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https://www.readbyqxmd.com/read/28526351/docosahexaenoyl-serotonin-emerges-as-most-potent-inhibitor-of-il-17-and-ccl-20-released-by-blood-mononuclear-cells-from-a-series-of-n-acyl-serotonins-identified-in-human-intestinal-tissue
#1
Ya Wang, Michiel G J Balvers, Henk F J Hendriks, Tessa Wilpshaar, Tjarda van Heek, Renger F Witkamp, Jocelijn Meijerink
Fatty acid amides (FAAs), conjugates of fatty acids with ethanolamine, mono-amine neurotransmitters or amino acids are a class of molecules that display diverse functional roles in different cells and tissues. Recently we reported that one of the serotonin-fatty acid conjugates, docosahexaenoyl serotonin (DHA-5-HT), previously found in gut tissue of mouse and pig, attenuates the IL-23-IL-17 signaling axis in LPS-stimulated mice macrophages. However, its presence and effects in humans remained to be elucidated...
May 16, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28511289/human-enthesis-group-3-innate-lymphoid-cells
#2
Richard J Cuthbert, Evangelos M Fragkakis, Robert Dunsmuir, Zhi Li, Mark Coles, Helena Marzo-Ortega, Peter Giannoudis, Elena Jones, Yasser M El-Sherbiny, Dennis McGonagle
Objective Group 3 innate lymphoid cells (ILC3s) play a pivotal role in barrier tissues such as the gut and the skin, two important sites of disease in spondyloarthropathy (SpA). It was investigated whether normal and injured human enthesis, the key target tissue in early SpA, harboured ILC3s in entheseal soft tissue (EST) and adjacent peri-entheseal bone (PEB). Methods Interspinous ligament and spinous process bone was collected from donors with no systemic inflammatory disease, enzymatically digested and immunophenotyped...
May 16, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28499587/the-phosphodiesterase-4-inhibitor-apremilast-inhibits-th1-but-promotes-th17-responses-induced-by-6-sulfo-lacnac-slan-dendritic-cells
#3
Stephanie Oehrl, Hridayesh Prakash, Annette Ebling, Nina Trenkler, Priscila Wölbing, Anja Kunze, Thomas Döbel, Marc Schmitz, Alexander Enk, Knut Schäkel
BACKGROUND: The phosphodiesterase 4 (PDE4) inhibitor apremilast increases cellular cAMP levels and has proven effective in the treatment of psoriasis and psoriasis arthritis. We recently described 6-sulfo LacNAc dendritic cells (slanDCs) as immature DCs in blood and as a subset of inflammatory dermal DCs in psoriasis with a pronounced capacity to produce proinflammatory cytokines and to program Th17/Th1 T cell responses. OBJECTIVE: The aim of this study was to investigate possible immune regulatory effects of the PDE4 inhibitor apremilast on slanDCs...
April 20, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28497028/inactive-gingipains-from-p-gingivalis-selectively-skews-t-cells-toward-a-th17-phenotype-in-an-il-6-dependent-manner
#4
Izabela Glowczyk, Alicia Wong, Barbara Potempa, Olena Babyak, Maciej Lech, Richard J Lamont, Jan Potempa, Joanna Koziel
Gingipain cysteine proteases are considered key virulence factors of Porphyromonas gingivalis. They significantly influence antibacterial and homeostatic functions of macrophages, neutrophils, the complement system, and cytokine networks. Recent data indicate the role of P. gingivalis in T cell differentiation; however, the involvement of gingipains in this process remains elusive. Therefore, the aim of this study was to investigate the contribution of danger signals triggered by the gingipains on the generation of Th17 cells, which play a key role in protection against bacterial diseases but may cause chronic inflammation and bone resorption...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28496315/hydrogen-coadministration-slows-the-development-of-copd-like-lung-disease-in-a-cigarette-smoke-induced-rat-model
#5
Xiaoyu Liu, Cuiqing Ma, Xiaoyu Wang, Wenjing Wang, Zhu Li, Xiansheng Wang, Pengyu Wang, Wuzhuang Sun, Baojian Xue
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a progressive pulmonary disease caused by harmful gases or particles. Recent studies have shown that 2% hydrogen or hydrogen water is effective in the treatment and prevention of a variety of diseases. This study investigated the beneficial effects and the possible mechanisms of different hydrogen concentrations on COPD. METHODS: A rat COPD model was established through smoke exposure methods, and inhalation of different concentrations of hydrogen was used as the intervention...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28487598/potential-hepatoprotective-role-of-galectin-3-during-hcv-infection-in-end-stage-renal-disease-patients
#6
Ruzica Lukic, Nevena Gajovic, Ivan Jovanovic, Milena Jurisevic, Zeljko Mijailovic, Veljko Maric, Biljana Popovska Jovicic, Nebojsa Arsenijevic
Hepatitis C virus infection (HCV), one of the greatest causes of liver disease, is a frequent complication in patients with end-stage renal disease (ESRD) on dialysis. ESRD is defined as decreased glomerular filtration and also accompanied by impaired function of the immune system. Galectin-3 is a β-galactoside-binding lectin, involved in various biological processes including pathogenesis of chronic renal disease. The aim of our study was to estimate disease severity in ESRD HCV(+) patients and analyze the serum concentrations of IL-1β, IL-4, IL-23, and IL-6; anti-HCV antibodies; and galectin-3...
