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    Relationship between cyclin D1 (A870G) gene polymorphism and lung cancer
    (Natl Inst Science Communication-Niscair, 2013) Cakina, Suat; Gulyasar, Tevfik; Ozen, Alaattin; Sipahi, Tammam; Kocak, Zafer; Sener, Seralp
    The roles of many genes in the pathophysiology of lung cancer have been investigated in different studies. Cyclin D1 (CCND1) gene plays a significant role in the transition from G1 to S phase of the cell cycle and in the phosphorylation of retinoblastoma tumor suppressor protein. In this study, we aimed to identify the relationship between CCND1 A870G gene polymorphism with lung cancer. CCND1 A870G genotypes were determined in 75 patients with lung cancer and in 65 control subjects. DNA was isolated from blood samples and then CCND1 A870G gene polymorphism was identified using PCR and RFLP assay. The distribution of CCND1 A870G polymorphism did not show any significant differences in all lung cancer patients and controls. There was no correlation between CCND1 A870G polymorphism and histopathological findings. However, the AA + AG genotype was significantly higher in metastatic patients, when compared with non-metastatic patients. Thus, the results show that CCND1 gene polymorphism may be a predictor for detecting patients with poor survival who having metastatic disease.
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    Trace Elements in a Rat Model of Cadmium Toxicity: the Effects of Taurine, Melatonin and N-Acetylcysteine
    (Aves Yayincilik, Ibrahim Kara, 2010) Gulyasar, Tevfik; Aydogdu, Nurettin; Cakina, Suat; Sipahi, Tammam; Kaymak, Kadir; Sener, Seralp
    Objectives: This study was undertaken to investigate copper, zinc, iron, and selenium in a rat model of cadmium toxicity and effects of antioxidant substances such as taurine, melatonin and N-acetylcysteine. Materials and Methods: Ninety male Sprague Dawley rats were divided into nine groups. Group 1 received tap water comprising the controls; the remaining eight groups received 200 mu g/ml cadmium chloride (CdCl2) for three months. Group 2 had CdCl2. Groups 3, 4, and 5 were administered taurine, melatonin and N-acetylcystein for three months together with CdCl2. Groups 6, 7, 8, and 9 had CdCl2 for three months and then only water as the second control or antioxidants for seven days. Cadmium, copper, zinc, iron, and selenium levels of heart and brain were measured by atomic absorption spectrophotometer. Results: Cadmium accumulated in significant amounts in brain and heart tissues when compared with controls. CdCl2 levels in Group 1 and Group 2 were 2.56+/-0.77 and 27.2+/-5.82 in the heart, 46.16+/-14.81 and 300.34+/-58.19 in the brain, respectively (p<0.001). We found that melatonin was more effective in brain tissue (p<0.05) whereas N-acetylcysteine was more effective in heart tissue (p<0.001) against cadmium accumulation. Conclusion: We suggest that taurine, melatonin and N-acetylcysteine have some protective effects in brain and heart tissues against cadmium accumulation. Furthermore, trace element levels were restorated in different degrees after taurine, melatonin and N-acetylcysteine administration.