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Asthma AND gene expression

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https://www.readbyqxmd.com/read/28212793/mir-634-is-a-pol-iii-dependent-intronic-microrna-regulating-alternative-polyadenylated-isoforms-of-its-host-gene-prkca
#1
Elvezia Maria Paraboschi, Giulia Cardamone, Valeria Rimoldi, Stefano Duga, Giulia Soldà, Rosanna Asselta
BACKGROUND: The protein kinase C alpha (PRKCA) gene, coding for a Th17-cell-selective kinase, shows a complex splicing pattern, with at least 2 stable alternative transcripts characterized by an alternative upstream polyadenylation site. Polymorphisms in this gene were associated with several conditions, including multiple sclerosis, asthma, schizophrenia, and cancer. The presence of a microRNA (miRNA), i.e. miR-634, within intron 15 of the PRKCA gene, suggests the intriguing possibility that this miRNA might play a role in the susceptibility to these pathologies...
February 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28209270/crosstalk-between-glucocorticoids-and-il-4-modulates-ym1-expression-in-alternatively-activated-myeloid-cells
#2
Nathalie Ng Kuet Leong, Frank Brombacher, Alexander H Dalpke, Michael Weitnauer
Airway epithelial cells induce a tolerogenic microenvironment by modulating immune cells in the lung. We recently showed that the supernatant of airway epithelial cells induces two marker genes of alternative activation, Ym1 and Ms4a8a, in respiratory myeloid cells. This induction was partially mediated by glucocorticoids, secreted by airway epithelial cells. In this study, we further investigated Ym1 and Ms4a8a regulation in alternatively activated myeloid cells in the presence of the TH2 cytokines IL-4 and IL-13...
February 9, 2017: Immunobiology
https://www.readbyqxmd.com/read/28207927/attenuated-airway-hyperresponsiveness-and-mucus-secretion-in-hdm-exposed-igf1r-deficient-mice
#3
S Piñeiro-Hermida, J A Gregory, I P López, R Torrens, C Ruíz-Martínez, M Adner, J G Pichel
BACKGROUND: Asthma is a common chronic lung disease characterized by airflow obstruction, airway hyperresponsiveness (AHR) and inflammation. IGFs have been reported to play a role in asthma but little is known about how the Insulin-like Growth Factor 1 Receptor (IGF1R) affects asthma pathobiology. METHODS: Female Igf1r-deficient and control mice were intranasally challenged with house dust mite (HDM) extract or PBS five days per week for four weeks. Lung function measurements, and bronchioalveolar lavage fluid (BALF), serum and lungs were collected on day 28 for further cellular, histological and molecular analysis...
February 16, 2017: Allergy
https://www.readbyqxmd.com/read/28205598/lyn-regulates-mucus-secretion-and-muc5ac-via-the-stat6-signaling-pathway-during-allergic-airway-inflammation
#4
Xiaoyun Wang, Yin Li, Deyu Luo, Xing Wang, Yun Zhang, Zhigang Liu, Nanshan Zhong, Min Wu, Guoping Li
Hypersecretion of mucus is an important component of airway remodeling and contributes to the mucus plugs and airflow obstruction associated with severe asthma phenotypes. Lyn has been shown to down-regulate allergen-induced airway inflammation. However, the role of Lyn in mucin gene expression remains unresolved. In this study, we first demonstrate that Lyn overexpression decreased the mucus hypersecretion and levels of the muc5ac transcript in mice exposed to ovalbumin (OVA). Lyn overexpression also decreased the infiltration of inflammatory cells and the levels of IL-13 and IL-4 in OVA-challenged airways...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28199728/altered-mir-155-expression-in-allergic-asthmatic-airways
#5
Carina Malmhäll, Kristina Johansson, Carla Winkler, Sahar Alawieh, Linda Ekerljung, Madeleine Rådinger
MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression at posttranscriptional level. We and others have previously identified miRNAs with pathological roles in animal models of asthma. To date, few studies have investigated miRNA expression in human asthmatics and miRNA expression in specific cellular subtypes in asthmatics is largely unexplored. Therefore, the aim of this study was to assess miR-146a and miR-155 expression in airways- and blood-derived samples, two miRNA candidates which have previously been described to play important roles in inflammatory processes...
