected by a restriction of dietary sodium intake in patients with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). We enrolled RA and SLE patients not receiving drugs known to increase urinary sodium excretion. Patients underwent a dietary regimen starting with a restricted daily sodium intake followed by a normal-sodium daily intake. The timepoints were identified at baseline (T0), after 3 weeks of low-sodium dietary regimen (T3), after 2 weeks of normal-sodium dietary regimen (T5)...
2017: PloS One
https://www.readbyqxmd.com/read/28840350/regulatory-t-cells-and-il-10-as-modulators-of-chikungunya-disease-outcome-a-preliminary-study
#3
S P Kulkarni, M Ganu, P Jayawant, S Thanapati, A Ganu, A S Tripathy
Regulatory T (Treg) cells hold centre stage in regulating the immune responses in most viral infections. However, their involvement in chikungunya infection is unexplored. In the current study, the frequencies and functionality of peripheral Treg and T effector (Teff) cells were assessed during different phases of chikungunya by flow cytometry and in-vitro cytokine assays. Treg cells were also studied in rheumatoid arthritis (RA) patients, whose symptoms closely mimic chronic chikungunya arthritis patients...
August 25, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28814613/osteoimmunology-the-conceptual-framework-unifying-the-immune-and-skeletal-systems
#4
REVIEW
Kazuo Okamoto, Tomoki Nakashima, Masahiro Shinohara, Takako Negishi-Koga, Noriko Komatsu, Asuka Terashima, Shinichiro Sawa, Takeshi Nitta, Hiroshi Takayanagi
The immune and skeletal systems share a variety of molecules, including cytokines, chemokines, hormones, receptors, and transcription factors. Bone cells interact with immune cells under physiological and pathological conditions. Osteoimmunology was created as a new interdisciplinary field in large part to highlight the shared molecules and reciprocal interactions between the two systems in both heath and disease. Receptor activator of NF-κB ligand (RANKL) plays an essential role not only in the development of immune organs and bones, but also in autoimmune diseases affecting bone, thus effectively comprising the molecule that links the two systems...
October 1, 2017: Physiological Reviews
https://www.readbyqxmd.com/read/28810629/inhibition-of-microrna-34a-ameliorates-murine-collagen-induced-arthritis
#5
Qiujie Dang, Fan Yang, Hongwei Lei, Xin Liu, Minglu Yan, He Huang, Xuemei Fan, Yang Li
Rheumatoid arthritis (RA) is one of the most frequently occurring autoimmne diseases, with symptoms including synovium hyperplasia, immune disorder, cartilage damage and bone resorption. It has previously been demonstrated that microRNA-34a (miR-34a) may participate in cell apoptosis, immune activation and bone metabolism, therefore the present study investigated the effects of miR-34a on RA. Collagen-induced arthritic (CIA) mice were employed as a murine model of experimental arthritis, and it was demonstrated that the level of miR-34a in the spleens, lymph nodes and synovium was increased in the CIA mice compared with normal DBA/1j mice...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28804903/targeting-of-tolerogenic-dendritic-cells-towards-heat-shock-proteins-a-novel-therapeutic-strategy-for-autoimmune-diseases
#6
REVIEW
Manon A A Jansen, Rachel Spiering, Femke Broere, Jacob M van Laar, John D Isaacs, Willem van Eden, Catharien M U Hilkens
Tolerogenic dendritic cells (tolDCs) are a promising therapeutic tool to restore immune tolerance in autoimmune diseases. The rationale of using tolDCs is that they can specifically target the pathogenic T cell response, while leaving other, protective T cell responses intact. Several ways of generating therapeutic tolDCs have been described, but whether these tolDCs should be loaded with autoantigen(s), and if so, with which autoantigen(s), remains unclear. Autoimmune diseases, such as rheumatoid arthritis, are not commonly defined by a single, universal, autoantigen...
