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    Epicardial fat thickness is associated with oxidative stress index in cardiac syndrome X
    (İnönü Üniversitesi, 2020) Özbiçer, Süleyman; Kalkan, Gülhan; Gür, Mustafa; Topuz, Mustafa; Kaypaklı, Onur; Koç, Mevlüt; Erel, Özcan
    AbstractAim: We aimed to investigate the relationship between oxidative parameters- total oxidant status (TOS), total antioxidant capacity (TAC), and oxidative stress index (OSI)- and EFT in patients with CSX. Without clinically significant coronary artery disease, cardiac syndrome X (CSX) is characterized by cardiac ischemia, and chest pain. However, there is some evidence about increased oxidative stress in CSX patients; the relationship between oxidative stress parameters and epicardial fat thickness (EFT) is not well established in this population.Material and Methods: : One hundred and twenty-two patients with normal coronary arteries (73 female, 49 males, mean age 56.71 ± 10.69 years) were enrolled in the study. The study population was divided into two groups according to their OSI. Oxidative stress index below the median was defined as the OSI low group and equal or higher than the median was defined as the OSI high group.Results: EFT was higher in the high OSI group than the low OSI group (6 (3.9 – 8.9) vs. 5.4 (0.56 – 7.2), p= 0.032). In bivariate correlation analysis EFT was positively correlated with OSI and TOS (r=0.242, p=0.036 and r=0.234, p=0.025 respectively). In binary logistic regression analysis, EFT was found to be an independent predictor of OSI.Conclusion: : In our study, EFT was independently associated with OSI in CSX patients. This finding suggests that EFT may be a marker of increased oxidative stress in CSX.
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    The relationship between low thiol levels and major adverse cardiovascular events after primary percutaneous coronary intervention in patients with STEMI
    (Turkish Soc Cardiology, 2018) Akkus, Oguz; Topuz, Mustafa; Koca, Hasan; Harbalioglu, Hazar; Kaypakli, Onur; Kaplan, Mehmet; Sen, Omer
    Ojective: The aim of this study was to investigate whether low thiol levels are associated with peri-procedural factors during primary percutaneous coronary intervention (pPCI) upon admission with ST-segment elevation myocardial infarction (STEMI), and the prognostic value at 6-month follow-up. Methods: A total of 241 consecutive acute STEMI patients who underwent pPCI and a control group of 67 individuals with a normal coronary angiography were enrolled in the study. Result: While age, contrast-induced nephropathy, N-terminal prohormone of brain natriuretic peptide (NT-proBNP), stent length, and creatinine were related to native thiol, NT-proBNP, contrast-induced nephropathy, and creatinine were related to total thiol. NT-proBNP was also related to the disulphide level. The left ventricular ejection fraction (LVEF) and the levels of native thiol, total thiol, low-density lipoprotein, and serum albumin were found to be independent predictors of major adverse cardiovascular events (MACEs) during 6 months of follow-up. Conclusion: Initial lower native thiol, total thiol, LVEF, LDL, and serum albumin may be used to identify patients with an increased long-term risk of unfavorable cardiac events in case of STEMI.