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Öğe Age, growth, reproduction and feeding of John Dory, Zeus faber (Pisces: Zeidae), in the Saros Bay (North Aegean Sea)(Wiley-Blackwell, 2013) Ismen, A.; Arslan, M.; Yigin, C. C.; Bozbay, N. A.The age, growth, reproduction, sexual maturity and stomach content of John Dory (Zeus faber), caught in the Bay of Saros (North Aegean Sea) between September 2006 and September 2008, were investigated. The female-male ratio was 1.6 : 1. The total length of females ranged from 13.8 cm to 52.8 cm, and of males from 12.2 cm to 42.9 cm. The length-weight relationship was W = 0.0174*L2.936. Age data derived from vertebral centra readings were used to estimate the growth parameters of the von Bertalanffy equation. Growth parameters for females were L8 = 58.50 cm K = 0.11 year-1, t0 = -0.99 year and for males L8 = 45.01 cm, K = 0.13 year-1, t0 = -1.17 year. Maximum age was 18 years for females and 17 years for males. Length at first maturity for both females and males was 25.4 cm. Monthly values of the gonadosomatic index indicated that spawning occurred mainly in two peaks: one between January and June, and the other from August to September. Stomach content analysis showed the most-preferred prey to be Pisces (IRI% 97.3).Öğe Crystal structure, spectroscopic (FT-IR, 1H and 13C NMR) characterization and density functional theory calculations on Ethyl 2-(dichloromethyl)-4-methyl-1-phenyl-6-thioxo-1,6-dihydropyrimidine-5-carboxylate(Elsevier, 2018) Pekparlak, A.; Tamer, O.; Kanmazalp, S. D.; Berber, N.; Arslan, M.; Avci, D.; Dege, N.A multicomponent reaction between ethyl 3-aminocrotonate, phenyl isothiocyanates, 2,2-dichloroacetyl chloride and to give 6-thioxo-1,6-dihydropyrimidine-5-carboxylate. This one-pot, three-component condensation took place under mild conditions in THF/CH3CN at 50 degrees C. The crystal structure of the synthesized molecule was elucidated by X-ray diffraction crystallography. The FT-IR, H-1 and C-13 NMR spectra for Ethyl 2-(dichloromethyl)-4-methyl-1-phenyl-6-thioxo-1,6-dihydropyrimidine-5-carboxylate have been experimentally recorded. The molecular geometry, vibrational frequencies and NMR chemical shifts for the title molecule have been calculated by using the B3LYP level of density functional theory method with 6-311++G(d,p) basis set. The obtained data demonstrated that DFT/B3LYP level can reproduce the experimental results. The computed vibrational frequencies provided a detailed assignment of molecular vibrations associated with each of the experimental bands observed. Additionally, nonlinear optical (NLO) properties and molecular electrostatic potential (MEP) have been evaluated by using B3LYP level in conjunction with 6-311++G(d,p) basis set. (C) 2018 Elsevier B.V. All rights reserved.Öğe Effect of dexmedetomidine on erythrocyte deformability during ischaemia-reperfusion injury of heart in diabetic rats(Comenius University, 2014) Arslan, M.; Comu, F.M; Kip, G.; Alkan, M.; Kiraz, H.A.; Ozer, A.; Sivgin, V.The aim of this study is to evaluate the effect of dexmedetomidine on erythrocyte deformability during IR heart injury in diabetic rats. Methods: Eighteen Wistar Albino rats were included in the study after streptozocin (55 mg/kg) treatment for four weeks. In the Group C and DC (sham-control group), the coronary artery was not occluded or reperfused in the control rats. In the Group DIR, a branch of the left coronary artery was occluded for 30 minutes followed by two hours of reperfusion to produce IR. In the Group DIRD, a branch of the left coronary artery was occluded for 30 minutes followed by two hours of reperfusion to produce IR, and dexmedetomidine was administrated via 100 ?g/kg 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 signifi cantly increased in diabetic rats; however, it was similar in the Group DC and DIRD. It was signifi cantly increased in the Group DIR when compared to the Group C, DIRD 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 dexmedetomidine might be useful in enhancing the adverse effects of this type of injury.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 Synthesis, crystal structure, spectroscopic (FT-IR, 1H and 13C NMR) and nonlinear optical properties of a novel potential HIV-1 protease inhibitor(Elsevier B.V., 2020) Pekparlak, A.; Tamer, Ö.; Kanmazalp, S.D.; Berber, N.; Arslan, M.; Avcı, D.; Dege, N.A multicomponent reaction between ethyl 3-aminocrotonate, amonium isothiocyanates and 2,2-dichloroacetyl chloride gives diethyl 6,6-disulfanediylbis(2-(dichloromethyl)-4-methylpyrimidine- 5-carboxylate) compound. X-ray diffraction method was used for structural characterization of the title compound. FT-IR, UV-Vis, 1H and 13C NMR spectra have been used to make spectroscopic characterization. Density functional theory (DFT) has been used to calculate the optimized geometry, IR, UV-Vis and NMR spectra, HOMO and LUMO energies as well as nonlinear optical (NLO) properties of the title molecule. Finally, molecular docking study was performed to evaluate the interaction mechanism of Diethyl 6,6?-disulfanediylbis(2-(dichloromethyl)-4-methylpyrimidine-5-carboxylate) to bind to the HIV-1 Protease 1HSG receptor. © 2020 Elsevier B.V.