August 14, 2017: Immunology
https://www.readbyqxmd.com/read/28804691/combination-of-celecoxib-celebrex-%C3%A2-and-cd19-car-redirected-ctl-immunotherapy-for-the-treatment-of-b-cell-non-hodgkin-s-lymphomas
#7
REVIEW
Tam Nm Dinh, Alexandra S Onea, Ali R Jazirehi
The nonsteroidal anti-inflammatory drug (NSAID) Celecoxib (Celebrex(®)) received Food and Drug Administration (FDA) approval in 1998 for treatment of osteoarthritis and rheumatoid arthritis, and in recent years, its use has been extended to various types of malignancies, such as breast, colon, and urinary cancers. To maintain the survival of malignant B cells, non-Hodgkin's Lymphoma (NHL) is highly dependent on inflammatory microenvironment, and is inhibited by celecoxib. Celecoxib hinders tumor growth interacting with various apoptotic genes, such as cyclooxygenase-2 (Cox-2), B-cell lymphoma 2 (Bcl-2) family, phosphor-inositide-3 kinase/serine-threonine-specific protein kinase (PI3K/Akt), and inhibitors of apoptosis proteins (IAP) family...
2017: American Journal of Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28799796/immune-modulation-by-curcumin-the-role-of-interleukin-10
#8
Hamid Mollazadeh, Arrigo F G Cicero, Christopher N Blesso, Matteo Pirro, Muhammed Majeed, Amirhossein Sahebkar
Cytokines are small secreted proteins released by different types of cells with specific effects on cellular signaling and communication via binding to their receptors on the cell surface. IL-10 is known to be a pleiotropic and potent anti-inflammatory and immunosuppressive cytokine that is produced by both innate and adaptive immunity cells including dendritic cells, macrophages, mast cells, natural killer cells, eosinophils, neutrophils, B cells, CD8(+) T cells, and TH1, TH2, and TH17 and regulatory T cells...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28765121/novel-therapies-for-immune-mediated-inflammatory-diseases-what-can-we-learn-from-their-use-in-rheumatoid-arthritis-spondyloarthritis-systemic-lupus-erythematosus-psoriasis-crohn-s-disease-and-ulcerative-colitis
#9
REVIEW
Kenneth F Baker, John D Isaacs
The past three decades have witnessed remarkable advances in our ability to target specific elements of the immune and inflammatory response, fuelled by advances in both biotechnology and disease knowledge. As well as providing superior treatments for immune-mediated inflammatory diseases (IMIDs), such therapies also offer unrivalled opportunities to study the underlying immunopathological basis of these conditions.In this review, we explore recent approaches to the treatment of IMIDs and the insights to pathobiology that they provide...
August 1, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28753982/th17-in-animal-models-of-rheumatoid-arthritis
#10
REVIEW
Motomu Hashimoto
IL-17-secreting helper CD4 T cells (Th17 cells) constitute a newly identified subset of helper CD4 T cells that play a key role in the development of rheumatoid arthritis (RA) in its animal models. Recently, several models of spontaneous RA, which elucidate the mechanism of RA onset, have been discovered. These animal models shed new light on the role of Th17 in the development of autoimmune arthritis. Th17 cells coordinate inflammation and promote joint destruction, acting on various cells, including neutrophils, macrophages, synovial fibroblasts, and osteoclasts...
July 21, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28714991/resolution-of-inflammation-by-interleukin-9-producing-type-2-innate-lymphoid-cells
#11
Simon Rauber, Markus Luber, Stefanie Weber, Lisa Maul, Alina Soare, Thomas Wohlfahrt, Neng-Yu Lin, Katharina Dietel, Aline Bozec, Martin Herrmann, Mark H Kaplan, Benno Weigmann, Mario M Zaiss, Ursula Fearon, Douglas J Veale, Juan D Cañete, Oliver Distler, Felice Rivellese, Costantino Pitzalis, Markus F Neurath, Andrew N J McKenzie, Stefan Wirtz, Georg Schett, Jörg H W Distler, Andreas Ramming
Inflammatory diseases such as arthritis are chronic conditions that fail to resolve spontaneously. While the cytokine and cellular pathways triggering arthritis are well defined, those responsible for the resolution of inflammation are incompletely characterized. Here we identified interleukin (IL)-9-producing type 2 innate lymphoid cells (ILC2s) as the mediators of a molecular and cellular pathway that orchestrates the resolution of chronic inflammation. In mice, the absence of IL-9 impaired ILC2 proliferation and activation of regulatory T (Treg) cells, and resulted in chronic arthritis with excessive cartilage destruction and bone loss...
