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Asthma AND gene expression

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https://www.readbyqxmd.com/read/28804539/mir-371-mir-138-mir-544-mir-145-and-mir-214-could-modulate-th1-th2-balance-in-asthma-through-the-combinatorial-regulation-of-runx3
#1
Yu-Ying Qiu, Ying-Wei Zhang, Xiu-Fen Qian, Tao Bian
Asthma is tightly related to the imbalance of Th1/Th2 cells, and Runx3 plays a pivotal role in the differentiation of T helper cells. The present study aimed to investigate dysregulated microRNAs that may target Runx3 in CD4(+) T cells from asthmatic patients and reveal Runx3 function in Th1/Th2 balance regulation. We detected the levels of Th1- and Th2-related cytokines by ELISA and analyzed the differentiation marker gene of T helper cells by qRT-PCR. Results indicated that an imbalance of Th1/Th2 cells was present in our asthmatic subject...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28801844/brg1-inhibits-e-cadherin-expression-in-lung-epithelial-cells-and-disrupts-epithelial-integrity
#2
Ting Wang, Wenjing Zou, Chao Niu, Fengxia Ding, Yaping Wang, Shuang Cai, Hua Zhu, Daiyin Tian, Jihong Dai, Enmei Liu, Qing Lu, Zhou Fu, Lin Zou
Brahma-related gene-1 (Brg1), a key chromatin remodeling factor, is associated with cell proliferation and migration in kidney and heart cells, but few reports have examined its role in airway epithelial cell. Airway epithelial injury, which is involved in the entire pathological process of asthma, is an important cause of recurrent asthma. Here, we studied the function of Brg1 in an ovalbumin (OVA)-induced asthma model (lung-specific conditional Brg1 (Brg1(-/-)) knockdown mice) and human bronchial epithelial 16HBE cells stably expressing Brg1 shRNA...
August 11, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28796240/glucocorticoid-receptor-expression-on-circulating-leukocytes-in-healthy-and-asthmatic-adolescents-in-response-to-exercise
#3
Kim D Lu, Dan Cooper, Fadia Haddad, Frank Zaldivar, Monica Kraft, Shlomit Radom-Aizik
BackgroundPoor aerobic fitness is associated with worsening of asthma symptoms, and fitness training may improve asthma control. The mechanism linking fitness with asthma is not known. We hypothesized that repeated bouts of exercise would lead to a downregulation of glucocorticoid receptor (GR) expression on circulating leukocytes, reflecting a reduced responsiveness to stress.MethodsIn a prospective exercise training intervention of healthy and asthmatic adolescents, GR expression in leukocytes was measured using flow cytometry in response to an acute exercise challenge before and after the exercise training intervention...
August 2017: Pediatric Research
https://www.readbyqxmd.com/read/28760880/estrogen-signaling-contributes-to-sex-differences-in-macrophage-polarization-during-asthma
#4
Aleksander Keselman, Xi Fang, Preston B White, Nicola M Heller
Allergic asthma is a chronic Th2 inflammation in the lungs that constricts the airways and presents as coughing and wheezing. Asthma mostly affects boys in childhood and women in adulthood, suggesting that shifts in sex hormones alter the course of the disease. Alveolar macrophages have emerged as major mediators of allergic lung inflammation in animal models as well as humans. Whether sex differences exist in macrophage polarization and the molecular mechanism(s) that drive differential responses are not well understood...
July 31, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28760845/micro-rna-98-interferes-with-thrombospondin-1-expression-in-peripheral-b-cells-of-patients-with-asthma
#5
Liming Chen, Jianfeng Xu, Xiaoxia Chu, Chenghua Ju
Thrombospondin 1 (TSP1)-producing B cells are an important immune regulatory cell fraction in the body, which are compromised in a number of immune diseases. Micro RNAs (miR) are involved in the immune regulation. This study aims to elucidate the mechanism by which miR-98 interferes with the expression of TSP1 in B cells of the peripheral blood system. In this study, peripheral blood samples were collected from patients with allergic asthma. The B cells were isolated from the blood samples to be analyzed for the expression of miR-98 and TSP1...
July 31, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28759187/a-chinese-herbal-medicine-modified-guomin-decoction-influences-the-differentiation-of-cd4-t-cell-subsets-in-ova-induced-asthmatic-mice
#6
(no author information available yet)
OBJECTIVE: Modified Guomin Decoction (MGD) is an effective Chinese herbal medicine for treatment of various allergic diseases, especially allergic asthma. Its water decoction is conventionally used for treatment of allergic bronchitis in China. Up to date, the underlying mechanisms of this herbal combination have not been fully investigated yet. METHODS: In the in vivo study, the mice were treated with Chicken egg ovalbumin (OVA) and aluminum hydroxide gel as the classic allergic asthma animal model...
