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Asthma bronchiale

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https://www.readbyqxmd.com/read/28527151/association-of-the-mir-196a2-mir-146a-and-mir-499-polymorphisms-with-asthma-phenotypes-in-a-korean-population
#1
Hoang Kim Tu Trinh, Duy Le Pham, Su-Chin Kim, Ri-Yeon Kim, Hae-Sim Park, Seung-Hyun Kim
BACKGROUND: MicroRNAs (miRNAs) modulate expressions of inflammatory genes, thereby regulating inflammatory responses. Single nucleotide polymorphisms (SNPs) in miRNAs could affect their efficiency in binding to messenger RNAs (mRNAs). OBJECTIVE: We investigated the associations of miRNA SNPs with asthma phenotypes. miR-196a2 (rs11614913 T>C), miR-146a (rs2910164 C>G), and miR-499 (rs3746444 A>G) were genotyped in 347 asthma patients and 172 normal healthy controls (NCs)...
May 19, 2017: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/28526682/aeroallergens-induce-reactive-oxygen-species-production-and-dna-damage-and-dampen-antioxidant-responses-in-bronchial-epithelial-cells
#2
Tze Khee Chan, W S Daniel Tan, Hong Yong Peh, W S Fred Wong
Exposure to environmental allergens is a major risk factor for asthma development. Allergens possess proteolytic activity that is capable of disrupting the airway epithelium. Although there is increasing evidence pointing to asthma as an epithelial disease, the underlying mechanism that drives asthma has not been fully elucidated. In this study, we investigated the direct DNA damage potential of aeroallergens on human bronchial epithelial cells and elucidated the mechanisms mediating the damage. Human bronchial epithelial cells, BEAS-2B, directly exposed to house dust mites (HDM) resulted in enhanced DNA damage, as measured by the CometChip and the staining of DNA double-strand break marker, γH2AX...
May 19, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28516728/increased-heterogeneity-of-airway-calibre-in-adult-rats-after-hypoxia-induced-intrauterine-growth-restriction
#3
Kimberley C W Wang, Jude S Morton, Sandra T Davidge, Alexander N Larcombe, Alan L James, Graham M Donovan, Peter B Noble
BACKGROUND AND OBJECTIVE: Intrauterine growth restriction (IUGR) is associated with asthma development. We hypothesized that IUGR disrupts airway development leading to postnatal structural abnormalities of the airway that predispose to disease. This study therefore examined structural changes to the airway and lung in a rat model of maternal hypoxia-induced IUGR. METHODS: Pregnant rats were housed under hypoxic conditions (11.5% O2 ) from gestational days (GDs) 13 to 20 (pseudoglandular-canalicular stages, i...
May 17, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28515405/a-case-of-bronchial-asthma-with-hypereosinophilia-with-effective-saibokutou-therapy
#4
Takahiro Tsuburai, Yousuke Kamide, Yuto Nakamura, Yasuhiro Tomita, Yuto Hamada, Kentaro Watai, Hiroaki Hayashi, Kiyoshi Sekiya, Chihiro Mitsui, Yuma Fukutomi, Akio Mori, Masami Taniguchi
A 42 year old woman visited on our hospital because of cough, sputum, pruritus and erythema. She showed peripheral blood eosinophilia, high level of FENO, bronchial hyperresponsiveness. Diagnosis of bronchial asthma and atopic dermatitis was made, but she rejected therapy except for Saibokutou, a Kampo herbal medicine. After 1 year, her symptoms and her laboratory data were improved.
2017: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/28506728/-the-effects-of-inhaled-steroids-withdrawal-in-copd
#5
G Jebrak, I Honore, P Serrier, J Dumoulin, P Terrioux, F Soyez, C Maurer, G Mangiapan, M Febvre, L-J Couderc, J-M Braun, T Chinet
The key pathophysiological feature of chronic obstructive pulmonary disease (COPD) is an abnormal inflammatory bronchial reaction after inhalation of toxic substances. The priority is the avoidance of such toxic inhalations, but the use of anti-inflammatory drugs also seems appropriate, especially corticosteroids that are the sole anti-inflammatory drug available for this purpose in France. The risks associated with the prolonged use of these parenteral drugs are well known. Inhalation is therefore the optimal route, but inhaled drugs may also lead to adverse consequences...
