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Asthma AND "gene expression"

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https://www.readbyqxmd.com/read/29350877/effects-of-human-rhinovirus-on-epithelial-barrier-integrity-and-function-in-children-with-asthma
#1
Kevin Looi, Alysia G Buckley, Paul J Rigby, Luke W Garratt, Thomas Iosifidis, Graeme R Zosky, Alexander N Larcombe, Francis J Lannigan, Kak-Ming Ling, Kelly M Martinovich, Elizabeth Kicic-Starcevich, Nicole C Shaw, Erika N Sutanto, Darryl A Knight, Anthony Kicic, Stephen M Stick
BACKGROUND: Bronchial epithelial tight junctions (TJ) have been extensively assessed in healthy airway epithelium. However, no studies have yet assessed the effect of human rhinovirus (HRV) infection on the expression and resultant barrier function in epithelial tight junctions (TJ) in childhood asthma. OBJECTIVES: To investigate the impact of HRV infection on airway epithelial TJ expression and barrier function in airway epithelial cells (AEC) of children with and without asthma...
January 19, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29334241/transcriptional-regulation-on-the-gene-expression-signature-in-combined-allergic-rhinitis-and-asthma-syndrome
#2
Zhengdao Mao, Yujia Shi, Qi Cao, Yi Chen, Yun Sun, Zhiguang Liu, Qian Zhang, Mao Huang
AIM: This study was intended to evaluate transcriptional regulation of gene expression signatures in combined allergic rhinitis and asthma syndrome (CARAS). MATERIALS & METHODS: The blood samples of three patients with CARAS, three patients with allergic rhinitis and three normal controls were obtained. The cuffdiff, miRDeep2 and DEGseq were used to quantify the expression of genes and miRNAs, respectively. And p-value < 0.01 and false discovery rate < 0...
January 15, 2018: Epigenomics
https://www.readbyqxmd.com/read/29330013/a-functional-splicing-variant-associated-with-decreased-asthma-risk-abolishes-the-ability-of-gasdermin-b-gsmdb-to-induce-epithelial-cell-pyroptosis
#3
Ronald A Panganiban, Maoyun Sun, Amber Dahlin, Hae-Ryung Park, Mengyuan Kan, Blanca E Himes, Jennifer A Mitchel, Carlos Iribarren, Eric Jorgenson, Scott H Randell, Elliot Israel, Kelan Tantisira, Stephanie Shore, Jin-Ah Park, Scott T Weiss, Ann Chen Wu, Quan Lu
BACKGROUND: Genetic variants in the chromosomal region 17q21 are consistently associated with asthma. However, mechanistic studies have not yet linked any of the associated variants to a function that could influence asthma, and as a result, the identity of the asthma gene(s) remains elusive. OBJECTIVES: We sought to identify and characterize functional variants in the 17q21 locus. METHODS: We used the Exome Aggregation Consortium (ExAC) browser to identify coding (amino acid-changing) variants in the 17q21 locus...
January 9, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29329322/methylene-tetrahydrofolate-reductase-contributes-to-allergic-airway-disease
#4
Kenneth R Eyring, Brent S Pedersen, Kenneth N Maclean, Sally P Stabler, Ivana V Yang, David A Schwartz
RATIONALE: Environmental exposures strongly influence the development and progression of asthma. We have previously demonstrated that mice exposed to a diet enriched with methyl donors during vulnerable periods of fetal development can enhance the heritable risk of allergic airway disease through epigenetic changes. There is conflicting evidence on the role of folate (one of the primary methyl donors) in modifying allergic airway disease. OBJECTIVES: We hypothesized that blocking folate metabolism through the loss of methylene-tetrahydrofolate reductase (Mthfr) activity would reduce the allergic airway disease phenotype through epigenetic mechanisms...
2018: PloS One
https://www.readbyqxmd.com/read/29307657/a-decade-of-research-on-the-17q12-21-asthma-locus-piecing-together-the-puzzle
#5
Michelle M Stein, Emma E Thompson, Nathan Schoettler, Britney A Helling, Kevin M Magnaye, Catherine Stanhope, Catherine Igartua, Andréanne Morin, Charles Washington, Dan Nicolae, Klaus Bønnelykke, Carole Ober
Chromosome 17q12-21 remains the most highly replicated and significant asthma locus. Genotypes in the core region defined by the first GWAS correlate with expression of two genes, ORMDL3 and GSDMB, making these prime candidate asthma genes, although recent studies have implicated GSDMA distal to and PGAP3 proximal to the core region as independent loci. We review here 10 years of studies on the 17q12-21 locus and suggest that genotype-specific risks for asthma at the proximal and distal loci are not specific to early onset asthma and mediated by PGAP3, ORMDL3, and/or GSDMA expression...
