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COPD, Asthma, Pulmonary Function Tests

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https://www.readbyqxmd.com/read/28420371/effect-of-pulmonary-arteriovenous-malformations-on-the-mechanical-properties-of-the-lungs
#1
Cécile Rotenberg, Marcel Bonay, Mostafa El Hajjam, Sandra Blivet, Alain Beauchet, Pascal Lacombe, Thierry Chinet
BACKGROUND: Pulmonary arteriovenous malformations (PAVMs) are present in approximately 15-50% individuals with hereditary hemorrhagic telangiectasia (HHT). They may be isolated but more often are multiple. The goal of this study was to evaluate the influence of PAVMs on lung mechanical properties. METHODS: We reviewed the files of all adult patients (age ≥ 18 years) referred to our Center for evaluation of HHT between 2005 and 2013. The diagnosis of HHT was based on the Curacao criteria and/or the presence of a pathogenic mutation...
April 19, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28415011/design-and-synthesis-of-novel-xanthine-derivatives-as-potent-and-selective-a2b-adenosine-receptor-antagonists-for-the-treatment-of-chronic-inflammatory-airway-diseases
#2
Sujay Basu, Dinesh A Barawkar, Vidya Ramdas, Meena Patel, Yogesh Waman, Anil Panmand, Santosh Kumar, Sachin Thorat, Minakshi Naykodi, Arnab Goswami, B Srinivasa Reddy, Vandna Prasad, Sandhya Chaturvedi, Azfar Quraishi, Suraj Menon, Shalini Paliwal, Abhay Kulkarni, Vikas Karande, Indraneel Ghosh, Syed Mustafa, Siddhartha De, Vaibhav Jain, Ena Ray Banerjee, Sreekanth R Rouduri, Venkata P Palle, Anita Chugh, Kasim A Mookhtiar
Adenosine induces bronchial hyperresponsiveness and inflammation in asthmatics through activation of A2B adenosine receptor (A2BAdoR). Selective antagonists have been shown to attenuate airway reactivity and improve inflammatory conditions in pre-clinical studies. Hence, the identification of novel, potent and selective A2BAdoR antagonist may be beneficial for the potential treatment of asthma and Chronic Obstructive Pulmonary Disease (COPD). Towards this effort, we explored several prop-2-ynylated C8-aryl or heteroaryl substitutions on xanthine chemotype and found that 1-prop-2-ynyl-1H-pyrazol-4-yl moiety was better tolerated at the C8 position...
April 12, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28386744/impact-of-chronic-kidney-disease-among-korean-adults-with-chronic-obstructive-pulmonary-disease
#3
Min Young Kim, Sungmin Boo, Mijung Yoo, Jonghyun Lee, Na Ree Kang
PURPOSE: Chronic kidney disease (CKD) is an emerging issue in patients with chronic obstructive pulmonary disease (COPD). In COPD, loss of muscle mass is relatively common finding, and diagnosis of CKD should be based on measured or estimated GFR (Cavailles et al. Eur Respir Rev 22:454-475, 2013; Gosker et al. Am J Clin Nutr 71:1033-1047, 2000; Delanaye and Mariat Nat Rev Nephrol 9:513-522, 2013). We aimed to determine the prevalence and impact of CKD, defined by using chronic kidney disease epidemiology collaboration (CKD-EPI) equation, in COPD patients...
April 6, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28351016/nano-enabled-paper-humidity-sensor-for-mobile-based-point-of-care-lung-function-monitoring
#4
Mitradip Bhattacharjee, Harshal B Nemade, Dipankar Bandyopadhyay
The frequency of breathing and peak flow rate of exhaled air are necessary parameters to detect chronic obstructive pulmonary diseases (COPDs) such as asthma, bronchitis, or pneumonia. We developed a lung function monitoring point-of-care-testing device (LFM-POCT) consisting of mouthpiece, paper-based humidity sensor, micro-heater, and real-time monitoring unit. Fabrication of a mouthpiece of optimal length ensured that the exhaled air was focused on the humidity-sensor. The resistive relative humidity sensor was developed using a filter paper coated with nanoparticles, which could easily follow the frequency and peak flow rate of the human breathing...
March 22, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28212463/efficacy-and-tolerability-of-an-inhaled-selective-glucocorticoid-receptor-modulator-azd5423-in-copd-patients-phase-ii-study-results
#5
Piotr Kuna, Magnus Aurivillius, Carin Jorup, Susanne Prothon, Ziad Taib, Staffan Edsbäcker
AZD5423 is a novel, inhaled, selective glucocorticoid receptor modulator (SGRM), which in an allergen challenge model in asthmatics improved lung function and airway hyper-reactivity. In the current trial, AZD5423 was for the first time tested in patients with chronic obstructive pulmonary disease (COPD). In this double-blind, randomised and parallel group study, we examined airway and systemic effects of two doses of AZD5423, inhaled via Turbuhaler for 12 weeks, in 353 symptomatic COPD patients (average pre-bronchodilator forced expiratory volume in one second (FEV1) at screening was 50-52% of predicted normal)...
