Browsing by Author "Balahoroğlu, R."
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Article Actions of Resveratrol and Serotonin Added To Stored Bloods on Lipid Peroxidation and Oxidative Dna Damage(Yuzuncu Yil Universitesi Tip Fakultesi, 2018) Huyut, Z.; Şekeroğlu, M.R.; Alp, H.H.; Balahoroğlu, R.; Çokluk, E.Stored blood for use in diseases such as acute blood loss, injury and anemia can be maintained for about a month. It was reported that some negative changes called "storage lesions" occur in stored bloods time dependently. In order to delay these changes, preservatives are added to stored bloods. In this study, we aimed to determine the effects of resveratrol and serotonin on oxidative DNA and mitochondrial damage and lipid peroxidation in stored blood. Blood was taken from 10 volunteers to different blood bags and each blood was separated into 3 groups (control, resveratrol and serotonin groups). Malondialdehyde (MDA), ubiquinone-10 (CoQ10) and 8-hydroxy-2-deoxyguanosine/106deoxyguanosine (8-OHdG/106dG) levels were determined at baseline and on the 7th, 14th, 21st and 28th day after addition of resveratrol and serotonin. MDA, CoQ10 and 8-OHdG/106dG levels increased over time in the control and serotonin groups (p<0.05). However, resveratrol protected against the time-dependent increase in MDA and CoQ10 values (p>0.05). MDA and CoQ10 levels were significantly lower in the resveratrol-treated group on the 21st and 28th days compared with the other groups (p<0.05). These results show that oxidation sensitivity increased time dependently in stored blood. However, the addition of resveratrol allowed the extension of the blood’s shelf life by protecting against increased lipid peroxidation and oxidized CoQ10. © 2018, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.Article Impact of Patent Ductus Arteriosus and Subsequent Therapy With Ibuprofen on the Release of S-100b and Oxidative Stress Index in Preterm Infants(International Scientific Literature Inc., 2014) Demir, N.; Ece, İ.; Peker, E.; Kaba, S.; Ustyol, L.; Balahoroğlu, R.; Tuncer, O.Background: Hemodynamically significant patent ductus arteriosus (hsPDA) leads to injury in tissues/organs by reducing perfusion of organs and causing oxidative stress. The purpose of this study was to evaluate the oxidant/antioxidant status in preterm infants with hsPDA by measuring the total antioxidant capacity and total oxidant status and to assess neuronal damage due to oxidant stress related to hsPDA.; Material/Methods: This prospective study included 37 low-birth-weight infants with echocardiographically diagnosed hsPDA treated with oral ibuprofen and a control group of 40 infants without PDA. Blood samples were taken from all infants, and than the total antioxidant capacity (TAC), total oxidant status (TOS), and S-100B protein levels were assessed and oxidative stress index was calculated before and after therapy.; Results: The mean pre-therapy TOS level and oxidative stress index (OSI) value of the patients with hsPDA were significantly higher, but TAC level was lower than in the control group. There were no statistically significant differences in the mean post-therapy values of TOS, TAC, OSI, and S-100B protein between the two groups.; Conclusions: hsPDA may cause cellular injury by increasing oxidative stress and damaging tissue perfusion; however the brain can compensate for oxidative stress and impaired tissue perfusion through well-developed autoregulation systems to decrease tissue injury. © Med Sci Monit 2014.Article In Stored Human Blood, the Inhibitor Effect of Tannic Acid and Caffeic Acid on Lipid Peroxidation and Oxidative Dna Damage(Yuzuncu Yil Universitesi Tip Fakultesi, 2016) Huyut, Z.; Şekeroğlu, M.R.; Balahoroğlu, R.; Alp, H.H.; Çokluk, E.Stored bloods, are exposed to a number of negative changes called as "storage lesions" morphological, biochemical and functional, to begin the first phase of the storage. In this study, we investigated the effects of caffeic and tannic acid in lipid peroxidation and oxidative DNA damage in stored blood. The blood was taken from 10 healthy male individuals to the blood bag containing CPD. Each donor's blood was separated into three groups. The first group was used as the control group with nothing added to the blood. A total of 30 µg/mL caffeic acid and 15 µg/mL tannic acid was added to the second and third group, respectively. Malondialdehyde, ubiquinone-10 and 8-hydroxy-2 deoxyguanosine levels were determined at baseline and on the 7th, 14th, 21st and 28th day, by high pressure liquid chromatography. The MDA and 8-OHdG levels of control and tannic acid groups were increased on the 21st and 28th days (p<0.001), whereas in caffeic acid group was preserved. Also, CoQ10 levels increased in the control group time dependently (p<0.001), but preserved in the other two groups. In addition, CoQ10 and 8-OHdG levels of tannic and especially caffeic acid groups was lower than the control group in the inter-group comparison, in periods of progressing time (p<0.05). These results showed that oxidative stress increased in the stored blood, but adding tannic and caffeic acid into the stored blood can attenuate the effects of oxidation. © 2016, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.Article Levels of Leukocyte Oxidative Dna Damage (8-Ohdg), Serum Coenzyme Q10 and Lipid Peroxidation in the Formation Attacks of Patients With Multiple Sclerosis(Suleyman Demirel University, 2017) Cokluk, E.; Milanlıoğlu, A.; Huyut, Z.; Çilingir, V.; Alp, H.H.; Aydın, M.N.; Balahoroğlu, R.Multiple sclerosis (MS) is a demyelinating disease of the nervous system. Evidence about oxidative stress plays an important role in the pathogenesis of MS is increasing day by day. In our study, we aimed to investigate the effect of oxidative DNA damage and oxidative stress in the pathogenesis of MS disease. Blood samples were obtained from during an attack (Group 1), between attacks (Group 2) of MS patients (20 male and 10 female) and 30 healthy volunteers (Group 3). Malondialdehyde (MDA) levels as indicator of oxidized lipids were detected using flourescence dedector with high pressure liquid chromatograph (HPLC). DNA was extracted from leukocytes of control and patients with MS and then we measured 8-hydroxy-2' -deoxyguanosine (8-OHdG) and deoxyguanosin (dG) by using HPLC method with electrochemical and UV detector, respectively. Measurement of oxidized coenzyme Q10 (CoQ10) and reduced CoQ (CoQ10H) was performed by using UV detector with HPLC method. Serum MDA level of group 1 was significantly higher than those in group 2 and group 3 (p< 0.001). 8-OHdG/106 dG ratio of group 1 was significantly higher than those in group 2 and group 3 (p< 0.001). CoQ10/CoQ10H rates of group 1 were significantly increased compared with group 2 and group 3 (p<0.001). In conclusion, we observed that oxidative DNA damage, lipid and mitochondria oxidative damage were high in blood of patients with MS. It seems that oxidative stress acts a play role the pathogenesis of MS patients as well as induces attacks. © 2017 Suleyman Demirel University. All rights reserved.