January 4, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29305433/pinx1-and-tert-are-required-for-tnf-%C3%AE-induced-airway-smooth-muscle-chemokine-gene-expression
#6
Karl Deacon, Alan J Knox
Airway smooth muscle (ASM) cells contribute to asthmatic lung pathology with chemokine hypersecretion and increased ASM cell mass. With little recent progress in the development of asthma therapies, a greater understanding of lung inflammation mechanisms has become a priority. Chemokine gene expression in ASM cells is dependent upon NF-κB transcription factor activity. The telomerase/shelterin complex maintains chromosomal telomere ends during cell division. Telomerase is a possible cofactor for NF-κB activity, but its role in NF-κB activity in airway tissue inflammation is not known...
January 5, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29301585/a-randomised-pragmatic-trial-of-corticosteroid-optimization-in-severe-asthma-using-a-composite-biomarker-algorithm-to-adjust-corticosteroid-dose-versus-standard-care-study-protocol-for-a-randomised-trial
#7
Catherine E Hanratty, John G Matthews, Joseph R Arron, David F Choy, Ian D Pavord, P Bradding, Christopher E Brightling, Rekha Chaudhuri, Douglas C Cowan, Ratko Djukanovic, Nicola Gallagher, Stephen J Fowler, Tim C Hardman, Tim Harrison, Cécile T Holweg, Peter H Howarth, James Lordan, Adel H Mansur, Andrew Menzies-Gow, Sofia Mosesova, Robert M Niven, Douglas S Robinson, Dominick E Shaw, Samantha Walker, Ashley Woodcock, Liam G Heaney
BACKGROUND: Patients with difficult-to-control asthma consume 50-60% of healthcare costs attributed to asthma and cost approximately five-times more than patients with mild stable disease. Recent evidence demonstrates that not all patients with asthma have a typical type 2 (T2)-driven eosinophilic inflammation. These asthmatics have been called 'T2-low asthma' and have a minimal response to corticosteroid therapy. Adjustment of corticosteroid treatment using sputum eosinophil counts from induced sputum has demonstrated reduced severe exacerbation rates and optimized corticosteroid dose...
January 4, 2018: Trials
https://www.readbyqxmd.com/read/29284473/involvements-of-p38-mapk-and-oxidative-stress-in-the-ozone-induced-enhancement-of-ahr-and-pulmonary-inflammation-in-an-allergic-asthma-model
#8
Aihua Bao, Hong Yang, Jie Ji, Yuqin Chen, Wuping Bao, Feng Li, Min Zhang, Xin Zhou, Qiang Li, Suqin Ben
BACKGROUND: Exposure to ambient ozone (O3) increases the susceptivity to allergens and triggers exacerbations in patients with asthma. However, the detailed mechanisms of action for O3 to trigger asthma exacerbations are still unclear. METHODS: An ovalbumin (OVA)-established asthmatic mouse model was selected to expose to filtered air (OVA-model) or 1.0 ppm O3 (OVA-O3 model) during the process of OVA challenge. Next, the possible involvements of p38 MAPK and oxidative stress in the ozone actions on the asthma exacerbations were investigated on the mice of OVA-O3 model by treating them with SB239063 (a p38 MAPK inhibitor), and/or the α-tocopherol (antioxidant)...
December 29, 2017: Respiratory Research
https://www.readbyqxmd.com/read/29250067/group-2-innate-lymphoid-cells-exhibit-a-dynamic-phenotype-in-allergic-airway-inflammation
#9
Bobby W S Li, Ralph Stadhouders, Marjolein J W de Bruijn, Melanie Lukkes, Dior M J M Beerens, Maarten D Brem, Alex KleinJan, Ingrid Bergen, Heleen Vroman, Mirjam Kool, Wilfred F J van IJcken, Tata Nageswara Rao, Hans Jörg Fehling, Rudi W Hendriks
Group 2 innate lymphoid cells (ILC2) are implicated in allergic asthma as an early innate source of the type 2 cytokines IL-5 and IL-13. However, their induction in house dust mite (HDM)-mediated airway inflammation additionally requires T cell activation. It is currently unknown whether phenotypic differences exist between ILC2s that are activated in a T cell-dependent or T cell-independent fashion. Here, we compared ILC2s in IL-33- and HDM-driven airway inflammation. Using flow cytometry, we found that surface expression levels of various markers frequently used to identify ILC2s were dependent on their mode of activation, highly variable over time, and differed between tissue compartments, including bronchoalveolar lavage (BAL) fluid, lung, draining lymph nodes, and spleen...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29242385/differential-regulation-of-zfp30-expression-in-murine-airway-epithelia-through-altered-binding-of-zfp148-to-rs51434084
#10
Lucas T Laudermilk, Joseph M Thomas, Samir N Kelada
Neutrophil chemotaxis to the airways is a key aspect of host response to microbes and a feature of multiple pulmonary diseases including asthma. Tight regulation of this recruitment is critical to prevent unwanted host tissue damage and inflammation. Using a mouse (Mus musculus) model of asthma applied to the Collaborative Cross (CC), we previously identified a lung gene expression quantitative trait locus (eQTL) for Zinc finger protein 30 (Zfp30) that was also a QTL for neutrophil recruitment and the hallmark neutrophil chemokine CXCL1...
