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https://www.readbyqxmd.com/read/28617945/microrna-cluster-106a-363-is-involved-in-t-helper-17-th17-cell-differentiation
#1
Marc Kaestle, Sabine Bartel, Kerstin Geillinger-Kästle, Martin Irmler, Johannes Beckers, Bernhard Ryffel, Oliver Eickelberg, Susanne Krauss-Etschmann
T-helper cell 17 (Th17) mediated inflammation is associated with various diseases including autoimmune encephalitis, inflammatory bowel disease and lung diseases such as chronic obstructive pulmonary disease and asthma. Differentiation into distinct Th subtypes needs to be tightly regulated to ensure an immunological balance. As microRNAs (miRNAs) are critical regulators of signaling pathways, we aimed to identify specific miRNAs implicated in controlling Th17 differentiation. We were able to create a regulatory network model of murine Th cell differentiation by combining Affymetrix mRNA and miRNA arrays and in-silico analysis...
June 15, 2017: Immunology
https://www.readbyqxmd.com/read/28611508/correlation-between-il36%C3%AE-and-il17-and-activity-of-the-disease-in-selected-autoimmune-blistering-diseases
#2
Agnieszka Żebrowska, Anna Woźniacka, Katarzyna Juczyńska, Kamila Ociepa, Elżbieta Waszczykowska, Izabela Szymczak, Rafał Pawliczak
Dermatitis herpetiformis (DH), bullous pemphigoid (BP), and pemphigus vulgaris (PV) are autoimmune bullous skin conditions with eosinophilic and neutrophilic infiltrations. While cytokines are crucial for the affinity and activation of different leukocyte cells in the inflammation and blister formation, there are no studies concerning a role of IL-36. The goal of the study was to analyze whether interleukin 36 is involved in pathogenesis of DH, BP, and PV. And the second aim of the study was the estimation of correlation between Il-36 and IL-17 and titers of specific antibodies in these diseases...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28611056/igf1-potentiates-the-pro-inflammatory-response-in-human-peripheral-blood-mononuclear-cells-via-mapk
#3
Thalijn Liliana Catharina Wolters, Mihai Gheorghe Netea, Ad R Hermus, Jan Wa Smit, Romana T Netea-Maier
Introduction: Acromegaly is characterized by growth hormone (GH) and Insulin-like Growth Factor 1 (IGF1) excess and is accompanied by an increased cardiovascular diseases (CVD) risk. As innate immune responses are crucial in CVD development, and IGF1 is linked to subclinical inflammation, we hypothesized that GH/IGF1 excess contributes to CVD development via potentiating systemic inflammation. We aimed to assess the effects of GH/IGF1 on inflammatory cytokine production. Methods: Whole blood from acromegaly patients and healthy volunteers, and peripheral blood mononuclear cells (PBMC) from healthy volunteers were stimulated with Toll-like receptor (TLR) ligands, with or without adding GH or IGF1 (in PBMC)...
June 13, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28605874/the-pharmacological-efficacy-of-the-anti-il17-scfv-and-stnfr1-bispecific-fusion-protein-in-inflammation-mouse-stimulated-by-lps
#4
Yongbi Yang, Teng Zhang, Hongxue Cao, Dan Yu, Tong Zhang, Shaojuan Zhao, Xiaohui Jing, Liying Song, Yunye Liu, Ruixiang Che, Xin Liu, Deshan Li, Guiping Ren
Acute lung injury (ALI) is still a leading cause of morbidity and mortality in critically ill patients. Recently, our study found that a bispecific fusion protein treatment can ameliorate the lung injury induced by LPS. However, the molecular mechanisms which bispecific fusion protein ameliorates acute lung injury remain unclear. In this study, we found that the bispecific fusion protein treatment inhibited the nuclear transcription of NF-κB in confocal laser scanning fluorescence microscopy, the bispecific fusion protein exert protective effects in the cell model of ALI induced by lipopolysaccharide (LPS) via inhibiting the nuclear factor κB (NF-κB) signaling pathway and mediate inflammation...