February 15, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28193551/a-gibbs-sampling-method-to-determine-biomarkers-for-asthma
#6
Zhi-Jian Huang, Qin-Hai Shen, Yan-Sheng Wu, Ya-Li Huang
PURPOSE: To identify potential biomarkers and to uncover the mechanisms underlying asthma based on Gibbs sampling. METHODS: The molecular functions (MFs) with genes greater than 5 were determined using AnnotationMFGO of BAGS package, and the obtained MFs were then transformed to Markov chain (MC). Gibbs sampling was conducted to obtain a new MC. Meanwhile, the average probabilities of MFs were computed via MC Monte Carlo (MCMC) algorithm, followed by identification of differentially expressed MFs based on the probabilities of MF more than 0...
January 22, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28192616/association-of-ormdl3-with-rhinovirus-induced-endoplasmic-reticulum-stress-and-type-i-interferon-responses-in-human-leukocytes
#7
Yi-Ping Liu, Victoria Rajamanikham, Marissa Baron, Sagar Patel, Sameer K Mathur, Elizabeth A Schwantes, Carole Ober, Daniel J Jackson, James E Gern, Robert F Lemanske, Judith A Smith
BACKGROUND: Children with risk alleles at the 17q21 genetic locus who wheeze during rhinovirus illnesses have a greatly increased likelihood of developing childhood asthma. In mice, overexpression of the 17q21 gene ORMDL3 leads to airway remodeling and hyper-responsiveness. However, the mechanisms by which ORMDL3 predisposes to asthma are unclear. Previous studies have suggested that ORMDL3 induces endoplasmic reticulum (ER) stress and production of the type I interferon (IFN) regulated chemokine CXCL10...
February 13, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28185773/association-of-gene-polymorphisms-in-interleukin-6-in-infantile-bronchial-asthma
#8
Eva Babusikova, Jana Jurecekova, Milos Jesenak, Andrea Evinova
INTRODUCTION: The genetic background of bronchial asthma is complex, and it is likely that multiple genes contribute to its development both directly and through gene-gene interactions. Cytokines contribute to different aspects of asthma, as they determine the type, severity and outcomes of asthma pathogenesis. Allergic asthmatics undergoing an asthmatic attack exhibit significantly higher levels of pro-inflammatory cytokines, such as interleukins and chemokines. In recent years, cytokines and their receptors have been shown to be highly polymorphic, and this prompted us to investigate interleukin 6 promoter polymorphisms at position -174G/C (rs1800795) and at -572G/C (rs1800796) in relation to asthma in children...
February 6, 2017: Archivos de Bronconeumología
https://www.readbyqxmd.com/read/28183434/multigenerational-cohorts-in-patients-with-asthma-and-allergy
#9
S Hasan Arshad, Wilfried Karmaus, Hongmei Zhang, John W Holloway
Recent observations that disease risk can be transmitted across generations without the need for direct exposure of the child to the index environmental insult has sparked interest in transgenerational inheritance. Epigenetics describes processes that modify gene expression without a change in the nucleotide sequence. Epigenetic processes can be induced in response to environmental exposures, can influence disease risk, and might explain these multigenerational effects. In experimental models a number of epigenetic mechanisms have been identified that could mediate vertical transmission of epigenetic inheritance...
February 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28179600/an-ethanol-extract-of-aster-yomena-kitam-honda-inhibits-lipopolysaccharide-induced-inflammatory-responses-in-murine-raw-264-7-macrophages
#10
Hye-Joo Kang, Ji-Suk Jeong, No-Jin Park, Geun-Bae Go, Sung Ok Kim, Cheol Park, Byung Woo Kim, Su-Hyun Hong, Yung Hyun Choi
Aster yomena (Kitam.) Honda has been widely used as a traditional herbal medicine for centuries to treat cough, asthma, insect bites, etc. Recent reports indicate that A. yomena possesses a wide spectrum of pharmacological activities; however, few experiments have described its anti-inflammatory properties. The present study examined the anti-inflammatory effects of an ethanol extract of A. yomena leaves (EEAY) on lipopolysaccharide (LPS)-stimulated murine RAW 264.7 macrophages. Treatment with EEAY significantly reduced the secretion of pro-inflammatory molecules, such as nitric oxide and interleukin-1β, in LPS-stimulated RAW 264...
