TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14365/4
Browse
7 results
Search Results
Article Demir Yükü Artmış Karaciğerde İnce İğne Aspirasyon Sitolojisi (iias) ve Tru-cut Biyopsisi: Deneysel Bir Çalışma(2023-01-02) Adalı, Yasemen; Eroğlu, Hüseyin Avni; Makav, Mustafa; Karayol, Sunay Sibel; Fındık Güvendi, Gülname; Gök, Mustafa; Guvendi, Gulname FindikAmaç: İnce iğne aspirasyon sitolojisi (İİAS) tru-cut biyopsiye göre daha güvenli, basit, hızlı ve uygun maliyetlidir ve hasta uyumu genellikle daha iyidir. Birçok organda kullanılan İİAS’nin karaciğerdeki parankimal hastalıklarda kullanımına ilişkin fazla veri yoktur. Bu nedenle bu çalışmada İİAS’nin demir birikimini ve karaciğer hasarını göstermedeki faydası değerlendirilmiştir. Yöntem: Çalışmada 2 kontrol grubu yer aldı. Çalışma sonunda herhangi bir uygulama yapılmayan bu gruplardan İİAS ve tru-cut biyopsi örnekleri alındı. Yirmi sekiz gün süreyle intraperitoneal demir dekstran (88 mg/kg) verilerek demir yüklenmesi oluşturulduktan sonra çalışma gruplarına İİAS ve tru-cut biyopsi işlemleri de yapıldı. Preparatlarda hepatosit hasarı, enflamasyon ve demir birikimi histopatolojik olarak değerlendirildi. Hepatektomi materyaline göre her iki yöntemin duyarlılığı, özgüllüğü, pozitif ve negatif prediktifliği ve tanısal doğruluğu hesaplandı. Bulgular: Hepatosit hasarında; sensitivite (%60), tanısal doğruluk (%66,7) ve negatif öngörü (%50) tru-cut grubunda anlamlı olarak daha yüksek bulundu. Enflamasyonun değerlendirilmesinde yöntemlerin birbirine üstün olmadığı ve İİAS’nin demir birikiminde %83,3 duyarlılık ve tanısal doğrulukla tru-cut biyopsi oranlarına (%100) neredeyse yaklaştığı görüldü. Sonuç: Demire bağlı karaciğer hasarında altın standart doku incelemesi olmalı, bu nedenle tru-cut biyopsi ilk seçenek olmalıdır. Ancak mevcut çalışma sonuçlarına dayanarak tru-cut biyopsinin kullanılamadığı kanamaya yatkınlık, cerrahi erişimin mümkün olmaması, eşlik eden farklı hastalıkların varlığı ya da hasta oryantasyonu ve kooperasyonunun zayıf olduğu durumlarda İİAS’nin daha invaziv seçeneklere göre tercih edilebileceği önerilmektedir.Article Evaluation of Oxidative/Nitrosative Stress Parameters and Histopathological, Immunohistochemical Effects on Cisplatin-Induced Lung Toxicity in Rats(2023-12-01) Yıldız Dalgınlı, Kezban; Öztürkler, Melek; Beşeren, Hatice; Adalı, Yasemen; Atakişi, Onur; Dalgınlı, Kezban YıldızThe main focus of this study is to investigate oxidative/nitrosative stress and antioxidant effects and immunohistochemical effects in cisplatin-induced lung toxicity. In the study, 12 male Sprague Dawley rats, 2 months old, were divided into two groups: control (n=6) and cisplatin (n=6). Isotonic solution was administered to control and cisplatin 10 mg/kg single dose intraperitoneal to cisplatin group. Reducte glutathione (GSH), malondialdehyde (MDA) and nitric oxide (NO) levels were determined by spectrophotometricmethod in the lung tissues taken. Paraffin blocks were made from lung tissues and stained with hematoxylin-eosin (HE) staining. Immunohistochemically, p53, CD3, CD20, Bcl-2 ve Ki67 were evaluated. It was found that cisplatin administration alone had no effect on MDA and GSH values in the lung tissue of rats, and NO levels were significantly increased (P<0.005). In the histopathological evaluation of the lung tissue, congestion-bleeding findings, intense inflammation areas, lymphoid follicles around the bronchi and bronchioles were seen with HE staining. Concentric fibrous and fibrinous plugs consisting of blood-fibrin and inflammatory cells and fibroblasts in the airways were observed, with low- density edema between the alveoli. Reactive pan B cell markers CD20, T-cell marker CD3 in the interstitial component and desmin in sub-epithelial cells were stainedpositively by immunohistochemical staining, while reactive germinal centers Bcl-2 and p53 applied to the bronchioles and alveolarducts were immunohistochemically stained negative. In addition, low-intensity nuclear staining was found with Ki67 immunohistochemical staining.In conclusion, significant increase in NO level and immunohistochemically intense inflammation, lymphoid follicles, fibrous and fibrinous plugs are an expression of the onset of cisplatin-induced lung injury..Article Experimental Intravaginal and Intrauterine Endometritis Model: Which Model Is More Useful?