June 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28602842/immune-responses-and-parasitological-observations-induced-during-probiotic-treatment-with-medicinal-trichuris-suis-ova-in-a-healthy-volunteer
#5
Andrew R Williams, Anders Dige, Tue Kruse Rasmussen, Christian L Hvas, Jens F Dahlerup, Lars Iversen, C Rune Stensvold, Jørgen Agnholt, Peter Nejsum
Ingestion of eggs (ova) of the porcine nematode parasite Trichuris suis (TSO) may reduce the severity of autoimmune disorders, however the development of TSO treatment as a useful therapy for autoimmune diseases is hampered by a lack of knowledge on the development of the parasite and the nature of the local immune responses in humans. Here, we used colonoscopy to investigate the development of T. suis and related mucosal and systemic immune responses during TSO treatment in an intestinally healthy male volunteer...
June 8, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28600817/il17a-dependent-asymmetric-stem-cell-divisions-are-increased-in-human-psoriasis-a-mechanism-underlying-benign-hyperproliferation
#6
Alexandra Charruyer, Stephen Fong, Giselle Vitcov, Samuel Sklar, Leah Tabernik, Monica Taneja, Melinda Caputo, Catherine Soeung, Lili Yue, Yoshi Uchida, Sarah T Arron, Karen Horton, Robert Foster, Shigetoshi Sano, Jeffrey North, Ruby Ghadially
The balance between asymmetric and symmetric stem cell (SC) divisions is key to tissue homeostasis and dysregulation of this balance has been shown in cancers. We hypothesized that the balance between asymmetric SC divisions (ACDs) and symmetric cell divisions (SCDs) would be dysregulated in the benign hyperproliferation of psoriasis. We found that, whereas SCDs were increased in squamous cell carcinoma (SCC) (human and murine), ACDs were increased in the benign hyperproliferation of psoriasis (human and murine)...
June 10, 2017: Stem Cells
https://www.readbyqxmd.com/read/28586386/differential-th17-response-induced-by-the-two-clades-of-the-pandemic-st258-klebsiella-pneumoniae-clonal-lineages-producing-kpc-type-carbapenemase
#7
Ann Maria Clemente, Giuseppe Castronovo, Alberto Antonelli, Marco Maria D'Andrea, Michele Tanturli, Eloisa Perissi, Sara Paccosi, Astrid Parenti, Federico Cozzolino, Gian Maria Rossolini, Maria Gabriella Torcia
The spread of KPC-type carbapenemases is mainly attributed to the global dissemination of Klebsiella pneumoniae (KP) strains belonging to the clonal group (CG) 258, including sequence type (ST) 258 and other related STs. Two distinct clades of CG258-KP have evolved, which differ mainly for the composition of their capsular polysaccharides, and recent studies indicate that clade 1 evolved from an ancestor of clade 2 by recombination of a genomic fragment carrying the capsular polysaccharide (cps) locus. In this paper, we investigated the ability of two ST258-KP strains, KKBO-1 and KK207-1, selected as representatives of ST258-KP clade 2 and clade 1, respectively, to activate an adaptive immune response using ex vivo-stimulation of PBMC from normal donors as an experimental model...
2017: PloS One
https://www.readbyqxmd.com/read/28583713/igf-1r-signalling-contributes-to-il-6-production-and-t-cell-dependent-inflammation-in-rheumatoid-arthritis
#8
Malin C Erlandsson, Sofia Töyrä Silfverswärd, Mitra Nadali, Minna Turkkila, Mattias N D Svensson, Ing-Marie Jonsson, Karin M E Andersson, Maria I Bokarewa
BACKGROUND: Signalling through insulin-like growth factor 1 receptor (IGF-1R) is essential for cell survival, but may turn pathogenic in uncontrolled tissue growth in tumours. In rheumatoid arthritis (RA), the IGF-1R signalling is activated and supports expansion of the inflamed synovia. AIM: In the present study, we assess if disruption of IGF-1R signalling resolves arthritis. MATERIAL AND METHODS: Clinical associations of IGF-1R expression in leukocytes of the peripheral blood were studied in 84 RA patients...
