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Bronchial asthma

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https://www.readbyqxmd.com/read/28227330/changes-in-inhaler-inhalation-acoustic-features-during-induced-bronchoconstriction-a-pilot-study
#1
Thomas A McCartan, Terence E Taylor, Imran Sulaiman, Richard W Costello, Richard B Reilly, Thomas A McCartan, Terence E Taylor, Imran Sulaiman, Richard W Costello, Richard B Reilly, Richard B Reilly, Thomas A McCartan, Terence E Taylor, Imran Sulaiman, Richard W Costello
Asthma is a chronic respiratory disease affecting millions of people worldwide, and is consequently a major issue for global health. Exacerbations are acute events involving the worsening of asthma's primary respiratory symptoms and are a major cause of morbidity in asthma patients, largely due to the unpredictability of their onset. This study aimed to investigate the relationship between changes in acoustic features of inhaler inhalations and changes in forced expiratory volume in one second (FEV1) that occur during a simulated exacerbation, a bronchial challenge test (BCT)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28216960/pharmacological-evaluation-of-apium-leptophyllum-pers-on-bronchial-asthma
#2
Himanshu Bhusan Sahoo, Rakesh Sagar, Ganesh Patro, Madhulita Panda, Saroj Kumar Sahoo, D Priyadarshini
OBJECTIVE: The present study was to investigate the antiasthmatic potential from the flavonoid fraction of Apium leptophyllum fruit (FFALF) to validate its traditional claim. MATERIALS AND METHODS: The antiasthmatic activity of FFALF was evaluated by histamine or acetylcholine-induced bronchospasm model in guinea pigs, compound 48/80 induced mast cell degranulation in albino rats and histamine-induced tracheal contraction in guinea pig. The preconvulsion dyspnea time at 0(th) and 7(th) day at the dose of 100 and 200 mg/kg in guinea pig's bronchospasm model, the percentage of granulated and degranulated mast cell at the dose of 500, 750, and 1000 μg/ml in rats and tracheal contraction at the dose of 500, 750, and 1000 μg/ml in guinea pig were measured and compared with respective control groups...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/28214133/dynamic-hyperinflation-in-patients-with-asthma-and-exercise-induced-bronchoconstriction
#3
Olga Mediano, Raquel Casitas, Carlos Villasante, Elisabet Martínez-Cerón, Raúl Galera, Ester Zamarrón, Francisco García-Río
BACKGROUND: Little is known about the behavior of operative lung volumes during exercise in patients with asthma and exercise-induced bronchoconstriction (EIB). OBJECTIVES: To compare the presence of dynamic hyperinflation (DH) in patients with mild asthma with and without EIB and in healthy individuals and to relate the changes in end-expiratory lung volume (EELV) with postexercise airflow reduction. METHODS: A total of 122 consecutive stable patients (>12 years of age) with mild asthma and 38 controls were studied...
February 14, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28208871/clinical-utility-of-fractional-exhaled-nitric-oxide-feno-as-a-biomarker-to-predict-severity-of-disease-and-response-to-inhaled-corticosteroid-ics-in-asthma-patients
#4
Revathy Neelamegan, Vinodkumar Saka, Kadhiravan Tamilarasu, Manju Rajaram, Sandhiya Selvarajan, Adithan Chandrasekaran
INTRODUCTION: Bronchial asthma is a common chronic inflammatory airway disease diagnosed and is based on symptomatic history and Pulmonary Function Tests (PFT). Fractional exhaled Nitric Oxide (FeNO) is exclusively a non-invasive biomarker of on-going eosinophilic airway inflammation which remains unpredictable only with PFTs. FeNO measurement is recommended in predicting asthma severity and Inhaled Corticosteroid (ICS) response but further research is required to understand its clinical utility and agreement with current recommendations in a specific population...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28205598/lyn-regulates-mucus-secretion-and-muc5ac-via-the-stat6-signaling-pathway-during-allergic-airway-inflammation
#5
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/28199764/clinical-markers-of-asthma-and-ige-assessed-in-parents-before-conception-predicts-asthma-and-hay-fever-in-the-offspring
#6
Randi J Bertelsen, Marta Rava, Anne Elie Carsin, Simone Accordini, Bryndis Benediktsdóttir, Julia Dratva, Karl A Franklin, Joachim Heinrich, Mathias Holm, Christer Janson, Ane Johannessen, Deborah L Jarvis, Rain Jogi, Benedicte Leynaert, Dan Norback, Ernst Reidar Omenaas, Chantal Raherison, José Luis Sánchez-Ramos, Vivi Schlünssen, Torben Sigsgaard, Shyamali C Dharmage, Cecilie Svanes
BACKGROUND: Mice models suggest epigenetic inheritance induced by parental allergic disease activity. However, we know little of how parental disease activity before conception influences offspring's asthma and allergy in humans. OBJECTIVE: We aimed to assess the associations of parental asthma severity, bronchial hyperresponsiveness (BHR), and total and specific IgEs, measured before conception vs after birth, with offspring asthma and hay fever. METHODS: The study included 4293 participants (mean age 34, 47% men) from the European Community Respiratory Health Survey (ECRHS) with information on asthma symptom severity, BHR, total and specific IgEs from 1991-1993, and data on 9100 offspring born 1972-2012...