December 14, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29242170/a-shift-in-the-il-6-stat3-signalling-pathway-imbalance-towards-the-shp2-pathway-in-severe-asthma-results-in-reduced-proliferation-process
#11
Ikhlass Haj Salem, Sophie Plante, Abdelilah S Gounni, Mahmoud Rouabhia, Jamila Chakir
BACKGROUND: Bronchial fibroblasts are the main structural cells responsible for extracellular matrix production and turnover in lung tissue. They play a key role in airway remodelling in asthma through different cytokines including interleukin (IL-6). OBJECTIVE: To decipher IL-6 signalling in bronchial fibroblasts obtained from severe eosinophilic asthmatics compared to mild asthmatics and healthy controls. METHODS: Human bronchial fibroblasts were isolated from bronchial biopsies of mild and severe eosinophilic asthmatics and non-atopic healthy controls...
December 11, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/29231896/differential-expression-of-serum-micrornas-supports-cd4%C3%A2-%C2%BA-t-cell-differentiation-into-th2-th17-cells-in-severe-equine-asthma
#12
Alicja Pacholewska, Matthias F Kraft, Vincent Gerber, Vidhya Jagannathan
MicroRNAs (miRNAs) regulate post-transcriptional gene expression and may be exported from cells via exosomes or in partnership with RNA-binding proteins. MiRNAs in body fluids can act in a hormone-like manner and play important roles in disease initiation and progression. Hence, miRNAs are promising candidates as biomarkers. To identify serum miRNA biomarkers in the equine model of asthma we investigated small RNA derived from the serum of 34 control and 37 asthmatic horses. These samples were used for next generation sequencing, novel miRNA identification and differential miRNA expression analysis...
December 12, 2017: Genes
https://www.readbyqxmd.com/read/29228930/gene-expression-analysis-in-asthma-using-a-targeted-multiplex-array
#13
Christopher D Pascoe, Ma'en Obeidat, Bryna A Arsenault, Yunlong Nie, Stephanie Warner, Dorota Stefanowicz, Samuel J Wadsworth, Jeremy A Hirota, S Jasemine Yang, Delbert R Dorscheid, Chris Carlsten, Tillie L Hackett, Chun Y Seow, Peter D Paré
BACKGROUND: Gene expression changes in the structural cells of the airways are thought to play a role in the development of asthma and airway hyperresponsiveness. This includes changes to smooth muscle contractile machinery and epithelial barrier integrity genes. We used a targeted gene expression arrays to identify changes in the expression and co-expression of genes important in asthma pathology. METHODS: RNA was isolated from the airways of donor lungs from 12 patients with asthma (8 fatal) and 12 non-asthmatics controls and analyzed using a multiplexed, hypothesis-directed platform to detect differences in gene expression...
December 11, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29204432/caspase-1-deficiency-reduces-eosinophilia-and-interleukin-33-in-an-asthma-exacerbation-model
#14
Mandy Menzel, Hamid Akbarshahi, Irma Mahmutovic Persson, Manoj Puthia, Leif Bjermer, Lena Uller
Rhinovirus infections are common triggers of asthma exacerbations. Viruses can activate the inflammasome, resulting in processing and activation of caspase-1. This recruitment triggers production of interleukin (IL)-1β and IL-18, which have been implicated in asthma. Elucidating the involvement of the inflammasome and its compartments, such as caspase-1, in asthma exacerbations is warranted. Gene expression of caspase-1 was measured in rhinovirus-infected primary bronchial epithelial cells of asthmatic and healthy donors 24 h post-infection...
