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IL 17 receptor B

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https://www.readbyqxmd.com/read/28026029/anti-lgi1-encephalitis-is-associated-with-unique-hla-subtypes
#1
Tae-Joon Kim, Soon-Tae Lee, Jangsup Moon, Jun-Sang Sunwoo, Jung-Ick Byun, Jung-Ah Lim, Yong-Won Shin, Jin Sun Jun, Han Sang Lee, Woo-Jin Lee, Ah Reaum Yang, Yunhee Choi, Kyung-Il Park, Keun-Hwa Jung, Ki-Young Jung, Manho Kim, Sang Kun Lee, Kon Chu
OBJECTIVE: Autoimmune encephalitis, represented by anti-leucine-rich glioma-inactivated 1 (anti-LGI1) and anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis, has increasing clinical significance based on recent discoveries of neuronal autoantibodies. However, its immunopathogenesis is not fully understood. Here, we investigated whether autoimmune encephalitis is associated with the human leukocyte antigen (HLA) subtypes. METHODS: We compared the HLA genotypes of 11 anti-LGI1 and 17 anti-NMDAR encephalitis patients to the control groups, which consisted of 210 epilepsy patients and 485 healthy Koreans...
December 27, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/27995575/cerebrospinal-fluid-biomarkers-and-hiv-associated-neurocognitive-disorders-in-hiv-infected-individuals-in-rakai-uganda
#2
Mahsa Abassi, Bozena M Morawski, Gertrude Nakigozi, Noeline Nakasujja, Xiangrong Kong, David B Meya, Kevin Robertson, Ronald Gray, Maria J Wawer, Ned Sacktor, David R Boulware
In the USA, increased cerebrospinal fluid (CSF) inflammatory cytokines have been observed in antiretroviral therapy (ART)-naive, HIV-seropositive individuals with HIV-associated neurocognitive disorder (HAND). We characterized the relationship between HAND and CSF biomarker expression in ART-naive, HIV-seropositive individuals in Rakai, Uganda. We analyzed CSF of 78 HIV-seropositive, ART-naive Ugandan adults for 17 cytokines and 20 neurodegenerative biomarkers via Luminex multiplex assay. These adults underwent neurocognitive assessment to determine their degree of HAND...
December 19, 2016: Journal of Neurovirology
https://www.readbyqxmd.com/read/27992693/scleroderma-peripheral-b-lymphocytes-secrete-interleukin-6-and-tgf-%C3%AE-and-activate-fibroblasts
#3
Nicolas Dumoitier, Benjamin Chaigne, Alexis Régent, Sébastien Lofek, Maïssa Mhibik, Peter Dorfmüller, Benjamin Terrier, Jonathan London, Alice Bérezné, Nicolas Tamas, Nadine Varin-Blank, Luc Mouthon
OBJECTIVE: To study the role of B lymphocytes in systemic sclerosis (SSc). PATIENTS AND METHODS: Peripheral B cell subpopulations, interleukin 6 (IL-6) and transforming growth factor-beta (TGF-β) productions were analyzed using flow cytometry and multiplex assay. Fibroblasts proliferation rate upon incubation with supernatants of B cells isolated from SSc patients or healthy controls (HC) was assessed using XTT, BrdU and Ki67. Collagen production was assessed using a collagen assay...
December 19, 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27984078/anti-inflammatory-and-protective-effects-of-mt-031-a-novel-multitarget-mao-a-and-ache-buche-inhibitor-in-scopolamine-mouse-model-and-inflammatory-cells
#4
Wei Liu, Alon Rabinovich, Yuval Nash, Dan Frenkel, Yuqiang Wang, Moussa B H Youdim, Orly Weinreb
Previous study demonstrated that the novel multitarget compound, MT-031 preserved in one molecule entity the beneficial properties of its parent drugs, rasagiline and rivastigmine, and exerted high dual potencies of monoamine oxidase-A (MAO-A) and cholinesterase (ChE) inhibition in acute-treated mice and neuroprotective effects against H2O2-induced neurotoxicity in human neuroblastoma SH-SY5Y cells. The present study aimed to further investigate the anti-inflammatory and protective effects of MT-031 in scopolamine mouse model and inflammatory cell cultures...
