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Course CW, Lewis PA, Kotecha SJ, Cousins M, Hart K, Heesom KJ, Watkins WJ, Kotecha S. Evidence of abnormality in glutathione metabolism in the airways of preterm born children with a history of bronchopulmonary dysplasia. Sci Rep 2023; 13:19465. [PMID: 37945650 PMCID: PMC10636015 DOI: 10.1038/s41598-023-46499-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 11/01/2023] [Indexed: 11/12/2023] Open
Abstract
Preterm-born children are at risk of long-term pulmonary deficits, including those who developed bronchopulmonary dysplasia (BPD) in infancy, however the underlying mechanisms remain poorly understood. We characterised the exhaled breath condensate (EBC) metabolome from preterm-born children, both with and without BPD. Following spirometry, EBC from children aged 7-12 years, from the Respiratory Health Outcomes in Neonates study, were analysed using Time-of-Flight Mass Spectrometry. Metabolite Set Enrichment Analysis (MSEA) linked significantly altered metabolites to biological processes. Linear regression models examined relationships between metabolites of interest and participant demographics. EBC was analysed from 214 children, 144 were born preterm, including 34 with BPD. 235 metabolites were detected, with 38 above the detection limit in every sample. Alanine and pyroglutamic acid were significantly reduced in the BPD group when compared to preterm controls. MSEA demonstrated a reduction in glutathione metabolism. Reduced quantities of alanine, ornithine and urea in the BPD group were linked with alteration of the urea cycle. Linear regression revealed significant associations with BPD when other characteristics were considered, but not with current lung function parameters. In this exploratory study of the airway metabolome, preterm-born children with a history of BPD had changes consistent with reduced antioxidant mechanisms suggesting oxidative stress.
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Affiliation(s)
- Christopher W Course
- Department of Child Health, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Philip A Lewis
- Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - Sarah J Kotecha
- Department of Child Health, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Michael Cousins
- Department of Child Health, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
- Department of Paediatrics, Cardiff and Vale University Health Board, Cardiff, UK
| | - Kylie Hart
- Department of Paediatrics, Cardiff and Vale University Health Board, Cardiff, UK
| | - Kate J Heesom
- Faculty of Life Sciences, University of Bristol, Bristol, UK
| | - W John Watkins
- Department of Child Health, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK
| | - Sailesh Kotecha
- Department of Child Health, School of Medicine, Cardiff University, Heath Park, Cardiff, CF14 4XN, UK.
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2
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Borras E, McCartney MM, Rojas DE, Hicks TL, Tran NK, Tham T, Juarez MM, Franzi L, Harper RW, Davis CE, Kenyon NJ. Oxylipin concentration shift in exhaled breath condensate (EBC) of SARS-CoV-2 infected patients. J Breath Res 2023; 17:10.1088/1752-7163/acea3d. [PMID: 37489864 PMCID: PMC10446499 DOI: 10.1088/1752-7163/acea3d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 07/25/2023] [Indexed: 07/26/2023]
Abstract
Infection of airway epithelial cells with severe acute respiratory coronavirus 2 (SARS-CoV-2) can lead to severe respiratory tract damage and lung injury with hypoxia. It is challenging to sample the lower airways non-invasively and the capability to identify a highly representative specimen that can be collected in a non-invasive way would provide opportunities to investigate metabolomic consequences of COVID-19 disease. In the present study, we performed a targeted metabolomic approach using liquid chromatography coupled with high resolution chromatography (LC-MS) on exhaled breath condensate (EBC) collected from hospitalized COVID-19 patients (COVID+) and negative controls, both non-hospitalized and hospitalized for other reasons (COVID-). We were able to noninvasively identify and quantify inflammatory oxylipin shifts and dysregulation that may ultimately be used to monitor COVID-19 disease progression or severity and response to therapy. We also expected EBC-based biochemical oxylipin changes associated with COVID-19 host response to infection. The results indicated ten targeted oxylipins showing significative differences between SAR-CoV-2 infected EBC samples and negative control subjects. These compounds were prostaglandins A2 and D2, LXA4, 5-HETE, 12-HETE, 15-HETE, 5-HEPE, 9-HODE, 13-oxoODE and 19(20)-EpDPA, which are associated with specific pathways (i.e. P450, COX, 15-LOX) related to inflammatory and oxidative stress processes. Moreover, all these compounds were up-regulated by COVID+, meaning their concentrations were higher in subjects with SAR-CoV-2 infection. Given that many COVID-19 symptoms are inflammatory in nature, this is interesting insight into the pathophysiology of the disease. Breath monitoring of these and other EBC metabolites presents an interesting opportunity to monitor key indicators of disease progression and severity.
