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Öğe Antioxidative effects of adrenomedullin and vascular endothelial growth factor on lung injury induced by skeletal muscle ischemia-reperfusion(Comenius Univ, 2013) Oktar, G. L.; Kirisci, M.; Dursun, A. D.; Zor, M. H.; Iriz, E.; Erer, D.; Arslan, M.Purpose: The aim of this study was to investigate the effects of adrenomedullin (AM) and vascular endothelial growth factor (VEGF) on lung injury as a remote organ following skeletal muscle ischemia-reperfusion injury in a rat model. Materials and methods: Thirty-six Wistar rats were randomized into six groups (n=6). Laparotomy was performed in all groups under general anesthesia. Nothing else was done in Group S (Sham). Ischemia reperfusion group (Group I/R) underwent ischemia and reperfusion performed by clamping and declamping of the infrarenal abdominal aorta for 120 minutes, respectively. Group VEGF and Group AM received intravenous infusion of VEGF (0.8 mu g/kg) or AM (12 mu g/kg) respectively, without ischemia and reperfusion. Group IR+VEGF and Group IR+AM received intravenous infusion of VEGF (0.8 mu g/kg) or AM (12 mu g/kg) respectively immediately after 2 hours period of ischemia. At the end of reperfusion period. Lung tissue samples were taken for biochemical examination. Total oxidant status (TOS) and total antioxidant status (TAS) levels in lung tissue were determined by using a novel automated method. p<0.05 was considered as statistically significant. Results: TOS levels were significantly higher in Group I/R, when compared with groups S, AM and VEGF (p=0.004, p=0.011, p=0.017, respectively) and significantly lower in groups I/R+AM and I/R+VEGF, when compared with Group I/R (p=0.018, p=0.006, respectively). TAS levels were significantly higher in Group I/R, when compared with groups S, AM and VEGF (p=0.006 p=0.016, p=0.016, respectively) and significantly lower in Group I/R+AM, when compared with Group I/R (p=0.016). Conclusion: These findings indicate that AM and VEGF acted effectively on the prevention of lung injury induced by skeletal muscle ischemia-reperfusion injury in a rat model (Fig. 2, Ref. 30). Full Text in PDF www.elis.sk.Öğe CA 72-4 levels in patients with type 2 diabetes mellitus(Wiley, 2010) Demirci, H.; Erdamar, H.; Karakoc, A.; Akturk, M.; Yilmaz, M.; Arslan, M.Objective: CA 72-4 is one of the blood group carbohydrate antigens which can be used as a tumour marker in ovarian, pancreatic and gastrointestinal carcinomas. It can also be elevated in various benign conditions including pancreatitis. Diabetes mellitus is a chronic disorder related with the pancreas. In this study, we investigated CA 72-4 levels in patients with type 2 diabetes and its relation to the metabolic status. Methods: Sixty-nine patients with type 2 diabetes mellitus (female/male = 40/29) and 60 healthy subjects (female/male = 35/25) participated in this study. The levels of serum CA 72-4 were measured and faecal occult blood tests (following 3 days of white diet were obtained for three consecutive days) were performed in all patients. Patients had a pathological finding for any of these two parameters were further investigated with upper gastrointestinal endoscopy, colonoscopy and computerised tomography. Results: The mean levels of CA 72-4 was 1.89 +/- 2.61 U/ml in the study group and 1.4 +/- 0.98 U/ml in the control group (p > 0.05). There was no association between CA 72-4 levels and age and sex of the patients, duration of diabetes, body mass index, biochemical indicators of metabolic control (the levels of HbA(1c), fasting and postprandial glucose, serum lipids), the presence of microvascular complications (retinopathy, nephropathy, neuropathy) or treatment modalities. Conclusions: Elevated levels of CA 72-4 in diabetic patients are not related to diabetes and it should be interpreted as evaluated in a non-diabetic patient.