July 31, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28756296/pathway-discovery-using-transcriptomic-profiles-in-adult-onset-severe-asthma
#7
Pieter-Paul Hekking, Matt J Loza, Stelios Pavlidis, Bertrand De Meulder, Diane Lefaudeux, Fred Baribaud, Charles Auffray, Ariane H Wagener, Paul Brinkman, Rene Lutter, ArunaT Bansal, Ana R Sousa, Steve Bates, Yannis Pandis, Louise J Fleming, Dominique E Shaw, Stephen J Fowler, Y Guo, Andrea Meiser, Kai Sun, Julie Corfield, Peter Howarth, Elisabeth H Bel, Ian M Adcock, K F Chung, Ratko Djukanovic, Peter J Sterk
RATIONALE: Adult-onset severe asthma is characterized by highly symptomatic disease despite high intensity asthma treatments. Understanding of the underlying pathways of this heterogeneous disease needed for the development of targeted treatments. Gene Set Variation Analysis (GSVA) is a statistical technique to identify gene profiles in heterogeneous samples. OBJECTIVE: To identify gene profiles associated with adult-onset severe asthma. METHODS: This was a cross-sectional, observational study in which adult patients with adult-onset of asthma (defined as starting at ≥18yrs old) as compared to childhood-onset severe asthma (<18 yrs) were selected from the U-BIOPRED cohort...
July 26, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28749975/circulating-micrornas-and-association-with-methacholine-pc20-in-the-childhood-asthma-management-program-camp-cohort
#8
Joshua S Davis, Maoyun Sun, Alvin T Kho, Kip G Moore, Jody M Sylvia, Scott T Weiss, Quan Lu, Kelan G Tantisira
INTRODUCTION: Circulating microRNAs (miRNA) are promising biomarkers for human diseases. Our study hypothesizes that circulating miRNA would reveal candidate biomarkers related to airway hyperresponsiveness (AHR) and provide biologic insights into asthma epigenetic influences. METHODS: Serum samples obtained at randomization for 160 children in the Childhood Asthma Management Program were profiled using a TaqMan miRNA array set. The association of the isolated miRNA with methacholine PC20 was assessed...
2017: PloS One
https://www.readbyqxmd.com/read/28742980/disease-relevant-modifications-of-the-methylome-and-transcriptome-by-particulate-matter-pm2-5-from-biomass-combustion
#9
Katharina Heßelbach, Gwang-Jin Kim, Stephan Flemming, Thomas Häupl, Marc Bonin, Regina Dornhof, Stefan Günther, Irmgard Merfort, Matjaz Humar
Exposure to particulate matter (PM) is recognized as a major health hazard, but molecular responses are still insufficiently described. We analyzed the epigenetic impact of ambient PM2.5 from biomass combustion on the methylome of primary human bronchial epithelial BEAS-2B cells using the Illumina HumanMethylation450 BeadChip. The transcriptome was determined by the Affymetrix HG-U133 Plus 2.0 Array. PM2.5 induced genome wide alterations of the DNA methylation pattern, including differentially methylated CpGs in the promoter region associated with CpG islands...
July 25, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28737212/a-genome-wide-association-study-for-equine-recurrent-airway-obstruction-in-european-warmblood-horses-reveals-a-suggestive-new-quantitative-trait-locus-on-chromosome-13
#10
D Schnider, S Rieder, T Leeb, V Gerber, M Neuditschko
Recurrent airway obstruction (RAO), also known as heaves, is an asthma-like respiratory disease. Its development is strongly influenced by environmental risk factors such as sensitization and exposure to moldy hay, straw bedding and stabling indoors. A hereditary component has been documented in previous studies; however, so far no causative genetic variant that influences the risk of developing RAO has been identified. In this study, we revised an existing dataset and selected 384 horses for genotyping on the Affymetrix high-density equine SNP array...