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Affiliation(s)
- Eva Borras
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, University of California Davis, CA
- These authors contributed equally: Eva Borras, Mitchell M. McCartney
| | - Mitchell M. McCartney
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, University of California Davis, CA
- VA Northern California Health Care System, 10535 Hospital Way, Mather, CA 95655, USA
- These authors contributed equally: Eva Borras, Mitchell M. McCartney
| | - Dante E. Rojas
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, University of California Davis, CA
| | - Tristan L Hicks
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, University of California Davis, CA
| | - Nam K Tran
- UC Davis Lung Center, University of California Davis, CA
- Department of Pathology and Laboratory Medicine, UC Davis, Sacramento CA, USA
| | - Tina Tham
- UC Davis Lung Center, University of California Davis, CA
- Department of Internal Medicine, 4150 V Street, Suite 3400, University of California, Davis, Sacramento, CA 95817, USA
| | - Maya M Juarez
- UC Davis Lung Center, University of California Davis, CA
- Department of Internal Medicine, 4150 V Street, Suite 3400, University of California, Davis, Sacramento, CA 95817, USA
| | - Lisa Franzi
- UC Davis Lung Center, University of California Davis, CA
- Department of Internal Medicine, 4150 V Street, Suite 3400, University of California, Davis, Sacramento, CA 95817, USA
| | - Richart W. Harper
- UC Davis Lung Center, University of California Davis, CA
- VA Northern California Health Care System, 10535 Hospital Way, Mather, CA 95655, USA
- Department of Internal Medicine, 4150 V Street, Suite 3400, University of California, Davis, Sacramento, CA 95817, USA
| | - Cristina E. Davis
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, University of California Davis, CA
- VA Northern California Health Care System, 10535 Hospital Way, Mather, CA 95655, USA
| | - Nicholas J. Kenyon
- UC Davis Lung Center, University of California Davis, CA
- VA Northern California Health Care System, 10535 Hospital Way, Mather, CA 95655, USA
- Department of Pathology and Laboratory Medicine, UC Davis, Sacramento CA, USA
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3
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Fothergill DM, Borras E, McCartney MM, Schelegle E, Davis CE. Exhaled breath condensate profiles of U.S. Navy divers following prolonged hyperbaric oxygen (HBO) and nitrogen-oxygen (Nitrox) chamber exposures. J Breath Res 2023; 17:10.1088/1752-7163/acd715. [PMID: 37207635 PMCID: PMC11057948 DOI: 10.1088/1752-7163/acd715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 05/19/2023] [Indexed: 05/21/2023]
Abstract
Prolonged exposure to hyperbaric hyperoxia can lead to pulmonary oxygen toxicity (PO2tox). PO2tox is a mission limiting factor for special operations forces divers using closed-circuit rebreathing apparatus and a potential side effect for patients undergoing hyperbaric oxygen (HBO) treatment. In this study, we aim to determine if there is a specific breath profile of compounds in exhaled breath condensate (EBC) that is indicative of the early stages of pulmonary hyperoxic stress/PO2tox. Using a double-blind, randomized 'sham' controlled, cross-over design 14 U.S. Navy trained diver volunteers breathed two different gas mixtures at an ambient pressure of 2 ATA (33 fsw, 10 msw) for 6.5 h. One test gas consisted of 100% O2(HBO) and the other was a gas mixture containing 30.6% O2with the balance N2(Nitrox). The high O2stress dive (HBO) and low O2stress dive (Nitrox) were separated by at least seven days and were conducted dry and at rest inside a hyperbaric chamber. EBC samples were taken immediately before and after each dive and subsequently underwent a targeted and untargeted metabolomics analysis using liquid chromatography coupled to mass spectrometry (LC-MS). Following the HBO dive, 10 out of 14 subjects reported symptoms of the early stages of PO2tox and one subject terminated the dive early due to severe symptoms of PO2tox. No symptoms of PO2tox were reported following the nitrox dive. A partial least-squares discriminant analysis of the normalized (relative to pre-dive) untargeted data gave good classification abilities between the HBO and nitrox EBC with an AUC of 0.99 (±2%) and sensitivity and specificity of 0.93 (±10%) and 0.94 (±10%), respectively. The resulting classifications identified specific biomarkers that included human metabolites and lipids and their derivatives from different metabolic pathways that may explain metabolomic changes resulting from prolonged HBO exposure.
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Affiliation(s)
| | - Eva Borras
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, One Shields Avenue, University of California, Davis, Davis, California, USA
| | - Mitchell M. McCartney
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, One Shields Avenue, University of California, Davis, Davis, California, USA
- VA Northern California Health Care System, Mather, California, USA
| | - Edward Schelegle
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, California, USA
| | - Cristina E. Davis
- Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California, USA
- UC Davis Lung Center, One Shields Avenue, University of California, Davis, Davis, California, USA
- VA Northern California Health Care System, Mather, California, USA
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4
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McCartney MM, Borras E, Rojas DE, Hicks TL, Hamera KL, Tran NK, Tham T, Juarez MM, Lopez E, Kenyon NJ, Davis CE. Predominant SARS-CoV-2 variant impacts accuracy when screening for infection using exhaled breath vapor. COMMUNICATIONS MEDICINE 2022; 2:158. [PMID: 36482179 PMCID: PMC9731983 DOI: 10.1038/s43856-022-00221-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 11/21/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND New technologies with novel and ambitious approaches are being developed to diagnose or screen for SARS-CoV-2, including breath tests. The US FDA approved the first breath test for COVID-19 under emergency use authorization in April 2022. Most breath-based assays measure volatile metabolites exhaled by persons to identify a host response to infection. We hypothesized that the breathprint of COVID-19 fluctuated after Omicron became the primary variant of transmission over the Delta variant. METHODS We collected breath samples from 142 persons with and without a confirmed COVID-19 infection during the Delta and Omicron waves. Breath samples were analyzed by gas chromatography-mass spectrometry. RESULTS Here we show that based on 63 exhaled compounds, a general COVID-19 model had an accuracy of 0.73 ± 0.06, which improved to 0.82 ± 0.12 when modeling only the Delta wave, and 0.84 ± 0.06 for the Omicron wave. The specificity improved for the Delta and Omicron models (0.79 ± 0.21 and 0.74 ± 0.12, respectively) relative to the general model (0.61 ± 0.13). CONCLUSIONS We report that the volatile signature of COVID-19 in breath differs between the Delta-predominant and Omicron-predominant variant waves, and accuracies improve when samples from these waves are modeled separately rather than as one universal approach. Our findings have important implications for groups developing breath-based assays for COVID-19 and other respiratory pathogens, as the host response to infection may significantly differ depending on variants or subtypes.
