title: The importance of exhaled air condensate in assessing the oxidant-antioxidant system in patients with chronic obstructive pulmonary disease.
abstract: The aim of this study was to investigate the relationship between selected lipid peroxidation products as markers of oxidative stress and antioxidant defense capacity in exhaled air condensate in comparison to blood and COPD severity. We detected that the increase of lipids peroxidation products in exhaled air condensate (less in blood) was accompanied by the reduction of total antioxidant capacity (antiradical activity and ceruloplasmin) according to the severity of COPD. Thus, the level of malondialdehyde significantly increased both in blood and exhaled air condensate in COPD1,2,3 (by 24%, 86%, 100% and 58%, 92%, 2,3 times respectively). Antiradical activity level was significantly decreased both in blood and exhaled air condensate in patients with COPD2,3 by 24%, 51% and 23.31% respectively. The results of this study clearly demonstrated the imbalance in oxidant-antioxidant system in advanced COPD.
authors.affiliation: Department of Internal Diseases N1, Belarusian State Medical University. makae@msmi.minsk.by
authors.forename: Aleksandr E
authors.initials: AE
authors.lastname: Makarevich
authors.forename: Dmitry L
authors.initials: DL
authors.lastname: Ivashkevich
mesh_terms: D000328:Adult; D000975:Antioxidants / Q000378:metabolism*; D015415:Biomarkers / Q000032:analysis; D001944:Breath Tests; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D015227:Lipid Peroxidation; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism*; D008875:Middle Aged; D016877:Oxidants / Q000378:metabolism*; D018384:Oxidative Stress; D029424:Pulmonary Disease, Chronic Obstructive / Q000378:metabolism* / Q000503:physiopathology
chemical_list: D000975:Antioxidants; D015415:Biomarkers; D016877:Oxidants; D008315:Malondialdehyde