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https://www.readbyqxmd.com/read/29054602/stat1-gain-of-function-and-stat3-loss-of-function-mutations-impair-il-17-and-il-22-immunity-associated-with-cmc
#1
Julia Hiller, Beate Hagl, Renate Effner, Anne Puel, Martin Schaller, Birgit Mascher, Stefanie Eyerich, Kilian Eyerich, Annette F Jansson, Johannes Ring, Jean-Laurent Casanova, Ellen D Renner, Claudia Traidl-Hoffmann
No abstract text is available yet for this article.
October 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29054368/an-intermediate-level-of-cd161-expression-defines-a-novel-activated-inflammatory-and-pathogenic-subset-of-cd8-t-cells-involved-in-multiple-sclerosis
#2
Bryan Nicol, Marion Salou, Isabel Vogel, Alexandra Garcia, Emilie Dugast, Jeremy Morille, Stéphanie Kilens, Eric Charpentier, Audrey Donnart, Steven Nedellec, Marylène Jacq-Foucher, Fabienne Le Frère, Sandrine Wiertlewski, Arnaud Bourreille, Sophie Brouard, Laure Michel, Laurent David, Pierre-Antoine Gourraud, Nicolas Degauque, Arnaud B Nicot, Laureline Berthelot, David-Axel Laplaud
Several lines of evidence support a key role for CD8(+) T cells in central nervous system tissue damage of patients with multiple sclerosis. However, the precise phenotype of the circulating CD8(+) T cells that may be recruited from the peripheral blood to invade the CNS remains largely undefined to date. It has been suggested that IL-17 secreting CD8 (Tc17) T cells may be involved, and in humans these cells are characterized by the expression of CD161. We focused our study on a unique and recently described subset of CD8 T cells characterized by an intermediate expression of CD161 as its role in neuroinflammation has not been investigated to date...
October 17, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29053834/effect-of-feed-supplementation-with-zinc-glycine-chelate-and-zinc-sulfate-on-cytokine-and-immunoglobulin-gene-expression-profiles-in-chicken-intestinal-tissue
#3
L Jarosz, A Marek, Z Gradzki, M Kwiecien, B Zylinska, B Kaczmarek
The aim of the study was to evaluate the effect of inorganic and organic forms of Zn on the expression of cytokines (IL-2, TNF-α, IFN-γ, IL-12, IL-17, IL-4, IL-10, and TGF-β) and immunoglobulins (IgA and IgG) in the tissues of the small intestine (jejunum and ileum) of broiler chickens. In the experiment, 90 broiler chickens were divided into 4 experimental groups and a control group, with 18 birds each. The birds received Zn supplements in inorganic form with and without phytase (ZnSO4 and ZnSO4 + F), and in organic form with glycine, with and without phytase (Zn-Gly and Zn-Gly + F)...
October 5, 2017: Poultry Science
https://www.readbyqxmd.com/read/29052125/differences-in-innate-ifn%C3%AE-and-il-17-responses-to-bordetella-pertussis-between-balb-c-and-c57bl-6-mice-role-of-%C3%AE-%C3%AE-t-cells-nk-cells-and-dendritic-cells
#4
Yung-Yi C Mosley, Fangjia Lu, Harm HogenEsch
Cell-mediated immune responses characterized by the secretion of IFNγ and IL-17 play an important role in the immune response to Bordetella pertussis (B. pertussis). We investigated innate sources of IFNγ and IL-17 upon stimulation of spleen cells from BALB/c (B/c) and C57BL/6 (B6) mice with heat-killed B. pertussis (hkBp). Spleen cells from B/c mice secreted less IFNγ and more IL-17 than those from B6 mice. Innate IFNγ was produced predominantly by NK cells in B/c mice and by CD8 T cells and NK cells in B6 mice...
October 19, 2017: Immunologic Research
https://www.readbyqxmd.com/read/29050459/third-party-regulatory-t-cells-prevent-murine-acute-graft-versus-host-disease
#5
Jung-Yeon Lim, Keon-Il Im, Yunejin Song, Nayoun Kim, Young-Sun Nam, Young-Woo Jeon, Seok-Goo Cho
Background/Aims: Adoptive therapy with regulatory T (Treg) cells to prevent graft-versus-host disease (GVHD) would benefit from a strategy to improve homing to the sites of inflammation following hematopoietic stem cell transplantation (HSCT). Although donor-derived Treg cells have mainly been used in these models, third-party-derived Treg cells are a promising alternative for cell-based immunotherapy, as they can be screened for pathogens and cell activity, and banked for GVHD prevention...