October 28, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27933212/spontaneous-destructive-periodontitis-and-skeletal-bone-damage-in-transgenic-mice-carrying-a-human-shared-epitope-coding-hla-drb1-allele
#5
Prashasnika Gehlot, Sarah L Volk, Hector F Rios, Karl J Jepsen, Joseph Holoshitz
OBJECTIVE: Shared epitope (SE)-coding DRB1 alleles are associated with bone erosion in several diseases, including rheumatoid arthritis (RA) and periodontal disease (PD), but the underlying mechanism is unknown. We have recently identified the SE as an osteoclast-activating ligand. To better understand the biological effects of the SE in vivo, here we sought to determine whether it can facilitate spontaneous bone damage in naïve mice. METHODS: 3-month old naïve transgenic mice that carry the human SE-coding allele DRB1*04:01, or a SE-negative allele DRB1*04:02 were studied...
2016: RMD Open
https://www.readbyqxmd.com/read/27933060/regulators-of-tfh-cell-differentiation
#6
REVIEW
Gajendra M Jogdand, Suchitra Mohanty, Satish Devadas
The follicular helper T (Tfh) cells help is critical for activation of B cells, antibody class switching, and germinal center (GC) formation. The Tfh cells are characterized by the expression of CXC chemokine receptor 5 (CXCR5), ICOS, programed death 1 (PD-1), B cell lymphoma 6 (BCL-6), and IL-21. They are involved in clearing infections and are adversely linked with autoimmune diseases and also have a role in viral replication as well as clearance. On the one hand, Tfh cells are generated from naive CD4(+) T cells with sequential steps involving cytokine signaling (IL-21, IL-6, IL-12, activin A), migration, and positioning in the GC by CXCR5, surface receptors (ICOS/ICOSL, signaling lymphocyte activation molecule-associated protein/signaling lymphocyte activation molecule) as well as transcription factor (BCL-6, c-Maf, and signal transducer and activator of transcription 3) signaling and repressor miR155...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27867385/expanding-diversity-in-molecular-structures-and-functions-of-the-il-6-il-12-heterodimeric-cytokine-family
#7
REVIEW
Hideaki Hasegawa, Izuru Mizoguchi, Yukino Chiba, Mio Ohashi, Mingli Xu, Takayuki Yoshimoto
The interleukin (IL)-6/IL-12 family cytokines have pleiotropic functions and play critical roles in multiple immune responses. This cytokine family has very unique characteristics in that they comprise two distinct subunits forming a heterodimer and each cytokine and receptor subunit shares with each other. The members of this cytokine family are increasing; currently, there are more than six cytokines, including the tentatively named cytokines IL-Y (p28/p40), IL-12 (p35/p40), IL-23 (p19/p40), IL-27 [p28/Epstein-Barr virus-induced protein 3 (EBI3)], IL-35 (p35/EBI3), and IL-39 (p19/EBI3)...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27856660/effect-of-il-17-receptor-a-blockade-with-brodalumab-in-inflammatory-diseases
#8
REVIEW
Ajay Nirula, Jon Nilsen, Paul Klekotka, Greg Kricorian, Ngozi Erondu, Jennifer E Towne, Chris B Russell, David A Martin, Alison L Budelsky
IL-17 cytokines are expressed by a variety of cells and mediate host defence against extracellular pathogens. IL-17 is upregulated at sites of inflammation and can synergize with other cytokines, such as TNF-α, to amplify the inflammatory response. Activation of these signalling pathways has been hypothesized to contribute to the underlying pathogenesis of several inflammatory diseases, including psoriasis, RA, PsA and asthma. Thus the IL-17 signalling pathway is an attractive target for the development of therapeutic agents to modulate aberrant inflammatory responses...
