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Asthma AND "gene expression"

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https://www.readbyqxmd.com/read/28424691/increased-autophagy-related-5-gene-expression-is-associated-with-collagen-expression-in-the-airways-of-refractory-asthmatics
#1
Audrey H Poon, David F Choy, Fazila Chouiali, Rakhee K Ramakrishnan, Bassam Mahboub, Severine Audusseau, Andrea Mogas, Jeffrey M Harris, Joseph R Arron, Catherine Laprise, Qutayba Hamid
BACKGROUND: Fibrosis, particularly excessive collagen deposition, presents a challenge for treating asthmatic individuals. At present, no drugs can remove or reduce excessive collagen in asthmatic airways. Hence, the identification of pathways involved in collagen deposition would help to generate therapeutic targets to interfere with the airway remodeling process. Autophagy, a cellular degradation process, has been shown to be dysregulated in various fibrotic diseases, and genetic association studies in independent human populations have identified autophagy-related 5 (ATG5) to be associated with asthma pathogenesis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28397284/altered-fatty-acid-metabolism-and-reduced-stearoyl-coenzyme-a-desaturase-activity-in-asthma
#2
N Rodriguez-Perez, E Schiavi, R Frei, R Ferstl, P Wawrzyniak, S Smolinska, M Sokolowska, N A Sievi, M Kohler, P Schmid-Grendelmeier, D Michalovich, K D Simpson, E M Hessel, M Jutel, M Martin-Fontecha, O Palomares, C A Akdis, L O'Mahony
BACKGROUND: Fatty acids and lipid mediator signaling play an important role in the pathogenesis of asthma, yet this area remains largely under-explored. The aims of this study were (i) to examine fatty acid levels and their metabolism in obese and non-obese asthma patients and (ii) to determine the functional effects of altered fatty acid metabolism in experimental models. METHODS: Medium- and long-chain fatty acid levels were quantified in serum from 161 human volunteers by LC/MS...
April 11, 2017: Allergy
https://www.readbyqxmd.com/read/28379462/human-metapneumovirus-infection-in-chronic-obstructive-pulmonary-disease-impact-of-glucocorticosteroids-and-interferon
#3
Keiko Kan-O, Ruben Ramirez, Martin I MacDonald, Michael Rolph, Penny A Rudd, Kirsten M Spann, Suresh Mahalingam, Philip G Bardin, Belinda J Thomas
Background.: Human metapneumovirus (hMPV) infection is implicated in exacerbations of asthma and chronic obstructive pulmonary disease (COPD). Research into the pathogenesis of infection is restricted to animal models and information about hMPV replication and inflammatory and immune responses in human disease is limited. Methods.: Human primary bronchial epithelial cells (PBEC) from healthy, asthmatic and COPD subjects were infected with hMPV, with or without glucocorticosteroids (GCS) exposure...
April 4, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28360114/ror%C3%AE-dependent-type-2-innate-lymphoid-cells-are-required-and-sufficient-for-mucous-metaplasia-in-immature-mice
#4
Charu Rajput, Tracy X Cui, Mingyuan Han, Jing Lei, Joanna L Hinde, Qian Wu, J Kelley Bentley, Marc B Hershenson
Early-life wheezing associated respiratory tract infection by rhinovirus (RV) is considered a risk factor for asthma development. We have shown that RV infection of 6 day-old BALB/c mice, but not mature mice, induces an asthma-like phenotype which is associated with an increase in the population of type 2 innate lymphoid cells (ILC2s) and dependent on IL-13 and IL-25. We hypothesize that ILC2s are required and sufficient for development of the asthma-like phenotype in immature mice. Mice were infected with RV1B on day 6 of life and treated with vehicle or a chemical inhibitor of retinoic acid receptor-related orphan receptor (ROR)-α, SR3335 (15 mg/kg/day intraperitoneally for 7 days)...