October 19, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29049348/chronic-administration-of-fluoxetine-and-pro-inflammatory-cytokine-change-in-a-rat-model-of-depression
#6
Yanxia Lu, Cyrus S Ho, Xin Liu, Anna N Chua, Wei Wang, Roger S McIntyre, Roger C Ho
This study evaluated the chronic effects of fluoxetine, a commonly prescribed SSRI antidepressant, on the peripheral and central levels of inflammatory cytokines including IL-1β, IL-6, TNF-α and IL-17 over a 4-interval in a rat model of chronic mild stress (CMS) which resembles the human experience of depression. Twenty-four Sprague-Dawley rats were randomly assigned to CMS+vehicle (n = 9), CMS+fluoxetine (n = 9) and the control (n = 6) groups. Sucrose preference and forced swim tests were performed to assess behavioral change...
2017: PloS One
https://www.readbyqxmd.com/read/29048509/plasma-but-not-cerebrospinal-fluid-interleukin-7-and-interleukin-5-levels-pre-antiretroviral-therapy-commencement-predict-cryptococcosis-associated-immune-reconstitution-inflammatory-syndrome
#7
Ngomu Akeem Akilimali, Christina C Chang, Daniel M Muema, Tarylee Reddy, Mahomed-Yunus S Moosa, Sharon R Lewin, Martyn A French, Thumbi Ndung'u
Background: Patients with human immunodeficiency virus/AIDS-associated cryptococcal meningitis (CM) frequently experience clinical deterioration, known as cryptococcosis-associated immune reconstitution inflammatory syndrome (C-IRIS), upon initiation of antiretroviral therapy (ART). The immunological mechanisms underlying C-IRIS are incompletely defined and no reliable predictive biomarkers exist. We investigated whether plasma or cerebrospinal fluid (CSF) levels of cytokines and chemokines predicted C-IRIS and are potential predictive biomarkers...
October 16, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29046306/a-novel-yeast-based-therapeutic-vaccine-for-tuberculosis-gi-19007
#8
Thomas H King, Crystal A Shanley, Zhimin Guo, Donald Bellgrau, Timothy Rodell, Synthia Furney, Marcela Henao-Tamayo, Ian M Orme
As yet, very few vaccine candidates with activity in animals against Mycobacterium tuberculosis infection have been tested as therapeutic "post-exposure" vaccines. We recently described two pools of mycobacterial proteins with this activity and here we describe further studies in which four of these proteins (Rv1738, Rv2032, Rv3130, and Rv3841) were generated as a fusion polypeptide, and then delivered in a novel yeast-based platform ("Tarmogen®") which itself has immunostimulatory properties including activation of Toll-like receptors...
October 18, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/29046031/-innate-lymphoid-cells-and-their-role-in-immune-response-regulation
#9
Bibiana Patricia Ruiz-Sánchez, David Cruz-Zárate, Iris Estrada-García, Isabel Wong-Baeza
Innate lymphoid cells (ILCs) are lymphocytes lacking antigen recognition receptors and become activated in response to cytokines and through microbe-associated molecular pattern (MAMP) receptors. ILCs are found mainly in mucosal tissues and participate in the immune response against infections and in chronic inflammatory conditions. ILCs are divided in ILC-1, ILC-2 and ILC-3, and these cells have analogue functions to those of immune adaptive response lymphocytes Th1, Th2 and Th17. ILC-1 express T-bet, produce IFNγ, protect against infections with intracellular microorganisms and are related to inflammatory bowel disease immunopathology...
July 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/29044226/bone-marrow-transplant-induced-alterations-in-notch-signaling-promote-pathologic-th17-responses-to-%C3%AE-herpesvirus-infection
#10
S J Gurczynski, X Zhou, M Flaherty, C A Wilke, B B Moore
Idiopathic pneumonia syndrome (IPS) is a common, often fatal, complication following hematopoietic stem cell transplantation (HSCT) characterized by severe pneumonitis and interstitial fibrosis. Fully reconstituted syngeneic bone marrow transplant (BMT) mice infected with murine γ-herpesvirus-68 develop interleukin-17 (IL-17)-driven pneumonitis and fibrosis, which mimics clinical manifestations of IPS. We found CD103+ and CD11b+ dendritic cells (DCs) are selectively deficient for the Notch ligand, DLL4, following BMT and CD4+ T cells isolated from lungs and spleens of infected BMT mice display Notch signaling defects...
