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Exhaled breath

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https://www.readbyqxmd.com/read/28643373/cytomegalovirus-dna-is-highly-prevalent-in-the-blood-of-patients-with-asthma-and-is-associated-with-age-and-asthma-traits
#1
Marek L Kowalski, Aleksandra Wardzynska, Miroslawa Studzinska, Malgorzata Pawelczyk, Zbigniew Jan Lesnikowski, Edyta Paradowska
CMV IgG antibodies have been associated with inflammageing and immunosenescence. We aimed to assess the presence of CMV DNA in the blood of adult and elderly patients with bronchial asthma to establish potential association of CMV DNAemia with asthma and asthma characteristics. Eighty-five elderly asthmatics, 74 younger asthma patients and 114 age-matched controls were recruited. The CMV DNA was detected using commercial artus assay in 10.7% of asthma patients, but was negative in all control individuals. The secondary assay identified CMV DNA in 41...
June 22, 2017: Allergy
https://www.readbyqxmd.com/read/28635619/on-the-importance-of-accurate-quantification-of-individual-volatile-metabolites-in-exhaled-breath
#2
David Smith, Patrik Spanel
It is argued that shortcomings of certain approaches to breath analysis research based on superficial interpretation of non-quantitative data are inadvertently inhibiting the progression of non-invasive breath analysis into clinical practice. The objective of this perspective is to suggest more clinically profitable approaches to breath research. Thus, following a discourse on the challenges and expectations in breath research, a brief indication is given of the analytical techniques currently used for the analysis of very humid exhaled breath...
June 21, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28634021/mycoplasma-pneumoniae-and-health-outcomes-in-children-with-asthma
#3
Pamela R Wood, Jordan C Kampschmidt, Peter H Dube, Marianna P Cagle, Paola Chaparro, Norma S Ketchum, Thirumalai R Kannan, Harjinder Singh, Jay I Peters, Joel B Baseman, Edward G Brooks
BACKGROUND: Acute infections with Mycoplasma pneumoniae (Mp) have been associated with worsening asthma in children. Mp can be present in the respiratory tract for extended periods; it is unknown whether the long-term persistence of Mp in the respiratory tract affects long-term asthma control. OBJECTIVE: To determine the effect of Mp on asthma control. METHODS: We enrolled 31 pediatric subjects 3 to 10 years of age with persistent asthma who completed up to 8 visits over a 24-month period...
June 17, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28626990/exhaled-breath-profiles-in-the-monitoring-of-loss-of-control-and-clinical-recovery-in-asthma
#4
Paul Brinkman, Marianne A van de Pol, Marije G Gerritsen, Lieuwe D Bos, Tamara Dekker, Barbara S Smids, Anirban Sinha, Christof J Majoor, Marlous M Sneeboer, Hugo H Knobel, Teunis J Vink, Frans H de Jongh, René Lutter, Peter J Sterk, Niki Fens
BACKGROUND: Asthma is a chronic inflammatory airway disease, associated with episodes of exacerbations. Therapy with inhaled corticosteroids (ICS) targets airway inflammation, which aims to maintain and restore asthma control. Clinical features are only modestly associated with airways inflammation. Therefore, we hypothesized that exhaled volatile metabolites identify longitudinal changes between clinically stable episodes and loss of asthma control. OBJECTIVES: To determine whether exhaled volatile organic compounds (VOCs) as measured by gas-chromatography / mass-spectrometry (GC/MS) and electronic nose (eNose) technology discriminate between clinically stable and unstable episodes of asthma...
June 19, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28625881/effects-of-exposure-to-biomass-burning-on-pulmonary-inflammatory-markers-and-pulmonary-function-in-individuals-with-copd
#5
D Ramos, M Proença, M R Leite, A D Ferreira, I B Trevisan, G F S Brígida, G Y Tacao, E M C Ramos
INTRODUCTION: Pulmonary rehabilitation (PR) has many benefits for individuals with COPD. However, it is not clear whether PR could prevent the hazards of air pollution exposure. This study aimed to analyze the effects of biomass burning exposure on pulmonary inflammatory markers and pulmonary function in individuals with COPD, participants and non-participants of PR. METHODS: 35 subjects were divided into three groups: individuals with COPD who received PR (G1, n=15), those who did not (G2, n=10), and a control group composed of healthy individuals without COPD (CG, n=10)...
June 15, 2017: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/28622437/detection-of-halitosis-in-breath-between-the-past-present-and-future
#6
Morad K Nakhleh, Marceau Quatredeniers, Hossam Haick
In order to develop a new generation of diagnostics for halitosis, replacing the subjective organoleptic assessment, a series of exhaled breath analyzers has been developed and assessed. All three devices rely on the assessment of exhaled Volatile Sulfuric Compounds (VSCs), which are mainly generated in and emitted from the oral cavity, contributing to the malodor. Portable, on-site and easy to use, these devices have potential for non-invasive diagnosis of halitosis. However, global assessment of exhaled VSCs alone has two main drawbacks: (1) the absence of VCSs does not rule out halitosis; (2) non-sulfuric volatile compounds that could be biomarkers of systemic diseases, found in up to 15% of halitosis cases, are neglected...
