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Öğe Effect of curcumin on erythrocyte deformability in mice with limb ischemia-reperfusion injury(Turkish National Vascular and Endovascular Surgery Society, 2022) Arslan, Gökhan; Kartal, Hakan; Çomu, Faruk Metin; Çetin, Erdem; Sicim, Hüseyin; Demirdaş, Ertan; Günay, CelalettinObjectives: This study aims to examine the impact of curcumin on erythrocyte deformability in a mouse model that can be used for short-term ischemia/reperfusion (IR) injury. Materials and methods: A total of 30 mice were divided into five groups of six animals in each. The mice were subjected to unilateral hind limb ischemia on the femoral vessels for 2 h. Reperfusion was achieved for the next 2 h. Curcumin (100 mg·kg-1) was administered intraperitoneally (CUR and IR/CUR groups). The mice were euthanized by intraperitoneal administration of ketamine (100 mg·kg-1) and blood was drawn from the heart. A constant flow filter system was used to assess erythrocyte deformability. Results: There was a statistically significant difference in the mean deformability index among the groups. The IR group (2.1±0.3) significantly higher than the mean of control group (1.6±0.2), CUR group (1.6±0.1) and DMSO group (1.6±0.2). The deformability index values of the IR/CUR group approach the control group through the application of the curcumin (1.8±0.2). Conclusion: Our study showed negative effects of IR on erythrocyte deformability in mice. Also, curcumin had positive effects by reversing the undesirable effects of IR. © 2022 Turkish National Vascular and Endovascular Surgery Society. All rights reserved.Öğe Effect of Fullerenol C60 on Erythrocyte Deformability During Ischaemia-Reperfusion Injury of Lower Extremity in Diabetic Rats(Gazi Univ, Fac Med, 2019) Kip, Gülay; Kartal, Hakan; Çomu, Faruk Metin; Polat, Yücel; Arslan, Mustafa; Küçük, AyşegülBackground: Fullerenol, a water-soluble C60-fullerene derivative synthesized by Chiang et al, has been demonstrated to be able to scavenge free radicals in vitro and in vivo. Although its protective effects have been already studied and shown in ischemia reperfusion (IR) injury, additional investigation is necessary for its effect on erythrocyte deformability. The purpose of our study was to look into the effects of fullerenol C60 on erythrocyte deformability in rat lower extremity ischemia reperfusion injury model. Materials and Methods: After approval of the Ethics Committee, 30 Wistar Albino rat were divided into 5 groups (n:6) as; Control (C), Diabetes (group D), diabetes+ fullerenol C60 group (DF), diabetes+ IR (group DIR) and diabetes IR+ fullerenol C60 (DIRF). 55 mg/kg streptozotocin was administered to the rats for diabetes. After the period of 72 hour, blood glucose concentration was mesured, 250 mg/dl and above were considered as diabetic rat. Four week after the formation of diabetes, rats were subjected to 2 hour ischemia and 2 hour reperfusion. Erythrocyte packs were prepared from heparinized blood samples and deformability measurements were performed. Results: The deformability index was significantly increased in diabetic rats; however, it was similar in group D, DF and DIRF. It was significantly increased in group DIR when compared to group C, D, DF and DIRF. The relative resistance was increased in I/R models. Conclusion: This study aimed to investigate the effects of IR on erythrocyte deformability which may lead to disturbance in blood flow and hence tissue perfusion in infrarenal rat aorta. We found that fullerenol C60 had beneficial effects by reversing undesirable effects of IR. In our opinion, further studies with larger volume are required to support our promising results.