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Affiliation(s)
- Mitchell M McCartney
- Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA
- UC Davis Lung Center, Davis, CA, USA
- VA Northern California Health Care System, Mather, CA, USA
| | - Eva Borras
- Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA
- UC Davis Lung Center, Davis, CA, USA
| | - Dante E Rojas
- Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA
- UC Davis Lung Center, Davis, CA, USA
| | - Tristan L Hicks
- Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA
- UC Davis Lung Center, Davis, CA, USA
| | - Katherine L Hamera
- Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA
- UC Davis Lung Center, Davis, CA, USA
| | - Nam K Tran
- Department of Pathology and Laboratory Medicine, UC Davis, Sacramento, CA, USA
| | - Tina Tham
- Department of Internal Medicine, UC Davis, Sacramento, CA, USA
| | - Maya M Juarez
- Department of Internal Medicine, UC Davis, Sacramento, CA, USA
| | | | - Nicholas J Kenyon
- UC Davis Lung Center, Davis, CA, USA
- VA Northern California Health Care System, Mather, CA, USA
- Department of Internal Medicine, UC Davis, Sacramento, CA, USA
| | - Cristina E Davis
- Mechanical and Aerospace Engineering, UC Davis, Davis, CA, USA.
- UC Davis Lung Center, Davis, CA, USA.
- VA Northern California Health Care System, Mather, CA, USA.
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5
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Revel’skii AI, Samokhin AS, Anaev EK. Comparison between the Results of the Gas Chromatography–Mass Spectrometry Analysis of Solutions of the Silyl Derivatives of Dried Exhaled Breath Condensate Samples from Patients with Bronchial Asthma and COPD and Healthy Volunteers. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822110090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Xu F, Zhou J, Yang H, Chen L, Zhong J, Peng Y, Wu K, Wang Y, Fan H, Yang X, Zhao Y. Recent advances in exhaled breath sample preparation technologies for drug of abuse detection. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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7
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Revelsky AI, Kozyr’ AS, Samokhin AS, Anaev EK, Revelsky IA. Lyophilization with Subsequent Derivatization vs Microextraction by Packed Sorbent (MEPS) in the Analysis of Exhaled Breath Condensate by Gas Chromatography–Mass Spectrometry. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822100136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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8
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Hu S, McCartney MM, Arredondo J, Sankaran-Walters S, Borras E, Harper RW, Schivo M, Davis CE, Kenyon NJ, Dandekar S. Inactivation of SARS-CoV-2 in clinical exhaled breath condensate samples for metabolomic analysis. J Breath Res 2021; 16:10.1088/1752-7163/ac3f24. [PMID: 34852327 PMCID: PMC9809239 DOI: 10.1088/1752-7163/ac3f24] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 12/01/2021] [Indexed: 01/05/2023]
Abstract
Exhaled breath condensate (EBC) is routinely collected and analyzed in breath research. Because it contains aerosol droplets, EBC samples from SARS-CoV-2 infected individuals harbor the virus and pose the threat of infectious exposure. We report for the first time a safe and consistent method to fully inactivate SARS-CoV-2 in EBC samples and make EBC samples safe for processing and analysis. EBC samples containing infectious SARS-CoV-2 were treated with several concentrations of acetonitrile. The most commonly used 10% acetonitrile treatment for EBC processing failed to completely inactivate the virus in samples and viable virus was detected by the assay of SARS-CoV-2 infection of Vero E6 cells in a biosafety level 3 laboratory. Treatment with either 50% or 90% acetonitrile was effective to completely inactivate the virus, resulting in safe, non-infectious EBC samples that can be used for metabolomic analysis. Our study provides SARS-CoV-2 inactivation protocol for the collection and processing of EBC samples in the clinical setting and for advancing to metabolic assessments in health and disease.