June 16, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28619761/exhaled-breath-condensate-biomarkers-for-the-early-diagnosis-of-lung-cancer-using-proteomics
#7
Laura M López-Sánchez, Bernabé Jurado-Gámez, Nuria Feu-Collado, Araceli Valverde, Amanda Cañas, Jose L Fernández-Rueda, Enrique Aranda, Antonio Rodríguez-Ariza
We explored whether the proteomic analysis of exhaled breath condensate (EBC) may provide biomarkers for non-invasive screening for the early detection of lung cancer (LC). EBC was collected from 192 individuals (49 control (C), 49 risk factor-smoking (S), 46 chronic obstructive pulmonary disease (COPD) and 48 LC (LC)). Using LC-MS/MS, 348 different proteins with a different pattern among the four groups were identified in EBC samples. Significantly more proteins were identified in the EBC from LC compared to other groups (C:12...
June 15, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28617073/metabolomics-of-exhaled-breath-condensate-a-means-for-phenotyping-respiratory-diseases
#8
Mauro Maniscalco, Andrea Motta
No abstract text is available yet for this article.
June 15, 2017: Biomarkers in Medicine
https://www.readbyqxmd.com/read/28606833/impact-of-physiological-breathing-motion-for-breast-cancer-radiotherapy-with-proton-beam-scanning-an-in-silico-study
#9
Anna M Flejmer, Behnaz Chehrazi, Dan Josefsson, Iuliana Toma-Dasu, Alexandru Dasu
This study investigates the impact of breathing motion on proton breast treatment plans. Twelve patients with CT datasets acquired during breath-hold-at-inhalation (BHI), breath-hold-at-exhalation (BHE) and in free-breathing (FB) were included in the study. Proton plans were designed for the left breast for BHI and subsequently recalculated for BHE or designed for FB and recalculated for the extreme breath-hold phases. The plans were compared from the point of view of their target coverage and doses to organs-at-risk...
June 9, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28605624/the-application-of-chromatographic-breath-analysis-in-the-search-of-volatile-biomarkers-of-chronic-kidney-disease-and-coexisting-type-2-diabetes-mellitus
#10
B Grabowska-Polanowska, M Skowron, P Miarka, A Pietrzycka, I Śliwka
Chromatographic studies on breath composition are aimed at finding volatile markers useful for medical diagnostics or in screening investigations. Studies leading to the development of screening breath tests are especially important for the diagnostics of chronic kidney disease (CKD) and type 2 diabetes mellitus (T2DM). The aim of the presented study was to confirm diagnostic usefulness of chosen volatile compounds detected in breath, which are suggested as potential biomarkers of renal dysfunction and diabetes...
June 3, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28605258/avp-825-a-novel-intranasal-delivery-system-for-low-dose-sumatriptan-powder-in-the-treatment-of-acute-migraine
#11
Stephen Silberstein
Migraine is a common, disabling disorder, and many patients remain dissatisfied with existing treatments. AVP-825 (ONZETRA® Xsail®) is a Breath Powered® exhalation delivery system for low-dose sumatriptan nasal powder (22 mg) that has been recently approved for use in the treatment of acute migraine with or without aura in adults. AVP-825 takes advantage of unique features of nasal anatomy and physiology to avoid limitations typically seen with other types of intranasal medication delivery. Areas covered: This review provides a summary of the pharmacology, clinical efficacy and tolerability of AVP-825 in clinical studies to date and also provides an overview of the unique aspects of the delivery system...
June 12, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/28595790/trace-metals-in-fluids-lining-the-respiratory-system-of-patients-with-idiopathic-pulmonary-fibrosis-and-diffuse-lung-diseases
#12
REVIEW
Elena Bargagli, Federico Lavorini, Massimo Pistolesi, Elisabetta Rosi, Antje Prasse, Emilia Rota, Luca Voltolini
Idiopathic pulmonary fibrosis (IPF) is an interstitial lung disease with a poor prognosis and an undefined etiopathogenesis. Oxidative stress contributes to alveolar injury and fibrosis development and, because transition metals are essential to the functioning of most proteins involved in redox reactions, a better knowledge of metal concentrations and metabolism in the respiratory system of IPF patients may provide a valuable complementary approach to prevent and manage a disease which is often misdiagnosed or diagnosed in later stages...
July 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28592704/the-added-value-of-exhaled-breath-temperature-in-respiratory-medicine
#13
Todor A Popov, Tanya Kralimarkova, Marina Labor, Davor Plavec
Recognition of the huge economic burden chronic respiratory diseases pose for society motivated fundamental and clinical research leading to insight into the role of airway inflammation in various disease entities and their phenotypes. However, no easy, cheap and patient-friendly methods to assess it have found a place in routine clinical practice. Measurement of exhaled breath temperature (EBT) has been suggested as a non-invasive method to detect inflammatory processes in the airways as a result of increased blood flow within the airway walls...