February 17, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28206676/thoracic-ct-mri-co-registration-for-regional-pulmonary-structure-function-measurements-of-obstructive-lung-disease
#6
Fumin Guo, Sarah Svenningsen, Miranda Kirby, Dante P I Capaldi, Khadija Sheikh, Aaron Fenster, Grace Parraga
PURPOSE: Recent pulmonary imaging research has revealed that in patients with chronic obstructive pulmonary disease (COPD) and asthma, structural and functional abnormalities are spatially heterogeneous. This novel information may help optimize treatment in individual patients, monitor interventional efficacy and develop new treatments. Moreover, by automating the measurement of regional biomarkers for the 19 different anatomical lung segments, there is an opportunity to embed imaging biomarkers into clinically-acceptable clinical workflows and improve lung disease clinical care...
February 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/28203072/-real-life-inhaled-corticosteroid-withdrawal-in-copd-a-subgroup-analysis-of-daccord
#7
Claus Vogelmeier, Heinrich Worth, Roland Buhl, Carl-Peter Criée, Nadine S Lossi, Claudia Mailänder, Peter Kardos
Many patients with chronic obstructive pulmonary disease (COPD) receive inhaled corticosteroids (ICSs) without a clear indication, and thus, the impact of ICS withdrawal on disease control is of great interest. DACCORD is a prospective, noninterventional 2-year study in the primary and secondary care throughout Germany. A subgroup of patients were taking ICS prior to entry - 1,022 patients continued to receive ICS for 2 years; physicians withdrew ICS on entry in 236 patients. Data from these two subgroups were analyzed to evaluate the impact of ICS withdrawal...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28145647/relationship-between-fractional-exhaled-nitric-oxide-level-and-efficacy-of-inhaled-corticosteroid-in-asthma-copd-overlap-syndrome-patients-with-different-disease-severity
#8
Jia Xi Feng, Yun Lin, Jian Lin, Su Su He, Mei Fang Chen, Xiao Mai Wu, You Zu Xu
This study explored the relationship between the fractional exhaled nitric oxide (FeNO) level and the efficacy of inhaled corticosteroid (ICS) in asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) patients with different disease severity. A total of 127 ACOS patients with ACOS (case group) and 131 healthy people (control group) were enrolled in this study. Based on the severity of COPD, the ACOS patients were divided into: mild ACOS; moderate ACOS; severe ACOS; and extremely severe ACOS groups...
March 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28089081/asthma-chronic-obstructive-pulmonary-disease-overlap-syndrome-literature-review-and-contributions-towards-a-portuguese-consensus
#9
D Araújo, E Padrão, M Morais-Almeida, J Cardoso, F Pavão, R B Leite, A C Caldas, A Marques
INTRODUCTION: Phenotypic overlap between the two main chronic airway pulmonary diseases, asthma and chronic obstructive pulmonary disease (COPD), has been the subject of debate for decades, and recently the nomenclature of asthma-COPD overlap syndrome (ACOS) was adopted for this condition. The definition of this entity in the literature is, however, very heterogeneous, it is therefore important to define how it applies to Portugal. METHODS: A literature review of ACOS was made in a first phase resulting in the drawing up of a document that was later submitted for discussion among a panel of chronic lung diseases experts, resulting in reflexions about diagnosis, treatment and clinical guidance for ACOS patients...
January 6, 2017: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/28088797/automated-interpretation-of-pulmonary-function-tests-in-adults-with-respiratory-complaints
#10
Marko Topalovic, Stefan Laval, Jean-Marie Aerts, Thierry Troosters, Marc Decramer, Wim Janssens
BACKGROUND: The use of pulmonary function tests is primarily based on expert opinion and international guidelines. Current interpretation strategies are using predefined cutoffs for the description of a typical pattern. OBJECTIVES: We aimed to explore the predicted disease outcome based on the American Thoracic Society/European Respiratory Society (ATS/ERS) interpreting strategy. Subsequently, we investigated whether an unbiased machine learning framework integrating lung function with clinical variables may provide alternative decision trees resulting in a more accurate diagnosis...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28039077/pharmacokinetics-of-tiotropium-administered-by-respimat-%C3%A2-in-asthma-patients-analysis-of-pooled-data-from-phase-ii-and-iii-clinical-trials
#11
Ashish Sharma, Huib A M Kerstjens, René Aalbers, Petra Moroni-Zentgraf, Benjamin Weber, Ronald Dahl
Tiotropium is a long-acting inhaled antimuscarinic bronchodilator that has recently received marketing authorization for the indication of asthma with dose delivery via the Respimat(®) inhaler, in addition to its widely established role in the management of chronic obstructive pulmonary disease (COPD). This report presents a combined analysis of tiotropium plasma and urine pharmacokinetics at steady state from 8 Phase II/III clinical trials in asthma and delineates the effects of patient characteristics on systemic exposure based on the parameters fe0-24,ss (fraction of dose excreted unchanged in urine over 24 h post-dose at steady-state) and dose-normalized AUCtau,ss and Cmax,ss...