February 7, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28179442/t-helper-cell-type-2-th2-and-non-th2-molecular-phenotypes-of-asthma-using-sputum-transcriptomics-in-u-biopred
#11
Chih-Hsi Scott Kuo, Stelios Pavlidis, Matthew Loza, Fred Baribaud, Anthony Rowe, Iaonnis Pandis, Ana Sousa, Julie Corfield, Ratko Djukanovic, Rene Lutter, Peter J Sterk, Charles Auffray, Yike Guo, Ian M Adcock, Kian Fan Chung
Asthma is characterised by heterogeneous clinical phenotypes. Our objective was to determine molecular phenotypes of asthma by analysing sputum cell transcriptomics from 104 moderate-to-severe asthmatic subjects and 16 nonasthmatic subjects.After filtering on the differentially expressed genes between eosinophil- and noneosinophil-associated sputum inflammation, we used unbiased hierarchical clustering on 508 differentially expressed genes and gene set variation analysis of specific gene sets.We defined three transcriptome-associated clusters (TACs): TAC1 (characterised by immune receptors IL33R, CCR3 and TSLPR), TAC2 (characterised by interferon-, tumour necrosis factor-α- and inflammasome-associated genes) and TAC3 (characterised by genes of metabolic pathways, ubiquitination and mitochondrial function)...
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28167467/clinical-efficacy-and-safety-of-herbal-medicine-dermidoc-in-the-management-of-atopic-dermatitis-versus-allopathic-medicine-polymixinb-bacitrin-ointment
#12
Muhammad Osama Alam, Ejaz Mohiuddin, - Shahab-Ud-Din, Muhammad Daniyal, Khan Usmanghani
Atopic dermatitis (AD) commonly identified as eczema. AD is an inflammatory, long-lasting, highly pruritic reverting disease of the skin. AD is classified by disease of outer skin layer barrier function. AD is progress with Immunoglobulin E facilitated sensitization to food and environmental allergens. One study stated that more than 59.6% of teen-agers with AD are at high risk of develop asthma or rhinitis. Interaction between genes and environment increase the prevalence of AD. AD have three standard stages: infantile, childhood, and adulthood...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28162907/%C3%AE-2-receptor-agonists-salbutamol-and-terbutaline-attenuated-cytokine-production-by-suppressing-erk-pathway-through-camp-in-macrophages
#13
Tiina Keränen, Tuija Hömmö, Eeva Moilanen, Riku Korhonen
β2-receptor agonists are used in the treatment of inflammatory obstructive lung diseases asthma and COPD as a symptomatic remedy, but they have been suggested to possess anti-inflammatory properties, also. β2-receptor activation is considered to lead to the activation of ERK pathway through G-protein- and cAMP-independent mechanisms. In this study, we investigated the effects of β2-receptor agonists salbutamol and terbutaline on the production of inflammatory factors in macrophages. We found that β2-receptor agonists inhibited LPS-induced ERK phosphorylation and the production of MCP-1...
February 2, 2017: Cytokine
https://www.readbyqxmd.com/read/28138042/control-of-neurotransmission-by-nav1-7-in-human-guinea-pig-and-mouse-airway-parasympathetic-nerves
#14
Michaela Kocmalova, Marian Kollarik, Brendan J Canning, Fei Ru, Robert A Herbstromer, Sonya Meeker, Silvia Fonquerna, Monica Aparici, Montserrat Miralpeix, Xian Chi, Baolin Li, Ben Wilenkin, Jeff McDermott, Eric Nisenbaum, Jeff Krajewski, Bradley J Undem
Little is known about the voltage-gated sodium channels (NaVs) that control neurotransmission in the parasympathetic nervous system. We evaluated the expression of the α subunits of each of the nine NaVs in human, guinea pig, and mouse airway parasympathetic ganglia. We combined this information with a pharmacological analysis of selective NaV blockers on parasympathetic contractions of isolated airway smooth muscle. As would be expected from previous studies, tetrodotoxin potently blocked the parasympathetic responses in the airways of each species...
January 30, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28137284/epigenetic-modifying-enzyme-expression-in-asthmatic-airway-epithelial-cells-and-fibroblasts
#15
Dorota Stefanowicz, Jari Ullah, Kevin Lee, Furquan Shaheen, Ekiomoado Olumese, Nick Fishbane, Hyun-Kyoung Koo, Teal S Hallstrand, Darryl A Knight, Tillie-Louise Hackett
BACKGROUND: Recognition of the airway epithelium as a central mediator in the pathogenesis of asthma has necessitated greater understanding of the aberrant cellular mechanisms of the epithelium in asthma. The architecture of chromatin is integral to the regulation of gene expression and is determined by modifications to the surrounding histones and DNA. The acetylation, methylation, phosphorylation, and ubiquitination of histone tail residues has the potential to greatly alter the accessibility of DNA to the cells transcriptional machinery...
