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https://www.readbyqxmd.com/read/28107494/protective-roles-for-rgs2-in-a-mouse-model-of-house-dust-mite-induced-airway-inflammation
#1
Tresa George, Matthew Bell, Mainak Chakraborty, David P Siderovski, Mark A Giembycz, Robert Newton
The GTPase-accelerating protein, regulator of G-protein signalling 2 (RGS2) reduces signalling from G-protein-coupled receptors (GPCRs) that signal via Gαq. In humans, RGS2 expression is up-regulated by inhaled corticosteroids (ICSs) and long-acting β2-adrenoceptor agonists (LABAs) such that synergy is produced in combination. This may contribute to the superior clinical efficacy of ICS/LABA therapy in asthma relative to ICS alone. In a murine model of house dust mite (HDM)-induced airways inflammation, three weeks of intranasal HDM (25 μg, 3×/week) reduced lung function and induced granulocytic airways inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28106886/loss-of-menin-in-osteoblast-lineage-affects-osteocyte-osteoclast-crosstalk-causing-osteoporosis
#2
Peng Liu, Sooyeon Lee, Jeanette Knoll, Alexander Rauch, Susanne Ostermay, Julia Luther, Nicole Malkusch, Ulf H Lerner, Mario M Zaiss, Mona Neven, Rainer Wittig, Martina Rauner, Jean-Pierre David, Philippe Bertolino, Chang X Zhang, Jan P Tuckermann
During osteoporosis bone formation by osteoblasts is reduced and/or bone resorption by osteoclasts is enhanced. Currently, only a few factors have been identified in the regulation of bone integrity by osteoblast-derived osteocytes. In this study, we show that specific disruption of menin, encoded by multiple endocrine neoplasia type 1 (Men1), in osteoblasts and osteocytes caused osteoporosis despite the preservation of osteoblast differentiation and the bone formation rate. Instead, an increase in osteoclast numbers and bone resorption was detected that persisted even when the deletion of Men1 was restricted to osteocytes...
January 20, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28100749/promoted-interaction-of-c-ebp%C3%AE-with-demethylated-cxcr3-gene-promoter-contributes-to-neuropathic-pain-in-mice
#3
Bao-Chun Jiang, Li-Na He, Xiao-Bo Wu, Hui Shi, Wen-Wen Zhang, Zhi-Jun Zhang, De-Li Cao, Chun-Hua Li, Jun Gu, Yong-Jing Gao
: DNA methylation has been implicated in the pathogenesis of chronic pain. However, the specific genes regulated by DNA methylation under neuropathic pain condition remain largely unknown. Here we investigated how chemokine receptor CXCR3 is regulated by DNA methylation and how it contributes to neuropathic pain induced by spinal nerve ligation (SNL) in mice. SNL increased Cxcr3 mRNA and protein expression in the neurons of the spinal cord. Meanwhile, the CpG (5'-cytosine-phosphate-guanine-3') island in the Cxcr3 gene promoter region was demethylated, and the expression of DNA methyltransferase 3b (DNMT3b) was decreased...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28099447/genome-wide-immune-modulation-of-tlr3-mediated-inflammation-in-intestinal-epithelial-cells-differs-between-single-and-multi-strain-probiotic-combination
#4
Chad W MacPherson, Padmaja Shastri, Olivier Mathieu, Thomas A Tompkins, Pierre Burguière
Genome-wide transcriptional analysis in intestinal epithelial cells (IEC) can aid in elucidating the impact of single versus multi-strain probiotic combinations on immunological and cellular mechanisms of action. In this study we used human expression microarray chips in an in vitro intestinal epithelial cell model to investigate the impact of three probiotic bacteria, Lactobacillus helveticus R0052 (Lh-R0052), Bifidobacterium longum subsp. infantis R0033 (Bl-R0033) and Bifidobacterium bifidum R0071 (Bb-R0071) individually and in combination, and of a surface-layer protein (SLP) purified from Lh-R0052, on HT-29 cells' transcriptional profile to poly(I:C)-induced inflammation...
2017: PloS One
https://www.readbyqxmd.com/read/28095439/intracranial-injection-of-dengue-virus-induces-interferon-stimulated-genes-and-cd8-t-cell-infiltration-by-sphingosine-kinase-1-independent-pathways
#5
Wisam H Al-Shujairi, Jennifer N Clarke, Lorena T Davies, Mohammed Alsharifi, Stuart M Pitson, Jillian M Carr
We have previously reported that the absence of sphingosine kinase 1 (SK1) affects both dengue virus (DENV) infection and innate immune responses in vitro. Here we aimed to define SK1-dependancy of DENV-induced disease and the associated innate responses in vivo. The lack of a reliable mouse model with a fully competent interferon response for DENV infection is a challenge, and here we use an experimental model of DENV infection in the brain of immunocompetent mice. Intracranial injection of DENV-2 into C57BL/6 mice induced body weight loss and neurological symptoms which was associated with a high level of DENV RNA in the brain...