June 2, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28567040/a-unique-cellular-and-molecular-microenvironment-is-present-in-tertiary-lymphoid-organs-of-patients-with-spontaneous-prostate-cancer-regression
#9
María de la Luz García-Hernández, Norma Ofelia Uribe-Uribe, Ricardo Espinosa-González, W Martin Kast, Shabaana A Khader, Javier Rangel-Moreno
OBJECTIVE: Multiple solid cancers contain tertiary lymphoid organs (TLO). However, it is unclear whether they promote tumor rejection, facilitate tumor evasion, or simply whether they are a byproduct of chronic inflammation. We hypothesize that although chronic inflammation induces TLO formation, the tumor milieu can modulate TLO organization and functions in prostate cancer. Therefore, our study seeks to elucidate the cellular and molecular signatures in unique prostatectomy specimens from evanescent carcinoma patients to identify markers of cancer regression, which could be harnessed to modulate local immunosuppression or potentially enhance TLO function...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28559407/neutrophil-elastase-and-il17-expressed-in-the-pig-colon-during-brachyspira-hyodysenteriae-infection-synergistically-with-the-pathogen-induce-increased-mucus-transport-speed-and-production-via-mapk3
#10
Macarena P Quintana-Hayashi, Nazanin Navabi, Maxime Mahu, Vignesh Venkatakrishnan, Harvey R Fernandez, Freddy Haesebrouck, Frank Pasmans, Sara K Lindén
Brachyspira hyodysenteriae colonizes the pig colon resulting in mucoid hemorragic diarrhea and mucus layer changes. These changes are characterized by a disorganized mucus structure and a massive mucus induction with de novo expression of MUC5AC and increased production of MUC2. To investigate the mechanisms behind this altered mucin environment, we quantified the mRNA levels of mucin pathway genes and factors from the immune system in the colon of infected and control pigs, revealing upregulation of neutrophil elastase, SPDEF, FOXA3, MAPK3/ERK1, IL-17A, IL-1β, IL-6 and IL-8 expression...
May 30, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28555437/autoimmunity-in-2016
#11
REVIEW
Carlo Selmi
The number of peer-reviewed articles published during the 2016 solar year and retrieved using the "autoimmunity" key word remained stable while gaining a minimal edge among the immunology articles. Nonetheless, the quality of the publications has been rising significantly and, importantly, acquisitions have become available through scientific journals dedicated to immunology or autoimmunity. Major discoveries have been made in the fields of systemic lupus erythematosus, rheumatoid arthritis, autoimmunity of the central nervous system, vasculitis, and seronegative spondyloarthrithritides...
