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IL-17 cytokines

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https://www.readbyqxmd.com/read/28088699/procyanidin-b2-gallates-inhibit-ifn-%C3%AE-and-il-17-production-in-t-cells-by-suppressing-t-bet-and-ror%C3%AE-t-expression
#1
Sachi Tanaka, Kanon Furuya, Kana Yamamoto, Kazuki Yamada, Mikihiro Ichikawa, Manato Suda, Hidefumi Makabe
Procyanidins are widely found in plants and have anti-inflammatory activities. Procyanidin B2 (PCB2) inhibits production of proinflammatory cytokines in macrophages. However, there has been no study that has attempted to determine the effects of PCB2 gallates on T cell functions. In the present study, murine splenocytes were isolated and treated with PCB2 or PCB2 gallates in the presence of an anti-CD3 monoclonal antibody (mAb). PCB2 gallates, but not PCB2, inhibited proliferation and T cell activation of splenocytes after stimulation with the anti-CD3 mAb...
January 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28088614/ccaat-enhancer-binding-protein-%C3%AE-promotes-pathogenesis-of-eae
#2
Michelle R Simpson-Abelson, Gerard Hernandez-Mir, Erin E Childs, J Agustin Cruz, Amanda C Poholek, Ansuman Chattopadhyay, Sarah L Gaffen, Mandy J McGeachy
The CCAAT/Enhancer Binding Protein β (C/EBPβ) transcription factor is activated by multiple inflammatory stimuli, including IL-17 and LPS, and C/EBPβ itself regulates numerous genes involved in inflammation. However, the role of C/EBPβ in driving autoimmunity is not well understood. Here, we demonstrate that Cebpb(-/-) mice are resistant to EAE. Cebpb(-/-) mice exhibited reduced lymphocyte and APC infiltration into CNS following EAE induction. Furthermore, MOG-induced Th17 cytokine production was impaired in draining LN, indicating defects in Th17 cell priming...
January 12, 2017: Cytokine
https://www.readbyqxmd.com/read/28087077/alteration-of-cd39-foxp3-cd4-t-cell-and-cytokine-levels-in-eae-ms-following-anti-cd52-treatment
#3
Anudeep B Pant, Yan Wang, Daniel W Mielcarz, Eli J Kasper, Kiel M Telesford, Megan Mishra, Azizul Haque, Jacqueline Smith, Lloyd H Kasper, Sakhina Begum-Haque
While examining the therapeutic value of anti-CD52 antibody against EAE/MS, we identified a unique subset of CD39+ Tregs in repopulating GALT tissues, a major lymphoid reservoir, which was accompanied by amelioration of disease. Furthermore, anti-CD52 treatment leads to increased expression of BDNF, IL-10, and SMAD3 in the brains of EAE mice. This condition is associated with suppression of IL-17, a critical inflammatory factor in EAE/MS progression. Additionally, we found elevated levels of CD4+CD39+ Tregs in PBMCs of RRMS patients treated with humanized anti-CD52 mAb...
December 21, 2016: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28081037/higher-cd163-levels-are-associated-with-insulin-resistance-in-hepatitis-c-virus-infected-and-hiv-infected-adults
#4
Michael Reid, Yifei Ma, Rebecca Scherzer, Jennifer C Price, Audrey L French, Michael W Plankey, Carl Grunfeld, Phyllis C Tien
OBJECTIVES: HIV/hepatitis C virus (HCV) coinfection is associated with insulin resistance, but the mechanism is unclear. We hypothesized that intestinal epithelial damage and the consequent monocyte/macrophage activation and inflammation explain this perturbation. DESIGN: Cross-sectional study of 519 adults (220 HIV+/HCV-; 64 HIV-/HCV+; 89 HIV+/HCV+; 146 HIV-/HCV-). METHODS: We used multivariable linear regression to evaluate associations of HIV and HCV with the homeostasis model assessment of insulin resistance (HOMA-IR) and if intestinal fatty (FA) acid binding protein (I-FABP, a marker of gut epithelial integrity), soluble CD14 (sCD14) and soluble CD163 (sCD163) (markers of monocyte/macrophage activation), and IL-6 (an inflammatory cytokine) mediated this association...
