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  • Title: Thiol-disulfide as a novel indicator of obstructive sleep apnea.
    Author: Argüder E, Parlak EŞ, Kılıç H, Hezer H, Neşelioğlu S, Hasanoğlu HC, Yalçıner G, Babademez MA, Erel Ö.
    Journal: Clin Respir J; 2020 Jul; 14(7):652-658. PubMed ID: 32142202.
    Abstract:
    INTRODUCTION: Obstructive sleep apnea (OSA) is an oxidative stress disease, which has been considered to be a notable risk and associated with increased cardiovascular morbidity and mortality. Thiol-disulfide homeostasis is as a novel indicator of oxidative stress. OBJECTIVES: We aimed to evaluate thiol-disulfide homeostasis in a large patient population with OSA. METHODS: A total of 230 with OSA and 40 healthy controls were included in the study. Inclusion criteria for OSA patients are having apnoea-hypopnoea index of ≥5/hour, being more than 18 years of age and having no previous treatment for OSA. Thiol-disulfide analysis was done for the patients and control group. Blood thiol-disulfide homeostasis was analysed using the new automatic method, developed by Erel and Neşelioğlu. RESULTS: Among all OSA subjects, 149 (64.8%) were males and the mean ages of the patients were 53.38 ± 10.22. Total thiol, native thiol (SH) and disulfide (SS) levels were significantly lower in OSA group compared to the control group (P < .001, P < .001 and P = .039 respectively). Also, total thiol and native thiol (SH) were significantly different between the groups according to OSA severity (mild-moderate to severe OSA) (P < .001 and P < .001 respectively). Thiol-disulfide redox parameters were correlated with apnoea-hypopnoea index (AHI) scores. CONCLUSION: The present prospective study showed that thiol/disulfide homeostasis was unbalanced in OSA patients. Especially, in OSA patients have low level of thiol/disulfide redox parameters when compared to healthy subjects. Evaluating thiol-disulfide homeostasis in OSA may be a contributing aspect to assessment and monitoring of the patient.
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