August 2017: Nature Medicine
https://www.readbyqxmd.com/read/28713386/impairment-of-granzyme-b-producing-regulatory-b-cells-correlates-with-exacerbated-rheumatoid-arthritis
#12
Liling Xu, Xu Liu, Hongjiang Liu, Lei Zhu, Huaqun Zhu, Jian Zhang, Limin Ren, Pingzhang Wang, Fanlei Hu, Yin Su
Hyperactivated B cells have been demonstrated the contribution to the development of rheumatoid arthritis (RA). While the recognition of the negative regulatory function of B cells further promoted our understanding of their pathogenic role in RA. Recently, a new population of granzyme B (GrB)-producing B cells was identified, which was proved to be involved in cancer and infectious diseases. However, their characteristics and roles in RA remain to be elucidated. In the present study, we aim to further characterize whether B cells could produce GrB and reveal their potential role in the pathogenesis of RA...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28704638/regulator-of-calcineurin-3-ameliorates-autoimmune-arthritis-by-suppressing-th17-cell-differentiation
#13
Jin-Sil Park, Jeong-Hee Jeong, Jae-Kyeong Byun, Mi-Ae Lim, Eun-Kyung Kim, Sung-Min Kim, Si-Young Choi, Sung-Hwan Park, Jun-Ki Min, Mi-La Cho
Regulator of calcineurin 3 (RCAN3), an endogenous regulator of the calcineurin-nuclear factor of activated T cells (NFAT) signaling pathway, inhibits the phosphatase activity of calcineurin, the nuclear translocation of NFAT, and the NFAT downstream pathway. To investigate the effects of RCAN3 on T-cell regulatory function and the development and progression of inflammatory arthritis, we studied the effects of RCAN3 transfection on regulation of Th17 cell differentiation in a murine T-lymphoma cell line and primary splenic CD4(+) T cells...
September 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28673326/therapeutic-effect-of-a-novel-histone-deacetylase-6-inhibitor-ckd-l-on-collagen-induced-arthritis-in-vivo-and-regulatory-t-cells-in-rheumatoid-arthritis-in-vitro
#14
Bo Ram Oh, Dong-Hyeon Suh, Daekwon Bae, Nina Ha, Young Il Choi, Hyun Jung Yoo, Jin Kyun Park, Eun Young Lee, Eun Bong Lee, Yeong Wook Song
BACKGROUND: Histone deacetylase (HDAC) inhibitor has recently been reported to have a therapeutic effect as an anti-inflammatory agent in collagen-induced arthritis (CIA). We investigated the therapeutic effect of a new selective HDAC6 inhibitor, CKD-L, compared to ITF 2357 or Tubastatin A on CIA and regulatory T (Treg) cells in patients with rheumatoid arthritis (RA). METHODS: CIA was induced by bovine type II collagen (CII) in DBA/1 J mice. Mice were treated with HDAC inhibitor for 18 days...
July 3, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28664612/autoimmune-arthritis-induces-paired-immunoglobulin-like-receptor-b-expression-on-cd4-t%C3%A2-cells-from-skg-mice
#15
Kathrin Rothe, Nora Raulien, Gabriele Köhler, Matthias Pierer, Dagmar Quandt, Ulf Wagner
The chronic, destructive autoimmune arthritis in SKG mice, which closely resembles human rheumatoid arthritis, is the result of self-reactive T cells escaping thymic deletion. Since the inhibitory receptor LIR-1 is up-regulated on auto-reactive T cells in human rheumatoid arthritis, the role of its murine ortholog PIR-B was investigated. Peripheral CD4(+) T cells from SKG mice were found to frequently express PIR-B, and this population produces more frequently IL-17 upon in vitro stimulation compared to PIR-B(-) cells...
June 30, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28652101/salt-inflammatory-joint-disease-and-autoimmunity
#16
Johanna Sigaux, Luca Semerano, Guillaume Favre, Natacha Bessis, Marie-Christophe Boissier
Salt is a vital nutrient. Excess salt intake, however, has recently been blamed for triggering and/or worsening certain autoimmune diseases. In vitro, the cells involved in innate and adaptive immune responses exhibit an inflammatory profile when placed in hypertonic saline. More specifically, macrophages release increased amounts of proinflammatory cytokines, produce reactive oxygen species, and become capable of activating the inflammasome. T helper cells, via activation of serum and glucocorticoid-regulated kinase 1 (SGK1), overexpress IL-17A and IL-23R and differentiate into Th17 cells; whereas regulatory T cells lose the inhibitory capabilities needed to preserve self-tolerance...
