Antioxidant status and clinicopathological parameters in patients with Parkinson's disease
AuthorsMiletić Vukajlović, Jadranka
Valenta Šobot, Ana
Drakulić, Dunja R.
Ilić, Tihomir V.
Article (Accepted Version)
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Backgroun / Aim. Constant production of free radicals and antioxidants (AO) in the cell is a part of normal cellular function. Their imbalance might take a part in pathophysiology of many diseases, including Parkinson’s disease (PD). Evaluation of the disease status, prooxidant-antioxidant balance (PAB) and antioxidants are being widely estimated. The aim of this study was to examine potential interaction between several AO variables (GSH, SOD, CAT and PAB) and clinicopathological features of patients with PD, particularly Hoehn and Yahr (H&Y) stage. Methods. A multivariate analysis of variance (MANOVA) was conducted to test the hypothesis of the mean differences between clinicopathological characteristics (gender, age at examination, duration of the disease, and H&Y stage) and AO variables, compared with age/sex matched healthy controls. The study included 91 patients with idiopatic PD patients and 20 healthy controls. Results. The multivariate effect size was estimated at 0.269, p <0....001, implying that 27.0% of the variance of the dependent variables was accounted for H&Y stage. Univariate tests showed that there were significant differences (p <0.001) across the H&Y stage on all AO variables. The H&Y stage remained significant predictor after controlling for the second variable, the disease duration (p <0.001, η2 = 0.249), and there were still significant differences across the H&Y stage on all variables, with effect size ( η2) ranging from 0.132, p =0.011 (lnGSH) to the still high values of 0.535 (lnPAB), 0.627 (lnSOD) and 0.964 (lnCAT). Conclusion. The results indicate that higher level of oxidative stress in blood of PD patients is possibly related to PD stage. Along with reduction of SOD and GSH level, CAT activity was elevated in comparison to healthy subjects. Furthermore, Pwas shifted toward oxidative stress.
Keywords:parkinson disease / superoxide dismutase / catalase / glutathione / prooxidant-antioxidant balance
Source:Vojnosanitetski pregled, 2019, (OnLine-First), 148-148
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