2017: Disease Markers
https://www.readbyqxmd.com/read/28477192/flow-cytometric-assessment-of-stat-molecules-in-th9-cells
#7
Lucien P Garo, Vanessa Beynon, Gopal Murugaiyan
IL-9-producing Th9 cells are a novel subset of T helper cells that develop independently of other T helper subsets. Th9 cells have been implicated in the pathogenesis of allergic asthma and autoimmunity, while also serving as critical effector T cells in mediating antitumor immune responses. Concomitant presence of TGF-β and IL-4 lead to the differentiation of naïve CD4(+) T cells towards the Th9 phenotype. In addition, several cytokines, including IL-1β, IL-2, IL-25, and IL-33, further amplify Th9 responses...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28472775/ocular-behcet-s-disease-is-associated-with-aberrant-methylation-of-interferon-regulatory-factor-8-irf8-in-monocyte-derived-dendritic-cells
#8
Yiguo Qiu, Yunyun Zhu, Hongsong Yu, Shenglan Yi, Wencheng Su, Qingfeng Cao, Gangxiang Yuan, Aize Kijlstra, Peizeng Yang
Aberrant methylation of interferon regulatory factor 8 (IRF8) has been noted in various tumors. IRF8 has also been reported to be involved in many autoimmune diseases, including Behcet's disease (BD). However, the methylation status of IRF8 in BD has not been reported. To address this issue, we investigated whether the degree of methylation of IRF8 in dendritic cells (DCs) plays a role in the development of BD. We found a lower mRNA expression and a higher methylation level of IRF8 in active ocular BD patients as compared to normal subjects and inactive patients...
April 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28469254/immune-checkpoint-protein-vista-critically-regulates-the-il-23-il-17-inflammatory-axis
#9
Na Li, Wenwen Xu, Ying Yuan, Natarajan Ayithan, Yasutomo Imai, Xuesong Wu, Halli Miller, Michael Olson, Yunfeng Feng, Yina H Huang, Mary Jo Turk, Samuel T Hwang, Subramaniam Malarkannan, Li Wang
V-domain Immunoglobulin Suppressor of T cell Activation (VISTA) is an inhibitory immune-checkpoint molecule that suppresses CD4(+) and CD8(+) T cell activation when expressed on antigen-presenting cells. Vsir (-/-) mice developed loss of peripheral tolerance and multi-organ chronic inflammatory phenotypes. Vsir (-/-) CD4(+) and CD8(+) T cells were hyper-responsive towards self- and foreign antigens. Whether or not VISTA regulates innate immunity is unknown. Using a murine model of psoriasis induced by TLR7 agonist imiquimod (IMQ), we show that VISTA deficiency exacerbated psoriasiform inflammation...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28464025/pams-ameliorates-the-imiquimod-induced-psoriasis-like-skin-disease-in-mice-by-inhibition-of-translocation-of-nf-%C3%AE%C2%BAb-and-production-of-inflammatory-cytokines
#10
Rongkun Dou, Zongying Liu, Xue Yuan, Danzhou Xiangfei, Ruixue Bai, Zhenfei Bi, Piao Yang, Yalan Yang, Yinsong Dong, Wei Su, Diqiang Li, Canquan Mao
Psoriasis is a chronic and persistent inflammatory skin disease seriously affecting the quality of human life. In this study, we reported an ancient formula of Chinese folk medicine, the natural plant antimicrobial solution (PAMs) for its anti-inflammatory effects and proposed the primary mechanisms on inhibiting the inflammatory response in TNF-α/IFN-γ-induced HaCaT cells and imiquimod-induced psoriasis-like skin disease mouse model. Two main functional components of hydroxysafflor Yellow A and allantoin in PAMs were quantified by HPLC to be 94...