July 24, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28736268/differential-connectivity-of-gene-regulatory-networks-distinguishes-corticosteroid-response-in-asthma
#11
Weiliang Qiu, Feng Guo, Kimberly Glass, Guo Cheng Yuan, John Quackenbush, Xiaobo Zhou, Kelan G Tantisira
BACKGROUND: Variations in drug response between individuals have prevented us from achieving high drug efficacy in treating many complex diseases, including asthma. Genetics plays an important role in accounting for such inter-individual variations in drug response. However, systematic approaches for addressing how genetic factors and their regulators determine variations in drug response in asthma treatment are lacking. METHODS: We used PANDA (Passing Attributes between Networks for Data Assimilations) to construct the gene regulatory networks associated with good responders and poor responders to inhaled corticosteroids based on a subset of 145 Caucasian asthmatic children who participated in the Childhood Asthma Management Cohort (CAMP)...
July 20, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28733231/tussilagonone-induced-nrf2-pathway-activation-protects-hepg2-cells-from-oxidative-injury
#12
Kyung-Mi Lee, Tae Yeon Kwon, Unwoo Kang, Eun Kyoung Seo, Ji Ho Yun, Chu Won Nho, Yeong Shik Kim
Tussilagonone is a compound derived from the medicinal plant Tussilago farfara L., which is used as a traditional medicine for respiratory diseases, including asthma and pneumonia. Recent reports suggest that tussilagonone exhibits anti-inflammatory effects; however, the scope of protective functions has not been elucidated yet. In this study, we demonstrate that tussilagonone enhances cellular detoxification by increasing quinone reductase activity in Hepa1c1c7 cells. In addition, tussilagonone decreased tert-butyl hydroperoxide(t-BHP)-induced ROS production and cell death, suggesting that it also acts as a potent antioxidant...
July 18, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28729226/solanum-paniculatum-l-decreases-levels-of-inflammatory-cytokines-by-reducing-nfkb-tbet-and-gata3-gene-expression-in-vitro
#13
Raimon Rios, Hugo Bernardino Ferreira da Silva, Norma Vilany Queiroz Carneiro, Anaque de Oliveira Pires, Tamires Cana Brasil Carneiro, Ryan Dos Santos Costa, Cintia Rodrigues Marques, Marta Santos Serafim Machado, Eudes da Silva Velozo, Telma M G da Silva, Tania M S da Silva, Adilva de Souza Conceição, Neuza Maria Alcântara-Neves, Camila Alexandrina Figueiredo
ETHNOPHARMACOLOGICAL RELEVANCE: Solanum paniculatum L., popularly known as jurubeba, is a common subtropical plant from Brazil, Paraguay, Bolivia and Argentina, that is used in folk medicine for the treatment of anemia, gastrointestinal disorders and inflammatory conditions in general. In addition to that, an ethnobotanical survey in "Todos os Santos" Bay have pointed out S. paniculatum as an herb to treat asthma. Previous publications have shown that S. paniculatum possesses antibiotic, antioxidant and modulatory effects on gastric acid secretion; however, its anti-inflammatory potential remains unexplored...
July 18, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28721208/new-perspectives-on-the-regulation-of-type-ii-inflammation-in-asthma
#14
REVIEW
Mireya Becerra-Díaz, Marsha Wills-Karp, Nicola M Heller
Asthma is a chronic inflammatory disease of the lungs which has been thought to arise as a result of inappropriately directed T helper type-2 (Th2) immune responses of the lungs to otherwise innocuous inhaled antigens. Current asthma therapeutics are directed towards the amelioration of downstream consequences of type-2 immune responses (i.e. β-agonists) or broad-spectrum immunosuppression (i.e. corticosteroids). However, few approaches to date have been focused on the primary prevention of immune deviation...
2017: F1000Research
https://www.readbyqxmd.com/read/28711603/mir-139-5p-inhibits-proliferation-and-promoted-apoptosis-of-human-airway-smooth-muscle-cells-by-downregulating-the-brg1-gene
#15
Huanying Zhang, Zhongmei Sun, Lianfeng Yu, Jie Sun
MicroRNAs have emerged as critical regulators in the pathogenesis of asthma. However, the role of microRNAs in asthma needs to be further elucidated. In this study, we found that miR-139-5p was greatly decreased in airway smooth muscle (ASM) cells from asthmatic humans as well as ASM cells stimulated with cytokines. Overexpression of miR-139-5p markedly suppressed ASM cell proliferation and promoted cell apoptosis, whereas knockdown of miR-139-5p had the opposite effect. Further study verified that Brg1, a chromatin remodeling factor, was upregulated in ASM cells treated with cytokines and acted as a direct target of miR-139-5p...