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Affiliation(s)
- Shuang Hu
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA 95616, United States of America
| | - Mitchell M McCartney
- Mechanical and Aerospace Engineering, University of California Davis, Davis, CA 95616, United States of America,UC Davis Lung Center, Davis, CA 95616, United States of America,VA Northern California Health Care System, Mather, CA 95655, United States of America
| | - Juan Arredondo
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA 95616, United States of America
| | - Sumathi Sankaran-Walters
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA 95616, United States of America
| | - Eva Borras
- Mechanical and Aerospace Engineering, University of California Davis, Davis, CA 95616, United States of America,UC Davis Lung Center, Davis, CA 95616, United States of America
| | - Richart W Harper
- UC Davis Lung Center, Davis, CA 95616, United States of America,VA Northern California Health Care System, Mather, CA 95655, United States of America,Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, United States of America
| | - Michael Schivo
- UC Davis Lung Center, Davis, CA 95616, United States of America,VA Northern California Health Care System, Mather, CA 95655, United States of America,Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, United States of America
| | - Cristina E Davis
- Mechanical and Aerospace Engineering, University of California Davis, Davis, CA 95616, United States of America,UC Davis Lung Center, Davis, CA 95616, United States of America,VA Northern California Health Care System, Mather, CA 95655, United States of America
| | - Nicholas J Kenyon
- UC Davis Lung Center, Davis, CA 95616, United States of America,VA Northern California Health Care System, Mather, CA 95655, United States of America,Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, United States of America
| | - Satya Dandekar
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA 95616, United States of America,Author to whom any correspondence should be addressed.
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Borras E, McCartney MM, Thompson CH, Meagher RJ, Kenyon NJ, Schivo M, Davis CE. Exhaled breath biomarkers of influenza infection and influenza vaccination. J Breath Res 2021; 15. [PMID: 34343985 DOI: 10.1088/1752-7163/ac1a61] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/03/2021] [Indexed: 11/12/2022]
Abstract
Respiratory viral infections are considered a major public health threat, and breath metabolomics can provide new ways to detect and understand how specific viruses affect the human pulmonary system. In this pilot study, we characterized the metabolic composition of human breath for an early diagnosis and differentiation of influenza viral infection, as well as other types of upper respiratory viral infections. We first studied the non-specific effects of planned seasonal influenza vaccines on breath metabolites in healthy subjects after receiving the immunization. We then investigated changes in breath content from hospitalized patients with flu-like symptoms and confirmed upper respiratory viral infection. The exhaled breath was sampled using a custom-made breath condenser, and exhaled breath condensate (EBC) samples were analysed using liquid chromatography coupled to quadruplole-time-of-flight mass spectrometer (LC-qTOF). All metabolomic data was analysed using both targeted and untargeted approaches to detect specific known biomarkers from inflammatory and oxidative stress biomarkers, as well as new molecules associated with specific infections. We were able to find clear differences between breath samples collected before and after flu vaccine administration, together with potential biomarkers that are related to inflammatory processes and oxidative stress. Moreover, we were also able to discriminate samples from patients with flu-related symptoms that were diagnosed with confirmatory respiratory viral panels (RVP). RVP positive and negative differences were identified, as well as differences between specific viruses defined. These results provide very promising information for the further study of the effect of influenza A and other viruses in human systems by using a simple and non-invasive specimen like breath.
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Affiliation(s)
- Eva Borras
- Department of Mechanical and Aerospace Engineering, University of California, Davis, Mechanical and Aerospace Engineering, Davis, California, 95616, UNITED STATES
| | - Mitchell M McCartney
- Mechanical and Aerospace Engineering, University of California - Davis, Mechanical and Aerospace Engineering, Davis, California, 95616, UNITED STATES
| | - Cai Hugo Thompson
- Mechanical and Aerospace Engineering, UC Davis, 1 Shields Avenue, Davis, California, 95616, UNITED STATES
| | - Robert J Meagher
- Sandia National Laboratories California, 7011 East Avenue, Livermore, California, 94551-0969, UNITED STATES
| | - Nicholas J Kenyon
- Sacramento Medical Center, UC Davis Health System, Sacramento, CA 795187, USA, Sacramento, California, 95616, UNITED STATES
| | - Michael Schivo
- Department of Internal Medicine, UC Davis Health System, 4150 V Street, Suite 3100, Sacramento, CA 95817, USA, Sacramento, 95616, UNITED STATES
| | - Cristina E Davis
- Department of Mechanical and Aerospace Engineering, University of California - Davis, Davis, USA, Davis, California, 95616, UNITED STATES
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10
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Borras E, Schrumpf L, Stephens N, Weimer BC, Davis CE, Schelegle ES. Novel LC-MS-TOF method to detect and quantify ascorbic and uric acid simultaneously in different biological matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1168:122588. [PMID: 33690092 DOI: 10.1016/j.jchromb.2021.122588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/03/2021] [Accepted: 02/06/2021] [Indexed: 12/29/2022]
Abstract
Ascorbic acid (AA) and uric acid (UA) are known as two of the major antioxidants in biological fluids. We report a novel liquid chromatography-mass spectrometry with time-of-flight (LC-MS-TOF) method for the simultaneous quantification of ascorbic and uric acids using MPA, antioxidant solution and acetonitrile as a protein precipitating agent. Both compounds were separated from interferences using a reverse phase C18 column with water and acetonitrile gradient elution (both with formic acid) and identified and quantified by MS in the negative ESI mode. Isotope labeled internal standards were also added to ensure the accuracy of the measures. The method was validated for exhaled breath condensate (EBC), nasal lavage (NL) and plasma samples by assessing selectivity, linearity, accuracy and precision, recovery and matrix effect and stability. Sample volumes below 250 µL were used and linear ranges were determined between 1 - 25 and 1 - 40 µg/mL for ascorbic and uric acid, respectively, for plasma samples, and between 0.05 - 5 (AA) and 0.05 - 7.5 (UA) µg/mL for EBC and NL samples. The new method was successfully applied to real samples from subjects that provided each of the studied matrices. Results showed higher amounts determined in plasma samples, with similar profiles for AA and UA in EBC and NL but at much lower concentrations.