December 2016: Rheumatology
https://www.readbyqxmd.com/read/27853420/reducing-peripheral-inflammation-with-infliximab-reduces-neuroinflammation-and-improves-cognition-in-rats-with-hepatic-encephalopathy
#9
Sherry Dadsetan, Tiziano Balzano, Jerónimo Forteza, Andrea Cabrera-Pastor, Lucas Taoro-Gonzalez, Vicente Hernandez-Rabaza, Sara Gil-Perotín, Laura Cubas-Núñez, José-Manuel García-Verdugo, Ana Agusti, Marta Llansola, Vicente Felipo
Inflammation contributes to cognitive impairment in patients with hepatic encephalopathy (HE). However, the process by which peripheral inflammation results in cognitive impairment remains unclear. In animal models, neuroinflammation and altered neurotransmission mediate cognitive impairment. Taking into account these data, we hypothesized that in rats with HE: (1) peripheral inflammation is a main contributor to neuroinflammation; (2) neuroinflammation in hippocampus impairs spatial learning by altering AMPA and/or NMDA receptors membrane expression; (3) reducing peripheral inflammation with infliximab (anti-TNF-a) would improve spatial learning; (4) this would be associated with reduced neuroinflammation and normalization of the membrane expression of glutamate receptors...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27769564/in-vivo-anti-inflammatory-activities-of-novel-cytokine-il-38-in-murphy-roths-large-mrl-lpr-mice
#10
Man Chu, Lai Shan Tam, Jing Zhu, Delong Jiao, De Hua Liu, Zhe Cai, Jie Dong, Christopher Wei Kai Lam, Chun Kwok Wong
The newly named interleukin (IL)-36 subfamily member IL-38 has been shown to exert anti-inflammatory activity. However, the in vivo immunomodulatory activity of IL-38 was poorly investigated in systemic lupus erythematosus (SLE). We have investigated the expression of CD4(+)IL-17(+) Th17, CD4(+)IFN-γ(+) Th1 and CD3(+)CD4(-)CD8(-) double negative (DN) T cells and the related immunopathological mechanisms in female MRL/lpr mice model of spontaneous lupus-like disease, with or without IL-38 treatment. Intravenous administration of murine recombinant IL-38 into MRL/lpr mice can ameliorate the lupus-like clinical symptoms including proteinuria, leukocyteuria and skin lesions...
October 17, 2016: Immunobiology
https://www.readbyqxmd.com/read/27744729/epigallocatechin-3-gallate-prevents-triptolide-induced-hepatic-injury-by-restoring-the-th17-treg-balance-in-mice
#11
Shu-Jing Yu, Rong Jiang, Ying Z Mazzu, Cai-Bing Wei, Zong-Liang Sun, Yu-Zhen Zhang, Lian-Di Zhou, Qi-Hui Zhang
Drug-induced liver injury (DILI) is the most common cause of acute liver failure. Disruption of the Th17/Treg balance can lead to hepatic inflammation, which causes the main symptoms of DILI. Here we investigate the protective mechanisms of (-)-Epigallocatechin-3-gallate (EGCG) on triptolide (TP)-induced DILI that shows the Th17/Treg imbalance. Pretreatment with EGCG (5[Formula: see text]mg/kg) for 10 days before TP (0.5[Formula: see text]mg/kg) administration in mice significantly reduced the increased alanine aminotransferase (ALT) level ([Formula: see text]) induced by TP treatment...
2016: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/27744141/effect-of-il-6-receptor-blockade-on-high-sensitivity-troponin-t-and-nt-probnp-in-rheumatoid-arthritis
#12
Paul Welsh, Katie Tuckwell, Iain B McInnes, Naveed Sattar
BACKGROUND AND AIMS: Observational associations between inflammation and cardiovascular disease are interesting, but randomised experimental data are lacking. We investigated the effect of the IL-6 receptor blocker tocilizumab on N terminal pro B type natriuretic peptide (NT-proBNP) and high sensitivity troponin T (hsTnT) in rheumatoid arthritis (RA) patients. METHODS: A post-hoc study was performed in a subset of patients with moderate to severe RA participating in a randomised controlled trial...
