Oxidative stress and quality of life in elderly patients with obstructive sleep apnea syndrome: are there differences after six months of Continuous Positive Airway Pressure treatment?

Author(s)

Yagihara, Fabiana ^[1] ; Lucchesi, Ligia Mendonca ^[1] ; D'Almeida, Vania ^[1] ; de Mello, Marco Tulio ^[1] ; Tufik, Sergio ^[1] ; Azeredo Bittencourt, Lia Rita ^[1]

Affiliation

^[1] Univ Fed Sao Paulo UNIFESP, Dept Psicobiol, Sao Paulo - Brazil

• Document type: Journal article
• Source: Clinics; v. 67, n. 6, p. 565-571, 2012.
• Web of Science Citations: 10

Abstract

OBJECTIVES: This study evaluated the effect of Continuous Positive Airway Pressure treatment on oxidative stress parameters and the quality of life of elderly patients with obstructive sleep apnea syndrome. METHODS: In total, 30 obstructive sleep apnea syndrome patients and 27 subjects without obstructive sleep apnea syndrome were included in this study. Both groups underwent quality of life and oxidative stress evaluations at baseline and after six months. Polysomnography was performed in both groups at baseline and a second time in the obstructive sleep apnea syndrome group after six months of Continuous Positive Airway Pressure treatment. All of the variables were compared between the control and obstructive sleep apnea syndrome groups in this prospective case-control study. RESULTS: The baseline concentrations of the antioxidant enzyme catalase were higher in the obstructive sleep apnea syndrome group than the control group. After Continuous Positive Airway Pressure treatment, the obstructive sleep apnea syndrome group exhibited a reduction in the level of oxidative stress, as indicated by a decrease in the level of lipid peroxidation measured by the malondialdehyde (MDA) concentration [pre: 2.7 nmol malondialdehyde/mL (95% 1.6-3.7) vs. post: 1.3 nmol MDA/mL (0.7-1.9), p<0.01]. Additionally, improvements were observed in two domains covered by the SF-36 questionnaire: functional capacity [pre: 77.4 (69.2-85.5) vs. post: 83.4 (76.9-89.9), p = 0.002] and pain [pre: 65.4 (52.8-78.1) vs. post: 77.8 (67.2-88.3), p = 0.004]. CONCLUSION: Our study demonstrated that the use of Continuous Positive Airway Pressure to treat obstructive sleep apnea syndrome in elderly patients reduced oxidative stress and improved the quality of life. (AU)

• FAPESP's process: 07/06232-0 - The Role of Obstructive Sleep Apnea as Co-adjuvant in the oxidative stress parameters in elderly
• Grantee: Fabiana Tokie Yagihara
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 98/14303-3 - Center for Sleep Studies
• Grantee: Sergio Tufik
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC