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https://www.readbyqxmd.com/read/28100679/etv5-regulates-il-10-production-in-th-cells
#1
Byunghee Koh, Matthew M Hufford, Xin Sun, Mark H Kaplan
IL-10 is an immunoregulatory cytokine that has broad effects across the immune system. In Th cell subsets, Th2 cells produce considerable amounts of IL-10. The transcription factors that regulate IL-10 production in Th2 cells are still incompletely described. In this study, we demonstrate that the ETS family transcription factor ETS variant (Etv)5 regulates IL-10 production in Th2 cells. T cell-specific Etv5-deficient and littermate control mice demonstrated that IL-10 production and gene expression were significantly decreased in the absence of Etv5...
January 18, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28099879/high-dose-baff-receptor-specific-mab-sirna-conjugate-generates-fas-expressing-b-cells-in-lymph-nodes-and-high-affinity-serum-autoantibody-in-a-myasthenia-mouse-model
#2
Naazneen Ibtehaj, Karl E Anderson, Ruksana Huda
We investigated potential therapeutic effects of a conjugate of BAFF receptor specific- monoclonal antibody and short interference RNA in a mouse model of myasthenia gravis (EAMG). Whereas high-dose siRNA conjugate resulted in significant accumulation of Fas expressing CD19+/ B220+ cells and concurrent expression of type 1 interferon in lymph nodes, low-dose conjugate did not induce FAS expression but caused marked BAFF receptor deficiency in lymph nodes that was further associated with improved MG symptoms...
January 15, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28094236/deficiency-of-ptp1b-attenuates-hypothalamic-inflammation-via-activation-of-the-jak2-stat3-pathway-in-microglia
#3
Taku Tsunekawa, Ryoichi Banno, Akira Mizoguchi, Mariko Sugiyama, Takashi Tominaga, Takeshi Onoue, Daisuke Hagiwara, Yoshihiro Ito, Shintaro Iwama, Motomitsu Goto, Hidetaka Suga, Yoshihisa Sugimura, Hiroshi Arima
Protein tyrosine phosphatase 1B (PTP1B) regulates leptin signaling in hypothalamic neurons via the JAK2-STAT3 pathway. PTP1B has also been implicated in the regulation of inflammation in the periphery. However, the role of PTP1B in hypothalamic inflammation, which is induced by a high-fat diet (HFD), remains to be elucidated. Here, we showed that STAT3 phosphorylation (p-STAT3) was increased in microglia in the hypothalamic arcuate nucleus of PTP1B knock-out mice (KO) on a HFD, accompanied by decreased Tnf and increased Il10 mRNA expression in the hypothalamus compared to wild-type mice (WT)...
January 9, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28086957/regulatory-t-cells-and-il10-suppress-pulmonary-host-defense-during-early-life-exposure-to-radical-containing-combustion-derived-ultrafine-particulate-matter
#4
Sridhar Jaligama, Jordy Saravia, Dahui You, Nikki Yadav, Greg I Lee, Bishwas Shrestha, Stephania A Cormier
BACKGROUND: Exposure to elevated levels of particulate matter (PM) is associated with increased risk of morbidity and mortality due to respiratory tract viral infections in infants. Recent identification of environmentally persistent free radicals (EPFRs) in the PM from a variety of combustion sources suggests its role in the enhancement of disease severity of lower respiratory tract infections (LRTI). Our previous studies demonstrated that acute exposure to EPFRs induces pulmonary immunosuppression allowing for enhanced influenza disease severity...
January 13, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28063951/transcriptomic-analysis-of-spleen-infected-with-infectious-salmon-anemia-virus-reveals-distinct-pattern-of-viral-replication-on-resistant-and-susceptible-atlantic-salmon-salmo-salar
#5
Phillip Dettleff, Thomas Moen, Nina Santi, Victor Martinez
The infectious salmon anemia virus (ISAv) produces a systemic infection in salmonids, causing large losses in salmon production. However, little is known regarding the mechanisms exerting disease resistance. In this paper, we perform an RNA-seq analysis in Atlantic salmon challenged with ISAv (using individuals coming from families that were highly susceptible or highly resistant to ISAv infection). We evaluated the differential expression of both host and ISAv genes in a target organ for the virus, i.e. the spleen...
January 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28063478/developmental-expression-of-b-cell-molecules-in-equine-lymphoid-tissues
#6
J M B Prieto, R L Tallmadge, M J B Felippe
Identification and classification of B cell subpopulations has been shown to be challenging and inconsistent among different species. Our study tested aspects of ontogeny, phenotype, tissue distribution, and function of equine CD5(hi) B cells, which represented a greater proportion of B cells early in development and in the peritoneal cavity. CD5(hi) and CD5(lo) B cells differentially expressed B cell markers (CD2, CD21, IgM) measured using flow cytometry, but similar mRNA expression of signature genes (DGKA, FGL2, PAX5, IGHM, IL10) measured using quantitative RT-PCR...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28054937/impact-of-probiotic-administration-on-serum-c-reactive-protein-concentrations-systematic-review-and-meta-analysis-of-randomized-control-trials
#7
REVIEW
Mohsen Mazidi, Peyman Rezaie, Gordon A Ferns, Hassan Vatanparast
We conducted this systematic review and meta-analysis of prospective studies to determine the effect of probiotic administration on serum C-reactive protein (CRP) concentrations. We searched PubMed-Medline, Web of Science, the Cochrane, and Google Scholar databases (until May 2016) to identify prospective studies evaluating the impact of probiotic administration on CRP. We used a random effects models and generic inverse variance methods to synthesize quantitative data, followed by a leave-one-out method for sensitivity analysis...
January 3, 2017: Nutrients
https://www.readbyqxmd.com/read/28054352/impact-of-il13-genetic-polymorphism-arg130gln-on-total-serum-ige-levels-and-ifn-%C3%AE-gene-expression
#8
Bozena Smolkova, Jana Tulinska, Lubica Palkovicova Murinova, Verona Buocikova, Aurelia Liskova, Katarina Rausova, Miroslava Kuricova, Henrieta Patayova, Maria Sustrova, Eva Neubauerova Svorcova, Silvia Ilavska, Michaela Szabova, Tomas Nemessanyi, Eva Jahnova, Maria Dusinska, Peter Ciznar, Laurence Fuortes
This cross-sectional study was designed to investigate the extent of genetic susceptibility by targeting variants in IL-4/IL-13 signalling pathways leading to atopic disease in early childhood. We evaluated involvement of five single nucleotide polymorphisms IL4 C-590T, IL13 C-1055T, IL13 Arg130Gln, IL4RA Ile50Val and IL4RA Ser478Pro, in the control of serum total and antigen-specific IgE levels. Furthermore, we analyzed their association with changes in gene expression of five cytokines having key roles in inflammatory and anti-inflammatory immune response (IL-4, IL-13, IFN-γ, IL-8 and IL-10)...
January 5, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28052009/cancer-associated-fibroblasts-promote-an-immunosuppressive-microenvironment-through-the-induction-and-accumulation-of-protumoral-macrophages
#9
Hideyuki Takahashi, Koichi Sakakura, Takeshi Kudo, Minoru Toyoda, Kyoichi Kaira, Tetsunari Oyama, Kazuaki Chikamatsu
Stromal cells in the tumor microenvironment (TME) closely interact with tumor cells and affect tumor cell behavior in diverse manners. We herein investigated the mechanisms by which cancer-associated fibroblasts (CAFs) affect the functional polarization of tumor-associated macrophages (TAMs) in oral squamous cell carcinoma (OSCC) in vitro and in human cancer samples. The expression of CD68, CD14, CD163, CD200R, CD206, HLA-G, CD80, and CD86 was higher in CD14-positive cells co-cultured with the culture supernatants of CAFs established from OSCC specimens (CAF-educated cells) than in control cells...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28043874/intrahepatic-innate-immune-response-pathways-are-down-regulated-in-untreated-chronic-hepatitis-b
#10
Fanny Lebossé, Barbara Testoni, Judith Fresquet, Floriana Facchetti, Enrico Galmozzi, Maëlenn Fournier, Valérie Hervieu, Pascale Berthillon, Françoise Berby, Isabelle Bordes, David Durantel, Massimo Levrero, Pietro Lampertico, Fabien Zoulim
BACKGROUND AND AIMS: Hepatitis B virus (HBV) persistence and the pathobiology of chronic HBV (CHB) infections result from the interplay between viral replication and host immune responses. Intrahepatic host genes expression and a comprehensive analysis of serum and liver HBV markers were performed in a large cohort of untreated CHB patients. PATIENTS AND METHODS: 105 CHB patients untreated at the time of liver biopsy (34 HBeAg(+) and 71 HBeAg(-)) were analysed for the intrahepatic expression profile of 67 genes belonging to multiple innate immunity pathways...