November 2016: Atherosclerosis
https://www.readbyqxmd.com/read/27733581/the-tnf-family-member-tl1a-induces-il-22-secretion-in-committed-human-th17-cells-via-il-9-induction
#13
Lisa S Thomas, Stephan R Targan, Masato Tsuda, Qi T Yu, Brenda C Salumbides, Talin Haritunians, Emebet Mengesha, Dermot P B McGovern, Kathrin S Michelsen
TL1A contributes to the pathogenesis of several chronic inflammatory diseases, including those of the bowel by enhancing TH1, TH17, and TH2 responses. TL1A mediates a strong costimulation of these TH subsets, particularly of mucosal CCR9(+) T cells. However, the signaling pathways that TL1A induces in different TH subsets are incompletely understood. We investigated the function of TL1A on human TH17 cells. TL1A, together with TGF-β, IL-6, and IL-23, enhanced the secretion of IL-17 and IFN-γ from human CD4(+) memory T cells...
October 12, 2016: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/27729335/interleukin-23-secreted-by-activated-macrophages-drives-%C3%AE-%C3%AE-t-cell-production-of-interleukin-17-to-aggravate-secondary-injury-after-intracerebral-hemorrhage
#14
Qi Zhong, Kai Zhou, Qiao-Li Liang, Sen Lin, Yan-Chun Wang, Xiao-Yi Xiong, Zhao-You Meng, Ting Zhao, Wen-Yao Zhu, Yuan-Rui Yang, Mao-Fan Liao, Qiu-Wen Gong, Liang Liu, Ao Xiong, Junwei Hao, Jian Wang, Qing-Wu Yang
BACKGROUND: Neuroinflammation plays a key role in intracerebral hemorrhage (ICH)-induced secondary brain injury, but the specific roles of peripheral inflammatory cells such as macrophages and lymphocytes remain unknown. The purpose of this study was to explore the roles of macrophages, T lymphocytes, and the cytokines they secrete as potential targets for treating secondary brain injury after ICH. METHODS AND RESULTS: Our results showed that peripheral macrophages and T lymphocytes successively infiltrated the brain, with macrophage counts peaking 1 day after ICH and T-lymphocyte counts peaking after 4 days...
October 11, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27726138/il4i1-key-immunoregulator-at-a-crossroads-of-divergent-t-cell-functions
#15
Sergio Romagnani
The interleukin (IL)-4-induced gene1 (IL4I1), which encodes the L-amino acid oxidase enzyme, plays an important immunoregulatory role. Indeed, this enzyme which is produced by B cells-including neoplastic B cells-dendritic cells and macrophages has been shown to inhibit proliferation, cytotoxicity and IFN-γ production by tumor-infiltrating CD8(+) T cells, thus favoring tumor escape. Moreover, the same gene has been found to be constitutively expressed by CD4(+) T helper 17 (Th17) cells, where it down-regulates cell proliferation through a reduction of CD3 chains expression in the T-cell receptor complex, thus impairing IL-2 production, and by maintaining in the same cells a high expression of Tob1, which inhibits cell cycle entry, through a still unknown mechanism...
October 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27723765/a-novel-nuclear-function-for-the-interleukin-17-signaling-adaptor-protein-act1
#16
Sharlene Velichko, Xu Zhou, Lingxiang Zhu, Johnathon David Anderson, Reen Wu, Yin Chen
In the context of the human airway, interleukin-17A (IL-17A) signaling is associated with severe inflammation, as well as protection against pathogenic infection, particularly at mucosal surfaces such as the airway. The intracellular molecule Act1 has been demonstrated to be an essential mediator of IL-17A signaling. In the cytoplasm, it serves as an adaptor protein, binding to both the intracellular domain of the IL-17 receptor as well as members of the canonical nuclear factor kappa B (NF-κB) pathway. It also has enzymatic activity, and serves as an E3 ubiquitin ligase...