July 12, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28701525/cigarette-smoke-differentially-affects-il-13-induced-gene-expression-in-human-airway-epithelial-cells
#16
Tinne C J Mertens, Anne M van der Does, Loes E Kistemaker, Dennis K Ninaber, Christian Taube, Pieter S Hiemstra
Allergic airways inflammation in asthma is characterized by an airway epithelial gene signature composed of POSTN, CLCA1, and SERPINB2 This Th2 gene signature is proposed as a tool to classify patients with asthma into Th2-high and Th2-low phenotypes. However, many asthmatics smoke and the effects of cigarette smoke exposure on the epithelial Th2 gene signature are largely unknown. Therefore, we investigated the combined effect of IL-13 and whole cigarette smoke (CS) on the Th2 gene signature and the mucin-related genes MUC5AC and SPDEF in air-liquid interface differentiated human bronchial (ALI-PBEC) and tracheal epithelial cells (ALI-PTEC)...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28701507/the-innate-cytokines-il-25-il-33-and-tslp-cooperate-in-the-induction-of-type-2-innate-lymphoid-cell-expansion-and-mucous-metaplasia-in-rhinovirus-infected-immature-mice
#17
Mingyuan Han, Charu Rajput, Jun Y Hong, Jing Lei, Joanna L Hinde, Qian Wu, J Kelley Bentley, Marc B Hershenson
Early-life respiratory viral infection is a risk factor for asthma development. Rhinovirus (RV) infection of 6-d-old mice, but not mature mice, causes mucous metaplasia and airway hyperresponsiveness that are associated with the expansion of lung type 2 innate lymphoid cells (ILC2s) and are dependent on IL-13 and the innate cytokine IL-25. However, contributions of the other innate cytokines, IL-33 and thymic stromal lymphopoietin (TSLP), to the observed asthma-like phenotype have not been examined. We reasoned that IL-33 and TSLP expression are also induced by RV infection in immature mice and are required for maximum ILC2 expansion and mucous metaplasia...
August 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28680329/microrna-20b-promotes-the-accumulation-of-cd11b-ly6g-ly6c-low-myeloid-derived-suppressor-cells-in-asthmatic-mice
#18
Hua Ma, Shujun Guo, Yulan Luo, Yimeng Wang, Helong Wang, Jing He, Jie Tang, Lin Shen, Chuanwang Song
miR-20b is a member of the miR-106a-363 gene cluster, which has been shown to play an important role in a variety of diseases, including cancer, inflammation, and autoimmune diseases. Our previous study indicated that miR-20b has an inhibitory effect on airway inflammation in asthmatic mice, but the exact mechanism is unclear. In this study, we report that the ratio of CD11b+Ly6G+Ly6Clow cells, but not the amount of CD11b+Ly6C+Ly6G- cells, was increased in the lung tissue of asthmatic mice after intranasal instillation with miR-20b mimics, while Th2-type cytokines (interleukin (IL)-4 and IL-13) were significantly decreased in the bronchoalveolar lavage fluid...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/28679952/severe-asthma-in-humans-and-mouse-model-suggests-a-cxcl10-signature-underlies-corticosteroid-resistant-th1-bias
#19
Marc Gauthier, Krishnendu Chakraborty, Timothy B Oriss, Mahesh Raundhal, Sudipta Das, Jie Chen, Rachael Huff, Ayan Sinha, Merritt Fajt, Prabir Ray, Sally E Wenzel, Anuradha Ray
We previously showed that Th1/type 1 inflammation marked by increased IFN-γ levels in the airways can be appreciated in 50% of patients with severe asthma, despite high dose corticosteroid (CS) treatment. We hypothesized that a downstream target of IFN-γ, CXCL10, which recruits Th1 cells via the cognate receptor CXCR3, is an important contributor to Th1high asthma and CS unresponsiveness. We show high levels of CXCL10 mRNA closely associated with IFNG levels in the BAL cells of 50% of severe asthmatics and also in the airways of mice subjected to a severe asthma model, both in the context of high-dose CS treatment...
July 6, 2017: JCI Insight
https://www.readbyqxmd.com/read/28673400/the-environment-epigenome-and-asthma
#20
REVIEW
Ivana V Yang, Catherine A Lozupone, David A Schwartz
Asthma prevalence has been on the increase, especially in North America compared with other continents. However, the prevalence of asthma differs worldwide, and in many countries the prevalence is stable or decreasing. This highlights the influence of environmental exposures, such as allergens, air pollution, and the environmental microbiome, on disease etiology and pathogenesis. The epigenome might provide the unifying mechanism that translates the influence of environmental exposures to changes in gene expression, respiratory epithelial function, and immune cell skewing that are hallmarks of asthma...
July 2017: Journal of Allergy and Clinical Immunology
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