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Exhaled breath 8-isoprostane as a marker of asthma severity
INTRODUCTION: Oxidative stress is a non-specific feature of airway inflammation in asthmatics. 8-Isoprostane (8-IP), a prostaglandin-F(2α) isomer, is a relatively new marker of oxidative stress and may be measured in exhaled breath condensate (EBC) of patients with asthma. This research study aimed...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Termedia Publishing House
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3400897/ https://www.ncbi.nlm.nih.gov/pubmed/22852009 http://dx.doi.org/10.5114/aoms.2012.28639 |
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author | Piotrowski, Wojciech J. Majewski, Sebastian Marczak, Jerzy Kurmanowska, Zofia Górski, Paweł Antczak, Adam |
author_facet | Piotrowski, Wojciech J. Majewski, Sebastian Marczak, Jerzy Kurmanowska, Zofia Górski, Paweł Antczak, Adam |
author_sort | Piotrowski, Wojciech J. |
collection | PubMed |
description | INTRODUCTION: Oxidative stress is a non-specific feature of airway inflammation in asthmatics. 8-Isoprostane (8-IP), a prostaglandin-F(2α) isomer, is a relatively new marker of oxidative stress and may be measured in exhaled breath condensate (EBC) of patients with asthma. This research study aimed to evaluate the usefulness of EBC 8-IP as a marker of severity and control of severe adult asthma. MATERIAL AND METHODS: Twenty-seven severe, never-smoking asthmatics were studied. According to positive or negative reversibility testing, this group was subdivided into reversible and irreversible asthma groups. All participants were observed for 8 weeks during which they completed daily diary observations including day and night symptoms, number of awakenings, peak expiratory flow (PEF) variability, daily rescue medication usage and oral steroids consumption. They attended the clinic 3 times and on these occasions spirometry assessments, EBC collection and asthma control tests (ACT) were done. Two control groups were included: 11 healthy never-smokers and 16 newly diagnosed and never-treated, non-smoking mild asthmatics. RESULTS: There were no statistically significant differences between severe asthma and healthy control or never-treated asthma groups in concentrations of EBC 8-IP (median and interquartile range: 4.67; 2.50-27.92 vs. 6.93; 2.5-12.98 vs. 3.80; 2.50-10.73, respectively). No correlations were found between EBC 8-IP and asthma control parameters, such as ACT results, night and day symptoms, consumption of rescue medication, percentage of days free of oral steroids, PEF diurnal variation, lung function test results, forced expiratory volume in the 1 s reversibility, and markers of systemic inflammation. CONCLUSIONS: Our study results suggest that EBC 8-IP measurements are not useful for asthma monitoring. |
format | Online Article Text |
id | pubmed-3400897 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Termedia Publishing House |
record_format | MEDLINE/PubMed |
spelling | pubmed-34008972012-07-31 Exhaled breath 8-isoprostane as a marker of asthma severity Piotrowski, Wojciech J. Majewski, Sebastian Marczak, Jerzy Kurmanowska, Zofia Górski, Paweł Antczak, Adam Arch Med Sci Clinical Research INTRODUCTION: Oxidative stress is a non-specific feature of airway inflammation in asthmatics. 8-Isoprostane (8-IP), a prostaglandin-F(2α) isomer, is a relatively new marker of oxidative stress and may be measured in exhaled breath condensate (EBC) of patients with asthma. This research study aimed to evaluate the usefulness of EBC 8-IP as a marker of severity and control of severe adult asthma. MATERIAL AND METHODS: Twenty-seven severe, never-smoking asthmatics were studied. According to positive or negative reversibility testing, this group was subdivided into reversible and irreversible asthma groups. All participants were observed for 8 weeks during which they completed daily diary observations including day and night symptoms, number of awakenings, peak expiratory flow (PEF) variability, daily rescue medication usage and oral steroids consumption. They attended the clinic 3 times and on these occasions spirometry assessments, EBC collection and asthma control tests (ACT) were done. Two control groups were included: 11 healthy never-smokers and 16 newly diagnosed and never-treated, non-smoking mild asthmatics. RESULTS: There were no statistically significant differences between severe asthma and healthy control or never-treated asthma groups in concentrations of EBC 8-IP (median and interquartile range: 4.67; 2.50-27.92 vs. 6.93; 2.5-12.98 vs. 3.80; 2.50-10.73, respectively). No correlations were found between EBC 8-IP and asthma control parameters, such as ACT results, night and day symptoms, consumption of rescue medication, percentage of days free of oral steroids, PEF diurnal variation, lung function test results, forced expiratory volume in the 1 s reversibility, and markers of systemic inflammation. CONCLUSIONS: Our study results suggest that EBC 8-IP measurements are not useful for asthma monitoring. Termedia Publishing House 2012-07-04 2012-07-04 /pmc/articles/PMC3400897/ /pubmed/22852009 http://dx.doi.org/10.5114/aoms.2012.28639 Text en Copyright © 2012 Termedia & Banach http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License, permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Clinical Research Piotrowski, Wojciech J. Majewski, Sebastian Marczak, Jerzy Kurmanowska, Zofia Górski, Paweł Antczak, Adam Exhaled breath 8-isoprostane as a marker of asthma severity |
title | Exhaled breath 8-isoprostane as a marker of asthma severity |
title_full | Exhaled breath 8-isoprostane as a marker of asthma severity |
title_fullStr | Exhaled breath 8-isoprostane as a marker of asthma severity |
title_full_unstemmed | Exhaled breath 8-isoprostane as a marker of asthma severity |
title_short | Exhaled breath 8-isoprostane as a marker of asthma severity |
title_sort | exhaled breath 8-isoprostane as a marker of asthma severity |
topic | Clinical Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3400897/ https://www.ncbi.nlm.nih.gov/pubmed/22852009 http://dx.doi.org/10.5114/aoms.2012.28639 |
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