December 30, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/28018318/cox-2-inhibition-reduces-brucella-bacterial-burden-in-draining-lymph-nodes
#11
Aurélie Gagnaire, Laurent Gorvel, Alexia Papadopoulos, Kristine Von Bargen, Jean-Louis Mège, Jean-Pierre Gorvel
Brucella is a Gram-negative facultative intracellular bacterium responsible for a chronic disease known as brucellosis, the most widespread re-emerging zoonosis worldwide. Establishment of a Th1-mediated immune response characterized by the production of IL-12 and IFNγ is essential to control the disease. Leukotrienes derived from arachidonic acid (AA) metabolism are known to negatively regulate a protective Th1 immune response against bacterial infections. Here, using genomics approaches we demonstrate that Brucella abortus strongly stimulates the prostaglandin (PG) pathway in dendritic cells (DC)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28018292/obesity-an-immunometabolic-perspective
#12
REVIEW
Indrani Ray, Sushil K Mahata, Rajat K De
Obesity, characterized by chronic activation of inflammatory pathways, is a critical factor contributing to insulin resistance (IR) and type 2 diabetes (T2D). Free fatty acids (FFAs) are increased in obesity and are implicated as proximate causes of IR and induction of inflammatory signaling in adipose, liver, muscle, and pancreas. Cells of the innate immune system produce cytokines, and other factors that affect insulin signaling and result in the development of IR. In the lean state, adipose tissue is populated by adipose tissue macrophage of the anti-inflammatory M2 type (ATM2) and natural killer (NK) cells; this maintains the insulin-sensitive phenotype because ATM2 cells secrete IL10...
2016: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28013313/increased-intestinal-inflammation-and-digestive-dysfunction-in-preterm-pigs-with-severe-necrotizing-enterocolitis
#13
Ann Cathrine F Støy, Peter M H Heegaard, Kerstin Skovgaard, Stine B Bering, Mette Bjerre, Per T Sangild
BACKGROUND: The risk factors for necrotizing enterocolitis (NEC) are well known, but the factors involved in the different NEC presentations remain unclear. OBJECTIVES: We hypothesized that digestive dysfunction and intestinal inflammation are mainly affected by severe NEC lesions. METHODS: In 48 preterm pigs, the association between the macroscopic NEC score (range 1-6) and the expression of 48 genes related to inflammation, morphological, and digestive parameters in the distal small intestine was investigated...
December 24, 2016: Neonatology
https://www.readbyqxmd.com/read/28012163/il-10-production-in-murine-igm-cd138-hi-cells-is-driven-by-blimp1-and-downregulated-in-class-switched-cells
#14
Nao Suzuki-Yamazaki, Rieko Yanobu-Takanashi, Tadashi Okamura, Satoshi Takaki
In contrast to antibody-induced inflammatory responses, some B-cell subpopulations suppress inflammation through the production of interleukin (IL)-10. However, the mechanisms underlying Il10 gene expression during B-cell development is elusive. Here, we identify IgM(+) B220(lo) CD138(hi) cells responsible for marked IL-10 production in the bone marrow and spleen of mice. These murine IL-10-producing cells predominantly secrete IgM and have unique characteristics of long-lived plasma cells in spite of high expression of surface IgM...
December 23, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/28008464/long-term-effects-of-the-collagenase-of-the-bacterium-clostridium-histolyticum-for-the-treatment-of-capsular-fibrosis-after-silicone-implants
#15
Sebastian Fischer, Yannick Diehm, Thomas Henzler, Martin R Berger, Jonas Kolbenschlag, Anne Latz, Ericka M Bueno, Christoph Hirche, Ulrich Kneser, Bohdan Pomahac
BACKGROUND: Capsular contracture remains the most frequent long-term complication after augmentation mammoplasty with silicone implants. Thereby, the main part of the fibrotic capsule is collagen. The collagenase of the bacterium Clostridium histolyticum is approved for the treatment of fibrotic diseases and has been demonstrated to be effective for capsular fibrosis treatment in the short term. However, long-term effectiveness is currently unknown but mandatory for clinical utilization...