October 2017: ERJ Open Research
https://www.readbyqxmd.com/read/29198875/gancao-gansui-combination-impacts-gut-microbiota-diversity-and-related-metabolic-functions
#15
Jingao Yu, Jianming Guo, Weiwei Tao, Pei Liu, Erxin Shang, Zhenhua Zhu, Xiuhe Fan, Juan Shen, Yongqing Hua, Kevin Yue Zhu, Yuping Tang, Jin-Ao Duan
ETHNOPHARMACOLOGICAL RELEVANCE: The theory of "eighteen incompatible medicaments" (EIM) in traditional Chinese medicine (TCM) is the most representative case of herbal-herbal interactions. Gancao and Gansui are one of the incompatible herbal pairs in EIM. Gancao, also known as "licorice", is the most frequently used Chinese herb or food additive. Gansui, the root of Euphorbia kansui T.P. Wang, is another famous Chinese herb usually used to treat edema, ascites and asthma but could induce gastrointestinal (GI) tract irritation...
November 30, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29186064/airway-mucus-and-asthma-the-role-of-muc5ac-and-muc5b
#16
REVIEW
Luke R Bonser, David J Erle
Asthma is characterized by mucus abnormalities. Airway epithelial hyperplasia and metaplasia result in changes in stored and secreted mucin and the production of a pathologic mucus gel. Mucus transport is impaired, culminating in mucus plugging and airway obstruction-a major cause of morbidity in asthma. The polymeric mucins MUC5AC and MUC5B are integral components of airway mucus. MUC5AC and MUC5B gene expression is altered in asthma, and recent work sheds light on their contribution to asthma pathogenesis...
November 29, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29183288/arginase-1-deletion-in-myeloid-cells-affects-the-inflammatory-response-in-allergic-asthma-but-not-lung-mechanics-in-female-mice
#17
Roy H E Cloots, Selvakumari Sankaranarayanan, Matthew E Poynter, Els Terwindt, Paul van Dijk, Wouter H Lamers, S Eleonore Köhler
BACKGROUND: (Over-)expression of arginase may limit local availability of arginine for nitric oxide synthesis. We investigated the significance of arginase1 (ARG1) for the development of airway hyperresponsiveness (AHR) and lung inflammation in female mice with ovalbumin (OVA)-induced allergic asthma. METHODS: Arg1 was ablated in the lung by crossing Arg1 fl/fl and Tie2Cre tg/- mice. OVA sensitization and challenge were conducted, and AHR to methacholine was determined using the Flexivent system...
November 28, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29146235/macrophages-their-role-activation-and-polarization-in-pulmonary-diseases
#18
REVIEW
Shweta Arora, Kapil Dev, Beamon Agarwal, Pragnya Das, Mansoor Ali Syed
Macrophages, circulating in the blood or concatenated into different organs and tissues constitute the first barrier against any disease. They are foremost controllers of both innate and acquired immunity, healthy tissue homeostasis, vasculogenesis and congenital metabolism. Two hallmarks of macrophages are diversity and plasticity due to which they acquire a wobbling array of phenotypes. These phenotypes are appropriately synchronized responses to a variety of different stimuli from either the tissue microenvironment or - microbes or their products...
November 12, 2017: Immunobiology
https://www.readbyqxmd.com/read/29137293/identification-of-novel-genetic-regulations-associated-with-airway-epithelial-homeostasis-using-next-generation-sequencing-data-and-bioinformatics-approaches
#19
Chau-Chyun Sheu, Ming-Ju Tsai, Feng-Wei Chen, Kuo-Feng Chang, Wei-An Chang, Inn-Wen Chong, Po-Lin Kuo, Ya-Ling Hsu
Airway epithelial cells play important roles in airway remodeling. Understanding gene regulations in airway epithelial homeostasis may provide new insights into pathogenesis and treatment of asthma. This study aimed to combine gene expression (GE) microarray, next generation sequencing (NGS), and bioinformatics to explore genetic regulations associated with airway epithelial homeostasis. We analyzed expression profiles of mRNAs (GE microarray) and microRNAs (NGS) in normal and asthmatic bronchial epithelial cells, and identified 9 genes with potential microRNA-mRNA interactions...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29134693/microglia-from-offspring-of-dams-with-allergic-asthma-exhibit-epigenomic-alterations-in-genes-dysregulated-in-autism
#20
Annie Vogel Ciernia, Milo Careaga, Janine M LaSalle, Paul Ashwood
Dysregulation in immune responses during pregnancy increases the risk of a having a child with an autism spectrum disorder (ASD). Asthma is one of the most common chronic diseases among pregnant women, and symptoms often worsen during pregnancy. We recently developed a mouse model of maternal allergic asthma (MAA) that induces changes in sociability, repetitive, and perseverative behaviors in the offspring. Since epigenetic changes help a static genome adapt to the maternal environment, activation of the immune system may epigenetically alter fetal microglia, the brain's resident immune cells...
November 14, 2017: Glia
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