February 15, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28196638/japanese-guidelines-for-adult-asthma-2017
#7
REVIEW
Masakazu Ichinose, Hisatoshi Sugiura, Hiroyuki Nagase, Masao Yamaguchi, Hiromasa Inoue, Hironori Sagara, Jun Tamaoki, Yuji Tohda, Mitsuru Munakata, Kohei Yamauchi, Ken Ohta
Adult bronchial asthma is characterized by chronic airway inflammation, and presents clinically with variable airway narrowing (wheezes and dyspnea) and cough. Long-standing asthma induces airway remodeling, leading to intractable asthma. The number of patients with asthma has increased; however, the number of patients who die of asthma has decreased (1.2 per 100,000 patients in 2015). The goal of asthma treatment is to enable patients with asthma to attain normal pulmonary function and lead a normal life, without any symptoms...
February 11, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28190974/avoiding-misdiagnosis-in-patients-with-dyspnea-and-wheezing-a-case-report-illustrating-the-clinical-implications-of-fixation-error
#8
Fabiano Di Marco, Giuseppe Francesco Sferrazza Papa, Dejan Radovanovic, Pierachille Santus
BACKGROUND: Bronchial asthma is a heterogeneous respiratory condition which can be mimicked by a wide range of pathologies including upper airways stenosis. The accurate diagnosis of asthma, as with other conditions, may be influenced by fixation errors, which are common in medicine and occur when a physician concentrates on only one element of a clinical case without considering other relevant aspects. Here we report a challenging case characterized by the contemporaneous presence of a common disease, asthma, together with a rare respiratory disease, idiopathic tracheal stenosis...
2017: Clinical and Molecular Allergy: CMA
https://www.readbyqxmd.com/read/28188409/tipe2-inhibits-the-expression-of-asthma-related-inflammatory-factors-in-hyperstretched-bronchial-epithelial-cells-through-the-wnt-%C3%AE-catenin-pathway
#9
Xinrong Sun, Lu Chen, Wen Yan
Childhood asthma, an airway inflammatory disease, is a serious threat to the child's quality of life. Recently, TIPE2 expression was reported to be decreased in children with asthma. Therefore, additional studies focusing on TIPE2 might provide an approach for treating childhood asthma. In this study, we found that TIPE2 was poorly expressed in hyperstretched human bronchial epithelial cells (BEAS-2B). TIPE2 overexpression also significantly suppressed the stretch-induced secretion of asthma-related inflammatory factors (TNF-α, TSLP, MMP-9, and VEGF)...
