Resistin and Oxidative Stress as Markers of Atherosclerosis in Obstructive Sleep Apnea

Title:Resistin and Oxidative Stress as Markers of Atherosclerosis in Obstructive Sleep Apnea

Volume: 10 Issue: 2

Author(s): Radostina Vlaeva Cherneva, Ognian Borisov Georgiev, Daniela Stoichkova Petrova, Dinko Georgiev Valev and Julia Ivanova Petrova

Affiliation:

Keywords: Atherosclerosis, insulin resistance, obstructive sleep apnea, oxidative stress, resistin.

Abstract: Introduction: Cardiovascular (CV) morbidity is increased in patients with obstructive sleep apnea (OSA). Oxidative stress and adipose tissue dysfunction are thought to be important factors for the accelerated atherosclerosis in OSA. The role of the various adipokines is however debated.

Aim: The aim of the study was to check whether resitin may be a link between oxidative stress, adiposity and atherosclerosis in OSA patients.

Methods: The common carotid artery (CCA) intima-media thickness (IMT), was measured by ultrasonography in 34 nondiabetic, non-hypertensive patients with untreated OSA. Oxidative stress (urinary 8-isoprostane levels) was measured by mass spectrometry (Cayman Chemical, USA). Insulin resistance was assessed by the homeostasis model assessment for insulin resistance (HOMA-IR). Resistin plasma levels were determined by an ELISA kit. Results: Urinary 8-isoprostanes, but not resistin were associated with the IMT after adjustment for CV risk factors, including HOMA-IR. Resistin levels increased with the degree of OSA severity, but did not correlate to markers of insulin resistance (HOMA-IR) or atherosclerosis. They were, however, associated with the time of sleep at SaO2<90% but not with the urinary 8-isoprostane levels.

Conclusion: In non-diabetic, non-hypertensive OSA patients, resistin plasma levels do not correlate to markers of adiposity, insulin resistance or oxidative stress. IMT was associated only with the levels of oxidative stress (8-urinary isoprostanes).

Cite this article as:

Cherneva Vlaeva Radostina, Georgiev Borisov Ognian, Petrova Stoichkova Daniela, Valev Georgiev Dinko and Petrova Ivanova Julia, Resistin and Oxidative Stress as Markers of Atherosclerosis in Obstructive Sleep Apnea, Current Respiratory Medicine Reviews 2014; 10 (2) . https://dx.doi.org/10.2174/1573398X10666140723172355