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IL 17 receptor B

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https://www.readbyqxmd.com/read/28424593/phospholipase-a2-of-peroxiredoxin-6-plays-a-critical-role-in-cerebral-ischemia-reperfusion-inflammatory-injury
#1
Yu Shanshan, Jiang Beibei, Tan Li, Gao Minna, Lei Shipeng, Peng Li, Zhao Yong
Microglia-mediated inflammation is an important step in the progression of cerebral ischemia/reperfusion injury and the associated production of receptors of immunomoudulation, including Toll-like receptors (TLRs). Peroxiredoxin 6 (Prdx6) has been demonstrated as the endogenous antioxidant protein for its peroxidase properties. However, the role of the independent phospholipase A2 (iPLA2) activity of Prdx6 in stroke has not been well studied. In this study, we evaluated whether blocking the calcium-iPLA2 activity of Prdx6 using siRNA and inhibitors (1-hexadecyl-3-(trifluoroethgl)-sn-glycerol-2 phosphomethanol, MJ33) would have a critical effect on inflammatory brain damage...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28421819/il-4-induces-the-il17rb-gene-transcription-in-monocytic-cells-with-coordinate-autocrine-il-25-signaling
#2
Nathaniel M Weathington, Shreya S Kanth, Qiaoke Gong, James Londino, Akihiko Hoji, Mauricio Rojas, John Trudeau, Sally Wenzel, Rama K Mallampalli
IL-25 and IL-4 signaling in the setting of infection or allergic responses can drive Type 2 inflammation. IL-25 requires the IL-17 receptor B (IL-17Rb) to mediate signaling through nuclear factor kappa B transcriptional activation. Despite the known coexistence of these two cytokines in the Type 2 inflammatory environment, collaborative signaling between the IL-4 and IL-25 axes is poorly explored. Here we demonstrate IL-4 induction of both IL-25 and IL-17Rb protein in human lung tissue culture, primary alveolar macrophages, and the THP-1 monocytic cell line...
April 19, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28415830/triptolide-mitigates-radiation-induced-pneumonitis-via-inhibition-of-alveolar-macrophages-and-related-inflammatory-molecules
#3
Chun Chen, Shanmin Yang, Mei Zhang, Zhenhuan Zhang, Steven B Zhang, Bing Wu, Jinsheng Hong, Weijian Zhang, Jianhua Lin, Paul Okunieff, Lurong Zhang
Ionizing radiation-induced pulmonary injury is a major limitation of radiotherapy for thoracic tumors. We have demonstrated that triptolide (TPL) could alleviate IR-induced pneumonia and pulmonary fibrosis. In this study, we explored the underlying mechanism by which TPL mitigates the effects of radiotoxicity. The results showed that:(1) Alveolar macrophages (AMs) were the primary inflammatory cells infiltrating irradiated lung tissues and were maintained at a high level for at least 17 days, which TPL could reduce by inhibiting of the production of macrophage inflammatory protein-2 (MIP-2) and its receptor CXCR2...
March 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414140/shear-stress-inhibits-il-17a-mediated-induction-of-osteoclastogenesis-via-osteocyte-pathways
#4
Chongshan Liao, Tianfan Cheng, Shuai Wang, Chengfei Zhang, Lijian Jin, Yanqi Yang
Interleukin (IL)-17 is crucial to osteoclast differentiation and activation. Osteocytes support osteoclast formation and are thought to orchestrate bone remodeling in response to fluid flow. The contribution of IL-17 to osteocyte-related bone resorption remains unclear. Here, we used the osteocyte-like MLO-Y4 cell line to examine the role of IL-17 and fluid flow in osteoclastogenesis. It was the first time to demonstrate that IL-17A promoted MLO-Y4 cell proliferation, enhanced expression of receptor activator of nuclear factor κ-B ligand (RANKL) and tumor necrosis factor-α (TNF-α), and induced osteoclastogenesis when MLO-Y4 cells were co-cultured with bone marrow-derived macrophage (BMM) cells...