March 30, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28341820/il-23-gene-and-protein-expression-in-childhood-asthma
#5
Soheila Alyasin, Reza Amin, Ali Fazel, Mohammad Hossein Karimi, Seyed Hesamedin Nabavizadeh, Hossein Esmaeilzadeh, Maryam Babaei
BACKGROUND: Asthma is the chronic inflammation of airways characterized by eosinophilic infiltration, mucus overproduction, airway hyper-responsiveness and airway remodeling. These changes are induced mostly by cytokines which are produced by T helper (Th) 2 cells. Recently, the role of interleukin-23 (IL-23) in the pathogenesis of adult allergic asthma has been studied. OBJECTIVE: To explore IL-23 serum levels and its expression in persistent asthma compared with healthy children younger than five years old...
March 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28328242/human-airway-epithelial-cells-direct-significant-rhinovirus-replication-in-monocytic-cells-by-enhancing-icam1-expression
#6
Xu Zhou, Lingxiang Zhu, Rosa Lizarraga, Yin Chen
Human rhinovirus (RV) is the major cause of common cold, and it also plays a significant role in asthma and asthma exacerbation. Airway epithelium is the primary site of RV infection and production. In contrast, monocytic cells (e.g. monocytes and macrophages) are believed to be non-permissive for RV replication. Instead, RV has been shown to modulate inflammatory gene expressions in these cells via a replication-independent mechanism. In the present study, RV16 (a major-group RV) replication was found to be significantly enhanced in monocytes when co-cultivated with airway epithelial cells...
March 22, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28323055/a-6-alkylsalicylate-histone-acetyltransferase-inhibitor-inhibits-histone-acetylation-and-pro-inflammatory-gene-expression-in-murine-precision-cut-lung-slices
#7
Thea van den Bosch, Niek G J Leus, Hannah Wapenaar, Alexander Boichenko, Jos Hermans, Rainer Bischoff, Hidde J Haisma, Frank J Dekker
Lysine acetylations are post-translational modifications of cellular proteins, that are crucial in the regulation of many cellular processes. Lysine acetylations on histone proteins are part of the epigenetic code regulating gene transcription and are installed by histone acetyltransferases. Observations that inflammatory lung diseases, such as asthma and chronic obstructive pulmonary disease, are characterized by increased histone acetyltransferase activity indicate that development of small molecule inhibitors for these enzymes might be a valuable approach towards new therapies for these diseases...
March 16, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28320933/activin-a-co-opts-irf4-and-ahr-signaling-to-induce-human-regulatory-t-cells-that-restrain-asthmatic-responses
#8
Sofia Tousa, Maria Semitekolou, Ioannis Morianos, Aggelos Banos, Aikaterini I Trochoutsou, Tess M Brodie, Nikolaos Poulos, Konstantinos Samitas, Maria Kapasa, Dimitris Konstantopoulos, Giannis Paraskevopoulos, Mina Gaga, Catherine M Hawrylowicz, Federica Sallusto, Georgina Xanthou
Type 1 regulatory T (Tr1) cells play a pivotal role in restraining human T-cell responses toward environmental allergens and protecting against allergic diseases. Still, the precise molecular cues that underlie their transcriptional and functional specification remain elusive. Here, we show that the cytokine activin-A instructs the generation of CD4(+) T cells that express the Tr1-cell-associated molecules IL-10, inducible T-Cell costimulator (ICOS), lymphocyte activation gene 3 protein (LAG-3), and CD49b, and exert strongly suppressive functions toward allergic responses induced by naive and in vivo-primed human T helper 2 cells...
April 4, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28295446/a-recombinant-cystatin-from-ascaris-lumbricoides-attenuates-inflammation-of-dss-induced-colitis
#9
S Coronado, L Barrios, J Zakzuk, R Regino, V Ahumada, L Franco, Y Ocampo, L Caraballo
Helminthiasis may ameliorate inflammatory diseases, such as inflammatory bowel disease and asthma. Information about immunomodulators from Ascaris lumbricoides is scarce, but could be important considering the co-evolutionary relationships between helminths and humans. We evaluated the immunomodulatory effects of a recombinant cystatin from A. lumbricoides on an acute model of dextran sodium sulphate (DSS)-induced colitis in mice. From an A. lumbricoides cDNA library, we obtained a recombinant cystatin (rAl-CPI)...