February 10, 2017: Inflammation
https://www.readbyqxmd.com/read/28187265/gastroprotective-effects-of-montelukast-and-nigella-sativa-oil-against-corticosteroids-induced-gastric-damage-much-more-than-antiasthmatic-drugs
#10
Fatma Hassan Rizk, Marwa Awad Ibrahim, Marwa Abd-Elsalam, Nema Ali Soliman, Sherief Abd-Elsalam
Corticosteroids are used to treat variety of diseases like bronchial asthma. However, long term corticosteroids have a gastric ulcerogenic potential. Montelukast (MTK) and nigella sativa oil (NSO) are used in treatment of bronchial asthma. Previous studies showed that MTK and NSO had gastroprotective effects in other models of gastric ulcer. The present study assesses synergistic gastroprotective effects of both drugs in dexamethasone (DXM)-induced gastric damage. 50 male rats were divided into 5 groups; normal control (I), DXM group (II), MTK+DXM group (III), NSO+DXM group (IV), MTK+NSO+DXM group (V)...
February 10, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28185773/association-of-gene-polymorphisms-in-interleukin-6-in-infantile-bronchial-asthma
#11
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/28182031/allergies-in-urban-versus-countryside-settings-in-poland-as-part-of-the-epidemiology-of-the-allergic-diseases-in-poland-ecap-study-challenge-the-early-differential-diagnosis
#12
Edyta Krzych-Fałta, Konrad Furmańczyk, Barbara Piekarska, Aneta Tomaszewska, Adam Sybilski, Bolesław K Samoliński
INTRODUCTION: The incidence of allergies depends on a number of factors, including adopting an urban "western" lifestyle, genetic predispositions, and different regions of residence. AIM: To compare the prevalence of allergic conditions (seasonal allergic rhinitis (SAR) and perennial allergic rhinitis (PAR), bronchial asthma (BA), atopic dermatitis (AD)) in a group of countryside versus urban residents in Poland. MATERIAL AND METHODS: The prevalence of allergic conditions in urban versus countryside settings was assessed using the translated and approved questionnaire developed for international ECRHS II and ISAAC studies...
October 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/28178715/infectious-causes-of-right-middle-lobe-syndrome
#13
Aatif Rashid, Sowmya Nanjappa, John N Greene
Right middle lobe (RML) syndrome is defined as recurrent or chronic obstruction or infection of the middle lobe of the right lung. Nonobstructive causes of middle lobe syndrome include inflammatory processes and defects in the bronchial anatomy and collateral ventilation. We report on 2 case patients with RML syndrome, one due to infection with Mycobacterium avium complex followed by M asiaticum infection and the other due to allergic bronchopulmonary aspergillosis. A history of atopy, asthma, or chronic obstructive pulmonary disease has been reported in up to one-half of those with RML...
January 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28176948/theophylline-action-on-primary-human-bronchial-epithelial-cells-under-proinflammatory-stimuli-and-steroidal-drugs-a-therapeutic-rationale-approach
#14
Luca Gallelli, Daniela Falcone, Roberto Cannataro, Mariarita Perri, Raffaele Serra, Girolamo Pelaia, Rosario Maselli, Rocco Savino, Giuseppe Spaziano, Bruno D'Agostino
Theophylline is a natural compound present in tea. Because of its property to relax smooth muscle it is used in pharmacology for the treatment of airway diseases (ie, chronic obstructive pulmonary disease, asthma). However, this effect on smooth muscle is dose dependent and it is related to the development of side effects. Recently, an increasing body of evidence suggests that theophylline, at low concentrations, also has anti-inflammatory effects related to the activation of histone deacetylases. In this study, we evaluated the effects of theophylline alone and in combination with corticosteroids on human bronchial epithelial cells under inflammatory stimuli...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28166070/prevalence-of-respiratory-diseases-according-to-spirometry-findings-among-patients-attending-the-spirometry-department-of-dhulikhel-hospital
#15
B K Prajapati, S Pradhan
Background Spirometry is a standard test for screening and evaluation of patients with symptoms of cough and shortness of breath. Despite its easy availability, low cost and ease of performance it has not been widely used in clinical practice in Nepal. Objective To assess the prevalence of respiratory diseases in a regional referral centre in patients referred for spirometry. Method This is a descriptive cross-sectional study including patients referred for spirometry to the spirometry unit of Dhulikhel Hospital, Kathmandu University Hospital from 2014 July to 2015 October...