May 30, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28487695/regulatory-t-cells-and-pro-inflammatory-responses-predominate-in-children-with-tuberculosis
#12
Elizabeth Whittaker, Mark Nicol, Heather J Zar, Beate Kampmann
BACKGROUND: Following infection with Mycobacterium tuberculosis (M.tb), children are more susceptible to develop disease particularly extrapulmonary disease than adults. The exact mechanisms required for containment of M.tb are not known, but would be important to identify correlates of protection. OBJECTIVE: To comprehensively analyze key immune responses to mycobacteria between HIV-negative children with extrapulmonary TB (EPTB) compared to children with pulmonary TB (PTB) or healthy controls...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28483607/interleukin-17a-promotes-lung-tumor-progression-through-neutrophil-attraction-to-tumor-sites-and-mediating-resistance-to-pd-1-blockade
#13
Esra A Akbay, Shohei Koyama, Yan Liu, Ruben Dries, Lauren E Bufe, Michael Silkes, Md Maksudul Alam, Dillon M Magee, Robert Jones, Masahisa Jinushi, Meghana Kulkarni, Julian Carretero, Xiaoen Wang, Tiquella Warner-Hatten, Jillian D Cavanaugh, Akio Osa, Atsushi Kumanogoh, Gordon J Freeman, Mark M Awad, David C Christiani, Raphael Bueno, Peter S Hammerman, Glenn Dranoff, Kwok-Kin Wong
HYPOTHESIS: Proinflammatory cytokine Interleukin (IL)-17A (IL-17A) is overexpressed in a subset of patients with lung cancer. We hypothesized that IL-17A promotes a pro-tumorigenic inflammatory phenotype, and inhibits anti-tumor immune responses. EXPERIMENTAL DESIGN: We generated bi-transgenic mice expressing a conditional IL-17A allele along with conditional Kras(G12D) and performed immune phenotyping of mouse lungs, survival analysis, and treatment studies with antibodies either blocking PD-1 or IL6, or depleting neutrophils...
May 5, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28481289/interleukin-17a-promotes-lymphocytes-adhesion-and-induces-ccl2-and-cxcl1-release-from-brain-endothelial-cells
#14
Dagmara Weronika Wojkowska, Piotr Szpakowski, Andrzej Glabinski
The nature of the interaction between Th17 cells and the blood-brain barrier (BBB) is critical for the development of autoimmune inflammation in the central nervous system (CNS). Tumor necrosis factor alpha (TNF-α) or interleukin 17 (IL-17) stimulation is known to enhance the adherence of Th17 cells to the brain endothelium. The brain endothelial cells (bEnd.3) express Vascular cell adhesion molecule 1 (VCAM-1), the receptor responsible for inflammatory cell adhesion, which binds very late antigen 4 (VLA-4) on migrating effector lymphocytes at the early stage of brain inflammation...
May 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28479331/forkhead-box-protein-3-foxp3-demethylation-is-associated-with-tolerance-induction-in-peanut-induced-intestinal-allergy
#15
Meiqin Wang, Ivana V Yang, Elizabeth J Davidson, Anthony Joetham, Katsuyuki Takeda, Brian P O'Connor, Erwin W Gelfand
BACKGROUND: Regulatory T cells (Tregs) play an essential role in the maintenance of immune homeostasis in allergic diseases. OBJECTIVES: To define the mechanisms underlying induction of tolerance to peanut protein and prevention of the development of peanut allergy. METHODS: High or low doses of peanut extract (PE) were administered to pups every day for 2 weeks prior to peanut sensitization and challenge. Following challenge, symptoms, Treg numbers, FoxP3, Th2, Th17 cytokine and TGFβ expression in mesenteric lymph node (MLN) CD4(+) T cells and in jejunum were monitored...
May 4, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28470012/genetic-polymorphisms-of-il17-and-chagas-disease-in-the-south-and-southeast-of-brazil
#16
Pâmela Guimarães Reis, Christiane Maria Ayo, Luiz Carlos de Mattos, Cinara de Cássia Brandão de Mattos, Karina Mayumi Sakita, Amarilis Giaretta de Moraes, Larissa Pires Muller, Julimary Suematsu Aquino, Luciana Conci Macedo, Priscila Saamara Mazini, Ana Maria Sell, Divina Seila de Oliveira Marques, Reinaldo Bulgarelli Bestetti, Jeane Eliete Laguila Visentainer
The aim of this study was to investigate possible associations between genetic polymorphisms of IL17A G197A (rs2275913) and IL17F T7488C (rs763780) with Chagas Disease (CD) and/or the severity of left ventricular systolic dysfunction (LVSD) in patients with chronic Chagas cardiomyopathy (CCC). The study with 260 patients and 150 controls was conducted in the South and Southeast regions of Brazil. The genotyping was performed by PCR-RFLP. The A allele and A/A genotype of IL17A were significantly increased in patients and their subgroups (patients with CCC; patients with CCC and LVSD; and patients with CCC and severe LVSD) when compared to the control group...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28453334/different-immune-signature-in-youths-experiencing-antipsychotic-induced-weight-gain-compared-to-untreated-obese-patients
#17
Simone Pisano, Gennaro Catone, Giangennaro Coppola, Marco Carotenuto, Raffaella Iuliano, Claudia Tiano, Anna Rita Montesanto, Vittoria D'Esposito, Emanuele Del Giudice Miraglia, Pietro Formisano, Carmela Bravaccio
OBJECTIVES: To assess cytokine and chemokine levels in youth experiencing antipsychotic-induced weight gain (AIWG) compared to obese patients, hypothesizing a different "immune signature" between the two kinds of obesity. METHODS: We compared a group of youth experiencing AIWG (N 19, mean age 159 months, mean body mass index [BMI] z-score 1.81) and an age-, gender-, and BMI-matched group of untreated obese patients (N 19, mean age 147 months, mean BMI z-score 2) for a wide range of cytokines and chemokines by using a multiplex ELISA test...