(2022-12-31) Beşeren, Hatice; Makav, Mustafa; Kuru, Mushap; Adalı, Yasemen; Coşkun, Mustafa Reha; Eroğlu, Hüseyin AvniThis study aims to compare the newly created intravaginal endometritis model (IVM) with the intrauterine endometritis model (IUM). E. coli infusion was used as intravaginally for IVM and intrauterinally for IUM model. The animals were exeuted on the 7th day. Histopathological and biochemical analyses [malondialdehyde (MDA), glutathione (GSH), Endocan, Endoglin] were performed. A significant inflammation was determined in IVM and IUM compared to the control. A significant decrease in GSH and a significant increase in MDA and Endoglin were determined in IVM and IUM compared to the control. There was a statistically significant increase in the IUM and a numerical increase in the IVM compared to the control. Endometritis was determined by histopathological and biochemical analyses in both IUM and IVM model. It is suggested that intravaginal administration, which is easier to perform, can be used in experimental endometritis model studies.Article Pathological and Biochemical Investigation of the Effects of L-Carnitine and Gemfibrozil on Peroxisome Proliferator Activated Receptors (ppars) and Lipidosis in Rabbits on a High-Fat Diet(2022-12-31) Erkılıc, Ekin Emre; Çitil, Mehmet; Tunca, Recai; Uzlu, Erdogan; Karapehlivan, Mahmut; Adalı, Yasemen; Yapar, Kürşad; Eroğlu, Huseyin Avni; Makav, MustafaObesity and fatty liver is a worldwide health problem in human with detrimental consequences where many investigations are undertaken to overcome this problem. In this study, gemfibrozil and L-carnitine were evaluated in prevention of obesity and lipidosis. The study involved 56 New-Zealand Albino rabbits, divided into 8 equal groups (n=7). The groups were as follow; group I (normal diet), II (normal diet +gemfibrozil), III (normal diet+L-carnitine) and IV (normal diet+gemfibrozil+L- carnitine), V (high fat diet), VI (high fat diet+gemfibrozil), VII (high fat diet+L- carnitine) and VIII (high fat diet+gemfibrozil+L-carnitine). Animals were blood sampled and wieght weekly during the experiment and at the end of the experiment for determination of biochemical parameters (glucose, total lipid). All rabbits were euthanised for histopathological examination and for distrubition of peroxisome proliferator activated receptors (PPARs) in tissues by immunohystochemistry. Gemfibrozil and L-carnitin treatment in rabbits given high fat diet resulted in statistically significant decrease in total lipid when compared to those only received high fat diet. Beta oxidation of high fat diet group was significantly higher than that of groups additionally received gemfibrozil and L-carnitine. Immunohistochemistry revealed an increase in PPAR, PPAR-α and β but not PPAR-γ expression in high fat diet group. On the contrary, L-carnitin administration had no effect on tissue PPAR expression. PPAR-α expression differed between groups received gemfibrozil and high fat diet and those did not. The most marked macroscopy finding was abdominal fat increase in high fat diet group (group V). On the other hand gemfibrozil administration resulted in significant abdominal fat decrease. Furthermore decreased abdominal fat was marked in gemfibrozil and L-carnitine given animals (group VIII) when compared to other groups. In conclusion, gemfibrozil and L-carnitine administration alleviated abdominal and hepatic fattening. Gemfibrozil also caused a significant increase in PPAR-α expression in the liver. It may be of use in avoiding abdominal fat (obesity) due to high fat diet by use of gemfibrozil, a synthetic PPAR-a ligand, and L-carnitine.Article Investigation of Cyclin-D1 Immunohistochemical Expression in Bladder Urethelial Carcinoma(2023-06-27) Adalı, Yasemen; Ezer, Mehmet; Yılmaz Ertürk, Fatma; Beşeren, Hatice; Ertürk, Fatma YılmazObjective: Cyclin D1 is a protein that is involved in the regulation of the cell cycle and is encoded by the CCND1 gene. There are few studies on Cyclin D1 in the literature, and the results differ in the studies. In this study, the relationship between Cyclin D1 expression and prognostic factors in bladder urothelial carcinomas was investigated. Materials and Methods: Forty-six patients who underwent TUR-M at the Kafkas University Health Research and Application Hospital were included in the study. General information about the cases and pathology reports were obtained from the hospital automation system. Tumor-containing sections were selected from the Hematoxylin