Öğe Effect of Irisin on Erythrocyte Deformability in Mice with Lower Limb Ischemia Reperfusion Injury(Wiley, 2017) Polat, Yucel; Comu, Faruk Metin; Kucuk, Aysegul; Kartal, Hakan; Dursun, Ali Dogan; Arslan, Mustafa…Öğe Effects of N-Acetylcysteine and N-Acetylcysteine Amide on Erythrocyte Deformability and Oxidative Stress in a Rat Model of Lower Extremity Ischemia-Reperfusion Injury(HINDAWI LTD, 2020) Erol, Gokhan; Kartal, Hakan; Comu, Faruk M.; Cetin, Erdem; Demirdas, Ertan; Sicim, Huseyin; Unal, Celal S.N-acetylcysteine (NAC) is an antioxidant which works as a free radical scavenger and antiapoptotic agent. N-acetylcysteine-amide (NACA) is a modified form of NAC containing an amide group instead of a carboxyl group of NAC. Our study aims to investigate the effectiveness of these two substances on erythrocyte deformability and oxidative stress in muscle tissue.Materials and Methods. A total of 24 Wistar albino rats were used in our study. The animals were randomly divided into five groups as control (n: 6), ischemia (n: 6), NAC (n: 6), and NACA (n: 6). In the ischemia, NAC, and NACA groups, 120 min of ischemia and 120 min of reperfusion were achieved by placing nontraumatic vascular clamps across the abdominal aorta. The NAC and NACA groups were administered an injection 30 min before ischemia (100 mg/kg NAC; 100 mg/kg NACA; intravenous). Blood samples were taken from the animals at the end of the ischemic period. The lower extremity gastrocnemius muscle was isolated and stored at -80 degrees to assess the total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI) values and was analyzed.Results. The erythrocyte deformability index was found to be statistically significantly lower in rats treated with NAC and NACA before ischemia-reperfusion compared to the groups that received only ischemia-reperfusion. In addition, no statistically significant difference was found between the control group and the NAC and NACA groups. The groups receiving NAC and NACA before ischemia exhibited higher total antioxidative status and lower total oxidative status while the oxidative stress index was also lower.Conclusion. The results of our study demonstrated the protective effects of NAC and NACA on erythrocyte deformability and oxidative damage in skeletal muscle in lower extremity ischemia-reperfusion. NAC and NACA exhibited similar protective effects on oxidative damage and erythrocyte deformability.Öğe Evaluation of the effects of thymoquinone on red blood cell deformability, morphology, and endothelial nitric oxide synthase (eNOS) synthesis in rat lower extremity ischemia-reperfusion injury(Turkish Assoc Trauma Emergency Surgery, 2024) Gunay, Celalettin; Kartal, Hakan; Demirdas, Ertan; Oz, Bilgehan Savas; Comu, Faruk Metin; Erol, Gokhan; Arslan, GokhanBACKGROUND: Erythrocyte deformability refers to the ability of erythrocytes to bend and twist as they pass through capillaries, which is crucial for tissue perfusion. This study aims to investigate the effects of Thymoquinone treatment on erythrocyte deform- ability in rats subjected to lower extremity ischemia-reperfusion injury. METHODS: The study was conducted on Wistar albino rats weighing 400-450 g. The rats were randomly divided into five groups: the control group (C), in which no treatment was applied; the group that received dimethyl sulfoxide (DMSO) as a solvent; the group subjected to 90 minutes of ischemia followed by 90 minutes of reperfusion in the main femoral artery of the lower extremity (IR); the Thymoquinone control group (TQ-C), in which the effects of Thymoquinone alone were examined; and the group that received intraperitoneal Thymoquinone one hour before the ischemia-reper fusion procedure (IR+TQ). At the end of the procedure, intracardiac blood was collected from the rats, and May-Grunwald and Giemsa (MGG) staining, endothelial nitric oxide synthase (eNOS), and erythrocyte deformability indexes were measured. RESULTS: The study results showed significant differences. Erythrocyte deformability was statistically significantly improved in the group that received Thymoquinone before ischemia-reper fusion compared to the group subjected to ischemia-reper fusion only. Morphological changes in erythrocytes were also statistically significantly better in the IR+TQ group than in the IR group. Immunohistochemical eNOS staining revealed that eNOS activity in the IR group was lower than in the IR+TQ group. CONCLUSION: Our study demonstrates that Thymoquinone treatment administered before ischemia exerts protective effects against erythrocyte deformation and morphological deterioration by increasing eNOS activity.