April 14, 2017: Bone
https://www.readbyqxmd.com/read/28380520/the-addition-of-protein-bound-amino-acids-in-low-protein-diets-improves-the-metabolic-and-immunological-characteristics-in-fifteen-to-thirty-five-kg-pigs
#5
L Q Che, X Peng, L Hu, C Wu, Q Xu, Z F Fang, Y Lin, S Y Xu, J Li, B Feng, G Tian, R N Zhang, H Sun, D Wu, D W Chen
This study was to evaluate the effects of supplementation of AA form (crystalline vs. protein bound) in low-protein diets on growth, metabolic, and immunological characteristics of pigs. A total of 80 barrows (PIC 327 × 1050; 15.57 ± 0.13 kg BW and 48 ± 2 d of age), housed in 4 pigs per pen with 5 pens per treatment, were assigned to 4 dietary treatments of 17, 15, and 13% CP and 13% CP plus casein for 28 d. The crystalline AA were supplemented to meet the requirement of indispensable AA in pigs. Results showed that pigs fed the 13% CP diet or the 13% CP plus casein diet had lower ( < 0...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28373650/vitamin-d3-inhibits-micro-rna-17-92-to-promote-specific-immunotherapy-in-allergic-rhinitis
#6
Zhi-Jian Yu, Lu Zeng, Xiang-Qian Luo, Xiao-Rui Geng, Rui Xu, Kun Chen, Gui Yang, Xi Luo, Zhi-Qiang Liu, Zhi-Gang Liu, Da-Bo Liu, Ping-Chang Yang, Hua-Bin Li
It is recognized that T helper 2 (Th2) polarization plays a critical role in a large number of immune disorders. Yet, the remedies for reconciling the established Th2 polarization are still limited currently. Published data indicate that micro RNA-17-92 cluster is associated with the skewed immune response; 25 vitamin D3 (VD3) can regulate multiple bioactivities in the body. This study tests a hypothesis that VD3 facilitates the effect of specific immunotherapy (SIT) on Th2 response. We observed that treatment with either SIT or VD3 alleviated AR symptoms as well as reduced serum levels of specific IgE and T helper (Th) 2 cytokines, suppressed miR-19a (one of the members of the miR-17-92 cluster) and increased IL-10 in peripheral B cells, which was further improved in those AR patients treated with both SIT and VD3...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28356385/rgc-32-promotes-th17-cell-differentiation-and-enhances-experimental-autoimmune-encephalomyelitis
#7
Violeta Rus, Vinh Nguyen, Alexandru Tatomir, Jason R Lees, Armugam P Mekala, Dallas Boodhoo, Cosmin A Tegla, Irina G Luzina, Paul A Antony, Cornelia D Cudrici, Tudor C Badea, Horea G Rus
Th17 cells play a critical role in autoimmune diseases, including multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis. Response gene to complement (RGC)-32 is a cell cycle regulator and a downstream target of TGF-β that mediates its profibrotic activity. In this study, we report that RGC-32 is preferentially upregulated during Th17 cell differentiation. RGC-32(-/-) mice have normal Th1, Th2, and regulatory T cell differentiation but show defective Th17 differentiation in vitro...
March 29, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28341898/functional-block-of-il-17-cytokine-promotes-bone-healing-by-augmenting-foxo1-and-atf4-activity-in-cortical-bone-defect-model
#8
M Dixit, K B Singh, R Prakash, D Singh
We determine the effect of interleukin (IL)-17 neutralizing antibody on new bone regeneration. Anti-IL-17 antibody promoted new bone regeneration in cortical bone defect model by augmenting FOXO1 and ATF4 activity thereby decreasing oxidative stress. Our study demonstrates the bone healing and regeneration potential of neutralizing IL-17antibody in osteoporotic fractures. INTRODUCTION: The immune system plays important role in the fracture healing process. However, fracture healing is prolonged in disorders associated with systemic inflammation...
March 24, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28319123/saccharomyces-boulardii-and-bacillus-subtilis-b10-modulate-tlrs-and-cytokines-expression-patterns-in-jejunum-and-ileum-of-broilers
#9
Imran Rashid Rajput, Huang Ying, Sun Yajing, Muhammad Asif Arain, Li Weifen, Li Ping, Dost Muhammad Bloch, Liu Wenhua
The present study was designed to evaluate the effects of Saccharomyces boulardii (Sb) and Bacillus subtilis B10 (Bs) on intestinal epithelial Toll like receptors (TLR), and Cytokine expression response to understand the intestinal epithelial innate immune mechanism in broilers. A total of 300 birds (Sanhuang broilers) were allotted into three groups (n = 100) and each divided into five replications (n = 20). Control group (Ctr) birds were fed basal diet, broilers in experimental groups received (1×108cfu/kg feed) Sb and Bs respectively in addition to basal diet for 72 days...
2017: PloS One
https://www.readbyqxmd.com/read/28294424/therapeutic-regulation-of-systemic-inflammation-in-xenograft-recipients
#10
Hayato Iwase, Hong Liu, Tao Li, Zhongquiang Zhang, Bingsi Gao, Hidetaka Hara, Martin Wijkstrom, Cassandra Long, Ryan Saari, David Ayares, David K C Cooper, Mohamed B Ezzelarab
Inflammation is known to preclude tolerance after transplantation. We have previously shown that systemic inflammation in xenograft recipients (SIXR) precedes activation of coagulation in the absence of T cell responses. Accordingly, SIXR may amplify innate and adaptive immune responses against xenografts after pig-to-primate xenotransplantation, even with efficient immunosuppressive therapy. We evaluated the impact of anti-inflammatory agents on pro-inflammatory cytokines and chemokines in pig artery patch and heart xenograft recipients...
