11 results on '"Türedi S"'
Search Results
2. Biochemical and morphological evaluation of the effects of propolis on cisplatin induced kidney damage in rats.
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Yuluğ, E., Türedi, S., Yıldırım, Ö., Yenilmez, E., Aliyazıcıoğlu, Y., Demir, S., Özer-Yaman, S., and Menteşe, A.
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PROXIMAL kidney tubules , *OXIDANT status , *DRUG side effects , *BASAL lamina , *PROPOLIS , *KIDNEYS - Abstract
Cisplatin (CP) is a chemotherapeutic agent used to treat various types of cancer; nephrotoxicity is the most common adverse effect of the drug. We investigated the protective effects of propolis against CP induced kidney injury. Thirty-six male rats were divided into six equal groups: untreated control group, 50 mg/kg/day propolis group, 100 mg/kg/day propolis group, single-dose 7 mg/kg CP group, 7 mg/kg CP + 50 mg/kg/day propolis and 7 mg/kg CP + 100 mg/kg propolis. Rats were sacrificed after 14 days and kidneys were removed for histopathological and biochemical analyses. We used hematoxylin & eosin and periodic acid-Schiff staining to evaluate kidney histopathology and we used the TUNEL technique to assess apoptosis. We also measured total oxidant status (TOS), total antioxidant status (TAS), oxidative stress index (OSI), ischemia-modified albumin (IMA) and malondialdehyde (MDA) levels in tissue and blood specimens. Normal morphology was observed in the control, 50 mg/kg/day propolis and 100 mg/kg/day propolis groups by light microscopy. Degeneration of tubule cells, edema and tubule dilation were increased in the CP group compared to the control group. Degeneration of tubule cells and dilation of Bowman's spaces were decreased in the CP + 50 mg/kg/day propolis and CP + 100 mg/kg/day propolis groups compared to the CP group. Tubule dilation decreased significantly in the CP + 100 mg/kg propolis group compared to the CP group. Also, the 7 mg/kg CP group exhibited altered proximal tubule epithelial cells, loss of brush border and thickening of the parietal layer of Bowman's capsule in glomeruli and basal laminae of tubules. A normal brush border was observed in the CP + 50 mg/kg/day propolis and CP + 100 mg/kg/day groups. Serum OSI and MDA levels were increased in the CP group compared to the control group. Serum MDA levels decreased significantly in the CP + 50 mg/kg/day propolis and 100 mg/kg CP + propolis groups compared to the CP group. CP caused significant damage to kidney tissue; propolis exhibited dose-dependent prevention of tissue damage. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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3. The military expenditures and economic growth nexus: Panel bootstrap granger causality evidence from NATO countries
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Topal Mehmet Hanefi, Unver Mustafa, and Türedi Salih
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defense economics ,military expenditures ,economic growth ,asymmetric bootstrap granger causality ,Economic theory. Demography ,HB1-3840 - Abstract
The purpose of this study is to examine the causal linkage between military expenditures and economic growth in 27 North Atlantic Treaty Organization (NATO) member countries. Different periods are studied due to the unavailability of data for the common period for all countries. Both the symmetric and the asymmetric causality between military expenditures and economic growth are investigated under cross-sectional dependence and panel heterogeneity by using the bootstrap panel Granger causality testing approach. The results indicate that there is both symmetric and asymmetric Granger-causality between military expenditures and economic growth, which vary from one country to another. The robust empirical findings support the military expenditures and economic growth nexus in 12 of the 27 NATO member countries. Moreover, the findings show that more empirical evidence between military expenditures and economic growth can be obtained when the asymmetric causality is considered, in addition to the symmetric causality.
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- 2022
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4. Effects of prenatal exposure to a 900 MHz electromagnetic field on 60-day-old rat testis and epididymal sperm quality.
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Odacı, E, Hancı, H, Yuluğ, E, Türedi, S, Aliyazıcıoğlu, Y, Kaya, H, and Çolakoğlu, S
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SPERMATOZOA ,ELECTROMAGNETIC fields ,TESTIS physiology ,SEMEN analysis ,EPIDIDYMIS ,LABORATORY rats - Abstract
We investigated the effects of exposurein uteroto a 900 megahertz (MHz) electromagnetic field (EMF) on 60-day-old rat testis and epididymis. Pregnant rats were divided into control (CG; no treatment) and EMF (EMFG) groups. The EMFG was exposed to 900 MHz EMF for 1 h each day during days 13 − 21 of pregnancy. Newborn rats were either newborn CG (NCG) or newborn EMF groups (NEMFG). On postnatal day 60, a testis and epididymis were removed from each animal. Epididymal semen quality, and lipid and DNA oxidation levels, apoptotic index and histopathological damage to the testis were compared. We found a higher apoptotic index, greater DNA oxidation levels and lower sperm motility and vitality in the NEMFG compared to controls. Immature germ cells in the seminiferous tubule lumen, and altered seminiferous tubule epithelium and seminiferous tubule structure also were observed in hematoxylin and eosin stained sections of NEMFG testis. Nuclear changes that indicated apoptosis were identified in TUNEL stained sections and large numbers of apoptotic cells were observed in most of the seminiferous tubule epithelium in the NEMFG. Sixty-day-old rat testes exposed to 900 MHz EMF exhibited altered sperm quality and biochemical characteristics. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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5. Can prenatal exposure to a 900 MHz electromagnetic field affect the morphology of the spleen and thymus, and alter biomarkers of oxidative damage in 21-day-old male rats?