March 10, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28293931/investigation-of-the-possible-role-of-the-hippo-yap1-pathway-in-asthma-and-allergy
#10
Lili E Fodor, András Gézsi, Ldikó Ungvári, Agnes F Semsei, Zsófia Gál, Adrienne Nagy, Gabriella Gálffy, Lilla Tamási, András Kiss, Péter Antal, Csaba Szalai
PURPOSE: Several lines of evidence indicate that the Hippo/Yes-associated protein 1 (YAP1) pathways might play a role in the pathogenesis of asthma. To investigate the possible role of the Hippo/YAP1 pathway in the pathogenesis of asthma or its phenotypes. METHODS: The levels of gene expressions of the members of the Hippo/YAP1 were compared. The presence of the proteins of the YAP1 and FRMD6 were analyzed with Western blot in induced sputum of 18 asthmatic subjects and 10 control subjects...
May 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28275137/a-ceacam6-high-airway-neutrophil-phenotype-and-ceacam6-high-epithelial-cells-are-features-of-severe-asthma
#11
Aarti Shikotra, David F Choy, Salman Siddiqui, Greer Arthur, Deepti R Nagarkar, Guiquan Jia, Adam K A Wright, Chandra M Ohri, Emma Doran, Claire A Butler, Beverley Hargadon, Alexander R Abbas, Janet Jackman, Lawren C Wu, Liam G Heaney, Joseph R Arron, Peter Bradding
Severe asthma represents a major unmet clinical need; understanding the pathophysiology is essential for the development of new therapies. Using microarray analysis, we previously found three immunological clusters in asthma: Th2-high, Th17-high, and Th2/17-low. Although new therapies are emerging for Th2-high disease, identifying molecular pathways in Th2-low disease remains an important goal. Further interrogation of our previously described microarray dataset revealed upregulation of gene expression for carcinoembryonic Ag cell adhesion molecule (CEACAM) family members in the bronchi of patients with severe asthma...
March 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28260017/d-limonene-exhibits-anti-inflammatory-and-antioxidant-properties-in-an-ulcerative-colitis-rat-model-via-regulation-of-inos-cox-2-pge2-and-erk-signaling-pathways
#12
Lihua Yu, Jing Yan, Zhiguang Sun
D-limonene has been demonstrated to have important immunomodulatory properties, including antitumor effects, and may alleviate asthma and allergies. In the present study, the anti‑inflammatory effects of D‑limonene were investigated in an ulcerative colitis (UC) rat model. Healthy male Sprague‑Dawley rats were randomly divided into control, untreated UC, and treatment with 50 or 100 mg/kg D‑limonene UC groups. In UC rats, disease activity and colonic mucosa damage were significantly reduced by the anti‑inflammatory effects of D‑limonene, via suppression of matrix metalloproteinase (MMP)‑2 and ‑9 gene expression...
April 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28237418/micrornas-in-lung-development-and-disease
#13
REVIEW
Dustin Ameis, Naghmeh Khoshgoo, Barbara M Iwasiow, Phillip Snarr, Richard Keijzer
MicroRNAs (miRNAs) are small (∼22 nucleotides), non-coding RNA molecules that regulate gene expression post-transcriptionally by inhibiting target mRNAs. Research into the roles of miRNAs in lung development and disease is at the early stages. In this review, we discuss the role of miRNAs in pediatric respiratory disease, including cystic fibrosis, asthma, and bronchopulmonary dysplasia.