2017: PloS One
https://www.readbyqxmd.com/read/28088249/interactions-of-human-microglia-cells-with-japanese-encephalitis-virus
#6
Nils Lannes, Viviane Neuhaus, Brigitte Scolari, Solange Kharoubi-Hess, Michael Walch, Artur Summerfield, Luis Filgueira
BACKGROUND: Japanese encephalitis virus (JEV) is a neurotropic flavivirus causing mortality and morbidity in humans. Severe Japanese encephalitis cases display strong inflammatory responses in the central nervous system and an accumulation of viral particles in specific brain regions. Microglia cells are the unique brain-resident immune cell population with potent migratory functions and have been proposed to act as a viral reservoir for JEV. Animal models suggest that the targeting of microglia by JEV is partially responsible for inflammatory reactions in the brain...
January 14, 2017: Virology Journal
https://www.readbyqxmd.com/read/28076333/surgical-debulking-promotes-recruitment-of-macrophages-and-triggers-glioblastoma-phagocytosis-in-combination-with-cd47-blocking-immunotherapy
#7
Huaiyang Zhu, Lina Leiss, Ning Yang, Cecilie B Rygh, Siddhartha S Mitra, Samuel H Cheshier, Irving L Weissman, Bin Huang, Hrvoje Miletic, Rolf Bjerkvig, Per Ø Enger, Xingang Li, Jian Wang
Surgical resection is a standard component of treatment in the clinical management of patients with glioblastoma multiforme (GBM). However, experimental therapies are rarely investigated in the context of tumor debulking in preclinical models. Here, a surgical debulking GBM xenograft model was developed in nude rats, and was used in combination with CD47 blocking immunotherapy, a novel treatment strategy that triggers phagocytosis of tumor cells by macrophages in diverse cancer types including GBM. Orthotopic patient-derived xenograft tumors expressing CD47 were resected at 4 weeks after implantation and immediately thereafter treated with anti-CD47 or control antibodies injected into the cavity...
January 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28067328/predictive-value-of-serum-ifn-%C3%AE-inducible-protein-10-and-ifn-%C3%AE-il-4-ratio-for-liver-fibrosis-progression-in-chb-patients
#8
Yadong Wang, Weiyan Yu, Chuan Shen, Wei Wang, Li Zhang, Fang Liu, Hui Sun, Yajuan Zhao, Honghao Che, Caiyan Zhao
Noninvasive serum markers for assessment of liver fibrosis in chronic hepatitis B (CHB) patients have not been well-studied. The present study was to evaluate the predictive value of serum interferon gamma-inducible protein-10 (IP-10/CXCL10) and the interferon (IFN)-γ/interleukin (IL)-4 ratio for liver fibrosis progression in CHB patients. A total of 180 CHB patients were categorized into four groups: no fibrosis, mild fibrosis, moderate fibrosis, and severe fibrosis. Serum and intrahepatic levels of IP-10, IFN-γ, and IL-4 were examined, from which the IFN-γ/IL-4 ratio was calculated...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28065589/perk-and-xbp1-differentially-regulate-cxcl10-and-ccl2-production
#9
Shuang Zhu, Hua Liu, Haibo Sha, Ling Qi, Dian-Shuai Gao, Wenbo Zhang
Inflammation plays a key role in the pathogenesis of many retinal degenerative diseases related with photoreceptor dysfunction/degeneration. However the involvement of photoreceptor cells in inflammatory reactions is largely unknown as they are not considered as inflammatory cells. In this study, we assessed whether photoreceptor cells can produce CCL2 and CXCL10, two important players in inflammation during endoplasmic reticulum (ER) stress. After photoreceptor 661 W cells were treated with ER stress inducer thapsigargin (TG), induction of ER stress increased CXCL10 and CCL2 expression at both mRNA and protein levels, which was significantly blocked by an ER stress blocker 4-phenylbutyrate...
January 5, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28057639/clinical-and-immunologic-impact-of-ccr5-blockade-in-graft-versus-host-disease-prophylaxis
#10
Ryan H Moy, Austin P Huffman, Lee P Richman, Lisa Crisalli, Ximi K Wang, James A Hoxie, Rosemarie Mick, Stephen G Emerson, Yi Zhang, Robert H Vonderheide, David L Porter, Ran Reshef
Graft-versus-host disease (GVHD) is a major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Lymphocyte trafficking via chemokine receptors such as CCR5 plays a critical role in alloreactive responses, and previous data suggest that CCR5 blockade with maraviroc results in a low incidence of visceral GVHD. However, the full scope of clinical and immunologic effects of CCR5 blockade in HSCT has not been described. We compared a cohort of patients enrolled on a trial of reduced-intensity allo-HSCT with standard GVHD prophylaxis plus maraviroc to a contemporary control cohort receiving standard GVHD prophylaxis alone...