Öğe Calpain 10 gene single-nucleotide 44 polymorphism may have an influence on clinical and metabolic features in patients with polycystic ovary syndrome(Springer, 2009) Yilmaz, M.; Yurtcu, E.; Demirci, H.; Ergün, M. A.; Ersoy, R.; Karakoç, A.; Arslan, M.Aim: This study was designed in order to examine the relationship between Calpain 10 [single-nucleotide polymorphism (SNP) 19,43,44,63] gene polymorphisms and clinical and hormonal characteristics in women with polycystic ovary syndrome (PCOS). Materials and methods: One hundred and seven patients with PCOS and 114 healthy subjects were included in this study. Serum levels of sex steroids were measured for each individual. Insulin resistance (IR) was evaluated by the homeostasis model assessment (HOMA) and quantitative insulin-sensitivity check index (QUICKI) methods. Insulin and glucose responses to the oral glucose tolerance test (OGTT) were analyzed by calculating the areas under the curve for insulin (AUCI) and glucose by the trapezoidal methods. We used PCR and restriction fragment length polymorphism technique to examine Calpain 10 SNP 19, 43, 44, and 63 polymorphisms. Results: Allele distribution of Calpain 10 SNP 44 gene polymorphism was observed as significantly different between the groups. Calpain 10 SNP 44 TC genotype was found to be increased in PCOS subjects (69.15%) compared to the control subjects (50%). However, when compared to control subjects, patients with PCOS had similar Calpain 10 SNP 19, Calpain 10 SNP 43, and SNP 63 gene polymorphisms. When compared with normal Calpain 10 gene SNP 44 allele in PCOS subjects, subjects with PCOS having Calpain 10 gene SNP 44 allele polymorphism had higher free testosterone, androstenedione, DHEA-S, and fasting insulin levels. Also, PCOS women with Calpain 10 gene SNP 44 allele polymorphism had high Ferriman-Gallwey (F-G) score, acne, prevalence of menstrual disturbances, waist-hip ratio, HOMA-IR, AUCI levels and low QUICKI levels. Conclusion: The findings show that Calpain 10 gene SNP 44 allele polymorphism may have a role in PCOS pathogenesis. However, larger-scale studies are needed in this field.Öğe Does vitamin C prevent the effects of high dose dexmedetomidine on rat erythrocyte deformability?(Comenius Univ, 2012) Kurtipek, O.; Comu, F. M.; Ozturk, L.; Alkan, M.; Pampal, K.; Arslan, M.Purpose: Dexmedetomidine is an anesthetic agent frequently used for sedation at the intensive care units and during general anesthesia. The purpose of our study was to investigate whether vitamin C prevents the effect of high dose dexmedetomidine on erythrocyte deformability in rats. Methods: The study was performed on 21 male rats, with 7 rats in each study groups and the control group. The rats in the study groups were treated with intraperitoneal dexmedetomidine (10 mu g/kg) and intraperitoneal dexmedetomidine plus Vitamin C (ascorbic acid) (100 mg/kg ascorbic acid administered 1 hour before administration of 10 mu g/kg dexmedetomidine), respectively. Intraperitoneal physiological saline was administered in the control group. Erythrocyte packs were prepared using heparinized total blood samples. Deformability measurements were done by erythrocyte suspensions in phosphate buffered saline (PBS) buffer. A constant flow filtrometer system was used to measure erythrocyte deformability and the relative resistance was calculated. Results: Erythrocyte deformability was significantly higher in dexmedetomidine group than in control and vitamin C plus dexmedetomidine groups (p=0.003, p=0.013, respectively). Erythrocyte deformability indexes were found similar in the control group and in the vitamin C plus dexmedetomidine group (p=0.383) Conclusions: High dose dexmedetomidine may cause functional deterioration in blood flow and tissue perfusion with negative effects in erythrocyte deformability. Vitamin C supplementation seems to reverse those negative effects and variations in erythrocyte deformability. However, our preliminary results should be confirmed in wider serious of experimental and clinical trials (Fig. 1, Ref. 27). Full Text in PDF www.elis.sk.