| Title: | The Influence of Smoking Status on Exhaled Breath Profiles in Asthma and COPD Patients |
| Author(s): | Principe S; van Bragt J; Longo C; de Vries R; Sterk PJ; Scichilone N; Vijverberg SJH; Maitland-van der Zee AH; |
| Address: | "Department of Respiratory Medicine, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands. Dipartimento Universitario di Promozione della Salute, Materno Infantile, University of Palermo, Medicina Interna e Specialistica di Eccellenza 'G. D'Alessandro'(PROMISE) c/o Pneumologia, AOUP 'Policlinico Paolo Giaccone', 90127 Palermo, Italy. Breathomix b.v., 2333 Leiden, The Netherlands" |
| DOI: | 10.3390/molecules26051357 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Breath analysis using eNose technology can be used to discriminate between asthma and COPD patients, but it remains unclear whether results are influenced by smoking status. We aim to study whether eNose can discriminate between ever- vs. never-smokers and smoking <24 vs. >24 h before the exhaled breath, and if smoking can be considered a confounder that influences eNose results. We performed a cross-sectional analysis in adults with asthma or chronic obstructive pulmonary disease (COPD), and healthy controls. Ever-smokers were defined as patients with current or past smoking habits. eNose measurements were performed by using the SpiroNose. The principal component (PC) described the eNose signals, and linear discriminant analysis determined if PCs classified ever-smokers vs. never-smokers and smoking <24 vs. >24 h. The area under the receiver-operator characteristic curve (AUC) assessed the accuracy of the models. We selected 593 ever-smokers (167 smoked <24 h before measurement) and 303 never-smokers and measured the exhaled breath profiles of discriminated ever- and never-smokers (AUC: 0.74; 95% CI: 0.66-0.81), and no cigarette consumption <24h (AUC 0.54, 95% CI: 0.43-0.65). In healthy controls, the eNose did not discriminate between ever or never-smokers (AUC 0.54; 95% CI: 0.49-0.60) and recent cigarette consumption (AUC 0.60; 95% CI: 0.50-0.69). The eNose could distinguish between ever and never-smokers in asthma and COPD patients, but not recent smokers. Recent smoking is not a confounding factor of eNose breath profiles" |
| Keywords: | "Adult Asthma/*diagnosis/etiology/metabolism Breath Tests/*methods Case-Control Studies Cross-Sectional Studies Electronic Nose/*statistics & numerical data *Exhalation Female Humans Male Middle Aged Pulmonary Disease, Chronic Obstructive/*diagnosis/etiolo;" |
| Notes: | "MedlinePrincipe, Stefania van Bragt, Job J M H Longo, Cristina de Vries, Rianne Sterk, Peter J Scichilone, Nicola Vijverberg, Susanne J H Maitland-van der Zee, Anke H eng Switzerland 2021/04/04 Molecules. 2021 Mar 4; 26(5):1357. doi: 10.3390/molecules26051357" |