January 28, 2017: AIDS
https://www.readbyqxmd.com/read/28078840/mast-cell-and-cancer-with-special-emphasis-on-il-37-an-anti-inflammatory-and-inhibitor-of-innate-immunity-new-frontiers
#5
F Carinci, G Lessiani, E Spinas, S K Kritas, G Ronconi, Al Caraffa, P Conti
Mast cells (MCs) are mediators of allergy and inflammation and participate in the growth of cancer cells. MCs can promote both neoangiogenesis and tumor growth. They increase in the stroma of certain tumors where they can be recruited by tumor-derived chemoattractants, such as monocyte chemotactic protein-1 (MCP-1), RANTES and stem cell factor (SCF) to selectively secrete inflammatory molecules including chemical mediators and cytokines (TNF, IL-6 and IL-1). However, MC differentiation pathways and heterogeneity in cancer are still poorly understood...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078715/mtorc2-regulates-multiple-aspects-of-nkt-cell-development-and-function
#6
Tammarah Sklarz, Peng Guan, Mercy Gohil, Renee M Cotton, Moyar Q Ge, Angela Haczku, Rupali Das, Martha S Jordan
Invariant NKT (iNKT) cells bridge innate and adaptive immunity by rapidly secreting cytokines and lysing targets following TCR recognition of lipid antigens. Based on their ability to secrete IFN-γ, IL-4 and IL-17A, iNKT-cells are classified as NKT-1, NKT-2 and NKT-17 subsets, respectively. The molecular pathways regulating iNKT-cell fate are not fully defined. Recent studies implicate Rictor, a required component of mTORC2, in the development of select iNKT-cell subsets, however these reports are conflicting...
January 12, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28075473/spirulina-lipopolysaccharides-inhibit-tumor-growth-in-a-toll-like-receptor-4-dependent-manner-by-altering-the-cytokine-milieu-from-interleukin-17-interleukin-23-to-interferon-%C3%AE
#7
Hiromi Okuyama, Akira Tominaga, Satoshi Fukuoka, Takahiro Taguchi, Yutaka Kusumoto, Shiro Ono
Th17 cells and the cytokine they produce, interleukin (IL)-17, play an important role in tumor progression in humans and in mice. IL-6 and IL-23 are critical cytokines for the differentiation and propagation of Th17 cells, respectively. Bacterial lipopolysaccharides (LPS) are known to stimulate immune cells to produce such inflammatory cytokines. Contrary to Escherichia coli (E. coli) LPS, LPS from Spirulina has low toxicity and barely induces in vivo production of IL-6 and IL-23 in mice. We examined the antitumor effects of Spirulina LPS compared to E...
January 2, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28074676/potential-route-of-th17-treg-cell-dynamics-in-targeting-type-1-diabetes-and-rheumatoid-arthritis-an-autoimmune-disorder-perspective
#8
Suresh Kumar Karri, A Sheela
Cytokines, small secreted proteins, have a specific effect on the interactions and communications between cells. They play a pivotal role in the pathogenesis of autoimmune diseases. Factors in the breakdown of self-tolerance and the subsequent events leading to the induction of pathogenic responses remain unclear for most of the autoimmune diseases. Large numbers of studies have revealed a general scheme in which pro-inflammatory cytokines contribute to the initiation and propagation of autoimmune inflammation, whereas anti-inflammatory cytokines facilitate the regression of inflammation and thereby recovery from the disease...
January 11, 2017: British Journal of Biomedical Science
https://www.readbyqxmd.com/read/28074436/intrafollicular-inflammatory-cytokines-but-not-steroid-hormone-concentrations-are-increased-in-naturally-matured-follicles-of-women-with-proven-endometriosis
#9
Gengxiang Wu, N A Bersinger, M D Mueller, M von Wolff
PURPOSE: The aim of this study was to assess whether the intrafollicular cytokine profile in naturally developed follicles is different in women with endometriosis, possibly explaining the lower reproductive outcome in endometriosis patients. METHODS: A matched case-control study was conducted at a university-based infertility and endometriosis centre. The study population included 17 patients with laparoscopically and histologically confirmed endometriosis (rAFS stages II-IV), each undergoing one natural cycle IVF (NC-IVF) treatment cycle between 2013 and 2015, and 17 age-matched NC-IVF women without diagnosed endometriosis (control group)...
January 10, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28068297/fatty-acid-derivative-chemokine-and-cytokine-profiles-in-exhaled-breath-condensates-can-differentiate-adult-and-children-paucibacillary-tuberculosis-patients
#10
Sergio Fabián Mosquera-Restrepo, Ana Cecilia Caro, Luis F García, Carlos Alberto Peláez-Jaramillo, Mauricio Rojas
The anti-mycobacterial immune response in adults and children with tuberculosis (TB), as well as the response in bacteriologically positive and negative patients, is different. However, knowledge of the immunological events occurring in the lungs in these clinical situations remains scarce. Exhaled breath condensate (EBC) samples may be useful for studying the inflammatory environment of the lower airways in TB patients. The fatty acid, cytokine, and chemokine profiles in EBC from healthy adults; smear-positive and smear-negative adult patients; and healthy, asthmatic, and TB children were determined using gas chromatography and LUMINEX, respectively...