Öğe Effect of alprostadil on erythrocyte deformability in ischemia reperfusion injury(Comenius Univ, 2015) Kara, H.; Ozer, A.; Arpaci, H.; Demirtas, H.; Comu, F. M.; Oktar, G. L.; Arslan, M.BACKGROUND: Ischemia reperfusion injury (I/R) in lower extremity is a frequent and important clinical phenomenon. Protective effect of alprostadil on local and distant organ injury due to I/R has been well-documented but its effect on erythrocyte deformability needs further investigation. Our aim was to investigate the effect of alprostadil on erythrocyte deformability in infrarenal aorta of rats undergoing I/R. MATERIALS AND METHODS: Our study was conducted with 18 Wistar albino rats. Rats were divided into 3 groups; randomized control group (group C; n = 6), I/R group without alprostadil (group I/R; n = 6) and I/R group with alprostadil 20 mcg.kg(-1), intraperitoneal (group IR-A; n = 6). Packs of erythrocytes were prepared from heparinized blood samples and deformability measurements were done. RESULTS: Comparisons of the control and IR-A groups revealed similar results (p = 0.240). The values of the IR group were significantly higher than those of the control and IR-A groups (p = 0.009, p = 0.026, respectively). CONCLUSION: In our study, we detected unfavourable effects of I/R on erythrocyte deformability, which may lead to disturbance in blood flow and hence tissue perfusion in infrarenal rat aorta. We also found that alprostadil had beneficial effects by reversing undesirable effects of I/R (Fig. 1, Ref. 22). Text in PDF www.elis.sk.Öğe Effect of apelin-13 on erythrocyte deformability during ischaemia-reperfusion injury of heart in diabetic rats(Comenius Univ, 2017) Kartal, H.; Comu, F. M.; Kucuk, A.; Polat, Y.; Dursun, A. D.; Arslan, M.OBJECTIVES: Erythrocyte deformability and plasma viscosity are of crucial importance for the perfusion of tissues and organs. The aim of this study was to evaluate the effect of apelin-13 on erythrocyte deformability during IR heart injury in diabetic rats. METHODS: Eighteen Wistar Albino rats were included in the study after streptozotocin (55 mg/kg) treatment for four weeks of observation for diabetes existence. The animals were randomly assigned to one of five experimental groups. In the Group C, DC (sham-control group) and DCA (sham control group apelin-13), the coronary artery was not occluded or re-perfused. In the Group DIR, a branch of the left coronary artery was occluded for 30 minutes followed by 90 minutes of re-perfusion to produce IR. In the Group DIRA, a branch of the left coronary artery was occluded for 30 minutes followed by 90 minutes of re-perfusion to produce IR, and apelin-13 was administrated via 10 pg.kg(-1) IP route 30 minutes before ligating the left coronary artery. Deformability measurements were performed in erythrocyte suspensions containing Htc 5% in a PBS buffer. RESULTS: The deformability index was significantly increased in diabetic rats; however, it was similar in Group DC, DCA and DIRA. It was significantly increased in the Group DIR when compared to the Group C, DIRA, DCA and DC. The relative resistance was increased in IR models. CONCLUSION: Erythrocyte deformability was decreased in rats having diabetes and IR injury. This injury might lead to further problems in microcirculation. It was shown that apeline-13 may be useful in enhancing the adverse effects of this type of injury (Fig. 1, Ref. 35). Text in PDF www.elis.sk.Öğe Effect of cerium oxide on erythrocyte deformability in rat lower extremity ischemia reperfusion injury(Comenius Univ, 2018) Tatar, T.; Polat, Y.; Comu, F. M.; Kartal, H.; Arslan, M.; Kucuk, A.BACKGROUND: Cerium oxide is the oxide form of cerium, which has protective effects in ischemia reperfusion (I/R) injury. The purpose of our study was to look into the effects of this rare-earth metal on erythrocyte deformability in rat lower extremity I/R injury model. MATERIALS AND METHODS: We used 24 Wistar albino rats as subjects in our study. They were divided into 4 groups; randomized control group (group C; n = 6), cerium oxide group 0.5 mg.kg(-1), intraperitoneal (group CO; n = 6), I/R group (group I/R; n = 6) and I/R group with cerium oxide 0.5 mg.kg(-1) intraperitoneally (group I/R-CO; n = 6). Erythrocyte packs were prepared from heparinized blood samples and deformability measurements were performed. RESULTS: We obtained similar results from the control and I/R-CO groups (p = 0.158). The results in I/R group were evidently higher than those of the control, CO, and IR-CO groups (p < 0.0001, p < 0.0001, p = 0.001, respectively). CONCLUSION: We detected unfavorable effects of I/R on erythrocyte deformability, which may impair blood flow and hence tissue perfusion in infrarenal rat aorta. We also found that cerium oxide had beneficial effects by reversing undesirable effects of I/R. Further studies with larger volume are required to support our promising results (Fig. 1, Ref. 24). Text in PDF www.elis.sk.