2017: PloS One
https://www.readbyqxmd.com/read/28463086/vitamin-d-counteracts-an-il-23-dependent-il-17a-ifn%C3%AE-response-driven-by-urban-particulate-matter
#11
Elizabeth H Mann, Tzer-Ren Ho, Paul E Pfeffer, Nick C Matthews, Elfy Chevretton, Ian Mudway, Frank J Kelly, Catherine M Hawrylowicz
Urban particulate matter (UPM) air pollution and vitamin D deficiency are detrimentally associated with respiratory health; this is hypothesised to be due in part to regulation of IL-17A, which UPM is reported to promote. Here we use a myeloid (m)DC-memory CD4+ T cell co-culture system to characterize UPM-driven IL-17A+ cells, investigate the mechanism by which UPM-primed DCs promote this phenotype and address evidence for cross-regulation by vitamin D. CD1c+ mDCs were cultured overnight with or without a reference source of UPM and/or active vitamin D (1,25(OH)2D3) before co-culturing with autologous memory CD4+ T cells...
May 2, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28461763/emerging-targeted-therapies-for-plaque-psoriasis-impact-of-ixekizumab
#12
REVIEW
Tiana Kazemi, Benjamin Farahnik, John Koo, Kourosh Beroukhim
BACKGROUND: Recent studies into the pathogenesis of psoriasis have identified the importance of interleukin 17 (IL-17) in disease activity and have thus provided a new target for biologic therapy. Ixekizumab, the most recent US Food and Drug Administration (FDA)-approved anti-IL-17 biologic agent, appears to be a promising medication for patients suffering from moderate-to-severe plaque psoriasis. METHODS: We reviewed the results of phase III trials for ixekizumab in order to assess the efficacy, safety, and impact on quality of life of this agent in the treatment of plaque psoriasis...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28461524/basic-and-translational-science-a-report-from-the-grappa-2016-annual-meeting
#13
James G Krueger, Bruce Kirkham, Christopher T Ritchlin
Rapid advances in effective treatments for psoriasis and psoriatic arthritis (PsA) have emerged from improved understanding of cell subsets and critical mediators that promote tissue inflammation and destruction. More specifically, increased knowledge of innate immunity and the important involvement of cytokines in the interleukin (IL)-23-IL-17 axis as key mediators of psoriatic plaque and joint inflammation in both psoriasis and PsA have led to new theories of immunopathogenesis. Herein we summarize recent discussions on IL-17-related pathways and their relationship to psoriasis and PsA...
May 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28460549/pharmacokinetic-drug-evaluation-of-brodalumab-for-the-treatment-of-psoriasis
#14
M Galluzzo, M Talamonti, S D'adamio, L Bianchi
Psoriasis is now understood to also be under the driving influence of the IL-17/IL-23 axis, and the medical breakthrough of novel IL-17 inhibitor medications signals a paradigm shift in the way psoriatic patients are managed medically. Brodalumab, a fully human Chinese hamster ovary cell-derived immunoglobulin G2 (IgG2) anti-IL-17RA monoclonal antibody, is currently the most-developed treatment that binds to the IL-17RA. The authors review and provide updates of efficacy and safety by several studies on brodalumab...
May 9, 2017: Expert Opinion on Drug Metabolism & Toxicology
https://www.readbyqxmd.com/read/28454345/high-il-17-expression-is-associated-with-an-unfavorable-prognosis-in-thyroid-cancer
#15
Denise Faria Galano Carvalho, Bruna Riedo Zanetti, Lydianne Miranda, Marcela Kazue Hassumi-Fukasawa, Fabiana Miranda-Camargo, Janaína Cristiana Oliveira Crispim, Edson Garcia Soares
Previous studies have indicated that cancer may be promoted and/or exacerbated by inflammation and infection. The cytokines produced by activated innate immune cells that stimulate tumor growth and progression are considered as important components in this process. The interleukin (IL)-23/T helper (Th)17 axis, which exerts marked pro-inflammatory effects, has emerged as an important mediator in inflammation-associated cancer. Increasing clinical evidence indicates that Th17 may promote or inhibit tumor progression, however, the function of Th17 in the pathogenesis of benign and malignant thyroid neoplasms remains unclear...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28452232/genetic-polymorphisms-of-il-23r-rs7517847-and-lep-rs7799039-among-egyptian-patients-with-hepatocellular-carcinoma
#16
Tahani Amer, Rizk El-Baz, Abdel-Rahman Mokhtar, Saad El-Shaer, Rami Elshazli, Ahmad Settin
BACKGROUND: Genetic polymorphisms of IL-23 R (rs7517847) and LEP (rs7799039) have been stated to be associated with various types of human cancers. The purpose of this work is to test the association of these genetic polymorphisms with hepatocellular carcinoma (HCC) among Egyptian patients. SUBJECTS AND METHODS: This study involved 150 unrelated Egyptian HCC patients in addition to 100 healthy controls from the same locality. DNA was genotyped for these genetic polymorphisms using the PCR-RFLP technique...
