Browsing by Author "Deǧer, S."

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Determination of the Status of Lipid Peroxidation and Antioxidants in Cattle Infected With Dictyocaulus Viviparus
(2008) Deǧer, S.; Deǧer, Y.; Ertekin, A.; Gül, A.; Biçek, K.; Ozdal, N.
Endoparasites cause significant economic losses and health problems in domestic animals. In this study, lipid peroxidation and the antioxidant status were investigated in the lung tissue taken from twenty cattle infected with Dictyocaulus viviparus and ten healthy cattle. Malondialdehyde superoxide dismutase, catalase, glutathione, vitamin C and beta-carotene were measured. In comparison to the control group, the concentration of MDA was high (p < 0.001), but the activities of Cu-Zn-SOD and CAT, and the concentration of GSH, vitamin C and beta-carotene were low (Cu-Zn-SOD, CAT, GSH, vitamin C, p < 0.001 and beta-carotene p < 0.05) in the parasite infected group. These results suggested that endoparasitic infection is among the major causes of oxidative stress. Lipid peroxidation was observed and the activities and concentrations of antioxidants systems were decreased in the lungs of cattle infected with Dictyocaulus viviparus.
Lipid Peroxidation and Antioxidant Potential of Sheep Liver Infected Naturally With Distomatosis
(2008) Deǧer, Y.; Ertekin, A.; Deǧer, S.; Mert, H.
The aim of this study was to assess the effects of natural distomatosis infections on sheep liver malondialdehyde (MDA) concentration, activities of enzymatic antioxidants (glutathione peroxidase (GPx), superoxide dismutase (Cu, Zn-SOD), catalase (CAT)) and concentrations of non-enzymatic antioxidants (reduced glutathione (GSH), vitamin C, and beta-carotene). Eighteen Akkaraman sheep naturally infected with Fasciola sp and Dicrocoelium dentriticum (D. dentriticum) and ten healthy Akkaraman sheep were included in the study Liver samples for the analysis of MDA, GPx, Cu, Zn-SOD, CAT, GSH, vitamin C, and beta-carotene and blood samples for the measurement of alanine aminotransferase and aspartate aminotransferase were collected immediately after sheep in the two groups were slaughtered. The concentration of MDA and activity of GPx in the group with distomatosis were higher than in the control group (P < 0.001). However, the Cu, Zn-SOD, CAT activities and the GSH, vitamin C concentrations in the infected group were significantly lower than in the control group (P < 0.001). The serum beta-carotene was not found to be statistically different in the two groups (P > 0.05). ALT and AST serum activities of the group with distomatosis were significantly higher in comparison to the control group (P < 0.001). In this study it was demonstrated that lipid peroxidation increased and activities or/and concentrations of antioxidant compounds were significantly changed in the liver of sheep with distomatosis.
The Prevalence of Linguatula Serrata (Fröhlich, 1789) Nymphs in Sheep in the Van Province
(2009) Gül, A.; Deǧer, S.; Denizhan, V.
This research was carried out in order to detect the prevalence of Linguatula serrata nymphs in lung and mesenteric lymph nodes of sheep in Van province. For this purpose, mesenteric lymph nodes of 347 sheep and lung lymph nodes of 224 sheep were examined. L. serrata nymphs were found in 18 (5.19%) out of 347 sheep. L. serrata nymphs were not found in the lung lymph nodes of 224 sheep. In infected sheep, a total of 19 L. serrata nymphs were collected and two nymphs of L. serrata were seen in one mesenteric lymph node.