January 5, 2017: Blood
https://www.readbyqxmd.com/read/28051885/elevated-serum-interferon-%C3%AE-inducible-protein-10-in-women-with-polycystic-ovary-syndrome
#11
Hongli Deng, Zhibo Li, Guang Liu, Xianhua Li, Yong Chen, Yong Zhang, Yifan Sun, Jinjian Fu
BACKGROUND: Interferon γ-induced protein 10 kDa (IP10/CXCL10) is a chemokine related to endocrine disorders; however, the serum concentrations of IP10 in women with polycystic ovary syndrome (PCOS) have not yet been reported. Therefore, we investigated whether IP10 is increased in PCOS patients and its potential clinical value in PCOS patients. METHODS: For this research, the serum IP10, glucose, insulin, high sensitivity C-reactive protein (hs-CRP), follicle-stimulating hormone (FSH), luteinizing hormone (LH) and total testosterone (TT) concentrations were measured in 60 women with PCOS and healthy controls...
January 4, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28046003/cxcl10-ip-10-neutralization-can-ameliorate-lipopolysaccharide-induced-acute-respiratory-distress-syndrome-in-rats
#12
Shan Lang, Libing Li, Xuning Wang, Junping Sun, Xinying Xue, Yongjiu Xiao, Mingyue Zhang, Ting Ao, Jianxin Wang
The role of C-X-C motif chemokine 10 (CXCL10), a pro-inflammatory factor, in the development of acute respiratory distress syndrome (ARDS) remains unclear. In this study, we explored the role of CXCL10 and the effect of CXCL10 neutralization in lipopolysaccharide (LPS)-induced ARDS in rats. The expression of CXCL10 and its receptor chemokine receptor 3(CXCR3) increased after LPS induction. Moreover, neutralization of CXCL10 ameliorated the severity of ARDS by reducing pulmonary edema, inhibiting the release of inflammatory mediators (IFN-γ, IL-6 and ICAM-1) and limiting inflammatory cells (neutrophils, macrophages, CD8+ T cells) influx into the lung, with a reduction in CXCR3 expression in neutrophils and macrophages...
2017: PloS One
https://www.readbyqxmd.com/read/28044228/reduced-il-37-production-increases-spontaneous-chemokine-expressions-in-colon-epithelial-cells
#13
Sezin Günaltay, Mohammed Ghiboub, Olof Hultgren, Elisabeth Hultgren Hörnquist
BACKGROUND AND AIM: Microscopic colitis, comprising collagenous colitis and lymphocytic colitis, is a common cause of chronic diarrhea. Previously, we showed enhanced chemokine productions in microscopic colitis patients, indicating dysregulated immune cell chemotaxis in the immunopathogenesis. We also showed decreased mRNA of IL-37, mainly regarded as an anti-inflammatory cytokine, in the colonic mucosa of these patients, potentially an important factor for the chronicity of the colitis...
January 2, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28044192/porcine-mast-cells-infected-with-h1n1-influenza-virus-release-histamine-and-inflammatory-cytokines-and-chemokines
#14
In Hong Lee, Hyun Soo Kim, Sang Heui Seo
Mast cells reside in many tissues, including the lungs, and might play a role in enhancing influenza virus infections in animals. In this study, we cultured porcine mast cells from porcine bone marrow cells with IL-3 and stem cell factor to study the infectivity and activation of the 2009 pandemic H1N1 influenza virus of swine origin. Porcine mast cells were infected with H1N1 influenza virus, without the subsequent production of infectious viruses but were activated, as indicated by the release of histamines...
January 2, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28043874/intrahepatic-innate-immune-response-pathways-are-down-regulated-in-untreated-chronic-hepatitis-b
#15
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/28042949/recombinant-parvoviruses-armed-to-deliver-cxcl4l1-and-cxcl10-are-impaired-in-their-antiangiogenic-and-antitumoral-effects-in-a-kaposi-sarcoma-tumor-model-due-to-the-chemokines-interference-with-the-virus-cycle
#16
Christiane Dinsart, Kalliopi Pervolaraki, Alexandra Stroh-Dege, Muriel Lavie, Isabelle Ronsse, Jean Rommelaere, Jo Van Damme, Katrien Van Raemdonck, Sofie Struyf
Application of oncolytic viruses is a valuable option to broaden the armament of anti-cancer therapies as these combine specific cytotoxic effects and immune-stimulating properties. The self-replicating H-1 parvovirus (H-1PV) is a prototypical oncolytic virus that besides targeting tumor cells also infects endothelial cells, thus combining oncolytic and angiostatic traits. To increase its therapeutic value, H-1PV can be armed with cytokines or chemokines to enhance the immunological response. Some chemokines, more specifically the CXCR3 ligands CXCL4L1 and CXCL10 combine immune-stimulating properties with angiostatic activity...