October 18, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29043884/guselkumab-for-psoriasis-a-critical-appraisal-of-phase-iii-studies
#11
Zenas Zn Yiu, Richard B Warren
Biologic therapies have raised the frontiers of accepted treatment efficacy for severe psoriasis. Guselkumab is an IgG1 monoclonal antibody that binds to the p19 subunit and inhibits IL-23. In three Phase III randomized, active comparator and placebo controlled trials, guselkumab demonstrated superior efficacy and a comparable safety profile when assessed against adalimumab and ustekinumab. Critical appraisal highlighted uncertainties over risk of bias from missing details in the trial publications that would be overcome with the provision of accompanying trial protocols, as well as the need for a head-to-head trial against an IL-17 inhibitor...
October 18, 2017: Immunotherapy
https://www.readbyqxmd.com/read/29042990/changes-of-treg-and-th17-cells-as-well-as-cytokines-in-children-with-acute-bronchitis
#12
Zhiqiang Tu, Haiyan Xue, Wei Chen, Lanfang Cao, Weiqi Zhang
The present study aimed to investigate changes of T-regulatory (Treg) and T-helper (Th)17 cells as well as cytokines in peripheral blood of children with acute bronchitis, and to explore the roles of these cells in the pathogenesis of acute bronchitis. A total of 126 children who had presented at Renji Hospital (Shanghai, China) with acute bronchitis were selected as the observation group and 30 healthy children were selected as the control group. Th17/Tregs in the peripheral blood of the children of the observation group and the control group was detected by flow cytometry...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042954/dexmedetomidine-ameliorates-the-inflammatory-immune-response-in-rats-with-acute-kidney-damage
#13
Weihua Liu, Wenli Yu, Yiqi Weng, Yongwang Wang, Mingwei Sheng
It has been demonstrated that dexmedetomidine (Dex) can protect patients with acute kidney injury from experiencing further tissue damage, however its mechanism of action remains unclear. The present study investigated the immune modulatory functions of Dex in rats with acute kidney injury (AKI) induced via injection of lipopolysaccharide into the tail vein. ELISA analysis showed that Dex reduced the levels of inflammatory cytokines in rats with AKI in a dose dependent manner. Furthermore, the regulatory effects of Dex on cytokine production disappeared when the α-2 adrenergic receptor antagonist Yohimbine (YOH) was added...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29040945/quercetin-protects-mouse-liver-against-triptolide-induced-hepatic-injury-by-restoring-th17-treg-balance-through-tim-3-and-tlr4-myd88-nf-%C3%AE%C2%BAb-pathway
#14
Cai-Bing Wei, Kun Tao, Rong Jiang, Lian-Di Zhou, Qi-Hui Zhang, Chun-Su Yuan
Triptolide (TP) is a diterpene triepoxide with various biological activities, but its clinical applications have been limited by potential hepatotoxicity, which can be attributed to T helper 17 (Th17)/T regulatory (Treg) cell imbalance. Quercetin (QE), a natural flavonoid, has been reported to have many benefits and medicinal properties, including hepatoprotective activity against TP-induced liver injury. However, the hepatoprotection mechanisms have not been clarified. The present study was designed to explore the protective effect and the mechanism of QE against TP-induced liver injury...
October 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29040756/tcdd-ficz-and-other-high-affinity-ahr-ligands-dose-dependently-determine-the-fate-of-cd4-t-cell-differentiation
#15
Allison K Ehrlich, Jamie M Pennington, William H Bisson, Siva K Kolluri, Nancy I Kerkvliet
FICZ and TCDD, two high affinity AhR ligands, are reported to have opposite effects on T cell differentiation with TCDD inducing regulatory T cells and FICZ inducing Th17 cells. This dichotomy has been attributed to ligand-intrinsic differences in AhR activation, although differences in sensitivity to metabolism complicates the issue. TCDD is resistant to AhR-induced metabolism and produces sustained AhR activation following a single dose in the μg/kg range while FICZ is rapidly metabolized and AhR activation is transient...