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Affiliation(s)
- Eva Borras
- Mechanical and Aerospace Engineering, University of California, Davis, Davis, CA, USA
| | - Leah Schrumpf
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA
| | - Noelle Stephens
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA
| | - Bart C Weimer
- Department of Population Health and Reproduction, Veterinary Medicine School, University of California, Davis, Davis, CA, USA
| | - Cristina E Davis
- Mechanical and Aerospace Engineering, University of California, Davis, Davis, CA, USA; VA Northern California Health Care System, 10535 Hospital Way, Mather, CA 95655, USA
| | - Edward S Schelegle
- Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA.
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11
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Schmidt AJ, Borras E, Kenyon NJ, Davis CE. Investigating the relationship between breath aerosol size and exhaled breath condensate (EBC) metabolomic content. J Breath Res 2020; 14:047104. [PMID: 33021211 DOI: 10.1088/1752-7163/abb764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Exhaled breath aerosols contain valuable metabolomic content due to gas exchange with blood at the alveolar capillary interface in the lung. Passive and selective filtering of these aerosols and droplets may reduce the amount of saliva contaminants and serve as an aid to enhance targeted metabolomic content when sampled in exhaled breath condensate (EBC). It is currently unknown if breath aerosol size distribution affects the types or abundances of metabolites sampled through EBC. This pilot study uses a previously described hand-held human breath sampler device with varying notch filter geometries to redirect the trajectory of breath aerosols based on size. Ten notch filter lengths were simulated with the device to calculate the effect of filter length on the breath aerosol size distribution and the proportion of aerosols which make their way through to an EBC collection tube. From three notch filter lengths, we investigate metabolite content of various aerosol fractions. We analyzed the non-volatile fraction of breath condensate with high performance liquid chromatography-mass spectrometry for broad metabolite coverage. We hypothesize that: (1) increasing the length of the notch filter in this device will prevent larger aerosols from reaching the collection tube thus altering the breath aerosol size distribution sampled in EBC; and (2) there is not a systematic large-scale difference in EBC metabolomic content that correlates with breath aerosol size. From simulation results, particles typically larger than 10 µm were filtered out. This indicates that a longer notch filter in this device prevents larger particles from reaching the collection tube thus altering the aerosol particle size distribution. Most compounds were commonly present in all three filter lengths tested, and we did not see strong statistical evidence of systematic metabolite differences between breath aerosol size distributions.
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Affiliation(s)
- Alexander J Schmidt
- Department of Mechanical and Aerospace Engineering, University of California Davis, Davis, CA, United States of America
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12
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Walker HJ, Burrell MM. Could breath analysis by MS could be a solution to rapid, non-invasive testing for COVID-19? Bioanalysis 2020; 12:1213-1217. [PMID: 32734782 PMCID: PMC7466950 DOI: 10.4155/bio-2020-0125] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 06/11/2020] [Indexed: 01/13/2023] Open
Affiliation(s)
- Heather J Walker
- biOMICS Facility, Department of Animal & Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
| | - Michael M Burrell
- biOMICS Facility, Department of Animal & Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK
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13
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McCartney MM, Thompson CJ, Klein LR, Ngo JH, Seibel JD, Fabia F, Simms LA, Borras E, Young BS, Lara J, Turnlund MW, Nguyen AP, Kenyon NJ, Davis CE. Breath carbonyl levels in a human population of seven hundred participants. J Breath Res 2020; 14:046005. [PMID: 32272460 DOI: 10.1088/1752-7163/ab8865] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Oxidative stress is associated with numerous health conditions and disorders, and aldehydes are known biomarkers of oxidative stress that can be non-invasively measured in exhaled human breath. Few studies report breath aldehyde levels in human populations, and none claim participant numbers in the hundreds or more. Further, the breath community must first define the existing aldehyde concentration variance in a normal population to understand when these levels are significantly perturbed by exogenous stressors or health conditions. In this study, we collected breath samples from 692 participants and quantified C4-C10 straight chain aldehyde levels. C9 aldehyde was the most abundant in breath, followed by C6. C4 and C5 appear to have bimodal distributions. Post hoc, we mined our dataset for other breath carbonyls captured by our assay, which involves elution of breath samples onto a solid phase extraction cartridge, derivatization and liquid chromatography-quadrupole time of flight mass spectrometry (LC-qTOF). We found a total of 21 additional derivatized compounds. Using self-reported demographic factors from our participants, we found no correlation between these breath carbonyls and age, gender, body mass index (BMI), ethnicity or smoking habit (tobacco and marijuana). This work was preceded by a small confounders study, which was intended to refine our breath collection procedure. We found that breath aldehyde levels can be affected by participants' using scented hygiene products such as lotions and mouthwashes, while collecting consecutive breath samples, rinsing the mouth with water, and filtering inspired air did not have an effect. Using these parameters to guide our sampling, subjects were instructed to avoid the prior conditions to provide a breath sample for our study.