March 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28289409/mitochondrial-dna-activates-the-nlrp3-inflammasome-and-predisposes-to-type-1-diabetes-in-murine-model
#11
Daniela Carlos, Frederico R C Costa, Camila A Pereira, Fernanda A Rocha, Juliana N U Yaochite, Gabriela G Oliveira, Fernando S Carneiro, Rita C Tostes, Simone G Ramos, Dario S Zamboni, Niels O S Camara, Bernhard Ryffel, João S Silva
Although a correlation between polymorphisms of NOD-like receptor family-pyrin domain containing 3 (NLRP3) and predisposition to type 1 diabetes (T1D) has been identified, the potential function and activation of the NLRP3 inflammasome in T1D have not been clarified. The present study shows that non-obese diabetic mice exhibited increased NLRP3, and pro-IL-1β gene expression in pancreatic lymph nodes (PLNs). Similar increases in gene expression of NLRP3, apoptosis associated speck like protein (ASC) and pro-IL-1β were induced by multiple low doses of streptozotocin (STZ) in C57BL/6 mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28286938/n-acetyl-l-cysteine-controls-osteoclastogenesis-through-regulating-th17-differentiation-and-rankl-in-rheumatoid-arthritis
#12
Hae-Rim Kim, Kyoung-Woon Kim, Bo-Mi Kim, Kyung-Ann Lee, Sang-Heon Lee
Background/Aims: This study aimed to determine the regulatory role of N-acetyl-l-cysteine (NAC), an antioxidant, in interleukin 17 (IL-17)-induced osteoclast differentiation in rheumatoid arthritis (RA). Methods: After RA synovial fibroblasts were stimulated by IL-17, the expression and production of receptor activator of nuclear factor κ-B ligand (RANKL) was determined by real-time polymerase chain reaction and enzyme-linked immunosorbent assay (ELISA). Osteoclastogenesis was also determined after co-cultures of IL-17-stimulated RA synovial fibroblasts, Th17 cells and various concentrations of NAC with monocytes...
March 13, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28284343/sphk1-mediates-neuroinflammation-and-neuronal-injury-via-traf2-nf-%C3%AE%C2%BAb-pathways-in-activated-microglia-in-cerebral-ischemia-reperfusion
#13
Danying Su, Yuefeng Cheng, Shi Li, Dawei Dai, Wei Zhang, Manhua Lv
Sphingosine kinase 1 (Sphk1), a key enzyme responsible for phosphorylating sphingosine into sphingosine1-phosphate (S1P), plays an important role in mediating post-stroke neuroinflammation. However, the pathway and mechanism of the Sphk1-mediated inflammatory response remains unknown. In this study, we found that suppression of Sphk1 decreased IL17 production and relieved neuronal damage induced by microglia in cerebral ischemia reperfusion (IR) or in an in vitro oxygen-glucose deprivation reperfusion (OGDR) system...
April 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28278201/the-symbiotic-bacterial-surface-factor-polysaccharide-a-on-bacteroides-fragilis-inhibits-il-1%C3%AE-induced-inflammation-in-human-fetal-enterocytes-via-toll-receptors-2-and-4
#14
Fei Jiang, Di Meng, Meiqian Weng, Weishu Zhu, Wenxue Wu, Dennis Kasper, W Allan Walker
Colonizing bacteria interacting with the immature, unlike the mature, human intestine favors inflammation over immune homeostasis. As a result, ten percent of premature infants under 1500 grams weight develop an inflammatory necrosis of the intestine after birth, e.g., necrotizing enterocolitis (NEC). NEC is a major health problem in this population causing extensive morbidity and mortality and an enormous expenditure of health care dollars. NEC can be prevented by giving preterm infants their mother's expressed breast milk or ingesting selective probiotic organisms...
