Urinary F2-isoprostane metabolite levels in children with sleep-disordered breathing

• DOI: 10.1007/s11325-006-0079-5
• Publication Date: 2006-10-06T06:26:02Z
• Authors: Hawley E. Montgom...; Jyoti Krishna; L. Jackson Roberts; David Gozal
• Keywords: Male; F2-Isoprostanes; 0303 health sciences; Polysomnography; Body Mass Index; 3. Good health; Oxygen; Oxidative Stress; 03 medical and health sciences; Sleep Apnea Syndromes; Reference Values; Humans; Female; Child

Oxidant stress-related mechanisms have been proposed as a major contributor to the increased prevalence of cardiovascular morbidity in adult patients with sleep-disordered breathing. Isoprostanes provide a reliable biomarker of oxidant injury in vivo. The purpose of the present study was to examine the hypothesis that oxidant stress, as evidenced by increased levels of F2-isoprostane metabolites (IsoP-m) in urine, is present in children with a spectrum of sleep-disordered breathing. Assays were performed on urinary samples obtained from each of 47 pediatric patients immediately upon awakening after standard overnight polysomnography. Of the subjects, 15% had mild, 9% had moderate, and 6% had severe sleep-disordered breathing. After controlling for correlations between BMI and IsoP-m and SpO2 values, IsoP-m values were unrelated to any polysomnographic measures. The absence of increased levels of urinary F2-isoprostane metabolites in children with sleep-disordered breathing suggests that oxidative stress is not a significant feature of pediatric sleep-disordered breathing.