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| 1 | Pegylated interferon-alpha plus taurine in treatment of rat liver fibrosis显示文摘AIM: To investigate the antif ibrotic effects of peginterferon- alpha 2b and taurine on oxidative stress markers and hepatocellular apoptosis. METHODS: Sixty rats with CCl4-induced liver fibrosis were divided into 4 groups (n = 15). Group 1 was left for spontaneous recovery (SR). Groups 2-4 received peginterferon-alpha 2b, taurine, and their combination, respectively, for four weeks. Histological f ibrosis scores, histomorphometric analysis, tissue hydroxyproline, tissue MDA, GPx and SOD activities were determined. Activated stellate cells and hepatocellular apoptosis were also evaluated. RESULTS: The degree of f ibrosis decreased in all treatment groups compared to spontaneous recovery group. Taurine alone and in combination with peginterferon-alpha 2b reduced oxidative stress markers, but peginterferon-alpha 2b alone did not. Apoptotic hepatocytes and activated stellate cells were higher in groups 2-4 than in group 1. Combined taurine and peginterferon-alpha 2b further reduced fibrosis and increased activated stellate cell apoptosis, but could not improve oxidative stress more than taurine alone.CONCLUSION: Peginterferon-alpha 2b exerts anti- f ibrotic effects on rat liver fibrosis. It seems ineffective against oxidative stress in vivo. Peginterferon-alpha 2b in combination with taurine seems to be an antif ibrotic strategy. | Ilker Tasci Mehmet Refik Mas Sevil Atalay Vural Salih Deveci Bilgin Comert Gunay Alcigir Nuket Mas Cemal Akay Mithat Bozdayi Cihan Yurdaydin Hakan Bozkaya Ozden Uzunalimoglu Ahmet Turan Isik Harun M Said | 2007 | World Journal of Gastroenterology2007,13,23: | 7 |
| 2 | Subfoveal choroidal thickness changes after intravitreal bevacizumab therapy for neovascular age-related macular degeneration显示文摘Dear Sir,Iam Dr.Cihanünlü,from the Department of Opthalmology,ümraniye Training and Research Hospital,Istanbul,Turkey.I write to present our study findings on subfoveal choroidal thickness(SFCT)changes after intravitreal bevacizumab(IVB)therapy for neovascular age-related macular degeneration(AMD).AMD is the leading cause of severe visual loss in adults older than 60y[1].Visual loss in late stages of AMD may be the result of one of the two processes:geographic atrophy(GA)or choroidal neovascularization(CNV).Many types | Cihan ünlü Gurkan Erdogan Betul Onal Gunay Betul Ilkay Sezgin Akcay Esra Kardes | 2015 | International Journal of Ophthalmology(English edition)2015,8,4: | 3 |
| 3 | Advances in quantitative analysis of astrocytes using machine learning显示文摘Astrocytes,a subtype of glial cells,are star-shaped cells that are involved in the homeostasis and blood flow control of the central nervous system(CNS).They are known to provide structural and functional support to neurons,including the regulation of neuronal activation through extracellular ion concentrations,the regulation of energy dynamics in the brain through the transfer of lactate to neurons,and the modulation of synaptic transmission via the release of neurotransmitters such as glutamate and adenosine triphosphate.In addition,astrocytes play a critical role in neuronal reconstruction after brain injury,including neurogenesis,synaptogenesis,angiogenesis,repair of the blood-brain barrier,and glial scar formation after traumatic brain injury(Zhou et al.,2020). | Demetrio Labate Cihan Kayasandik | 2023 | Neural Regeneration Research2023,18,2: | 2 |
| 4 | Living donor liver hilar variations: surgical approaches and implications显示文摘BACKGROUND: Varied vascular and biliary anatomies are common in the liver. Living donor hepatectomy requires precise recognition of the hilar anatomy. This study was undertaken to study donor vascular and biliary tract variations, surgical approaches and implications in living liver transplant patients. METHODS: Two hundred living donor liver transplantations were performed at our institution between 2004 and 2009. All donors were evaluated by volumetric computerized tomography (CT), CT angiography and magnetic resonance cholangiography in the preoperative period. Intraoperative