Feride İffet Şahin

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Cytogenetic heteromorphisms are described as heritable variations at specific chromosomal regions without a proven impact on phenotype. We compared the presence of chromosome heteromorphisms in the karyotypes of two patient groups. The first group of patients consisted of 276 individuals of 138 infertile couples. The second group, consisted of 1,130(More)
BACKGROUND Lung cancer is the most frequent cause of death in both men and women. Smoking is the greatest risk factor for lung cancer and the relation of human papillomavirus (HPV) infection with lung cancer has been reported. HPV can be detected in small cell lung cancer samples with the methods like in situ hybridization, polymerase chain reaction (PCR),(More)
BACKGROUND AIMS Mesenchymal stromal cells (MSC) exhibit non-specific hematopoietic cell and/or stromal cell markers (e.g. CD73, CD105 and CD166) that have been used to identify MSC by flow cytometry. Because a neural glial antigen, NG2 (a progenitor cell marker in the central nervous system), is expressed by several tissue cells originating in the(More)
Adequate copper (Cu2+) concentrations are required for plants; however, at higher concentrations it can also cause multiple toxic effects. In the present study, lipid peroxidation, hydrogen peroxide levels as well as ascorbate peroxidase (APX: EC 1/11/1/11) and catalase (CAT: EC 1.11.1.6) activities were determined in Lycopersicum esculentum Mill. and(More)
BACKGROUND Cytogenetic, molecular and epigenetic changes are all known to take place in the pathogenesis of meningiomas. In this study, we aimed at investing methylation of MGMT (DNA repair), CDKN2A (cell cycle control), GSTP1 (detoxification), and THBS1 (angiogenesis inhibitor) genes, which are known to be unmethylated in normal tissue, in meningioma(More)
OBJECTIVE To investigate the association between nasal polyposis (NP) and single nucleotide polymorphisms of the proinflammatory cytokines IL (interleukin) 1alpha (the IL1A gene), IL-1beta (the IL1B gene), and tumor necrosis factor alpha (the TNFA gene). DESIGN Prospective case-control trial. SETTING Tertiary referral center. PATIENTS Eighty-two(More)
BACKGROUND Some polymorphisms at the human vitamin D receptor (VDR) gene locus may influence calcium and bone metabolism. We investigated the roles of the BsmI and TaqI VDR gene polymorphisms in the development of hypercalcemia in Turkish peritoneal dialysis (PD) patients. METHODS We enrolled 132 PD patients treated with dialysate containing 1.75 mmol/L(More)
Familial Mediterranean fever (FMF) is characterized by recurrent fever, serositis, and arthritis. Due to the abundance of mutations and clinical heterogeneity of the disease, different screening methods have been developed. In this study, we aimed to compare our findings of mutations determined by polymerase chain reaction-restriction fragment length(More)
Amplification and/or overexpression of HER-2/neu has been reported to be associated with poor prognosis in breast cancer. One single-nucleotide polymorphism at codon 655 indicates a guanine-to-adenine substitution (Ile655Val) in the transmembrane domain-coding region of the HER-2/neu gene reported to be associated with increased risk of breast cancer.(More)