Öğe Effect of dexmedetomidine on erythrocyte deformability during ischemia-reperfusion injury of liver in diabetic rats(Comenius Univ, 2012) Arslan, M.; Comu, F. M.; Isik, B.; Ozturk, L.; Kesimci, E.Aim: The aim of this study is to evaluate the effect of dexmedetomidine on erythrocyte deformability during IR injury of liver in diabetic rats. Methods: Twenty-eight Wistar Albino rats were included in the study after a 4 week streptozocin (65 mg/kg) treatment to observe the existence of diabetes. The animals were randomly assigned to one of the four experimental groups: GroupC and DC (sham-control group): The abdomen was dissected with a median laparotomy and the liver was collected. GroupDIR: The liver was collected after IR following the abdominal median laparotomy. GroupDIRD: The liver was collected after IR following the abdominal median laparotomy and 30 min of infusion of dexmedetomidine 100 mu g/kg ip The deformability measurements were performed in erythrocyte suspensions containing Htc 5% in PBS buffer. Results: The deformability index was significantly increased in diabetic rats, however it was similar in the GroupC and DIRD. It was significantly increased in the GroupDIR when compared to the GroupC, DIRD and DC. The relative resistance was increased in IR models. Conclusion: Erythrocyte deformability was damaged in rats having diabetes and IR injury. This injury might lead to further problems in microcirculation. It was shown that dexmedetomidine may be useful in enhancing the adverse effects of this injury (Tab. 1, Fig. 2, Ref. 41). Full Text in PDF www.elis.sk.Öğe Effect of iloprost on erythrocyte deformability in rat's lower extremity undergoing an ischemia reperfusion injury(Comenius Univ, 2013) Arslan, M.; Donmez, T.; Erer, D.; Tatar, T.; Comu, F. M.; Alkan, M.Aim: Ischemia reperfusion injury (I/R) in lower extremity is a frequent and important clinical phenomenon. The protective effect of iloprost on local and distant organ injury due to I/R has been well documented but its effect on erythrocyte deformability needs further investigation. Our aim was to investigate the effect of iloprost on erythrocyte deformability in the infrarenal aorta of rats undergoing I/R. Materials and methods: Our study was conducted with 18 Wistar albino rats. Rats were divided into the 3 groups; the randomized control group (group C; n=6), I/R group without iloprost (group I/R; n=6) and I/R group with iloprost 10 mcg.kg(-1), 30 min infusion (group I/R-I; n=6). Packs of erythrocytes were prepared from heparinized blood samples and deformability measurements were done. Results: The comparisons of the control and I/R-I groups revealed similar results (p=0.951). The values of the IR group were significantly higher than those of the control and IR-I groups (p=0.006, p=0.011, respectively). Conclusion: In our study, we detected the unfavourable effects of I/R on erythrocyte deformability, which may lead to disturbance in blood flow and hence tissue perfusion in the infrarenal rat aorta. We also found that Iloprost had beneficial effects by reversing the undesirable effects of I/R (Fig. 1, Ref. 15). Full Text in PDF www.elis.sk.Öğe Effect of levosimendan on erythrocyte deformability during myocardial ischaemia-reperfusion injury(Comenius Univ, 2015) Arslan, M.; Comu, F. M.; Alkan, M.; Kiraz, H. A.; Kip, G.; Ozer, A.; Sivgin, VDiabetes mellitus (DM) is a chronic metabolic disorder accompanied by an increase in oxidative stress. Ischaemia-reperfusion (IR) injury is a cascade of events initiated by tissue ischaemia. The cellular damage produced by reperfusion leads to an active inflammatory response. Erythrocyte deformability and plasma viscosity are of crucial importance for the perfusion of tissues and organs. The aim of this study was to evaluate the effect of levosimendan on erythrocyte deformability