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Affiliation(s)
- Mitchell M McCartney
- Mechanical and Aerospace Engineering, University of California, Davis, Davis, CA, United States of America
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14
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Maniscalco M, Cutignano A, Paris D, Melck DJ, Molino A, Fuschillo S, Motta A. Metabolomics of Exhaled Breath Condensate by Nuclear Magnetic Resonance Spectroscopy and Mass Spectrometry: A Methodological Approach. Curr Med Chem 2020; 27:2381-2399. [DOI: 10.2174/0929867325666181008122749] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/30/2018] [Accepted: 08/06/2018] [Indexed: 12/15/2022]
Abstract
:
Respiratory diseases present a very high prevalence in the general population, with an
increase in morbidity, mortality and health-care expenses worldwide. They are complex and heterogeneous
pathologies that may present different pathological facets in different subjects, often
with personal evolution. Therefore, there is a need to identify patients with similar characteristics,
prognosis or treatment, defining the so-called phenotype, but also to mark specific differences
within each phenotype, defining the endotypes.
:
Biomarkers are very useful to study respiratory phenotypes and endotypes. Metabolomics, one of
the recently introduced “omics”, is becoming a leading technique for biomarker discovery. For the
airways, metabolomics appears to be well suited as the respiratory tract offers a natural matrix, the
Exhaled Breath Condensate (EBC), in which several biomarkers can be measured. In this review,
we will discuss the main methodological issues related to the application of Nuclear Magnetic
Resonance (NMR) spectroscopy and Mass Spectrometry (MS) to EBC metabolomics for investigating
respiratory diseases.
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Affiliation(s)
- Mauro Maniscalco
- Pulmonary Rehabilitation Unit, ICS Maugeri SpA IRCCS, Via Bagni Vecchi 1, 82037 Telese Terme (Benevento), Italy
| | - Adele Cutignano
- Institute of Biomolecular Chemistry, National Research Council, Via Campi Flegrei 34, Comprensorio Olivetti Edificio A, 80078 Pozzuoli (Naples), Italy
| | - Debora Paris
- Institute of Biomolecular Chemistry, National Research Council, Via Campi Flegrei 34, Comprensorio Olivetti Edificio A, 80078 Pozzuoli (Naples), Italy
| | - Dominique J. Melck
- Institute of Biomolecular Chemistry, National Research Council, Via Campi Flegrei 34, Comprensorio Olivetti Edificio A, 80078 Pozzuoli (Naples), Italy
| | - Antonio Molino
- Department of Respiratory Medicine, University Federico II, 80131 Naples, Italy
| | - Salvatore Fuschillo
- Pulmonary Rehabilitation Unit, ICS Maugeri SpA IRCCS, Via Bagni Vecchi 1, 82037 Telese Terme (Benevento), Italy
| | - Andrea Motta
- Institute of Biomolecular Chemistry, National Research Council, Via Campi Flegrei 34, Comprensorio Olivetti Edificio A, 80078 Pozzuoli (Naples), Italy
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15
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Kononikhin AS, Zakharova NV, Yusupov AE, Ryabokon AM, Fedorchenko KY, Indeykina MI, Bugrova AE, Spassky AI, Popov IA, Varfolomeev SD, Nikolaev EN. Study of the Molecular Composition of Exhaled Breath Condensate by High-Resolution Mass Spectrometry. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793119060216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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16
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Ghosh C, Singh V, Grandy J, Pawliszyn J. Recent advances in breath analysis to track human health by new enrichment technologies. J Sep Sci 2019; 43:226-240. [PMID: 31826324 DOI: 10.1002/jssc.201900769] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/31/2019] [Accepted: 11/26/2019] [Indexed: 12/15/2022]
Abstract
Detection of biomarkers in exhaled breath has been gaining increasing attention as a tool for diagnosis of specific diseases. However, rapid and accurate quantification of biomarkers associated with specific diseases requires the use of analytical methods capable of fast sampling and preconcentration from breath matrix. In this regard, solid phase microextraction and needle trap technology are becoming increasingly popular in the field of breath analysis due to the unique benefits imparted by such methods, such as the integration of sampling, extraction, and preconcentration in a single step. This review discusses recent advances in breath analysis using these sample preparation techniques, providing a summary of recent developments of analytical methods based on breath volatile organic compounds analysis, including the successful identification of various biomarkers related to human diseases.