May 12, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28505409/human-asthmatic-bronchial-cells-are-more-susceptible-to-sub-chronic-repeated-exposures-of-aerosolized-carbon-nanotubes-at-occupationally-relevant-doses-than-healthy-cells
#6
Savvina Chortarea, Hana Barosova, Martin James David Clift, Peter Wick, Alke Petri-Fink, Barbara Rothen-Rutishauser
Although acute pulmonary toxicity of carbon nanotubes (CNTs) has been extensively investigated, the knowledge of potential health effects following chronic occupational exposure is currently limited and based only upon in vivo approaches. Our aim was to realistically mimic sub-chronic inhalation of multi-walled CNTs (MWCNTs) in vitro, using the Air-Liquid Interface Cell Exposure system (ALICE) for aerosol exposures onto reconstituted human bronchial tissue from healthy and asthmatic donors. The reliability and sensitivity of the system was validated using crystalline quartz (DQ12), which elicited an increased (pro-)inflammatory response, as reported in vivo...
May 15, 2017: ACS Nano
https://www.readbyqxmd.com/read/28503097/asthma-management-among-allergists-in-italy-results-from-a-survey
#7
M S Magnoni, M Caminati, G W Canonica, F Arpinelli, A Rizzi, G Senna
BACKGROUND: In Europe more than 50% of asthmatic treated patients have not well-controlled asthma. Asthma affects about 2.5 million of patients in Italy. AIMS AND OBJECTIVES: The present survey aims at investigating how Italian allergists approach asthmatic patients, in order to highlight pitfalls and unmet needs concerning real-life asthma management. METHODS: An anonymous 16 item web questionnaire was available (April-October 2015) to all allergists who visited the web site of SIAAIC (Società Italiana di Allergologia, Asma Immunologia Clinica)...
2017: Clinical and Molecular Allergy: CMA
https://www.readbyqxmd.com/read/28502680/semaphorin-3a-is-a-key-player-in-the-pathogenesis-of-asthma
#8
Ronen Cozacov, Katlin Halasz, Tharwat Haj, Zahava Vadasz
Immune semaphorins are key players in regulating immune mediated inflammation. Semaphorin3A (sema3A) a secreted and membrane bound member of this family, is well reported for its properties in maintaining self-tolerance. Semaphorin3A was recognized to be a marker for T-regulatory cells (Tregs), and as such is a useful tool for assessing the status of these cells in preventing immune mediated diseases. This study was designed aiming to evaluate how sema3A is possibly involved in bronchial asthma. Here, we found sema3A serum levels and the expression of sema3A on Tregs significantly lower in patients with moderate to severe asthma when compared to healthy individuals...
May 11, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28502417/analysis-of-bronchial-biopsies-in-chronic-cough
#9
Patricia Macedo, Qingling Zhang, Junpei Saito, Zhike Liang, Lorrette Ffolkes, Andrew G Nicholson, Kian Fan Chung
BACKGROUND: Chronic cough is commonly associated with asthma, gastro-oesophageal reflux disease and postnasal drip, but in a significant proportion, no associated cause can be found. We determined whether examination of bronchial biopsies would be useful in determining the cause associated with chronic cough. METHODS: 100 consecutive patients referred to a specialist cough clinic underwent a systematic assessment including a fiberoptic bronchoscopy for bronchial biopsies...
June 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28500314/activation-of-eosinophils-interacting-with-bronchial-epithelial-cells-by-antimicrobial-peptide-ll-37-implications-in-allergic-asthma
#10
Delong Jiao, Chun-Kwok Wong, Miranda Sin-Man Tsang, Ida Miu-Ting Chu, Dehua Liu, Jing Zhu, Man Chu, Christopher Wai-Kei Lam
The role of antimicrobial peptide LL-37 in asthma exacerbation is unclear. Microbial infection, which is the most common inducer of asthma exacerbation, is accompanied by elevated LL-37. The present study found that co-culture of eosinophils and bronchial epithelial cell line BEAS-2B significantly enhanced intercellular adhesion molecule-1 on both cells and CD18 expression on eosinophils upon LL-37 stimulation. IL-6, CXCL8 and CCL4 were substantially released in co-culture in the presence of LL-37. LL-37 triggered the activation of eosinophils interacting with BEAS-2B cells in a P2X purinoceptor 7/epidermal growth factor receptor-dependent manner...