2016: PloS One
https://www.readbyqxmd.com/read/27716212/anti-inflammatory-potential-of-pi3k%C3%AE-and-jak-inhibitors-in-asthma-patients
#17
Thomas Southworth, Jonathan Plumb, Vandana Gupta, James Pearson, Isabel Ramis, Martin D Lehner, Montserrat Miralpeix, Dave Singh
BACKGROUND: Phosphatidylinositol 3-kinase delta (PI3Kδ) and Janus-activated kinases (JAK) are both novel anti-inflammatory targets in asthma that affect lymphocyte activation. We have investigated the anti-inflammatory effects of PI3Kδ and JAK inhibition on cytokine release from asthma bronchoalveolar lavage (BAL) cells and T-cell activation, and measured lung PI3Kδ and JAK signalling pathway expression. METHOD: Cells isolated from asthma patients and healthy subjects were treated with PI3Kδ or JAK inhibitors, and/or dexamethasone, before T-cell receptor stimulation...
October 4, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27670221/advances-in-the-pathophysiology-of-primary-immune-thrombocytopenia
#18
María Perera, Teresa Garrido
OBJECTIVES: Classically, immune thrombocytopenia (ITP) was thought to be caused by the destruction and insufficient production of platelets, as mediated by autoantibodies. More recently other immune mechanisms that contribute to the disease have been discovered. This review attempts to address the main unresolved questions in ITP. METHODS: We review the most current knowledge of the pathophysiology of ITP. Immunological effects of available therapies are also described...
January 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/27649928/tlr3-preconditioning-enhances-the-therapeutic-efficacy-of-umbilical-cord-mesenchymal-stem-cells-in-tnbs-induced-colitis-via-the-tlr3-jagged-1-notch-1-pathway
#19
Y Qiu, J Guo, R Mao, K Chao, B-L Chen, Y He, Z-R Zeng, S-H Zhang, M-H Chen
Toll-like receptor-3 (TLR3) priming may enhance mesenchymal stem cell (MSC) immunosuppressive activity, but this mechanism has not been investigated in the context of inflammatory bowel disease. Thus, we assessed the immunosuppressive properties of TLR3-primed MSCs using a trinitrobenzene sulfonate (TNBS)-induced mouse model of colitis. Intraperitoneally injected polyribocytidylic acid (poly (I:C)- (a ligand of TLR3) primed human umbilical cord-derived MSCs (hUC-MSCs) migrated to the inflamed colon and effectively improved clinical and pathological manifestations in colitic mice compared with mice treated with unstimulated hUC-MSCs (UCMs)...
September 21, 2016: Mucosal Immunology
https://www.readbyqxmd.com/read/27630169/galectin-3-regulates-inflammasome-activation-in-cholestatic-liver-injury
#20
Jijing Tian, Guoxiang Yang, Huan-Yuan Chen, Daniel K Hsu, Alexey Tomilov, Kristin A Olson, Ali Dehnad, Sarah R Fish, Gino Cortopassi, Bin Zhao, Fu-Tong Liu, M Eric Gershwin, Natalie J Török, Joy X Jiang
Macrophage activation is an important feature of primary biliary cholangitis (PBC) pathogenesis and other cholestatic liver diseases. Galectin-3 (Gal3), a pleiotropic lectin, is produced by monocytic cells and macrophages. However, its role in PBC has not been addressed. We hypothesized that Gal3 is a key to induce NOD-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome in macrophages and in turn to propagate proinflammatory IL-17 signaling. In liver tissues from patients with PBC and dnTGF-βRII mice, a model of autoimmune cholangitis, the expression of Gal3, NLRP3, and the adaptor protein adaptor apoptosis-associated speck-like protein was induced, with the downstream activation of caspase-1 and IL-1β...
December 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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