April 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/28165446/identification-of-bpifa1-splunc1-as-an-epithelium-derived-smooth-muscle-relaxing-factor
#16
Tongde Wu, Julianne Huang, Patrick J Moore, Michael S Little, William G Walton, Robert C Fellner, Neil E Alexis, Y Peter Di, Matthew R Redinbo, Stephen L Tilley, Robert Tarran
Asthma is a chronic airway disease characterized by inflammation, mucus hypersecretion and abnormal airway smooth muscle (ASM) contraction. Bacterial permeability family member A1, BPIFA1, is a secreted innate defence protein. Here we show that BPIFA1 levels are reduced in sputum samples from asthmatic patients and that BPIFA1 is secreted basolaterally from healthy, but not asthmatic human bronchial epithelial cultures (HBECs), where it suppresses ASM contractility by binding to and inhibiting the Ca(2+) influx channel Orai1...
February 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28164609/anti-cytoplasmic-autoantibodies-in-hodgkin-s-lymphoma
#17
Joachim Sennekamp, Hans-Peter Seelig
BACKGROUND: A 42-year old male patient with anamnesis of bronchial asthma presented himself with exertional dyspnea. High titer antibodies of cytoplasmic pattern in the indirect immunofluorescence test (IIFT) on HEp-2cells, not attributable to common specificities like anti-tRNA-synthetases, anti-signal recognition particle (SRP) or anti-ribosomal proteins (RPs) prompted the molecular biological approach for determination of antigen specificity. In-depth investigation of the patient's clinical settings revealed a lymphocyte predominant Hodgkin's lymphoma, which could be brought to complete remission by chemotherapy...
August 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28164255/late-onset-asthma-a-diagnostic-and-management-challenge
#18
Charlotte Suppli Ulrik
Late-onset asthma is common, associated with poor outcome, underdiagnosed and undertreated, possibly due to the modifying effect of ageing on disease expression. Although the diagnostic work-up in elderly individuals suspected of having asthma follows the same steps as in younger individuals (case history and spirometry), it is important to acknowledge that elderly individuals are likely to have diminished bronchodilator reversibility and some degree of fixed airflow obstruction. Elderly individuals, therefore, often require further objective tests, including bronchial challenge testing, to objectively confirm asthma...
February 6, 2017: Drugs & Aging
https://www.readbyqxmd.com/read/28163274/high-resolution-computed-tomographic-evaluation-of-bronchial-wall-thickness-in-healthy-and-clinically-asthmatic-cats
#19
Sungjun Won, Sookyung Yun, Jeosoon Lee, Mikyung Lee, Mincheol Choi, Junghee Yoon
The objective of study is to determine the thickness of bronchial walls of clinically diagnosed asthmatic cats using high resolution computed tomography (HRCT) compared to that of healthy cats. The bronchial walls and pulmonary arteries were measured in healthy 16 cats and clinically asthmatic 4 cats. The bronchial walls and pulmonary arteries were measured under general anesthesia with positive pressure inspiration using HRCT. In healthy and asthmatic cats, bronchial lumen to the artery ratio (BA ratio), the ratio of bronchial wall thickness to bronchial diameter (TD ratio) and ratio of bronchial wall thickness to pulmonary artery (TA ratio) were measured...
February 5, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28163052/airway-and-serum-biochemical-correlates-of-refractory-neutrophilic-asthma
#20
Rafeul Alam, James Good, Donald Rollins, Mukesh Verma, HongWei Chu, Tuyet-Hang Pham, Richard J Martin
BACKGROUND: Despite the progress in diagnosis and management of asthma, many patients have poorly controlled or refractory asthma. The mechanism of this refractory asthma is not well understood. OBJECTIVE: Explore the relationship between neutrophils and other biomarkers of refractory asthma. METHOD: Sixty subjects with refractory asthma (RA), 30 with non-refractory asthma (NRA) and 20 healthy subjects were enrolled. We performed a comprehensive characterization of these study subjects, which included laboratory and pulmonary function studies, chest CT, and bronchoscopy with bronchoalveolar lavage...
February 2, 2017: Journal of Allergy and Clinical Immunology
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