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    Chemical Composition of Nigella sativa L. Seeds Used as a Medical Aromatic Plant from East Anatolia Region, Turkey
    (ASIAN JOURNAL OF CHEMISTRY, 2013) Vatansev, Husamettin; Ciftci, Harun; Ozkaya, Ahmet; Ozturk, Bahadir; Evliyaoglu, Nurcan; Kiyici, Aysel
    In this study, chemical composition such as vitamins, fatty acids and trace elements of Nigella sativa L. seeds collected from East Anatolia Region of Turkey were investigated. Fatty acids in the lipid extracts were converted into methyl esters. The methyl esters were extracted with n-hexane, they were separated and quantified by gas chromatography. Fat soluble vitamins were determined by HPLC and the mixture of acetonitrile/methanol (3/1, v/v) was used as the mobile phase. For determination of trace elements levels, solutions from microwave digestion of a certain amount of seeds were analyzed with inductively coupled plasma optical emission spectrometry. Main fatty acids of Nigella sativa L. seeds were found as 66.5 and 23.5 (as relative % peak area) for linoleic acid (18: 2) and oleic acid (18: 1), respectively. The contents of Co, Ni, Fe, Zn, Cu, Mn and Cr were determined as 0.12, 1.48, 117.32, 41.42, 30.26, 28.56 and 2.55 mu g/g (dry matter) respectively. The levels of vitamins were found as 10.19 mu g/g for alpha-tocopherol, 2.28 mu g/g for delta-tocopherol, 0.18 mu g/g for retinol, 1.38 mu g/g for vitamin D-2 1.85 mu g/g for vitamin K-1 and 2.15 mu g/g for vitamin K-2. The Nigella sativa L. seeds were found to be rich in unsaturated fatty acids, vitamins and trace elements, suggesting that they may be valuable for apoptosis and would be appropriate to further studies in this direction.
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    DETERMINATION OF SERA NGAL LEVELS IN PATIENTS WITH LUNG CANCER AND ITS RELATION WITH APOPTOSIS
    (PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2018) Ozturk, Bahadir; Ciftci, Harun; Vatansev, Husamettin; Gun, Fatma Gul; Sunam, Guven Sami; Oncel, Murat; Karabagli, Pinar
    The NGAL synthesis induces in neoplasms; therefore, probably, it is benefited from the level of this protein for the determination of carcinogenesis and the progress stages of human tumors. In this study, it was aimed to investigate the expression of NGAL (neutrophil gelatinase associated lipocalin) in lung cancer patients and its relation with apoptosis. The study was conducted on the patients between the ages of 40 and 70 years accepted by the Thoracic Surgery Clinic (Selcuk University, Faculty of Medicine) based on their lung cancer diagnosis. The patients aged between 40 and 70 were included in the study from the thoracic surgery clinic of the Selcuk University as they were administered into the clinic based on their lung cancer diagnosis and had operation before. Patients who have acute stroke, rheumatic diseases, chronic kidney disease, congestive heart failure, chronic infection and other organ and system cancers (except lung cancer) were excluded from the study. Two groups including a lung cancer group (N=40) and a normal group (N=40) were formed to determine the NGAL and M30 levels in sera of patients using the ELISA method. According to the analysis results, the NGAL levels for the lung cancer group and the normal group were observed as 424.03 +/- 74.49 and 374.04 +/- 90.34 ng/mL, respectively. This increase in the lung cancer group was found statistically significant according to the normal group (p < 0.01). The M30 levels, marker for apoptosis in circulation, were obtained as 144.08 +/- 45.91 and 118.76 +/- 46.16 U/L for the lung cancer group and the normal group, respectively. This increase in the lung cancer group was found statistically significant according to the normal group (p < 0.01). A positive correlation was obtained between the NGAL and M30 data by means of Spearman's correlation test (r(40)=0.58, p < 0.01). The antigen levels of caspase 3, 8 and 9 were determined by the immunohistochemical staining methods in the samples of cancerous tissues and normal tissues adjacent to the cancerous tissue, and the apoptotic indexes were calculated. The apoptotic indexes of the cancerous tissues were significantly lower than the normal tissues (p < 0.01). This result demonstrates that the predominant type of cell death might be other cell death pathways rather than the apoptotic pathways in lung cancer. In addition, these results support the opinion about the fact that apoptosis may be inhibited by cancer cells in cancerous tissues. The significant increase in the M30 and NGAL levels supports the claims of the previous studies about the fact that it causes the consumption of cellular iron reserves and NGAL induced apoptosis in cancer patients.
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    DEVELOPMENT OF A NEW ENRICHMENT METHOD FOR SIMULTANEOUS DETERMINATION OF COPPER AND ZINC IN WATER SAMPLES
    (WILEY, 2011) Ciftci, Harun; Tunc, Turgay; Tasdemir, Ibrahim Hudai; Ciftci, Esen
    In the present study, an enrichment and separation method for the simultaneous determination of trace amounts of Cu and Zn in water samples was developed. Copper and Zn ions found in water matrix in trace amounts were preconcentrated on Duolite XAD 761 resin without using any chelating agent and determined by flame atomic absorption spectrometer (FAAS). Experimental parameters such as pH, concentration of metal ions, amount of resin, and sample volume for quantitative determination of Cu and Zn ions were optimized. The elution process was performed by using 5 ml of 2 mol/L HCl solution. The preconcentration factors for Cu and Zn were found to be 160 and 200, respectively. Under optimized conditions, limit of detection for Cu and Zn were 2.46 and 3.54 mu g/L, respectively. The Langmuir adsorption model was applied to describe the equilibrium isotherm. The Langmuir monolayer adsorption capacity of resin was estimated as 31.2 and 17.7 mg/g for Cu and Zn, respectively. The proposed method was successfully applied to determine the Cu and Zn content of various water samples. Environ. Toxicol. Chem. 2011;30:616-621. (C) 2010 SETAC