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Affiliation(s)
- Chiranjit Ghosh
- Department of Chemistry, 200 University Avenue West, University of Waterloo, Ontario, Canada
| | - Varoon Singh
- Department of Chemistry, 200 University Avenue West, University of Waterloo, Ontario, Canada
| | - Jonathan Grandy
- Department of Chemistry, 200 University Avenue West, University of Waterloo, Ontario, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, 200 University Avenue West, University of Waterloo, Ontario, Canada
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17
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Borras E, Cheng A, Wun T, Reese KL, Frank M, Schivo M, Davis CE. Detecting opioid metabolites in exhaled breath condensate (EBC). J Breath Res 2019; 13:046014. [PMID: 31349234 DOI: 10.1088/1752-7163/ab35fd] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Exhaled breath condensate (EBC) collection provides a promising matrix for bioanalysis of endogenous biomarkers of health and also for exogenous compounds like drugs. There is little information regarding drugs and their metabolites contained in breath, as well as their pharmacokinetics. In this present work, we use a simple and non-invasive technique to collect EBC from chronic pain patients using different analgesic opioid drugs to manage pain. Six patients received continuous infusion of morphine and hydromorphone intravenously (IV), together with other analgesic drugs (IV and orally). Repeated sampling of serum and EBC was done at two time points separated by 90 min. The EBC was collected using a glass tube surrounded by dry ice, and an ethanol solvent wash of the glass was performed after EBC extraction to retrieve the apolar compounds stuck to the glass surface. All samples were analyzed with liquid chromatography coupled to mass spectrometry (LC-MS/MS) to identify possible metabolites present in the sample, and to quantify the drugs being used. Several metabolites, such as normorphine (norM), norhydromorphone (norHM) and dihydromorphone (diHM) were detected in both fractions, while hydromorphone 3-glucuronide (HM 3G) was only detected in the solvent rinse fraction. Results were correlated to explain the pharmacokinetics of the main drugs administered. This pilot study presented promising correlations between drug concentrations in blood and breath at different time points for norM, norHM and HM 3G.
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Affiliation(s)
- Eva Borras
- Department of Mechanical and Aerospace Engineering, One Shields Avenue, University of California Davis, Davis, CA 95616, United States of America
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18
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19
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Clinical metabolomics of exhaled breath condensate in chronic respiratory diseases. Adv Clin Chem 2018; 88:121-149. [PMID: 30612604 DOI: 10.1016/bs.acc.2018.10.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chronic respiratory diseases (CRDs) are complex multifactorial disorders involving the airways and other lung structures. The development of reliable markers for an early and accurate diagnosis, including disease phenotype, and prediction of the response and/or adherence to treatment prescribed are essential points for the correct management of CRDs. Beside the traditional techniques to detect biomarkers, "omics" sciences have stimulated interest in clinical field as they could potentially improve the study of disease phenotype. Perturbations in a variety of metabolic and signaling pathways could contribute an understanding of CRDs pathogenesis. In particular, metabolomics provides powerful tools to map biological perturbations and their relationship with disease pathogenesis. The exhaled breath condensate (EBC) is a natural matrix of the respiratory tract, and is well suited for metabolomics studies. In this article, we review the current state of metabolomics methodology applied to EBC in the study of CRDs.
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20
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Peterová E, Chládek J, Kohoutová D, Knoblochová V, Morávková P, Vávrová J, Řezáčová M, Bureš J. Exhaled Breath Condensate: Pilot Study of the Method and Initial Experience in Healthy Subjects. ACTA MEDICA (HRADEC KRÁLOVÉ) 2018; 61:8-16. [PMID: 30012244 DOI: 10.14712/18059694.2018.17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Analysis of Exhaled breath condensate (EBC) is a re-discovered approach to monitoring the course of the disease and reduce invasive methods of patient investigation. However, the major disadvantage and shortcoming of the EBC is lack of reliable and reproducible standardization of the method. Despite many articles published on EBC, until now there is no clear consensus on whether the analysis of EBC can provide a clue to diagnosis of the diseases. The purpose of this paper is to investigate our own method, to search for possible standardization and to obtain our own initial experience. Thirty healthy volunteers provided the EBC, in which we monitored the density, pH, protein, chloride and urea concentration. Our results show that EBC pH is influenced by smoking, and urea concentrations are affected by the gender of subjects. Age of subjects does not play a role. The smallest coefficient of variation between individual volunteers is for density determination. Current limitations of EBC measurements are the low concentration of many biomarkers. Standardization needs to be specific for each individual biomarker, with focusing on optimal condensate collection. EBC analysis has a potential become diagnostic test, not only for lung diseases.