January 2, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28040482/schistosoma-antigens-downregulate-cxcl9-production-by-pbmc-of-htlv-1-infected-individuals
#17
Luciane Mota Lima, Luciana Santos Cardoso, Silvane Braga Santos, Ricardo Riccio Oliveira, Sérgio Costa Oliveira, Alfredo Miranda Góes, Alex Loukas, Maria Ilma Araujo
: HTLV-1 is the causal agent of Adult T cell Leukemia/lymphoma (ATLL) and HTLV-1-associated Myelopathy/Tropical Spastic Paraparesis (HAM/TSP). The immune response to HTLV-1-infection is polarized to the Th1-type, and the presence of CXCL9/CXCL10 chemokines may lead to an increase in the recruitment of pro-inflammatory molecules in spinal cord tissue, contributing to the damage observed in the development of HAM/TSP. It has been observed that in chronic helminth-infections, such as schistosomiasis, there is a deviation toward the Th2/regulatory immune response...
December 28, 2016: Acta Tropica
https://www.readbyqxmd.com/read/28027722/celastrol-suppresses-expression-of-adhesion-molecules-and-chemokines-by-inhibiting-jnk-stat1-nf-%C3%AE%C2%BAb-activation-in-poly-i-c-stimulated-astrocytes
#18
Soo Yeon An, Gi Soo Youn, Hyejin Kim, Soo Young Choi, Jinseu Park
In the central nervous system, viral infection can induce inflammation by up-regulating pro-inflammatory mediators that contribute to enhanced infiltration of immune cells into the central nervous areas. Celastrol is known to exert various regulatory functions, including anti-microbial activities. In this study, we investigated the regulatory effects and the mechanisms of action of celastrol against astrocytes activated with polyinosinic-polycytidylic acid (poly(I:C)), a synthetic dsRNA, as a model of pro-inflammatory mediated responses...
September 2, 2016: BMB Reports
https://www.readbyqxmd.com/read/28012987/characterization-of-non-lethal-west-nile-virus-wnv-infection-in-horses-subclinical-pathology-and-innate-immune-response
#19
Helle Bielefeldt-Ohmann, Angela Bosco-Lauth, Airn-Elizabeth Hartwig, M Jasim Uddin, Jean Barcelon, Willy W Suen, Wenqi Wang, Roy A Hall, Richard A Bowen
Most natural West Nile virus (WNV) infections in humans and horses are subclinical or sub-lethal and non-encephalitic. Yet, the main focus of WNV research remains on the pathogenesis of encephalitic disease, mainly conducted in mouse models. We characterized host responses during subclinical WNV infection in horses and compared outcomes with those obtained in a novel rabbit model of subclinical WNV infection (Suen et al. 2015. Pathogens, 4: 529). Experimental infection of 10 horses with the newly emerging WNV-strain, WNVNSW2011, did not result in neurological disease in any animal but transcriptional upregulation of both type I and II interferon (IFN) was seen in peripheral blood leukocytes prior to or at the time of viremia...
December 21, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28011441/cannabinoid-receptors-on-peripheral-leukocytes-from-patients-with-schizophrenia-evidence-for-defective-immunomodulatory-mechanisms
#20
Salvina Maria de Campos-Carli, Marcio Sobreira Araújo, Amanda Cardoso de Oliveira Silveira, Vitor Bortolo de Rezende, Natalia Pessoa Rocha, Rodrigo Ferretjans, Rafael Ribeiro-Santos, Andrea Teixeira-Carvalho, Olindo Assis Martins-Filho, Michael Berk, João Vinícius Salgado, Antonio Lucio Teixeira
OBJECTIVES: to evaluate cannabinoid receptors (CBRs) expression on peripheral immune cells, i.e., blood monocytes, neutrophils, lymphocytes, and NK cells, and their relationship to a wide range of serum cytokine levels in subjects with schizophrenia and controls. METHODS: A sample of 55 people with chronic schizophrenia and 48 controls were enrolled in the study. The expression of the cannabinoid receptors CB1R and CB2R was evaluated in peripheral blood leukocytes by flow cytometry...
December 3, 2016: Journal of Psychiatric Research
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