December 23, 2016: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28007476/asthma-is-characterized-by-more-irf5-m1-and-cd206-m2-macrophages-and-less-il10-m2-like-macrophages-around-airways-compared-to-healthy-airways
#16
Christina Draijer, Carian E Boorsma, Patricia Robbe, Wim Timens, Machteld N Hylkema, Nick H T Ten Hacken, Maarten van den Berge, Dirkje S Postma, Barbro N Melgert
In asthma, macrophage polarization is altered from a state associated with anti-inflammatory responses to a state associated with inflammation as compared to control. Macrophage polarization states is linked to disease severity, sex and ICS treatment.
December 19, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28006890/serum-cytokines-in-paediatric-neuropsychiatric-syndromes-focus-on-attention-deficit-hyperactivity-disorder
#17
Renato Donfrancesco, Paola Nativio, Edoardo Borrelli, Eleonora Giua, Elda Andriola, Maria P Villa, Michela DI Trani
BACKGROUND: Inflammation may represent a common underlying mechanism in a wide range of diseases, including neuropsychiatric disorders. Cytokine involvement has been investigated in some studies on patients with childhood neuropsychiatric diseases. The aim of this study was to determine whether cytokines are involved in ADHD to provide a rationale for immune-based therapeutic strategies in this disorder. METHODS: Sixty children were studied: 34 consecutive drug-naïve children with ADHD (30 males and 4 females; mean age of 10...
December 22, 2016: Minerva Pediatrica
https://www.readbyqxmd.com/read/27999750/reprogramming-the-lung-microenvironment-by-inhaled-immunotherapy-fosters-immune-destruction-of-tumor
#18
Valentino Le Noci, Michele Sommariva, Monica Tortoreto, Nadia Zaffaroni, Manuela Campiglio, Elda Tagliabue, Andrea Balsari, Lucia Sfondrini
Due to their constant exposure to inhaled antigens, lungs represent a particularly immunosuppressive environment that limits excessive immune responses; however, cancer cells can exploit this unique environment for their growth. We previously described the ability of aerosolized CpG-ODN combined with Poly(I:C) (TLR9 and TLR3 agonists, respectively) to promote antitumor immunity in a B16 melanoma lung metastasis model. Here, we explored the possibility of improving the therapeutic efficacy of TLR9/TLR3 agonist combinations by including in the inhalant either an antibody directed to both Ly6G and Ly6C markers to locally deplete myeloid-derived suppressive cells (MDSCs) or IFNα to directly activate the natural killer (NK) and macrophage innate immune cells in the lung...
2016: Oncoimmunology
https://www.readbyqxmd.com/read/27999453/frequency-of-tnfa-infg-and-il10-gene-polymorphisms-and-their-association-with-malaria-vivax-and-genomic-ancestry
#19
Adriana Antônia da Cruz Furini, Gustavo Capatti Cassiano, Marcela Petrolini Capobianco, Sidney Emanuel Batista Dos Santos, Ricardo Luiz Dantas Machado
Polymorphisms in cytokine genes can alter the production of these proteins and consequently affect the immune response. The trihybrid heterogeneity of the Brazilian population is characterized as a condition for the use of ancestry informative markers. The objective of this study was to evaluate the frequency of -1031T>C, -308G>A and -238G>A TNFA, +874 A>T IFNG and -819C>T, and -592C>A IL10 gene polymorphisms and their association with malaria vivax and genomic ancestry. Samples from 90 vivax malaria-infected individuals and 51 noninfected individuals from northern Brazil were evaluated...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27989714/ifny-and-ifny-treg-subsets-with-stable-and-unstable-foxp3-expression-in-kidney-transplant-recipients-with-good-long-term-graft-function
#20
Karina Trojan, Christian Unterrainer, Mostafa Aly, Li Zhu, Rolf Weimer, Nuray Bulut, Christian Morath, Gerhard Opelz, Volker Daniel
BACKGROUND: Treg are a heterogenous cell population. In the present study we attempted to identify Treg subsets that might contribute to stable and good long-term graft function. METHOD: Lymphocyte and Treg subsets were studied in 136 kidney transplant recipients with good long-term graft function and in 52 healthy control individuals using eight-color-fluorescence flow cytometry. Foxp3 TSDR methylation status was investigated in enriched IFNy+ and IFNy- Treg preparations using high resolution melt analysis...
October 29, 2016: Transplant Immunology
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