2017: PloS One
https://www.readbyqxmd.com/read/28276465/cytochrome-p450s-in-human-immune-cells-regulate-il-22-and-c-kit-via-an-ahr-feedback-loop
#15
Renate Effner, Julia Hiller, Stefanie Eyerich, Claudia Traidl-Hoffmann, Knut Brockow, Massimo Triggiani, Heidrun Behrendt, Carsten B Schmidt-Weber, Jeroen T M Buters
The mechanisms how environmental compounds influence the human immune system are unknown. The environmentally sensitive transcription factor aryl hydrocarbon receptor (AHR) has immune-modulating functions and responds to small molecules. Cytochrome P4501 enzymes (CYP1) act downstream of the AHR and metabolize small molecules. However, it is currently unknown whether CYP1 activity is relevant for immune modulation. We studied the interdependence of CYP1 and AHR in human primary immune cells using pharmacological methods...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28273784/thymosin-%C3%AE-1-expands-deficient-il-10-producing-regulatory-b-cell-subsets-in-relapsing-remitting-multiple-sclerosis-patients
#16
Elena Giacomini, Fabiana Rizzo, Marilena P Etna, Melania Cruciani, Rosella Mechelli, Maria Chiara Buscarinu, Francesca Pica, Cartesio D'Agostini, Marco Salvetti, Eliana M Coccia, Martina Severa
BACKGROUND: B cells are key pathogenic effectors in multiple sclerosis (MS) and several therapies have been designed to restrain B cell abnormalities by directly targeting this lymphocyte population. OBJECTIVES: Moving from our data showing a Toll-like receptor (TLR)7-driven dysregulation of B cell response in relapsing-remitting multiple sclerosis (RRMS) and having found a low serum level of Thymosin-α1 (Tα1) in patients, we investigated whether the addition of this molecule to peripheral blood mononuclear cells (PBMCs) would influence the expansion of regulatory B cell subsets, known to dampen autoimmune inflammation...
February 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28245885/olive-oil-bioactive-compounds-increase-body-weight-and-improve-gut-health-and-integrity-in-gilthead-sea-bream-sparus-aurata
#17
Enric Gisbert, Karl B Andree, José C Quintela, Josep A Calduch-Giner, Ignacio R Ipharraguerre, Jaume Pérez-Sánchez
An olive oil bioactive extract (OBE) rich in bioactive compounds like polyphenols, triterpenic acids, long-chain fatty alcohols, unsaturated hydrocarbons, tocopherols and sterols was tested (0, 0·08, 0·17, 0·42 and 0·73 % OBE) in diets fed to sea bream (Sparus aurata) (initial weight: 5·4 (sd 1·2) g) during a 90-d trial (four replicates). Fish fed diets containing 0·17 and 0·42 % OBE were 5 % heavier (61·1 (sd 1·6) and 60·3 (sd 1·1) g, respectively) than those of the control group (57·0 (sd 0·7) g), although feed conversion ratio and specific feed intake did not vary...
March 1, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28240761/hepatocellular-carcinoma-and-cxcr3-chemokines-a-narrative-review
#18
E Giusy, F Poupak
Hepatocellular carcinoma (HCC) results from several factors like viral hepatitis infection [hepatitis B, or C (25%)] or occupational exposure. T-helper (Th)1 inflammatory cells, characterized by interferon (IFN)-γ and interleukin (IL)-2 secretion, predominate in the liver during chronic HCV infection, and chemokines attracting these cells are particularly important in disease progression. Among C-X-C chemokines, the non-ELR group [as IFN-γ-induced protein 10 (IP-10), monokine induced by IFN-γ (MIG) and IFN-inducible T-cell-alpha chemoattractant (I-TAC)], attracts Th1-cells interacting with chemokine C-X-C receptor (CXCR3)...
January 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28219889/rapid-and-rigorous-il-17a-production-by-a-distinct-subpopulation-of-effector-memory-t-lymphocytes-constitutes-a-novel-mechanism-of-toxic-shock-syndrome-immunopathology
#19
Peter A Szabo, Ankur Goswami, Delfina M Mazzuca, Kyoungok Kim, David B O'Gorman, David A Hess, Ian D Welch, Howard A Young, Bhagirath Singh, John K McCormick, S M Mansour Haeryfar
Toxic shock syndrome (TSS) is caused by staphylococcal and streptococcal superantigens (SAgs) that provoke a swift hyperinflammatory response typified by a cytokine storm. The precipitous decline in the host's clinical status and the lack of targeted therapies for TSS emphasize the need to identify key players of the storm's initial wave. Using a humanized mouse model of TSS and human cells, we herein demonstrate that SAgs elicit in vitro and in vivo IL-17A responses within hours. SAg-triggered human IL-17A production was characterized by remarkably high mRNA stability for this cytokine...
April 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28191009/defective-il-23-il-17-axis-protects-p47phox-mice-from-colon-cancer
#20
Cornelia Richter, Martina Herrero San Juan, Benno Weigmann, Dominik Bergis, Katrin Dauber, Michael H Muders, Gustavo B Baretton, Josef Martin Pfeilschifter, Halvard Bonig, Sebastian Brenner, Heinfried H Radeke
In the colon, a sophisticated balance between immune reaction and tolerance is absolutely required. Dysfunction may lead to pathologic phenotypes ranging from chronic inflammatory processes to cancer development. Two prominent modulators of colon inflammation are represented by the closely related cytokines interleukin (IL)-12 and IL-23, which initiate adaptive Th1 and Th17 immune responses, respectively. In this study, we investigated the impact of the NADPH oxidase protein p47phox, which negatively regulates IL-12 in dendritic cells, on colon cancer development in a colitis-associated colon cancer model...
2017: Frontiers in Immunology
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