February 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27965780/manifesto-on-small-airway-involvement-and-management-in-asthma-and-chronic-obstructive-pulmonary-disease-an-interasma-global-asthma-association-gaa-and-world-allergy-organization-wao-document-endorsed-by-allergic-rhinitis-and-its-impact-on-asthma-aria-and-global
#12
F Braido, N Scichilone, F Lavorini, O S Usmani, L Dubuske, L P Boulet, R Mosges, C Nunes, M Sánchez-Borges, I J Ansotegui, M Ebisawa, F Levi-Schaffer, L J Rosenwasser, J Bousquet, T Zuberbier, G Walter Canonica
Evidence that enables us to identify, assess, and access the small airways in asthma and chronic obstructive pulmonary disease (COPD) has led INTERASMA (Global Asthma Association) and WAO to take a position on the role of the small airways in these diseases. Starting from an extensive literature review, both organizations developed, discussed, and approved the manifesto, which was subsequently approved and endorsed by the chairs of ARIA and GA(2)LEN. The manifesto describes the evidence gathered to date and defines and proposes issues on small airway involvement and management in asthma and COPD with the aim of challenging assumptions, fostering commitment, and bringing about change...
2016: Asthma research and practice
https://www.readbyqxmd.com/read/27942211/computer-quantification-of-angle-of-collapse-on-maximum-expiratory-flow-volume-curve-for-diagnosing-asthma-copd-overlap-syndrome
#13
Wei Wang, Mengshuang Xie, Shuang Dou, Liwei Cui, Wei Xiao
BACKGROUND: In a previous study, we demonstrated that asthma patients with signs of emphysema on quantitative computed tomography (CT) fulfill the diagnosis of asthma-COPD overlap syndrome (ACOS). However, quantitative CT measurements of emphysema are not routinely available for patients with chronic airway disease, which limits their application. Spirometry was a widely used examination tool in clinical settings and shows emphysema as a sharp angle in the maximum expiratory flow volume (MEFV) curve, called the "angle of collapse (AC)"...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27827953/blocking-trpa1-in-respiratory-disorders-does-it-hold-a-promise
#14
REVIEW
Indranil Mukhopadhyay, Abhay Kulkarni, Neelima Khairatkar-Joshi
Transient Receptor Potential Ankyrin 1 (TRPA1) ion channel is expressed abundantly on the C fibers that innervate almost entire respiratory tract starting from oral cavity and oropharynx, conducting airways in the trachea, bronchi, terminal bronchioles, respiratory bronchioles and upto alveolar ducts and alveoli. Functional presence of TRPA1 on non-neuronal cells got recognized recently. TRPA1 plays a well-recognized role of "chemosensor", detecting presence of exogenous irritants and endogenous pro-inflammatory mediators that are implicated in airway inflammation and sensory symptoms like chronic cough, asthma, chronic obstructive pulmonary disease (COPD), allergic rhinitis and cystic fibrosis...
November 5, 2016: Pharmaceuticals
https://www.readbyqxmd.com/read/27800118/manifesto-on-small-airway-involvement-and-management-in-asthma-and-chronic-obstructive-pulmonary-disease-an-interasma-global-asthma-association-gaa-and-world-allergy-organization-wao-document-endorsed-by-allergic-rhinitis-and-its-impact-on-asthma-aria-and-global
#15
F Braido, N Scichilone, F Lavorini, O S Usmani, L Dubuske, L P Boulet, R Mosges, C Nunes, M Sanchez-Borges, I J Ansotegui, M Ebisawa, F Levi-Schaffer, L J Rosenwasser, J Bousquet, T Zuberbier, G Walter Canonica, A Cruz, A Yanez, A Yorgancioglu, D Deleanu, G Rodrigo, J Berstein, K Ohta, P Vichyanond, R Pawankar, S N Gonzalez-Diaz, S Nakajima, T Slavyanskaya, A Fink-Wagner, C Baez Loyola, D Ryan, G Passalacqua, J Celedon, J C Ivancevich, K Dobashi, M Zernotti, M Akdis, S Benjaponpitak, S Bonini, W Burks, L Caraballo, Z Awad El-Sayed, S Fineman, P Greenberger, E Hossny, J A Ortega-Martell, H Saito, M Tang, L Zhang
Evidence that enables us to identify, assess, and access the small airways in asthma and chronic obstructive pulmonary disease (COPD) has led INTERASMA (Global Asthma Association) and WAO to take a position on the role of the small airways in these diseases. Starting from an extensive literature review, both organizations developed, discussed, and approved the manifesto, which was subsequently approved and endorsed by the chairs of ARIA and GA(2)LEN. The manifesto describes the evidence gathered to date and defines and proposes issues on small airway involvement and management in asthma and COPD with the aim of challenging assumptions, fostering commitment, and bringing about change...