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Affiliation(s)
- Eva Peterová
- 2nd Department of Internal Medicine - Gastroenterology, Charles University, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové, Czech Republic. .,Department of Medical Biochemistry, Charles University, Faculty of Medicine in Hradec Králové, Czech Republic.
| | - Jaroslav Chládek
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Králové, Czech Republic
| | - Darina Kohoutová
- 2nd Department of Internal Medicine - Gastroenterology, Charles University, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové, Czech Republic
| | - Veronika Knoblochová
- 2nd Department of Internal Medicine - Gastroenterology, Charles University, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové, Czech Republic
| | - Paula Morávková
- 2nd Department of Internal Medicine - Gastroenterology, Charles University, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové, Czech Republic
| | - Jaroslava Vávrová
- Institute of Clinical Biochemistry and Diagnostics, Charles University, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové, Czech Republic
| | - Martina Řezáčová
- Department of Medical Biochemistry, Charles University, Faculty of Medicine in Hradec Králové, Czech Republic
| | - Jan Bureš
- 2nd Department of Internal Medicine - Gastroenterology, Charles University, Faculty of Medicine in Hradec Králové, University Hospital Hradec Králové, Czech Republic
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21
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Roszkowska A, Miękus N, Bączek T. Application of solid-phase microextraction in current biomedical research. J Sep Sci 2018; 42:285-302. [DOI: 10.1002/jssc.201800785] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Anna Roszkowska
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Medical University of Gdańsk; Gdańsk Poland
| | - Natalia Miękus
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Medical University of Gdańsk; Gdańsk Poland
- Department of Animal and Human Physiology; Faculty of Biology; University of Gdańsk; Gdańsk Poland
| | - Tomasz Bączek
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Medical University of Gdańsk; Gdańsk Poland
- Department of Nursing; Faculty of Health Sciences; Pomeranian University of Słupsk; Słupsk Poland
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22
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Zamuruyev KO, Schmidt AJ, Borras E, McCartney MM, Schivo M, Kenyon NJ, Delplanque JP, Davis CE. Power-efficient self-cleaning hydrophilic condenser surface for portable exhaled breath condensate (EBC) metabolomic sampling. J Breath Res 2018; 12:036020. [PMID: 29771240 PMCID: PMC6015477 DOI: 10.1088/1752-7163/aac5a5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this work, we present a hydrophilic self-cleaning condenser surface for the collection of biological and environmental aerosol samples. The condenser is installed in a battery-operated hand-held breath sampling device. The device performance is characterized by the collection and analysis of exhaled breath samples from a group of volunteers. The exhaled breath condensate is collected on a subcooled condenser surface, transferred into a storage vial, and its chemical content is analyzed using mass spectrometric methods. The engineered surface supports upon it a continuous condensation cycle, and this allows the collection of liquid samples exceeding the saturation mass/area limit of a plain hydrophilic surface. The condenser surface employs two constituent parameters: a low surface energy barrier to enhance nucleation and condensation efficiency, and a network of surface microstructures to create a self-cleaning mechanism for fluid aggregation into a reservoir. Removal of the liquid condensate from the condenser surface prevents the formation of a thick liquid layer, and thus maintains a continuous condensation cycle with a minimum decrease in heat transfer efficiency as condensation occurs on the surface. The self-cleaning condenser surfaces may have a number of applications in the collection of biological, chemical, or environmental aerosol samples. Sample phase conversion to liquid can facilitate sample manipulation and chemical analysis of matrices with low concentrations. Here, we demonstrate the use of a self-cleaning microcondenser for the collection of exhaled breath condensate with a hand-held portable device. All breath collections with the two devices were performed with the same group of volunteers under UC Davis IRB protocol 63701-3.
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Affiliation(s)
- Konstantin O Zamuruyev
- Department of Mechanical and Aerospace Engineering, One Shields Avenue, University of California, Davis, Davis, California 95616, United States of America
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23
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Effect of temperature control on the metabolite content in exhaled breath condensate. Anal Chim Acta 2017; 1006:49-60. [PMID: 30016264 DOI: 10.1016/j.aca.2017.12.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 12/14/2017] [Accepted: 12/16/2017] [Indexed: 01/13/2023]
Abstract
The non-invasive, quick, and safe collection of exhaled breath condensate makes it a candidate as a diagnostic matrix in personalized health monitoring devices. The lack of standardization in collection methods and sample analysis is a persistent limitation preventing its practical use. The collection method and hardware design are recognized to significantly affect the metabolomic content of EBC samples, but this has not been systematically studied. Here, we completed a series of experiments to determine the sole effect of collection temperature on the metabolomic content of EBC. Temperature is a likely parameter that can be controlled to standardize among different devices. The study considered six temperature levels covering two physical phases of the sample; liquid and solid. The use of a single device in our study allowed keeping saliva filtering and collector surface effects as constant parameters and the temperature as a controlled variable; the physiological differences were minimized by averaging samples from a group of volunteers and a period of time. After EBC collection, we used an organic solvent rinse to collect the non-water-soluble compounds from the condenser surface. This additional matrix enhanced metabolites recovery, was less dependent on temperature changes, and may possibly serve as an additional pointer to standardize EBC sampling methodologies. The collected EBC samples were analyzed with a set of mass spectrometry methods to provide an overview of the compounds and their concentrations present at each temperature level. The total number of volatile and polar non-volatile compounds slightly increased in each physical phase as the collection temperature was lowered to minimum, 0 °C for liquid and -30, -56 °C for solid. The low-polarity non-volatile compounds showed a weak dependence on the collection temperature. The metabolomic content of EBC samples may not be solely dependent on temperature but may be influenced by other phenomena such as greater sample dilution due to condensation from the ambient air at colder temperatures, or due to adhesion properties of the collector surface and occurring chemical reactions. The relative importance of other design parameters such as condenser coating versus temperature requires further investigation.
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