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Hancı, H, Türedi, S, Topal, Z, Mercantepe, T, Bozkurt, İ, Kaya, H, Ersöz, Ş, Ünal, B, and Odacı, E
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ELECTROMAGNETIC fields , *SPLEEN , *THYMUS , *BIOMARKERS , *OXIDATIVE stress , *ELECTRON microscopy - Abstract
We investigated the effects of a 900 Megahertz (MHz) electromagnetic field (EMF), applied during the prenatal period, on the spleen and thymus of 21-day-old male rat pups. Pregnant Sprague-Dawley rats were divided into control and EMF groups. We applied 900 MHz EMF for 1 h/day to the EMF group of pregnant rats. Newborn male rat pups were removed from their mothers and sacrificed on postnatal day 21. Spleen and thymus tissues were excised and examined. Compared to the control group, thymus tissue malondialdehyde levels were significantly higher in the group exposed to EMF, while glutathione levels were significantly decreased. Increased malondialdehyde and glutathione levels were observed in splenic tissue of rats exposed to EMF, while a significant decrease occurred in superoxide dismutase values compared to controls. Transmission electron microscopy showed pathological changes in cell morphology in the thymic and splenic tissues of newborn rats exposed to EMF. Exposure to 900 MHz EMF during the prenatal period can cause pathological and biochemical changes that may compromise the development of the male rat thymus and spleen. [ABSTRACT FROM AUTHOR]
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- 2015
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6. Pathological effects of prenatal exposure to a 900 MHz electromagnetic field on the 21-day-old male rat kidney.
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Odacı, E, Ünal, D, Mercantepe, T, Topal, Z, Hancı, H, Türedi, S, Erol, Hs, Mungan, S, Kaya, H, and Çolakoğlu, S
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PRENATAL exposure delayed effects ,ELECTROMAGNETIC fields ,LABORATORY rats ,CONTROL groups ,ELECTRON microscopy ,MALONDIALDEHYDE ,SUPEROXIDE dismutase - Abstract
We investigated the effects on kidney tissue of 900 megahertz (MHz) EMF applied during the prenatal period. Pregnant rats were exposed to 900 MHz EMF, 1 h/day, on days 13-21 of pregnancy; no procedure was performed on control group pregnant rats or on mothers or newborns after birth. On postnatal day 21, kidney tissues of male rat pups from both groups were examined by light and electron microscopy. Malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT) and glutathione levels also were investigated. Light microscopy revealed some degenerative changes in the tubule epithelium, small cystic formations in the primitive tubules and large cysts in the cortico-medullary or medullary regions in the experimental group. Electron microscopy revealed a loss of peritubular capillaries and atypical parietal layer epithelial cells in the experimental group. Biochemical analysis showed significantly increased MDA levels in the experimental group and decreased SOD and CAT levels. EMF applied during the prenatal period can caused pathological changes in kidney tissue in 21-day-old male rats owing to oxidative stress and decreased antioxidant enzyme levels. [ABSTRACT FROM AUTHOR]
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- 2015
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7. Investigation of relationship between the D-dimer and ischemia-modified albumin levels with the radiological imaging-based pulmonary embolism severity score in acute pulmonary embolism.
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Türedi S, Karahan SC, Mentese A, Gündüz A, Topbas M, Kosucu P, Oztuna F, Tatli O, Türedi, Süleyman, Karahan, Süleyman Caner, Menteşe, Ahmet, Gündüz, Abdülkadir, Topbaş, Murat, Koşucu, Polat, Oztuna, Funda, and Tatli, Ozgür
- Abstract
Objective: To investigate possible relationship between the D-dimer and ischemia-modified albumin (IMA) levels and radiological imaging-based severity scores in pulmonary embolism (PE) based on two different radiological characteristics; the pulmonary arterial obstruction index (PAOI) and the right ventricle/left ventricle (RV/LV) ratio.Methods: In this prospective cohort study, forty-seven patients presenting to the emergency department and definitively diagnosed with PE using spiral computerized tomography (CT) were initially enrolled in the study. Levels of IMA and D-dimer were assessed colorimetrical and immuno-turbidimetric methods, respectively. The PAOI and RV/LV ratios were calculated from CT images. The levels of biochemical parameters between the groups were compared with use of Mann-Whitney U and Kruskal-Wallis tests and relationship between the radiological scores were assessed using the Spearman correlation test.Results: Analysis of the calculated PAOI and RV/LV ratio revealed a significant correlation between them (r=0.36, p=0.023). D-dimer levels differed considerably among the mild (=40%), moderate (40%-60%) and severe (60%) groups constituted on the basis of PAOI (p=0.039). This difference stemmed from those in D-dimer levels in the mild group, PAOI =40 % and the severe group, PAOI 60% (p=0.02; Z= -2.328). In addition, D-dimer levels and PAOI revealed a positive correlation, but no similar correlation was determined between D-dimer levels and RV/LV. There were no significant correlations between IMA and D-dimer levels, PAOI and RV/LV ratios.Conclusion: In the biochemical determination of severity of PE based on radiological characteristics, D-dimer may be a more relevant marker than IMA, which has been proposed as a new marker. [ABSTRACT FROM AUTHOR]- Published
- 2010
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8. KTÜ FARABİ HASTANESİ ACİL SERVİSİNE ELEKTRİK YARALANMALARI İLE BAŞVURAN HASTALARIN DEĞERLENDİRİLMESİ.