and Eosin stained pathology slides, and immunohistochemical staining was performed manually with Cyclin D1 primary antibody on the blocks of the selected slides. Immunostained pathology slides were evaluated under light microscope by scoring 0-4 separately as nuclear and cytoplasmic scores. Results: The age range of the cases was 51-93, and the mean age was 69.2±11.7. Twelve (26.1%) cases were female and 34 (73.9%) were male. It was observed that 29 (63.0%) of the cases were low- grade and 17 (37.0%) were high-grade. Eighteen (39.1%) of the cases were invasive and 28 (60.9%) were noninvasive. In the statistical analyzes, it was noted that invasive tumors had a significantly higher grade compared to non-invasive tumors (pTa) (p= 0.007). Similarly, the presence of lymphovascular invasion in invasive tumors was statistically <0.005 higher than that of in non- invasive tumors. (p=0.001). It was observed that nuclear cyclin D1 expression (p=0.003) was significantly higher in invasive cases. In addition, nuclear cyclinD1 expression was found to be statistically significantly higher in low-grade tumors (p=0.044). Conclusion: As a result of the study, a relationship between Cyclin D1 expression and tumor grade and invasion status was observed in patients with bladder urothelial carcinoma, but studies with larger case series are needed to use Cyclin D1 as a biomarker.Article White Matter Alterations in Amnestic Mild Cognitive Impairment: a Tract-Based Spatial Statistics Study(2023-01-27) Çavuşoğlu, Berrin; Ada, Emel; Emek Savaş, Derya Durusu; Yener, Görsev; Emek-savaş, Derya DurusuPurpose: To compare white matter (WM) structural alterations between the subjects with amnestic mild cognitive impairment (MCI) which is a transitional state to Alzheimer's Disease (AD) and healthy elderly controls. Methods: Diffusion tensor imaging (DTI) scans of 20 subjects with amnestic MCI and 20 healthy control groups who are matched by age, gender, and education with the MCI group between 2011 and 2016 were examined by in this retrospective study. WM structural integrity was analyzed using tract- based spatial statistics (TBSS) for voxel-based differences in fractional anisotropy (FA) between the two groups. Results: Fractional anisotropy was found significantly lower in the forceps minor, the body and genu of the corpus callosum, the right anterior thalamic radiation, the right cingulum, the right inferior fronto-occipital fasciculus, the right superior longitudinal fasciculus, and the right superior corona radiata in the MCI group than the control group. Conclusion: TBSS analysis is a promising method to examine structural WM integrity. These findings suggested that the DTI measurements may be useful for the detection of preclinical changes in AD.Article Citation - WoS: 3Citation - Scopus: 6Effects of Bevacizumab Administration on the Hypoxia- Induced Pulmonary Hypertension Rat Model(Tubitak Scientific & Technical Research Council Turkey, 2021-10-21) Demir, Canan; Karaman, Meral; Ucan, Eyup Sabri; Gokmen, Ali Necati; Gurel, Duygu; Coker, Sadiye Canan; Adali, Yasemen; Yilmaz, Osman; Gokmen, Necati; Coker, CananBackground/aim: Bevacizumab is a chemotherapeutic drug, which selectively binds to vascular endothelial growth factor (VEGF) and mainly inhibits angiogenesis and neovascularization. We aimed to study the possible effects of bevacizumab on right ventricular pressure (RVP), right ventricular hypertrophy, and VEGF, in hypoxia -induced pulmonary hypertension (PH) rat model. Materials and methods: 24 adult Wistar Albino rats were randomly divided into four groups: control group -saline; Bevacizumab Group; PH Group; PH + Bevacizumab Group. In hypoxia -induced model, 10% oxygen and 90% nitrogen were applied in a plexiglas box for eight days to PH Group and PH + Bevacizumab Group. On day eight, RVPs were measured directly from the heart, and then animals were sacrificed. Heart and lung tissues were examined, and Fulton index was measured. Results: RVP, Fulton index, and tissue VEGF scores were significantly lower in PH + Bevacizumab group than PH group: median (ranges), RVP, mmHg, 37.8 (33.0-39.0) and 32.3 (28.0-35.0), p: 0.01; Fulton index: 0.30 (0.29-0.33) and 0.25 (0.24-0.26), p: 0.003; tissue VEGF scores: 5.1 (4.8-5.3) and 4.0 (3.8 4.1), p: 0.004, respectively. Conclusion: Bevacizumab, which is indeed an antineoplastic agent, might have a favorable effect on hypoxia -induced pulmonary hypertension.