March 2017: Paediatric Respiratory Reviews
https://www.readbyqxmd.com/read/28229452/expression-levels-of-transcription-factor-pu-1-and-interleukin-9-in-atopic-dermatitis-and-their-relation-to-disease-severity-and-eruption-types
#14
Ashraf M Hamza, Salma S Omar, Reham A H Abo El-Wafa, Marwa J Elatrash
BACKGROUND: The role of immunological factors in atopic dermatitis (AD) pathogenesis is well established. T-helper (TH) cells are central in AD pathogenesis. A relatively new subset of T cells, Th9 cells, was shown to be involved in the development of allergic asthma and allergic rhinitis, while its role in AD is still to be investigated. This study aimed to measure gene expression levels of interleukin-9 (IL-9) and PU.1, and to examine relationships with disease severity, serum IgE, and eruption types in AD patients...
February 22, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28223794/airway-gene-expression-of-il-1-pathway-mediators-predicts-exacerbation-risk-in-obstructive-airway-disease
#15
Katherine J Baines, Juan-Juan Fu, Vanessa M McDonald, Peter G Gibson
BACKGROUND: Exacerbations of asthma and COPD are a major cause of morbidity and mortality and are responsible for significant health care costs. This study further investigates interleukin (IL)-1 pathway activation and its relationship with exacerbations of asthma and COPD. METHODS: In this prospective cohort study, 95 participants with stable asthma (n=35) or COPD (n=60) were recruited and exacerbations recorded over the following 12 months. Gene expressions of IL-1 pathway biomarkers, including the IL-1 receptors (IL1R1, IL1R2, and IL1RN), and signaling molecules (IRAK2, IRAK3, and PELI1), were measured in sputum using real-time quantitative polymerase chain reaction...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28219384/clarithromycin-attenuates-il-13-induced-periostin-production-in-human-lung-fibroblasts
#16
Kosaku Komiya, Shoichiro Ohta, Kazuhiko Arima, Masahiro Ogawa, Shoichi Suzuki, Yasutaka Mitamura, Satoshi Nunomura, Yasuhiro Nanri, Tomohito Yoshihara, Atsushi Kawaguchi, Jun-Ichi Kadota, Bruce K Rubin, Kenji Izuhara
BACKGROUND: Periostin is a biomarker indicating the presence of type 2 inflammation and submucosal fibrosis; serum periostin levels have been associated with asthma severity. Macrolides have immunomodulatory effects and are considered a potential therapy for patients with severe asthma. Therefore, we investigated whether macrolides can also modulate pulmonary periostin production. METHODS: Using quantitative PCR and ELISA, we measured periostin production in human lung fibroblasts stimulated by interleukin-13 (IL-13) in the presence of two 14-member-ring macrolides-clarithromycin or erythromycin-or a 16-member-ring macrolide, josamycin...
February 20, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28205598/lyn-regulates-mucus-secretion-and-muc5ac-via-the-stat6-signaling-pathway-during-allergic-airway-inflammation
#17
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
#18
C Malmhäll, K Johansson, C Winkler, S Alawieh, L Ekerljung, M Rådinger
We and others have previously identified microRNAs (miRNAs) with pathological roles in animal models of asthma, where miR-146a and miR-155 have been described to play important roles in inflammatory responses. To date, few studies have investigated miRNA expression in human asthmatics. In the current study, significantly lower levels of miR-155 were detected in cell-free sputum from allergic asthmatics compared to healthy controls. Induced sputum isolated from allergic asthmatics in and out of pollen season revealed that miR-155 expression, but not miR-146a, is reduced in lymphocytes in season compared to post-season...
April 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28192616/association-of-ormdl3-with-rhinovirus-induced-endoplasmic-reticulum-stress-and-type-i-interferon-responses-in-human-leucocytes
#19
Y-P Liu, V Rajamanikham, M Baron, S Patel, S K Mathur, E A Schwantes, C Ober, D J Jackson, J E Gern, R F Lemanske, J 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 remodelling and hyperresponsiveness. 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...
March 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28183434/multigenerational-cohorts-in-patients-with-asthma-and-allergy
#20
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
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