2016: World Allergy Organization Journal
https://www.readbyqxmd.com/read/27742632/respiratory-health-screening-for-opiate-misusers-in-a-specialist-community-clinic-a-mixed-methods-pilot-study-with-integrated-staff-and-service-user-feedback
#16
Caroline Anne Mitchell, Alice Pitt, Joe Hulin, Rod Lawson, Fleur Ashby, Ivan Appelqvist, Brigitte Delaney
OBJECTIVES: Increased rates of illicit drug inhalation are thought to expose opiate misusers (OMUs) to an enhanced risk of respiratory health problems. This pilot study aimed to determine the feasibility of undertaking respiratory screening of OMUs in a community clinic. SETTING: Single-centre UK community substance misuse clinic. PARTICIPANTS: All clinic attendees receiving treatment for opiate misuse were eligible to participate. 36 participants (mean age=37) were recruited over a 5-week period...
October 14, 2016: BMJ Open
https://www.readbyqxmd.com/read/27713629/importance-of-fractional-exhaled-nitric-oxide-in-the-differentiation-of-asthma-copd-overlap-syndrome-asthma-and-copd
#17
Feng-Jia Chen, Xin-Yan Huang, Yang-Li Liu, Geng-Peng Lin, Can-Mao Xie
BACKGROUND: Fractional exhaled nitric oxide (FeNO) is an easy, sensitive, reproducible, and noninvasive marker of eosinophilic airway inflammation. Accordingly, FeNO is extensively used to diagnose and manage asthma. Patients with COPD who share some of the features of asthma have a condition called asthma-COPD overlap syndrome (ACOS). The feasibility of using FeNO to differentiate ACOS patients from asthma and COPD patients remains unclear. METHODS: From February 2013 to May 2016, patients suspected with asthma and COPD through physician's opinion were subjected to FeNO measurement, pulmonary function test (PFT), and bronchial hyperresponsiveness or bronchodilator test...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27677501/diagnostic-potential-of-extracellular-microrna-in-respiratory-diseases
#18
Dhamotharan Pattarayan, Rajesh K Thimmulappa, Vilwanathan Ravikumar, Subbiah Rajasekaran
Lack of markers of subclinical disease state and clinical phenotype other than pulmonary function test has made the diagnosis and interventions of environmental respiratory diseases a major challenge. MicroRNAs (miRNAs), small non-coding single stranded RNAs, have emerged as potential disease-modifier in various environmental respiratory diseases. They can also be found in various body fluids and are remarkably stable. Because of their high stability, disease-specific expression, and the ease to detect and quantify them have raised the potential of miRNAs in body fluids to be useful clinical diagnostic biomarkers for lung disease phenotyping...
September 27, 2016: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/27627973/smoking-status-and-a-pulmonary-function-test-in-patients-with-rotator-cuff-tears
#19
Chiharu Yoshii, Soushi Uchida, Shingo Noguchi, Ryo Torii, Ikuko Shimabukuro, Kazuhiro Yatera
Although chronic obstructive pulmonary disease (COPD) affects one in several smokers, only a few patients are correctly diagnosed compared to the estimated number of patients. Several recent reports indicate that the development of rotator cuff tears is related to smoking. In this study, we investigated smoking status in patients with rotator cuff tears and evaluated the possibility of undiagnosed COPD by a pulmonary function test. The subjects were 150 consecutive patients over 40 years old, who had been diagnosed with rotator cuff tears and had been examined by a pulmonary function test before surgery in our orthopedic department between April 2011 and June 2015...
September 2016: Journal of UOEH
https://www.readbyqxmd.com/read/27616884/the-objective-evaluation-of-obstructive-pulmonary-diseases-with-spirometry
#20
Sevket Ozkaya, Adem Dirican, Tibel Tuna
Airway obstruction is variable in asthma, while it is progressive and persistent in chronic bronchitis and emphysema. However, some of the patients presenting with symptoms of chronic airway diseases have clinical features of both asthma and COPD. The group with "Asthma-COPD Overlap Syndrome" (ACOS) phenotype was characterized by definitely irreversible airway obstruction accompanied by symptoms and signs of reversibility. In this study, we aimed to classify obstructive airway diseases by clinical, radiological, and pulmonary function tests...
2016: International Journal of Chronic Obstructive Pulmonary Disease
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