June 8, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28591693/biomarkers-for-early-diagnosis-of-malignant-mesothelioma-do-we-need-another-moonshot
#14
REVIEW
Sabrina Lagniau, Kevin Lamote, Jan P van Meerbeeck, Karim Y Vermaelen
Early diagnosis of malignant pleural mesothelioma (MPM) is a challenge for clinicians. The disease is usually detected in an advanced stage which precludes curative treatment. We assume that only new and non-invasive biomarkers allowing earlier detection will result in better patient management and outcome. Many efforts have already been made to find suitable biomarkers in blood and pleural effusions, but have not yet resulted in a valid and reproducible diagnostic one. In this review, we will highlight the strengths and shortcomings of blood and fluid based biomarkers and highlight the potential of breath analysis as a non-invasive screening tool for MPM...
May 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28587037/exhaled-nitric-oxide-breath-analysis-used-for-predicting-development-of-lung-injury-after-chest-radiation-therapy
#15
D Nader
No abstract text is available yet for this article.
May 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28586723/validation-of-liquid-and-gaseous-calibration-techniques-for-quantification-of-propofol-in-breath-with-sorbent-tube-thermal-desorption-system-gc-ms
#16
Felix Maurer, Martin Geiger, Thomas Volk, Daniel I Sessler, Sascha Kreuer
Plasma concentrations of intravenous drugs cannot currently be evaluated in real time to guide clinical dosing. However, a system for estimating plasma concentration of the anesthetic propofol from exhaled breath may soon be available. Developing reliable calibration and analytical validation techniques is thus necessary. We therefore compared the established sorbent tube liquid injection technique with a gas injection procedure using a reference gas generator. We then quantified propofol with Tenax sorbent tubes in combination with gas-chromatography coupled mass spectrometry in the breath of 15 patients (101 measurements)...
May 31, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28585921/detection-of-lung-cancer-in-exhaled-breath-with-electronic-nose-using-support-vector-machine-analysis
#17
Madara Tirzīte, Māris Bukovskis, Gunta Strazda, Normunds Jurka, Immanuels Taivans
Lung cancer is one of the most common malignancies with a low five-year survival rate. There are no cheap, simple and widely available screening methods for early diagnostics of lung cancer. The aim of the study was to determine whether analysis of the exhaled breath with an artificial olfactory sensor using support vector analysis can differentiate lung cancer patients from healthy individuals and patients with other lung diseases regardless of the stage of lung cancer and the most common comorbidities...
June 6, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28583012/exhaled-breath-analysis-in-obstructive-sleep-apnea
#18
Esther I Schwarz, Anna Engler, Malcolm Kohler
Breath analysis is a novel application that can be used for non-invasive metabolic phenotyping and identification of disease specific breath patterns. Obstructive sleep apnea (OSA) is highly prevalent and has diverse metabolic and cardiovascular consequences, many of them incompletely understood. Areas covered: This review systematically summarizes the current evidence from breath metabolomics using immunoassays of breath condensate, off-line mass spectrometry as well as real-time analysis by electronic sensors and by untargeted mass spectrometry, and discusses the challenges and perspectives of breath analysis in OSA...
June 14, 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28582768/investigation-on-the-influence-of-time-of-day-on-benzene-metabolic-pharmacokinetics-by-direct-breath-analysis-in-mice
#19
Yuling Zhang, Wanyang Sun, Dewei Shang, Hao Gao, Zhen Zhou, Xue Li
Benzene, well known as a ubiquitous environmental pollutant, can lead to increasing risk of cancer, bone marrow failure as well as other serious diseases. Benzene has been classified as carcinogenic to humans with no recommended safe level of exposure. In this study, the influence of time-of-day on benzene metabolism has been tentatively explored in a mouse model based on direct real-time breath analysis by using membrane inlet single photon ionization time of flight mass spectrometry (MI-SPI-TOFMS). The exhaled breath of eight mice was monitored at a time resolution of less than 20 s after intraperitoneal (I...
May 23, 2017: Chemosphere
https://www.readbyqxmd.com/read/28577109/phosgene-induced-acute-lung-injury-ali-differences-from-chlorine-induced-ali-and-attempts-to-translate-toxicology-to-clinical-medicine
#20
REVIEW
Wenli Li, Juergen Pauluhn
BACKGROUND: Phosgene (carbonyl dichloride) gas is an indispensable chemical inter-mediate used in numerous industrial processes. There is no clear consensus as to its time- and inhaled-dose-dependent etiopathologies and associated preventive or therapeutic treatment strategies. METHODS: Cardiopulmonary function was examined in rats exposed by inhalation to the alveolar irritant phosgene or to the airway irritant chlorine during and following exposure. Terminal measurements focused on hematology, protein extravasation in bronchoalveolar lavage (BAL), and increased lung weight...
December 2017: Clinical and Translational Medicine
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