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

2008 - 200912010 - 20132
Reset filters

Settings

Author: ŞENER, GÖKSEL × Has files: true ×

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    PublicationOpen Access
    Grape seed extract treatment reduces hepatic ischemia-reperfusion injury in rats
    (JOHN WILEY & SONS LTD, 2008-01) DULUNDU, ENDER; Sehirli, Ozer; Ozel, Yahya; Dulundu, Ender; Topaloglu, Umit; Ercan, Feriha; Sener, Goksel
    This study was designed to determine the possible protective effect of grape seed extract (GSE), a widely used antioxidant dietary supplement, on hepatic ischemia/reperfusion (I/R) injury. Wistar albino rats were subjected to 45 min of hepatic ischemia, followed by a 60 min reperfusion period. GSE was administered in a dose of 50 mg/kg/day orally for 15 days before (I/R) injury and repeated before the reperfusion period. Liver samples were taken for histological examination or determination of hepatic malondialdehyde (MDA), glutathione (GSH) and myeloperoxidase (MPO) activity. Serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels were determined to assess liver functions. Lactate dehydrogenase (LDH) and cytokines (TNF-alpha and IL-1 beta) were also assayed in serum samples for the evaluation of generalized tissue damage. Ischemia/reperfusion caused a significant decrease in hepatic GSH, and significant increases in MDA level, and MPO activity. Serum AST and ALT levels, as well as LDH activity and plasma TNF-alpha and IL-1 beta levels were also elevated in the I/R group. Treatment with GSE reversed all these biochemical parameters as well as histological alterations induced by I/R. In conclusion, GSE reduced I/R-induced organ injury through its ability to balance the oxidant-antioxidant status, to inhibit neutrophil infiltration and to regulate the release of inflammatory mediators. Copyright (c) 2007 John Wiley & Sons, Ltd.
  • 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.
  • Thumbnail Image
    PublicationOpen Access
    Antioxidant and anti-inflammatory effects of curcumin against hepatorenal oxidative injury in an experimental sepsis model in rats
    (TURKISH ASSOC TRAUMA EMERGENCY SURGERY, 2013) DULUNDU, ENDER; Savcun, Gulay Yilmaz; Ozkan, Erkan; Dulundu, Ender; Topaloglu, Umit; Sehirli, Ahmet Ozer; Tok, Olgu Enis; Ercan, Feriha; Sener, Goksel
    BACKGROUND: To investigate the effects of curcumin, an antioxidant and anti-inflammatory agent, on free oxygen radicals and lipid peroxidation in an experimental sepsis model, as well as to determine the role of curcumin in preventing hepatorenal tissue damage caused by sepsis. METHODS: The rats were randomly divided into three groups (n=8) as follows: control group (group 1); sepsis group (group 2); and sepsis + curcumin group (group 3). Sepsis was created using the cecal ligation and perforation (CLP) method. Curcumin was administered intraperitoneally (200 mg/kg) in two equal doses just after the perforation and at twelve hours post-perforation. RESULTS: Serum TNF-alpha and IL-1 beta, and tissue MDA and MPO values were higher, whereas tissue GSH and Na+/K+-ATPase values were lower, in group 2 as compared to group 1. These values in group 3 were the inverse of those in group 2. As compared to group 1, histopathological evaluation of group 2 showed damaged hepatocytes, glomeruli, and tubules, whereas the damage was significantly reduced in group 3 as compared to group 2. CONCLUSION: The strong antioxidant and anti-inflammatory effects of curcumin against potential hepatorenal damage were shown using an experimental sepsis model in rats.