January 31, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28125291/epstein-barr-virus-induced-gene-2-ebi2-mediates-allergen-induced-leukocyte-migration-into-airways
#16
Zhong-Jian Shen, Jie Hu, Venkatesh Kashi, Elizabeth A Kelly, Loren C Denlinger, Kevin Garza, David Russell, Nizar N Jarjour, James S Malter
Background Leukocyte recruitment to sites of allergic inflammation depends on the local production of priming cytokines, chemokines, and potentially other mediators as well. Previously, we showed that eosinophils (Eos) express numerous orphan G-protein coupled receptors (GPRs) including EBI2. Despite its contribution to inflammatory diseases, the role of EBI2 in pulmonary eosinophilia is unknown. Objectives To determine whether oxysterol ligands for EBI2 are increased in asthma exacerbation and if, or how they promote eosinophil pulmonary migration...
January 26, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28116096/an-inhaled-dose-of-budesonide-induces-genes-involved-in-transcription-and-signaling-in-the-human-airways-enhancement-of-anti-and-proinflammatory-effector-genes
#17
Richard Leigh, Mahmoud M Mostafa, Elizabeth M King, Christopher F Rider, Suharsh Shah, Curtis Dumonceaux, Suzanne L Traves, Andrew McWhae, Tyler Kolisnik, Cora Kooi, Donna M Slater, Margaret M Kelly, Mark Bieda, Anna Miller-Larsson, Robert Newton
Although inhaled glucocorticoids, or corticosteroids (ICS), are generally effective in asthma, understanding their anti-inflammatory actions in vivo remains incomplete. To characterize glucocorticoid-induced modulation of gene expression in the human airways, we performed a randomized placebo-controlled crossover study in healthy male volunteers. Six hours after placebo or budesonide inhalation, whole blood, bronchial brushings, and endobronchial biopsies were collected. Microarray analysis of biopsy RNA, using stringent (≥2-fold, 5% false discovery rate) or less stringent (≥1...
August 2016: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28115681/allergic-environment-enhances-airway-epithelial-pro-inflammatory-responses-to-rhinovirus-infection
#18
Cristan Herbert, Kimchi Do, Vincent Chiu, Linda Garthwaite, Yifan Chen, Paul M Young, Daniela Traini, Rakesh K Kumar
Airway epithelial cells (AEC) exhibit a pro-inflammatory phenotype in patients with allergic asthma. We examined the effect of an allergic cytokine environment on the response of AEC to rhinovirus, the most common trigger of acute exacerbations of asthma. Calu-3 cells, a well-differentiated human AEC line, were cultured with or without the T-helper type 2 cytokines IL-4 and IL-13, then stimulated with a toll-like receptor (TLR) 3 agonist (poly I:C, dsRNA) or a TLR7 agonist (imiquimod), or infected with rhinovirus 16...
January 23, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28108985/the-th2-gene-cluster-unraveled-role-of-rhs6
#19
EDITORIAL
Cameron H Flayer, Angela Haczku
Although the transcription factors that regulate T helper (Th) type 2 cytokine production (IL-4, IL-5, and IL-13) are possible novel therapeutic targets, we lack a detailed understanding of the mechanisms that regulate the transcription of these cytokines. In this issue of Allergy, Hwang et al. studied the role of a specific DNA region (a cis-acting element called Rad50 hypersensitive site 6) RHS6, in the development of allergic airway inflammation. RHS6 is found in the Th2 cytokine "locus control region" but its role in activation of the IL-4, IL-5, and IL-13 genes was unknown...
January 20, 2017: Allergy
https://www.readbyqxmd.com/read/28107345/syk-regulates-neutrophilic-airway-hyper-responsiveness-in-a-chronic-mouse-model-of-allergic-airways-inflammation
#20
Sepehr Salehi, Xiaomin Wang, Stephen Juvet, Jeremy A Scott, Chung-Wai Chow
BACKGROUND: Asthma is a chronic inflammatory disease characterized by airways hyper-responsiveness (AHR), reversible airway obstruction, and airway inflammation and remodeling. We previously showed that Syk modulates methacholine-induced airways contractility in naïve mice and in mice with allergic airways inflammation. We hypothesize that Syk plays a role in the pathogenesis of AHR; this was evaluated in a chronic 8-week mouse model of house dust mite (HDM)-induced allergic airways inflammation...
2017: PloS One
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