during IR myocardial injury in diabetic rats. Methods: Twenty-four Wistar albino rats were included in the study after streptozocin (55 mg/kg) treatment for 4 weeks to observe the existence of diabetes. The animals were randomly assigned to one of four experimental groups. In Group C and DC (sham-control group), the coronary artery was not occluded or reperfused in the control rats. Myocardial IR was induced by ligation of the left anterior descending coronary artery for 30 min, followed by 2 h of reperfusion in the diabetes-IR (DIR) and diabetes-IR-levosimendan (DIRL) group. Deformability measurements were performed in erythrocyte suspensions containing Htc 5 % in a phosphate-buffered saline (PBS) buffer. Results: The deformability index was significantly increased in the diabetic rats. It was similar in Group DC and DIRL It was significantly increased in the DIR group compared to Group C, DIRL and DC. The relative resistance was increased in the IR models. Conclusion: Erythrocyte deformability was decreased in rats with diabetes and IR injury. This injury might lead to further problems in microcirculation. Levosimendan may be useful in enhancing the adverse effects of this type of injury (Fig. 2, Ref. 41). Text in PDF www.elis.sk.Öğe Effects of fullerenol nanoparticles on kidney tissue in sevoflurane-treated rats(Comenius Univ, 2020) Sivgin, V; Yalcin, G.; Kucuk, A.; Sezen, S. C.; Afandiyeva, N.; Arslan, M.AIM: The aim of this study is to demonstrate whether fullerenol C60 protects renal injury in sevoflurane-administered rats. METHOD: Rats (n: 24) were randomly divided into four groups: Control (Group C), Fullerenol C60 (Group F), Sevoflurane (Group S), Fullerenol C60-Sevoflurane (Group FS). Thirty minutes before the procedure, Fullerenol C60, 100 mg/kg, was administered intraperitoneally. Sevoflurane (2.3 %) was applied for 3 hours to rats in S and FS groups. Biochemical and histopathological parameters were analyzed in renal tissue samples. Kruskal-Wallis and Mann-Whitney U tests were used in statistical analyzes. RESULTS: Malondialdehyde (MDA) level and catalase (CAT) enzyme activity in Group S were significantly higher than that in all other groups. Paraoxanase (PON) enzyme activity in Group S was significantly lower than in Groups C and FS. The histopathological examination showed that vascular vacuolization and hypertrophy (VVH) and lymphocyte infiltration (LI) were significantly higher in the Group S compared to the Group C. CONCLUSION: Renal histopathology revealed that the administration of Fullerenol C60 prior to sevoflurane inhalation reduced oxidative stress and partially corrected the damage caused by anesthesia. We concluded that Fullerenol C60 has a renal protective effect in rats when administered before sevoflurane anesthesia.Öğe The effects of HES 130 / 0,4 application on erythrocyte deformability in ureteral obstructed rats(Wiley, 2017) Kalayci, D.; Kucuk, A.; Sen, O.; Comu, F. M.; Arslan, M.; Unal, Y.…Öğe The effects of iloprost on lung injury induced by skeletal muscle ischemia-reperfusion(Comenius Univ, 2014) Erer, D.; Dursun, A. D.; Oktar, G. L.; Iriz, E.; Zor, M. H.; Elmas, C.; Arslan, M.Purpose: The aim of this study was to investigate the effects of iloprost (I) on lung injury as a remote organ following skeletal muscle ischemia-reperfusion injury in a rat model. Materials and methods: Twenty-four Wistar Albino rats were randomized into four groups (n = 6). Laparotomy was performed in all groups under general anesthesia. Only laparotomy was applied in Group S (Sham). Ischemia reperfusion group (Group I/R) underwent ischemia and reperfusion performed by clamping and declamping of the infrarenal abdominal aorta for 120 minutes. Group iloprost (Group 1) received intravenous infusion of iloprost 0.5 ng/kg/min, without ischemia and reperfusion. Group I/R/I received intravenous infusion of iloprost 0.5 ng/kg/min immediately after 2 hours of ischemia. At the end of the study, lung tissue was obtained for determining total oxidant status (TOS) and total antioxidant status (TAS) levels, histochemical and immunohistochemical determination. Results: Diffuse lymphocyte infiltration was detected in immunohistochemical