January 9, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28067803/regulation-of-viral-replication-apoptosis-and-pro-inflammatory-responses-by-17-aag-during-chikungunya-virus-infection-in-macrophages
#11
Tapas K Nayak, Prabhudutta Mamidi, Abhishek Kumar, Laishram Pradeep K Singh, Subhransu S Sahoo, Soma Chattopadhyay, Subhasis Chattopadhyay
Chikungunya virus (CHIKV) infection has re-emerged as a major public health concern due to its recent worldwide epidemics and lack of control measures. Although CHIKV is known to infect macrophages, regulation of CHIKV replication, apoptosis and immune responses towards macrophages are not well understood. Accordingly, the Raw264.7 cells, a mouse macrophage cell line, were infected with CHIKV and viral replication as well as new viral progeny release was assessed by flow cytometry and plaque assay, respectively...
January 6, 2017: Viruses
https://www.readbyqxmd.com/read/28067070/warfarin-affects-acute-inflammatory-response-induced-by-subcutaneous-polyvinyl-sponge-implantation-in-rats
#12
Ivana Mirkov, Aleksandra Popov, Jelena Demenesku, Marina Ninkov, Dina Mileusnic, Dragan Kataranovski, Milena Kataranovski
PURPOSE: Warfarin (WF) is anticoagulant which also affects physiological processes other than hemostasis. Our previous investigations showed the effect of WF which gained access to the organism via skin on resting peripheral blood granulocytes. Based on these data, the aim of the present study was to examine whether WF could modulate the inflammatory processes as well. To this aim the effect of warfarin on the inflammatory response induced by subcutaneous sponge implantation in rats was examined...
January 8, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28065853/sitagliptin-inhibit-human-lymphocytes-proliferation-and-th1-th17-differentiation-in-vitro
#13
Marcelo Maia Pinheiro, Caroline Lais Stoppa, Claudete Justina Valduga, Cristina Eunice Okuyama, Renata Gorjão, Regina Mara Silva Pereira, Susana Nogueira Diniz
Dipeptidyl peptidase-4 (DPP-4) inhibitors are a new class of anti-diabetic agents that are widely used in clinical practice to improve glycemic control in patients with type 2 diabetes. DPP-4 is also known as lymphocyte cell surface protein, CD26, and plays an important role in T-cell immunity. Recent studies suggest that DPP-4 inhibitors improve beta-cell function and attenuate autoimmunity in type 1 diabetic mouse models. To investigate the direct effect of DPP4 in immune response, human peripheral blood mononuclear cells (PBMC) from healthy volunteers were obtained by Ficoll gradient and cultivated in the absence (control) or presence of phytohemagglutinin (PHA), or stimulated with PHA and treated with sitagliptin...
January 5, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28065580/fatigue-favors-in-vitro-th1-and-th17-like-cell-expansion-and-reduces-corticoid-sensitivity-in-ms-patients
#14
Hélcio Alvarenga-Filho, Marisa Salles, Joana Hygino, Thais B Ferreira, Priscila M Sacramento, Clarice Monteiro, Claudia Cristina F Vasconcelos, Regina Maria Papais Alvarenga, Cleonice A M Bento
Fatigue is a common "ghost" symptom in patients with multiple sclerosis (MS), an autoimmune disease mediated by T cells that target myelin antigens of the central nervous system. As fatigue has been associated with inflammatory states, its occurrence may negatively impact MS progression. The aim of this study was to evaluate the impact of fatigue on the cytokine profile of patients with relapsing-remitting (RR) MS. For our study, blood were collected from MS patients in clinical remission phase with (n=15) and without (n=15) fatigue...
December 30, 2016: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28063251/perivascular-adipose-tissue-inflammation-in-vascular-disease
#15
REVIEW
Ryszard Nosalski, Tomasz J Guzik
Perivascular adipose tissue (PVAT) plays a critical role in the pathogenesis of cardiovascular disease. In vascular pathologies perivascular adipose tissue increases in volume and becomes dysfunctional, with altered cellular composition and molecular characteristics. PVAT dysfunction is characterized by its inflammatory character, oxidative stress, diminished production of vaso-protective adipocyte derived relaxing factors (ADRFs) and increased production of paracrine factors such as resistin, leptin, cytokines (IL-6, TNF-α) and chemokines (RANTES, MCP-1)...