April 28, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/28447937/il17-factors-are-early-regulators-in-the-gut-epithelium-during-inflammatory-response-to-vibrio-in-the-sea-urchin-larva
#18
Katherine M Buckley, Eric Chun Hei Ho, Taku Hibino, Catherine S Schrankel, Nicholas W Schuh, Guizhi Wang, Jonathan P Rast
IL17 cytokines are central mediators of mammalian immunity. In vertebrates, these factors derive from diverse cellular sources. Sea urchins share a molecular heritage with chordates that includes the IL17 system. Here, we characterize the role of epithelial expression of IL17 in the larval gut-associated immune response. The purple sea urchin genome encodes 10 IL17 subfamilies (35 genes) and 2 IL17 receptors. Most of these subfamilies are conserved throughout echinoderms. Two IL17 subfamilies are sequentially strongly upregulated and attenuated in the gut epithelium in response to bacterial disturbance...
April 27, 2017: ELife
https://www.readbyqxmd.com/read/28432524/correlation-of-serum-mmp3-and-other-biomarkers-with-clinical-outcomes-in-patients-with-ankylosing-spondylitis-a-pilot-study
#19
Dongyi He, Qi Zhu, Quan Zhou, Qing Qi, Hongmei Sun, Liza M Zachariah, Grace Wang, John D Reveille, Yongtao Guan, Xiaodong Zhou
The studies aimed to assess a set of biomarkers for their correlations with disease activity/severity of patients with ankylosing spondylitis (AS). A total of 24 AS patients were treated with etanercept and prospectively followed for 12 weeks. Serum levels of TNF-α, IFN-γ, TGF-β, IL6, IL15, IL17, MMP3, and MICA were measured at baseline and after treatment. The change of these biomarkers was analyzed for correlations with MRI indices for joint inflammation, Bath Ankylosing Spondylitis Disease Activity Index, Bath Ankylosing Spondylitis Functional Index, AS Disease Activity Score, serum CRP, and ESR...
April 22, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28423529/pif-promotes-brain-re-myelination-locally-while-regulating-systemic-inflammation-clinically-relevant-multiple-sclerosis-m-smegmatis-model
#20
Giuseppe Migliara, Martin Mueller, Alessia Piermattei, Chaya Brodie, Michael J Paidas, Eytan R Barnea, Francesco Ria
Neurologic disease diagnosis and treatment is challenging. Multiple Sclerosis (MS) is a demyelinating autoimmune disease with few clinical forms and uncertain etiology. Current studies suggest that it is likely caused by infection(s) triggering a systemic immune response resulting in antigen/non-antigen-related autoimmune response in central nervous system (CNS). New therapeutic approaches are needed. Secreted by viable embryos, PreImplantation Factor (PIF) possesses a local and systemic immunity regulatory role...
March 28, 2017: Oncotarget
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