examination of lung tissue in Group I/R. The connective tissue around bronchi, bronchioles and vessel walls was found to be increased. Although minimal local lymphocyte infiltration was detected in some fields in Group I/R/I, the overall tissue was found to be similar to Group S. iNOS expression was significantly higher in Group I/R, when compared with Group S and significantly lower in Group I/R/I compared to Group I/R. TOS levels were significantly higher in Group I/R, when compared with groups S and I (p = 0.028, p = 0.016, respectively) and significantly lower in group I/R/I, when compared with Group I/R (p = 0.048). TAS levels were significantly higher in Group I/R, when compared with groups S, I (p = 0.014, p = 0.027, respectively) and significantly lower in Group I/R/I, when compared with Group I/R (p = 0.032). Conclusion: These results indicate that administration of iloprost may have protective effects against ischemia reperfusion injury (Fig. 8, Tab. 1, Ref. 30). Text in PDF www.elis.sk.Öğe The effects of lornoksikam and intravenous iboprofen in lower extremity ischemia reperfusion injury(Wiley-Blackwell, 2016) Kucuk, A.; Aydin, M. E.; Koc, D. S.; Sivgin, V.; Arslan, M.; Comu, F. M.…Öğe The effects of low-high doses of dexmedetomidine on erythrocyte deformability in rats(Comenius Univ, 2012) Ozturk, L.; Arslan, M.; Comu, F. M.Background: Dexmedetomidine is an anesthetic agent frequently used for sedation, intensive care units, and general anesthesia. The purpose of our study was to investigate the effect of two different doses of dexmedetomidine on erythrocyte deformability in rats. Materials and methods: The study was performed on 21 male rats, with 7 rats in each study group and the control group. The rats in the study groups were administered dexmedetomidine (low dose 5 mu g.kg(-1), high dose 10 mu g.kg(-1)) intraperitoneally, and the rats in the control group were administered physiological saline. Erythrocyte packs were prepared using heparinized total blood samples. Deformability measurements were done by erythrocyte suspensions in phosphate buffered saline (PBS) buffer. A constant flow filtrometer system was used to measure erythrocyte deformability, and the relative resistance was calculated. Results: Use of a high dose dexmedetomidine resulted in an increase in relative resistance, which is an indicator for erythrocyte deformability in control rats (p=0.014). Conclusions: High dose dexmedetomidine via negative change in erythrocyte deformability may cause a functional deterioration in blood flow and tissue perfusion. Our results showed that low dose dexmedetomidine protects erythrocyte deformability better than the high dose (Fig. 1, Ref. 23). Full Text in PDF www.elis.sk.Öğe The effects of propofol and memantine on erythrocyte deformability(Comenius Univ, 2014) Unal, Y.; Comu, F. M.; Emik, U.; Alkan, M.; Pampal, H. K.; Arslan, M.Objective: Propofol is an intravenous general anesthetic with a primary hypnotic effect. Memantine is an NMDA receptor antagonist that has been shown to reverse changes in memory and synaptic plasticity in animal models. This study aims to investigates whether propofol and/or memantine has any effects on erythrocyte deformability. Methods: 24 Wistar albino rats were divided randomly into four groups. Group P received 150 mg.kg(-1) propofol intraperitoneally (ip); Group M received 1 mg.kg(-1) memantine (ip); Group PM received 1 mg.kg(-1) memantine mg.kg(-1) ip 30 minutes before the administration of 150 mg.kg(-1) propofol; and the control group (Group C) received saline ip. Euthanasia was performed in all rats by using intraabdominal blood uptake. The heparinized whole blood samples were used to prepare erythrocyte suspensions, from which erythrocyte suspensions were formed with a PBS buffer solution containing 5 % htc, and the deformability parameters were measured. Results: Erythrocyte deformability was significantly higher in Groups P, M and PM when compared to the Group C(p = 0.007 and p = 0.001, p<0.0001, respectively); while the erythrocyte deformability indices were similar in groups P, M and PM. Conclusion: The administration of propofol and memantine altered the erythrocyte deformability in the rats, which may lead to further problems in microcirculation. The administration of memantine to the propofol-treated rats did not alter the erythrocyte deformability; however the early results should be verified through further experimental and clinical studies (Fig. 1, Ref. 23). Text in PDF www.elis.sk.