May 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28488322/impact-of-the-genetic-variants-of-glcci1-on-clinical-features-of-asthmatic-patients
#11
Shinji Chiba, Yutaka Nakamura, Tomoki Mizuno, Kazuyuki Abe, Yosuke Horii, Hiromi Nagashima, Nobuhito Sasaki, Hiroyuki Kanno, Tatsuo Tanita, Kohei Yamauchi
Background Several gene variants are associated with a response to an inhaled corticosteroids (ICSs) treatment in patients with bronchial asthma. A variant of the glucocorticoid-induced transcript 1 (GLCCI1) genes has previously been associated with decreased lung function improvement upon treatment with inhaled corticosteroids in patients with bronchial asthma. Another report has also demonstrated that this genetic biomarker did not influence the change in flow volume in one second. However, no studies have considered the treatment content and the GLCCI1 variants...
May 9, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28484688/what-are-the-effects-of-a-mediterranean-diet-on-allergies-and-asthma-in-children
#12
REVIEW
Jose A Castro-Rodriguez, Luis Garcia-Marcos
This review updates the relationship between the adherence to Mediterranean diet (MedDiet) assessed by questionnaire and asthma, allergic rhinitis, or atopic eczema in childhood. It deals with the effect of MedDiet in children on asthma/wheeze, allergic rhinitis, and atopic dermatitis/eczema, and also with the effect of MedDiet consumption by the mother during pregnancy on the inception of asthma/wheeze and allergic diseases in the offspring. Adherence to MedDiet by children themselves seems to have a protective effect on asthma/wheezing symptoms after adjustment for confounders, although the effect is doubtful on lung function and bronchial hyperresponsiveness...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28484126/mechanisms-underlying-the-pathogenesis-of-hyper-contractility-of-bronchial-smooth-muscle-in-allergic-asthma
#13
Hiroyasu Sakai, Wataru Suto, Yuki Kai, Yoshihiko Chiba
Airway hyperresponsiveness (AHR) and inflammation are key pathophysiological features of asthma. Enhanced contraction of bronchial smooth muscle (BSM) is one of the causes of the AHR. It is thus important for development of asthma therapy to understand the change in the contractile signaling of airway smooth muscle cells associated with the AHR. In addition to the Ca(2+)-mediated phosphorylation of myosin light chain (MLC), contractile agonists also enhance MLC phosphorylation level, Ca(2+)-independently, by inactivating MLC phosphatase (MLCP), called Ca(2+) sensitization of contraction, in smooth muscle cells including airways...
2017: Journal of Smooth Muscle Research, Nihon Heikatsukin Gakkai Kikanshi
https://www.readbyqxmd.com/read/28483577/formoterol-and-fluticasone-propionate-combination-improves-histone-deacetylation-and-anti-inflammatory-activities-in-bronchial-epithelial-cells-exposed-to-cigarette-smoke
#14
M Ferraro, M Gjomarkaj, L Siena, S Di Vincenzo, E Pace
BACKGROUND: The addition of long-acting beta2-agonists (LABAs) to corticosteroids improves asthma control. Cigarette smoke exposure, increasing oxidative stress, may negatively affect corticosteroid responses. The anti-inflammatory effects of formoterol (FO) and fluticasone propionate (FP) in human bronchial epithelial cells exposed to cigarette smoke extracts (CSE) are unknown. AIMS: This study explored whether FP, alone and in combination with FO, in human bronchial epithelial cells line (16-HBE) and primary bronchial epithelial cells (NHBE), counteracted some CSE-mediated effects and in particular some of the molecular mechanisms of corticosteroid resistance...
