Person:
DULUNDU, ENDER

Profile Picture

Email Address

Birth Date

Research Projects

Organizational Units

OrgUnit Logo
Organizational Unit

Job Title

Last Name

DULUNDU

First Name

ENDER

Name

Filters

2011 - 201912020 - 20221
Reset filters

Settings

Has files: true × Subject: MODEL ×

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    PublicationOpen Access
    Proposal and Validation of a Novel Scoring System for Hepatocellular Carcinomas Beyond Curability Borders
    (JOHN WILEY & SONS LTD, 2022-03) DEMİRTAŞ, COŞKUN ÖZER; Demirtas, Coskun Ozer; Ricco, Gabrielle; Ozdogan, Osman Cavit; Baltacioglu, Feyyaz; Ones, Tune; Yumuk, Perran Fulden; Dulundu, Ender; Uzun, Sinan; Colombatto, Pierro; Oliveri, Filippo; Brunetto, Maurizia Rosanna; Gunduz, Feyza
    Optimal scoring system for clinical prognostic factors in patients with unresectable hepatocellular carcinoma (HCC) is currently uncertain. We aimed to develop and externally validate an easy to use tool, particularly for this population, and named it the unresectable hepatocellular carcinoma prognostic index (UHPI). We evaluated the data of patients with treatment-naive unresectable HCC who were diagnosed in the training center from 2010 to 2019 (n = 209). A simple prognostic model was developed by assigning points for each covariate in proportion to the beta coefficients in the Cox multivariable model. Predictive performance and distinction ability of the UHPI were further evaluated in an independent European validation cohort (n = 147) and compared with 11 other available models. A simple scoring system was derived, assigning 0.5/1/2 scores for six independent covariates including, the Child-Pugh score, Eastern Cooperative Oncology Group performance status, maximum tumor size, vascular invasion or extrahepatic metastasis, lymph node involvement, and alpha-fetoprotein. The UHPI score, ranging from 0 to 6, showed superior performance in prognosis prediction and outperformed 11 other staging or prognostic models, giving the highest homogeneity (c-index, 6-month and 1-year area under the receiver operator characteristic curves), lowest Akaike information criterion, and -2 log-likelihood ratio values. The UHPI score allocated well the risk of patients with unresectable HCC for mortality within the first year, using two cut-off values (low-risk, <0.5; intermediate-risk, 0.5-2; high-risk, >2). Conclusion: The UHPI score can predict prognosis better than other systems in subjects with unresectable HCC and can be used in clinical practice or trials to estimate the 6-month and 1-year survival probabilities for this group.
  • Thumbnail Image
    PublicationOpen Access
    Beneficial effects of alpha lipoic acid on cerulein-induced experimental acute pancreatitis in rats
    (TURKISH ASSOC TRAUMA EMERGENCY SURGERY, 2011) DULUNDU, ENDER; Bulut, Nuriye Esen; Ozkan, Erkan; Ekince, Osman; Dulundu, Ender; Topaloglu, Umit; Sehirli, Ahmet Ozer; Ercan, Feriha; Sener, Goksel
    BACKGROUND The present study aimed to determine the effects of alpha lipoic acid (ALA) on blood and tissue biochemical parameters, as well as tissue histopathology, in an experimental rat model of cerulein-induced acute pancreatitis (AP). METHODS Three groups consisting of eight rats each were used, as follows: Group I. controls; Group 2, cerulein-induced pancreatitis group treated with saline; and Group 3, cerulein-induced pancreatitis group treated with ALA. AP was induced by intraperitoneal administration of cerulein (20 mu g/kg) 4 times at I-hour intervals. The animals were decapitated 12 hours after the last dose of cerulein. Blood amylase, lipase, interleukin (IL)-1 beta, and tumor necrosis factor (TNF)-alpha levels, pancreas tissue glutathione (GSH) and malondialdehyde (MDA) levels, as well as myeloperoxidase (MPO) and Na+-K+-ATPase activity were measured. Pancreatic tissue samples were also evaluated histopathologically under a light microscope. RESULTS While plasma amylase, lipase, IL-1 beta, and TNF-alpha levels, and tissue MDA and MPO levels significantly increased in rats with cerulean-induced AP, tissue GSH and Na+-K+-ATPase activity significantly reduced. These changes were reversed and improved with ALA treatment. CONCLUSION Our findings suggest that ALA may significantly reduce morbidity and mortality by preventing organ dysfunction induced by free radicals in the pancreas.