April 28, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28450854/microbial-disease-spectrum-linked-to-a-novel-il-12r%C3%AE-1-n-terminal-signal-peptide-stop-gain-homozygous-mutation-with-paradoxical-receptor-cell-surface-expression
#17
Thais Louvain de Souza, Regina C de Souza Campos Fernandes, Juliana Azevedo da Silva, Vladimir Gomes Alves Júnior, Adelia Gomes Coelho, Afonso C Souza Faria, Nabia M Moreira Salomão Simão, João T Souto Filho, Caroline Deswarte, Stéphanie Boisson-Dupuis, Dara Torgerson, Jean-Laurent Casanova, Jacinta Bustamante, Enrique Medina-Acosta
Patients with Mendelian Susceptibility to Mycobacterial Diseases (MSMD) exhibit variable vulnerability to infections by mycobacteria and other intramacrophagic bacteria (e.g., Salmonella and Klebsiella) and fungi (e.g., Histoplasma, Candida, Paracoccidioides, Coccidioides, and Cryptococcus). The hallmark of MSMD is the inherited impaired production of interferon gamma (IFN-γ) or the lack of response to it. Mutations in the interleukin (IL)-12 receptor subunit beta 1 (IL12RB1) gene accounts for 38% of cases of MSMD...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28449862/innate-lymphoid-cells-in-atherosclerosis
#18
Daniel Engelbertsen, Andrew H Lichtman
The family of innate lymphoid cells (ILCs) consisting of NK cells, lymphoid tissue inducer cells and the 'helper'-like ILC subsets ILC1, ILC2 and ILC3 have been shown to have important roles in protection against microbes, regulation of inflammatory diseases and involved in allergic reactions. ILC1s produce IFN-γ upon stimulation with IL-12 and IL-18, ILC2s produce IL-5 and IL-13 responding to IL-33 and IL-25 while ILC3s produce IL-17 and IL-22 after stimulation with IL-23 or IL-1. Although few studies have directly investigated the role for ILCs in atherosclerosis, several studies have investigated transcription factors and cytokines shared by ILCs and T helper cells...
April 25, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28448060/small-rna-transfection-in-primary-human-th17-cells-by-next-generation-electroporation
#19
Misty M Montoya, K Mark Ansel
CD4(+) T cells can differentiate into several subsets of effector T helper cells depending on the surrounding cytokine milieu. Th17 cells can be generated from naïve CD4(+) T cells in vitro by activating them in the presence of the polarizing cytokines IL-1β, IL-6, IL-23, and TGFβ. Th17 cells orchestrate immunity against extracellular bacteria and fungi, but their aberrant activity has also been associated with several autoimmune and inflammatory diseases. Th17 cells are identified by the chemokine receptor CCR6 and defined by their master transcription factor, RORγt, and characteristic effector cytokine, IL-17A...
April 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28445259/the-role-of-stat3-and-ahr-in-the-differentiation-of-cd4-t-cells-into-th17-and-treg-cells
#20
Xingxing Liu, Hui Hu, Heng Fan, Dongmei Zuo, Zhexing Shou, Yi Liao, Zhen Nan, Qing Tang
BACKGROUND: This study aimed to investigate the role of aryl hydrocarbon receptor (AhR) and STAT3 gene during the differentiation of cluster of differentiation (CD)4 T cells into T helper (Th)17 and T regulatory (Treg) cells. METHODS: First, CD4 T cells were isolated from the spleen of BALB/c mice. Then, stable CD4 T cells expressing STAT3 shRNA were constructed. CD4 T cells were assigned to one of the following treatments: Th17 group: antibodies against CD3 and CD28, 2...
April 2017: Medicine (Baltimore)
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