Thiol-disulfide as a novel indicator of obstructive sleep apnea

• Published in: The clinical respiratory journal Vol. 14; no. 7; p. 652
• Main Authors: Argüder, Emine, Parlak, Ebru Ş, Kılıç, Hatice, Hezer, Habibe, Neşelioğlu, Salim, Hasanoğlu, Hatice Canan, Yalçıner, Gökhan, Babademez, Mehmet Ali, Erel, Özcan
• Format: Journal Article
• Language: English
• Published: England 01-07-2020
• Subjects: Adult; Cardiovascular Diseases - epidemiology; Cardiovascular Diseases - mortality; Case-Control Studies; Disulfides - blood; Disulfides - metabolism; Female; Homeostasis - physiology; Humans; Male; Middle Aged; Oxidative Stress - physiology; Prospective Studies; Risk Factors; Severity of Illness Index; Sleep Apnea, Obstructive - complications; Sleep Apnea, Obstructive - metabolism; Sleep Apnea, Obstructive - physiopathology; Sulfhydryl Compounds - blood; Sulfhydryl Compounds - metabolism; Turkey - epidemiology; Turkey; thiol-disulfide; antioxidants; obstructive sleep apnea (OSA); oxidative stress; thiol/disulfide homeostasis
• ISSN: 1752-699X
• DOI: 10.1111/crj.13180

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.
We aimed to evaluate thiol-disulfide homeostasis in a large patient population with OSA.
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.
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.
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.