- Author
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Türedi, S., Gündüz, A., Tatlı, Ö., Daşdibi, B., Kalkan, A., Hoş, G., and Topbaş, M.
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- 2007
9. Acute spontaneous spinal epidural hematoma associated with oral anticoagulant therapy: a case report.
- Author
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Türedi S, Gündüz A, Türkmen S, Patan T, and Kalkan A
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Bleeding is a common complication in patients receiving anticoagulant therapy, and is mostly seen in the gastrointestinal tract. Intraspinal hematoma is a unique and dangerous complication of anticoagulant therapy. In our case, a 70 year-old male patient who had been using oral anticoagulants was admitted to the Emergency Department with nausea, neck pain and motor weakness in the right upper and lower extremities. His clinical findings resembled cerebral illness. Spontaneous spinal epidural hematoma (SEDH) was diagnosed as a result of cervical and thorachal magnetic resonance imaging. The patient received conservative treatment for a specific period of time and was discharged without any sequela. In this case, we describe the diagnostic and therapeutic approach towards acute intraspinal hematoma occurring as a complication of anticoagulant therapy. [ABSTRACT FROM AUTHOR]
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- 2010
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10. Hydatid cyst disease of the lung as an unusual cause of massive hemoptysis: a case report
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Tekinbas Celal, Turedi Suleyman, Gunduz Abdulkadir, and Erol M Muharrem
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Medicine - Abstract
Abstract Introduction Echinococcosis and/or hydatidosis is one of the most important zoonotic diseases in the world. In Turkey, echinococcosis is an endemic disease, however, hydatid disease of the lung is uncommon and usually caused by Echinococcus granulosus. Case presentation In this report we describe a 17-year-old male patient who presented with massive hemoptysis due to hydatid disease of the lung. Conclusion Although it is one of the less common causes of massive hemoptysis, hydatid disease of the lung requires greater attention in countries, such as Turkey, in which hydatid cyst disease is common.
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- 2009
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11. The value of ischemia-modified albumin compared with d-dimer in the diagnosis of pulmonary embolism
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Ucar Utku, Eroglu Oguz, Turan Ibrahim, Yeniocak Selman, Karahan Suleyman C, Topbas Murat, Mentese Ahmet, Gunduz Abdulkadir, Turedi Suleyman, Karaca Yunus, Turkmen Suha, and Russell Robert M
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Diseases of the respiratory system ,RC705-779 - Abstract
Abstract Study objective The primary aim of this study was to investigate whether IMA levels are helpful in the diagnosis of pulmonary embolism (PE). The secondary aim was to determine whether IMA was more effective alone or in combination with clinical probability scores in the diagnosis of PE. Thirdly, the sensitivity and specificity of IMA is compared with D-dimer both with and without clinical probability scores in patients with suspected PE. Methods Consecutive patients presenting to the emergency department with suspected PE were prospectively recruited, and healthy volunteers were also enrolled as controls. D-dimer and IMA levels were measured for the entire study group. Wells and Geneva scores were calculated and s-CTPA was performed on all suspected PE patients. Results The study population consisted of 130 patients with suspected PE and 59 healthy controls. Mean IMA levels were 0.362 ± 0.11 ABSU for Group A, the PE group (n = 75); 0.265 ± 0.07 ABSU for Group B, the non-PE group (n = 55); and 0.175 ± 0.05 ABSU for Group C, the healthy control group (p < 0.0001). At a cut-off point of 0.25 ABSU, IMA was 93% sensitive and 75% specific in the diagnosis of PE. PPV was 79.4% and NPV was 78.6%. Mean D-dimer levels were 12.48 ± 10.88 μg/ml for Group A; 5.36 ± 7.80 μg/ml for Group B and 0.36 ± 0.16 μg/ml for Group C (p < 0.0001). The D-dimer cut-off point was 0.81 μg/ml with a sensitivity of 98.9% and a specificity of 62.7%, PPV of 69.4% and NPV of 83.3%. The use of IMA in combination with Wells and Geneva clinical probability scores was determined to have a positive impact on these scores' sensitivity and negative predictive values. Conclusion IMA is a good alternative to D-dimer in PE diagnosis in terms of both cost and efficiency. Used in combination with clinical probability scores, it has a similar positive effect on NPV and sensitivity to that of D-dimer. The PPV of IMA is better than D-dimer, but it is still unable to confirm a diagnosis of PE without additional investigation.
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- 2008
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