title: The impact of the sleep apnea syndrome on oxidant-antioxidant balance in the blood of overweight and obese patients.
abstract: The aim of the study was to assess the markers of oxidant-antioxidant status in excess body mass index (BMI) persons with and without the obstructive sleep apnea syndrome (OSAS). In overweight (BMI-1: 25.0-29.9 kg/m(2)) control and OSAS and obese (BMI-2: 30.0-34.9 kg/m(2)) control and OSAS subjects with no acute or chronic disorder the following markers were determined: concentration of plasma total antioxidant status, TAS, (Randox); activity of erythrocyte Cu, Zn-superoxide dysmutase, SOD, (Randox); plasma concentration of thiobarbituric acid reacting substances, TBARS, (Yagi method). BMI-1-OSA presented decreased SOD, compared with the BMI-1-C group (P=0.006). BMI-2-OSA showed both SOD (P=0.002) and TAS (P=0.047) decreased, and elevated TBARS (P=0.03) compared with the BMI-2-C group. There was a positive correlation between TAS & SOD and a negative one between TAS & TBARS in the BMI-1-C group. In BMI-2-C, a negative correlation between TAS & TBARS was observed. We conclude that OSAS decreases the blood antioxidant status in high BMI persons and may change the relationship between oxidative stress markers.
authors.affiliation: Department of Clinical Biochemistry and Laboratory Medicine, Poznan University of Medical Sciences, Poznan, Poland. ewysocka@ump.edu.pl
authors.forename: E
authors.initials: E
authors.lastname: Wysocka
authors.forename: S
authors.initials: S
authors.lastname: Cofta
authors.forename: M
authors.initials: M
authors.lastname: Cymerys
authors.forename: J
authors.initials: J
authors.lastname: Gozdzik
authors.forename: L
authors.initials: L
authors.lastname: Torlinski
authors.forename: H
authors.initials: H
authors.lastname: Batura-Gabryel
mesh_terms: D000328:Adult; D000368:Aged; D000975:Antioxidants / Q000378:metabolism*; D015992:Body Mass Index; D004912:Erythrocytes / Q000201:enzymology; D005110:Extracellular Space / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications / Q000378:metabolism*; D050177:Overweight / Q000150:complications / Q000378:metabolism*; D016877:Oxidants / Q000097:blood*; D017286:Polysomnography; D012891:Sleep Apnea Syndromes / Q000150:complications / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism
chemical_list: D000975:Antioxidants; D016877:Oxidants; D017392:Thiobarbituric Acid Reactive Substances; D013482:Superoxide Dismutase