October 13, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29040753/what-is-the-best-treatment-target-in-axial-spondyloarthritis-tumour-necrosis-factor-%C3%AE-interleukin-17-or-both
#16
Denis Poddubnyy, Joachim Sieper
After about 15 years of experience with the TNF blockers as the only effective drugs in axial spondyloarthritis patients who fail conventional treatment, for the first time we see now that another targeted therapy, the inhibition of IL-17, is also effective. By indirect comparison of the treatment effect between the two types of drugs, efficacy seems to be on a similar level. This raises quite a few important questions that are related to both pathogenesis and treatment strategies for which the answers are currently largely unknown, but would be of great relevance for optimizing therapies...
October 12, 2017: Rheumatology
https://www.readbyqxmd.com/read/29040636/vt-1161-protects-mice-against-oropharyngeal-candidiasis-caused-by-fluconazole-susceptible-and-resistant-candida-albicans
#17
Timothy J Break, Jigar V Desai, Mukil Natarajan, Elise M N Ferre, Christina Henderson, Adrian M Zelazny, Ulrich Siebenlist, William J Hoekstra, Robert J Schotzinger, Edward P Garvey, Michail S Lionakis
Background: Candida albicans, the most common human fungal pathogen, causes chronic mucosal infections in patients with inborn errors of IL-17 immunity that rely heavily on chronic, often lifelong, azole antifungal agents for treatment. However, a rise in azole resistance has predicated a need for developing new antifungal drugs. Objectives: To test the in vitro and in vivo efficacy of VT-1161 and VT-1129 in the treatment of oropharyngeal candidiasis with azole-susceptible or -resistant C...
October 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29039484/mir%C3%A2-203-contributes-to-il%C3%A2-17%C3%A2-induced-vegf-secretion-by-targeting-socs3-in-keratinocytes
#18
Yuanyuan Xu, Yongzhi Ji, Xiaoou Lan, Xinghua Gao, Hong-Duo Chen, Long Geng
Interleukin (IL)-17 signaling serves an important role in the development and pathogenesis of psoriasis; a chronic skin disease characterized by increased dermal vascularity and the hyperproliferation of keratinocytes. microRNA (miR)‑203 is preferentially expressed in the skin and is an important regulator of keratinocyte differentiation. miR‑203 has been implicated in a number of skin diseases, including psoriasis. However, the role of miR‑203 in IL‑17‑induced vascular endothelial growth factor (VEGF) secretion has yet to be elucidated...
October 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039449/crosstalk-between-tlr2-and-sphk1-in-microglia-in-the-cerebral-ischemia-reperfusion-induced-inflammatory-response
#19
Wei Sun, Zhaoming Ding, Shengjie Xu, Zhiqiang Su, Hulun Li
Stroke is associated with high morbidity and mortality, and much remains unknown about the injury-related mechanisms that occur following reperfusion. This study aimed to explore the roles of Toll-like receptor 2 (TLR2) and sphingosine kinase 1 (Sphk1) in microglial cells in inflammatory responses induced by cerebral ischemia/reperfusion (I/R). For this purpose, C57BL/6 mice were randomly divided into 4 groups as follows: the sham-operated group, the I/R group, the I/R group treated with TLR2 antibody, and the I/R group treated with N,N-dimethylsphingosine...
September 29, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29036304/il-1r-and-myd88-signaling-in-cd4-t-cells-promote-th17-immunity-and-atherosclerosis
#20
Daniel Engelbertsen, Sara Rattik, Maria Wigren, Jenifer Vallejo, Goran Marinkovic, Alexandru Schiopu, Harry Björkbacka, Jan Nilsson, Eva Bengtsson
Aims: The role of CD4+ T cells in atherosclerosis has been shown to be dependent on cytokine cues that regulate lineage commitment into mature T helper subsets. In this study we tested the roles of IL-1R1 and MyD88 signaling in CD4+ T cells in atherosclerosis. Methods and results: We transferred apoe-/-myd88+/+or apoe-/-myd88-/- CD4+ T cells to T- and B-cell-deficient rag1-/-apoe-/- mice fed high fat diet. Mice given apoe-/-myd88-/- CD4+ T cells exhibited reduced atherosclerosis compared to mice given apoe-/-myd88+/+ CD4+ T cells...
September 28, 2017: Cardiovascular Research
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