May 5, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28481693/immunotherapy-of-mold-allergy-a-review
#15
A Bozek, K Pyrkosz
Mold allergies are common, mainly target the respiratory tract and present as allergic rhinitis and/or bronchial asthma. Molds include a large group of different allergens that induce all types of allergic reactions. Allergen specific immunotherapies (AITs) to molds are common; however, at the present time, they are limited to Alternaria. This review presents not only the benefits but also the problems with such types of AIT based on the literature and our experience.
May 8, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28481620/ifn%C3%AE-influences-epithelial-anti-viral-responses-via-histone-methylation-of-the-rig-i-promoter
#16
C Mirella Spalluto, Akul Singhania, Doriana Cellura, Christopher H Woelk, Tilman Sanchez-Elsner, Karl J Staples, Tom M A Wilkinson
The asthmatic lung is prone to respiratory viral infections that exacerbate the symptoms of the underlying disease. Recent work has suggested that a deficient Th1 response in early life may lead to these aberrant anti-viral responses. We investigated whether the inflammatory environment of the airway epithelium could modulate anti-viral gene expression via epigenetic mechanisms, in order to study the development of a long-term dysregulation of innate responses, which are a hallmark of asthma. We primed AALEB, a human bronchial epithelial cell line, with IFNγ and IL13 and subsequently infected cells with Respiratory Syncytial Virus (RSV) and innate anti-viral genes expression and their epigenetic markers were analysed...
May 8, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28481378/occupational-diseases-in-the-automotive-industry-in-czechia-geographic-and-medical-context
#17
Jan Jarolímek, Pavel Urban, Petr Pavlínek, Dagmar Dzurova
OBJECTIVES: The automotive industry represents the most important industrial sector in Czechia. The objective of this study has been to analyze the occurrence of occupational diseases (OD) in the automotive industry during the period from 2001 till 2014. MATERIAL AND METHODS: Data on OD cases was retrieved from the National Registry of OD. Further, we conducted a survey in automotive companies with focus on occupational health services and positions of the companies in global production networks (GPNs)...
May 8, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28477184/il-9-function-sources-and-detection
#18
Wilmer Gerardo Rojas-Zuleta, Elizabeth Sanchez
IL-9 is a pleiotropic cytokine produced in different amounts by a wide variety of cells including mast cells, NKT cells, Th2, Th17, Treg, ILC2, and Th9 cells. Th9 cells are considered to be the main CD4+ T cells that produce IL-9. IL-9 exerts its effects on multiple types of cells and different tissues. To date, its main role has been found in the immune responses against parasites and pathogenesis of allergic diseases such as asthma and bronchial hyperreactivity. Additionally, it induces the proliferation of hematologic neoplasias, including Hodgkin's lymphoma in humans...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28474652/correlation-of-total-serum-immunoglobulin-e-level-sputum-and-peripheral-eosinophil-count-in-assessing-the-clinical-severity-in-bronchial-asthma
#19
Roshan M Kumar, R Pajanivel, G Koteeswaran, Surendra K Menon, Pravin Mv Charles
CONTEXT: Asthma is a chronic inflammatory disorder of the airway with involvement of various cellular populations and release of many inflammatory mediators. Eosinophils and serum immunoglobulin E (IgE) are considered a good marker of airway inflammation in asthma. The correlation of clinical assessment with various markers of airway inflammation in asthma is not well established in the Indian population. AIMS: This study aims to study the correlation of serum IgE, sputum eosinophil count, and peripheral eosinophil count with clinical severity of Asthma...
May 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28471693/evidence-of-pneumoconstriction-in-asthmatics
#20
Plamen Bokov, Christophe Delclaux
INTRODUCTION: In asthma, bronchial smooth muscle contraction is responsible for the obstructive ventilatory defect that may be relieved by the administration of bronchodilators. It has been observed that deep inspiration causes dilation of the airways in both asthmatic and nonasthmatic subjects. Pneumoconstriction is a rare manifestation of the contractile cells present in the perialveolar space leading to a restrictive defect in asthmatics. CASE STUDY: We present the lung function tests of two asthmatic patients (a boy and a woman) depicting a restrictive defect (pneumoconstriction) that disappeared after salbutamol administration while no improvement was noted in the spirometric data...
May 4, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
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