June 23, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28642760/interleukin-6-in-allogeneic-stem-cell-transplantation-its-possible-importance-for-immunoregulation-and-as-a-therapeutic-target
#17
REVIEW
Tor Henrik Anderson Tvedt, Elisabeth Ersvaer, Anders Aune Tveita, Øystein Bruserud
Allogeneic stem cell transplantation is associated with a high risk of treatment-related mortality mainly caused by infections and graft-versus-host disease (GVHD). GVHD is characterized by severe immune dysregulation and impaired regeneration of different tissues, i.e., epithelial barriers and the liver. The balance between pro- and anti-inflammatory cytokine influences the risk of GVHD. Interleukin-6 (IL-6) is a cytokine that previously has been associated with pro-inflammatory effects. However, more recent evidence from various autoimmune diseases (e...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28615031/leucine-rich-alpha-2-glycoprotein-promotes-th17-differentiation-and-collagen-induced-arthritis-in-mice-through-enhancement-of-tgf-%C3%AE-smad2-signaling-in-na%C3%A3-ve-helper-t-cells
#18
Hayato Urushima, Minoru Fujimoto, Takashi Mishima, Tomoharu Ohkawara, Hiromi Honda, Hyun Lee, Hirohisa Kawahata, Satoshi Serada, Tetsuji Naka
BACKGROUND: Leucine-rich alpha 2 glycoprotein (LRG) has been identified as a serum protein elevated in patients with active rheumatoid arthritis (RA). Although the function of LRG is ill-defined, LRG binds with transforming growth factor (TGF)-β and enhances Smad2 phosphorylation. Considering that the imbalance between T helper 17 (Th17) cells and regulatory T cells (Treg) plays important roles in the pathogenesis of RA, LRG may affect arthritic pathology by enhancing the TGF-β-Smad2 pathway that is pivotal for both Treg and Th17 differentiation...
June 14, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28583308/an-epitope-specific-derg-pg70-leaps-vaccine-modulates-t-cell-responses-and-suppresses-arthritis-progression-in-two-related-murine-models-of-rheumatoid-arthritis
#19
Katalin Mikecz, Tibor T Glant, Adrienn Markovics, Kenneth S Rosenthal, Julia Kurko, Roy E Carambula, Steve Cress, Harold L Steiner, Daniel H Zimmerman
Rheumatoid arthritis (RA) is an autoimmune joint disease maintained by aberrant immune responses involving CD4+ T helper (Th)1 and Th17 cells. In this study, we tested the therapeutic efficacy of Ligand Epitope Antigen Presentation System (LEAPS™) vaccines in two Th1 cell-driven mouse models of RA, cartilage proteoglycan (PG)-induced arthritis (PGIA) and PG G1-domain-induced arthritis (GIA). The immunodominant PG peptide PG70 was attached to a DerG or J immune cell binding peptide, and the DerG-PG70 and J-PG70 LEAPS vaccines were administered to the mice after the onset of PGIA or GIA symptoms...
July 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28582403/vitamin-d-and-immunomodulation-in-early-rheumatoid-arthritis-a-randomized-double-blind-placebo-controlled-study
#20
RANDOMIZED CONTROLLED TRIAL
Ilaria Buondonno, Guido Rovera, Francesca Sassi, Micol Maria Rigoni, Claudia Lomater, Simone Parisi, Raffaele Pellerito, Giovanni Carlo Isaia, Patrizia D'Amelio
The aim of this study was to evaluate differences in T helper cell sub-types and osteoclast (OCs) precursors in peripheral blood between patients affected by early rheumatoid arthritis (eRA) and healthy controls. The effect of administration of cholecalcipherol on clinical and laboratory parameters was subsequently evaluated, by a parallel, randomized double blind, placebo controlled trial. Thirty nine eRA patients and 31 age-matched controls were enrolled and compared for levels of 25OH vitamin D, T helper cell sub-types, OCs precursors including both classical and non-classical and pro-inflammatory cytokines at baseline...
2017: PloS One
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