January 7, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28062289/evaluation-of-p2x7-receptor-expression-in-peripheral-lymphocytes-and-immune-profile-from-patients-with-indeterminate-form-of-chagas-disease
#16
Viviane do Carmo Gonçalves Souza, Joabel Tonellotto Dos Santos, Fernanda Licker Cabral, Fernanda Barbisan, Maria Isabel Azevedo, Luiz Felipe Dias Carli, Sonia de Avila Botton, Jeandre Augusto Dos Santos Jaques, Daniela Bitencourt Rosa Leal
Chagas disease (CD) is caused by Trypanosoma cruzi, an intracellular protozoan which is a potent stimulator of cell-mediated immunity. In the indeterminate form of CD (IFCD) a modulation between pro- and anti-inflammatory responses establishes a host-parasite adaptation. It was previously demonstrated that purinergic ecto-enzymes regulates extracellular ATP and adenosine levels, influencing immune and inflammatory processes during IFCD. In inflammatory sites ATP, as well as its degradation product, adenosine, function as signaling molecules and immunoregulators through the activation of purinergic receptors...
January 3, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28061954/multiple-cytokine-responses-in-discriminating-between-active-tuberculosis-and-latent-tuberculosis-infection
#17
Jing Wu, Sen Wang, Chanyi Lu, Lingyun Shao, Yan Gao, Zumo Zhou, Heqing Huang, Ying Zhang, Wenhong Zhang
BACKGROUND: Cytokines play an important role in cell-mediated immune responses against Mycobacterium tuberculosis (Mtb) infection. Cytokine profile specifically associated with active tuberculosis (ATB) patients, subjects with latent tuberculosis infection (LTBI) and non-infected individuals remains to be determined. METHODS: We enrolled a total of 92 subjects including patients with ATB (n = 25), LTBI (n = 36) and healthy controls (HC, n = 31) to investigate the cytokine production by peripheral blood mononuclear cells after Mtb purified protein derivative (PPD) stimulation which was evaluated by a beads-based multiplex assay system...
January 2017: Tuberculosis
https://www.readbyqxmd.com/read/28061755/high-serum-resistin-associates-with-intrahepatic-inflammation-and-necrosis-an-index-of-disease-severity-for-patients-with-chronic-hbv-infection
#18
Zhongji Meng, Yonghong Zhang, Zhiqiang Wei, Ping Liu, Jian Kang, Yinhua Zhang, Deqiang Ma, Changzheng Ke, Yue Chen, Jie Luo, Zuojiong Gong
BACKGROUND: Studies have revealed that resistin plays a role as an intrahepatic cytokine with proinflammatory activities. This study investigated the association between serum resistin and fibrosis severity and the possible marker role of resistin in the inflammatory process of chronic hepatitis B. METHODS: In this study, 234 subjects with HBV infection were retrospectively selected, including 85 patients with chronic hepatitis B (CHB), 70 patients with HBV-related liver cirrhosis (LC-B), and 79 patients with HBV-related liver failure (LF-B)...
January 7, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28060820/proteolytic-origin-of-the-soluble-human-il-6r-in-vivo-and-a-decisive-role-of-n-glycosylation
#19
Steffen Riethmueller, Prasath Somasundaram, Johanna C Ehlers, Chien-Wen Hung, Charlotte M Flynn, Juliane Lokau, Maria Agthe, Stefan Düsterhöft, Yijue Zhu, Joachim Grötzinger, Inken Lorenzen, Tomas Koudelka, Kosuke Yamamoto, Ute Pickhinke, Rielana Wichert, Christoph Becker-Pauly, Marisa Rädisch, Alexander Albrecht, Markus Hessefort, Dominik Stahnke, Carlo Unverzagt, Stefan Rose-John, Andreas Tholey, Christoph Garbers
Signaling of the cytokine interleukin-6 (IL-6) via its soluble IL-6 receptor (sIL-6R) is responsible for the proinflammatory properties of IL-6 and constitutes an attractive therapeutic target, but how the sIL-6R is generated in vivo remains largely unclear. Here, we use liquid chromatography-mass spectrometry to identify an sIL-6R form in human serum that originates from proteolytic cleavage, map its cleavage site between Pro-355 and Val-356, and determine the occupancy of all O- and N-glycosylation sites of the human sIL-6R...
January 2017: PLoS Biology
https://www.readbyqxmd.com/read/28056393/increased-expression-of-negative-regulators-of-cytokine-signaling-during-chronic-hiv-disease-cause-functionally-exhausted-state-of-dendritic-cells
#20
Meenakshi Sachdeva, Aman Sharma, Sunil K Arora
Mechanisms of functional impairment of dendritic cells (DCs) during chronic HIV-1 infection are not well understood. In order to understand this phenomenon, we aimed to study the expression of negative regulators of cytokine signaling and correlate with DC exhaustion during chronic HIV-1 disease. Monocyte-derived DCs (mo-DCs) from 27 HIV-1 infected patients (CD4+ T-cell counts: 429±44 cells/μL, plasma viral load: Log103.9±1.0copies/ml) and 19 healthy controls (HCs) were stimulated ex vivo with TLR4 agonist, lipopolysaccharide (LPS) for 2days to evaluate their functional fitness...
January 2, 2017: Cytokine
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