Öğe The effects of rosiglitazone on insulin resistance and oxidative stress in non-obese patients with polycystic ovary syndrome(Elsevier Science Bv, 2005) Bukan, N.; Yilmaz, M.; Ayvaz, G.; Karakoç, A.; Toruner, F.; Çakir, N.; Arslan, M.…Öğe Evaluation of effects of hyperthermic intraperitoneal chemotherapy treatment on erythrocyte deformability(Wiley, 2017) Kalayci, D.; Kucuk, A.; Sen, O.; Comu, F. M.; Arslan, M.; Unal, Y.…Öğe Investigation of the effects of propofol and vitamin C administration on erythrocyte deformability in rats with streptozotocin-induced diabetes mellitus(Comenius Univ, 2014) Comu, F. M.; Ozturk, L.; Alkan, M.; Pampal, K.; Arslan, M.; Isik, B.; Yilmaz, D.Purpose: In the current study we aim to investigate the effects of vitamin C and profol on red blood cell deformability in diabetic rats Materials and methods: Twenty- eight Wistar Albino rats were included in the study after streptozocin (60 mg/kg) treatment for 4 weeks of observation for diabetes presence. Twenty-eight rats were allocated to 4 groups. In group DP (n = 7) 150 mg.kg(-1) of propofol was injected intraperitoneally. In group DP-vit C (n = 7) rats 100 mg/kg of vitamin C (Ascorbic acid, Redoxon (R) 1000 mg/5 mL - Roche) were applied one hour before administrating 150 mg.kg(-1) of propofol, while rats in control group (n = 7), and diabetic control group (n = 7) received intraperitoneally physiological saline. Deformability measurements were achieved by using erythrocyte suspensions with hematocrit level of 5 % in PBS buffer. Results: Erythrocyte deformability was significantly higher in diabetic control group than in control and vitamin C plus propofol groups (p = 0.00, p = 0.025, respectively). Erythrocyte deformability indexes were found similar in control group and vitamin C plus propofol group (p = 0.949). Relative resistance was increased in diabetic rat model. Conclusions: Erythrocyte deformability was damaged in rats with diabetes. This injury might lead to further problems in microcirculation. Application of propofol did not alter red cell deformability in diabetic rats. Vitamin C supplementation seems to reverse those negative effects and variations in erythrocyte deformability (Fig. 2, Ref. 57). Text in PDF www.elis.sk.Öğe Investigation of the effects of thymoquinone on erythrocyte deformability in sepsis treatment which created by cecal perforation in rat(Comenius Univ, 2018) Bostanci, H.; Dikmen, K.; Comu, F. M.; Arslan, M.; Kucuk, A.AIM: We aimed to study the effects of thymoquinone on erythrocyte deformability in an experimental model of sepsis given before or after the initiation of the sepsis model. METHOD: The animals were grouped as (n = 6) control, nigella sativa, sepsis, sepsis group with administration of nigella sativa before sepsis development and sepsis group with nigella sativa administration after sepsis development. Cecal ligation and puncture model (CLP) was used to induce sepsis in the animals. The thymoquinone was given 1 hour before or after the CLP in the study groups with a dose of 500 mg.kg(-1). Erythrocyte deformability and relative resistance was calculated. RESULT: Relative resistance was increased in the sepsis groups when compared to the control group (p < 0.0001). Deformability index was increased in the sepsis group when compared to the other groups (p < 0.0001 in all groups). Sepsis group with after nigella sativa groups deformability index was significantly different from the deformability index in control group (p = 0.002). The use of nigella sativa before the initiation of sepsis corrected the deformability index significantly and the results were comparable to the control group (p = 0.078). CONCLUSION: Thymoquinone administration before induction of CLP was observed to have protective effects on these alterations in CLP sepsis (Tab. 1, Fig. 1, Ref. 26). Text in PDF www.elis.sk.