ultrasonography and cholangiography were carried out. Arterial, portal and biliary anatomies were classified according to the Michels, Cheng and Huang criteria. RESULTS: Classical hepatic arterial anatomy was observed in 129 (64.5%) of the 200 donors. Fifteen percent of the donors had variation in the portal vein. Normal biliary anatomy was found in 126 (63%) donors, and biliary tract variation in 70% of donors with portal vein variations. In recipients with single duct biliary anastomosis, 16 (14.4%) developed biliary leak, and 9 (8.1%) developed biliary stricture; however more than one biliary anastomosis increased recipient biliary complications. Donor vascular variations did not increase recipient vascular complications. Variant anatomy was not associated with an increase in donor morbidity. CONCLUSIONS: Living donor liver transplantation provides information about variant hilar anatomy. The success of the procedure depends on a careful approach to anatomical variations. When the deceased donor supply is inadequate living donor transplantation is a life-saving alternative and is safe for the donor and recipient, even if the donor has variant hilar anatomy. | Onur Yaprak Tolga Demirbas Cihan Duran Murat Dayangac Murat Akyildiz Yaman Tokat Yildiray Yuzer | 2011 | Hepatobiliary & Pancreatic Diseases International2011,10,5: | 2 |
| 5 | Left Ventricular Assist Devices and Gastrointestinal Bleeding: A Narrative Review of Case Reports and Case Series显示文摘 | Sameer Islam Cihan Cevik Rosalinda Madonna Wesam Frandah Ebtesam Islam Sherazad Islam Kenneth Nugent | 2013 | Clin Cardiol2013,,: | 2 |
| 6 | Biomarkers for prediction of venous thromboembolism in cancer显示文摘 | Ingrid Pabinger Johannes Thaler Cihan Ay | 2013 | Blood2013,,12: | 2 |
| 7 | Traumatic brain injury and palliative care:a retrospective analysis of 49 patients receiving palliative care during 2013–2016 in Turkey显示文摘Traumatic brain injury(TBI),which is seen more in young adults,affects both patients and their families.The need for palliative care in TBI and the limits of the care requirement are not clear.The aim of this study was to investigate the length of stay in the palliative care center(PCC),Turkey,the status of patients at discharge,and the need for palliative care in patients with TBI.The medical records of 49 patients with TBI receiving palliative care in PCC during 2013–2016 were retrospectively collected,including age and gender of patients,the length of stay in PCC,the cause of TBI,diagnosis,Glasgow Coma Scale score,Glas gow Outcome Scale score,Karnofsky Performance Status score,mobilization status,nutrition route(oral,percutaneous endoscopic gastrostomy),pressure ulcers,and discharge status.These patients were aged 45.4 ± 20.2 years.The median length of stay in the PCC was 34.0 days.These included TBI patients had a Glasg ow Coma Scale score ≤ 8,were not mobilized,received tracheostomy and percutaneous endoscopic gastrostomy nutrition,and had pressure ulcers.No difference was found between those who were discharged to their home or other places(rehabilitation centre,intensive care unit and death) in respect of mobilization,percutaneous endoscopic gastrostomy,tracheostomy and pressure ulcers.TBI patients who were followed up in PCC were determined to be relatively young patients(45.4 ± 20.2 years) with mobilization and nutrition problems and pressure ulcer formation.As TBI patients have complex health conditions that require palliative care from the time of admittance to intensive care unit,provision of palliative care services should be integrated with clinical applications. | Kadriye Kahveci Metin Din?er Cihan Doger Ayse Karhan Yarici | 2017 | Neural Regeneration Research2017,12,1: | 2 |
| 8 | Prediction of wear loss quantities of ferro-alloy coating using different machine learning algorithms显示文摘In this study,experimental wear losses under different loads and sliding distances of AISI 1020 steel surfaces coated with(wt.%)50FeCrC‐20FeW‐30FeB and 70FeCrC‐30FeB powder mixtures by plasma transfer arc welding were determined.The dataset comprised 99 different wear amount measurements obtained experimentally in the laboratory.The linear regression(LR),support vector machine(SVM),and Gaussian process regression(GPR)algorithms are used for predicting wear quantities.A success rate of 0.93 was obtained from the LR algorithm and 0.96 from the SVM and GPR algorithms. | Osman ALTAY Turan GURGENC Mustafa ULAS Cihan OZEL | 2020 | Friction2020,8,1: | 2 |
| 9 | A new approach for prediction of the wear loss of PTA surface coatings using artificial neural network and basic,kernel-based,and weighted extreme learning machine显示文摘Wear tests are essential in the design of parts intended to work in environments that subject a part to high wear.Wear tests involve high cost and lengthy experiments,and require special test equipment.The use of machine learning algorithms for wear loss quantity predictions is a potentially effective means to eliminate the disadvantages of experimental methods such as cost,labor,and time.In this study,wear loss data of AISI 1020 steel coated by using a plasma transfer arc welding(PTAW)method with FeCrC,FeW,and FeB powders mixed in different ratios were obtained experimentally by some of the researchers in our group.The mechanical properties of the coating layers were detected by microhardness measurements and dry sliding wear tests.The wear tests were performed at three different loads(19.62,39.24,and 58.86 N)over a sliding distance of 900 m.In this study,models have been developed by using four different machine learning algorithms(an artificial neural network(ANN),extreme learning machine(ELM),kernel-based extreme learning machine(KELM),and weighted extreme learning machine(WELM))on the data set obtained from the wear test experiments.The R2 value was calculated as 0.9729 in the model designed with WELM,which obtained the best performance among the models evaluated. | Mustafa ULAS Osman ALTAY Turan GURGENC Cihan OZEL | 2020 | Friction2020,8,6: | 2 |
| 10 | Treatment of Chronic Delta Hepatitis显示文摘 | Cihan Yurdaydin | 2012 | Semin Liver Dis2012,,03: | 2 |
| 11 | Sustained Response of Hepatitis B e Antigen-Negative Patients 3 Years After Treatment with Peginterferon Alfa-2a显示文摘 | Patrick Marcellin Ferruccio Bonino George K.K. Lau Patrizia Farci Cihan Yurdaydin Teerha Piratvisuth Rui Jin Selim Gurel Zhi-Meng Lu Jian Wu Matei Popescu Stephanos Hadziyannis | 2009 | Gastroenterology2009,,7: | 2 |
| 12 | Modified limberg Trans position flap for sacrococcygeal pilonidal sinus显示文摘 | MenLes BB LevenLoglu S Cihan A | 2004 | Surg Today2004,34,5: | 1 |
| 13 | Importance of identifying the course of the recurrent laryngeal nerve in total and near-total thy- roid lobectomies 显示文摘 | Acun Z Cinar F Cihan A | 2005 | Am Surg2005,71,3: | 1 |
| 14 | Citizens’opinions about police discretion in criminal investigations显示文摘 | Abdullah Cihan William Wells | 2011 | Police Strategies&Management2011,34,2: | 1 |
| 15 | Trace elements and heavy metals in hair of stage III breast cancer patients 显示文摘 | Benderli Cihan Y Sozen S Oztilrk Yildirim S | 2011 | Biol Trace Elem Res2011,144,13: | 1 |
| 16 | An ambipolar neutral state green polymeric electrochromic显示文摘 | Algi F Cihaner A | 2009 | Organic Electronics2009,10,: | 1 |
| 17 | Sustained Response of Hepatitis B e Antigen-Negative Patients 3 Years After Treatment with Peginterferon Alfa-2a显示文摘 | Patrick Marcellin Ferruccio Bonino George K.K. Lau Patrizia Farci Cihan Yurdaydin Teerha Piratvisuth Rui Jin Selim Gurel Zhi-Meng Lu Jian Wu Matei Popescu Stephanos Hadziyannis | 2009 | Gastroenterology2009,,7: | 1 |
| 18 | On pseudoparallel invariant submanifolds of contact metric manifolds显示文摘 | Sular S Cihanzgür C Murathan C | 2007 | Bull Transilv Univ Brasov Ser B(N S)2007,14,49: | 1 |
| 19 | Screening of Antioxidant, Antimicrobial Activities and Chemical Contents of Edible Mushrooms Wildly Grown in the Black Sea Region of Turkey显示文摘 | Tevfik Ozen Cihan Darcan Oznur Aktop Ibrahim Turkekul | 2011 | Combinatorial Chemistry & High Throughput Screening2011,,2: | 1 |
| 20 | Transport and deposition of polymer-modified Fe0 nanoparticles in 2- D heterogeneous porous media: effects of particle concentration, Fe0 content, and coatings 显示文摘 | Phenrat T Cihan A Kim H-J | 2010 | Environmental Science & Technology2010,44,23: | 1 |