PubMed İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/11727/4810
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Item A novel mutation in TRMT5 associated with idiopathic non-cirrhotic portal hypertension and hepatopulmonary syndrome: Case report of two siblings(2022) Warasnhe, Khaled; Ozcay, Figen; Aydin, Halil Ibrahim; Ozgun, Gonca; Ceylaner, Serdar; https://orcid.org/0000-0002-0781-5814; 35460901Non-cirrhotic portal hypertension (NCPH) is a rare clinical entity in children. Familial clusters of idiopathic non-cirrhotic portal hypertension (INCPH) were previously reported in cases with deoxyguanosine kinase (DGOUK) and potassium calcium-activated channel subfamily N member 3 (KCNN3) mutations. Herein, we report two siblings who had a novel mutation in mitochondrial tRNA methyltransferase 5 (TRMT5) gene and presented with hepatopulmonary syndrome and later diagnosed as INCPH. Autosomal recessive inheritance of this mutation may suggest a role of TRMT5 mutations in the development of NCPH. Screening of TRMT5 mutations could be considered when familial INCPH is suspected. ?? 2022 Elsevier Masson SAS. All rights reserved.Item Use of Computed Tomography Volumetry to Assess Liver Weight in Patients With Cirrhosis During Evaluation Before Living-Donor Liver Transplant(2021) Haberal, Kemal Murat; Rahatli, Feride Kural; Turnaoglu, Hale; Ozgun, Gonca; Coskun, Mehmet; 0000-0002-8211-4065; 0000-0002-4226-4034; 0000-0002-0781-0036; 0000-0001-5630-022X; 30398100; R-9398-2019; AAL-9808-2021; AAK-8242-2021; AAM-4120-2021Objectives: Computed tomography liver volumetry has been widely used to detect total and segmental liver volume in living-donor liver transplantation. However, use of this technique to evaluate the cirrhotic liver remains unclear. In this study, we evaluated the accuracy of freehand computed tomography volumetry to assess total liver volume by comparing weights of total hepatectomy specimens in patients with cirrhosis. For our analyses, we considered the density of a cirrhotic liver to be 1.1 kg/L. Materials and Methods: Liver volume was measured using a freehand computed tomography technique in 52 patients with cirrhosis from different causes and who had no solid lesions before transplant. Measurements were made with a 16-slice multidetector computed tomography scanner (Siemens Somatom Sensation 16, Erlangen, Germany). For volumetric measurements, 10-mm-thick slices with 10-mm reconstruction intervals were preferred. Total hepatectomy weights of explant livers and computed tomography volumetry data were compared. Results: We excluded 3 cirrhotic patients with Budd-Chiari syndrome due to wide variations in scatterplot results. In the 49 patients included in the final analyses, average estimated liver volume by computed tomography was 721 +/- 398 mL and actual cirrhotic liver weight was 727.8 +/- 415 g. No significant differences were shown between these measurements. A simple regression analysis used to analyze correlations between estimated liver volume by computed tomography and real cirrhotic liver weight showed correlation of 0.957 (P < .001). When computed tomography liver volumetry as the independent variable and cirrhotic liver weight as dependent variable were considered, regression analyses showed R-2 = 0.915. Conclusions: Freehand computed tomography liver volumetry can be confidently used to evaluate liver volume in cirrhotic liver patients similar to use of this technique to estimate actual weights in normal livers. This technique can also be valuable during pretransplant and liver resection evaluations to ensure a more successful outcome.Item Effects of topical Coenzyme Q10, Xanthan Gum and Sodium Hyaluronate on corneal epithelial wound healing(2021) Asena, Leyla; Gokgoz, Gulsah; Helvacioglu, Fatma; Ozgun, Gonca; Deniz, Emine Ebru; Altinors, Dilek Dursun; 0000-0002-6848-203X; 0000-0002-4837-7937; 0000-0002-6026-0045; 34134604; E-5914-2016; AAY-7932-2021; AAH-8887-2021Background: The aim was to compare the effects of three different eye drops on corneal epithelial wound healing in an experimental model. Methods: Twenty-four eyes of 24 female BALB/c mice were included. A 2 mm central corneal epithelial defect was created. Topical Coenzyme Q10 + Vitamin E D-alpha-TPGS 4 x 1 was applied to Group A (n = 6), topical Sodium hyaluronate + Xanthan Gum + 0.3% Nethylmicine 4 x 1 to Group B (n = 6) and topical Sodium hyaluronate 4 x 1 to Group C (n = 6). Group D (n = 6) was the control group without treatment. Clinical scoring according to corneal fluorescein staining and histopathological evaluations was performed. Results: Clinical scores according to corneal fluorescein staining were similar in all groups on days 1 (p = 0.05), 2 (p = 0.15) and 3 (p = 0.62). Electron microscopy revealed disruption of intercellular junctions between corneal epithelial cells and intracellular vacuole formation in all groups except Group A. Corneal epithelial thickness and superficial epithelial microvillus arrangement were close to normal in Group A. Conclusion: Although there was no difference in clinical scores between groups, electron microscopy revealed a better organised epithelium with normal configuration of microvilli and less vacuolisation in Group A