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Articles by Ulker Eren
Total Records ( 2 ) for Ulker Eren
  Sadiye Kum , Mustafa Sandikci , Ulker Eren and Nursal Metin
  The aim of this study was to investigate frequency of fatty liver and kidney of the developing and adult rats exposed to formaldehyde (HCHO) or xylene or a combination of these two agents. Ninety six female Sprague-Dawley rats were used in this study. At the beginning of the experiment, the rats were randomly divided into four groups with following ages. The animals were exposed to gases of technical xylene (300 ppm), HCHO (6 ppm) or technical xylene + HCHO (150 +3 ppm), 8 day-1 for 6 weeks. After the exposure period, the rats were anesthetized with xylazin-ketamine intraperitoneally. Animals were sacrificed by cervical dislocation. The weight of liver and kidney were measured. Left kidney and liver obtained from each rat. Sections were stained HδE, for the histopathologic investigation and sections stained by the Oilred O and Sudan Black stains for the demonstration of neutral triglycerides. At the end of the study period, the fat deposition observed in the liver and kidneys of the experimental groups was in the form of fine granular fats. This study showed that inhalation of HCHO, xylene or its combination (xylene + HCHO) lead to deposition of adipose tissue in the liver and kidneys.
  Vadullah Eren , Ozay Gules , Ulker Eren and Resat Nuri Asti
  In this study, the effects organic zinc and copper mineral supplementation in Kivircik sheep during the pre and post-partum period was investigated by decreasing the normally given inorganic mineral level by 25%. The control group (n = 8) received copper sulfate and zinc sulfate and the treatment group (n = 8) received copper chelate and zinc chelate. The difference between the mean live weight and total weight gain between the groups was not significant. The mean serum copper and zinc values, skin copper and zinc values and wool zinc value were numerically higher in the treatment group. Additionally, the mean wool copper and the skin dry matter values were higher (p<0.05) in the treatment group. At the end of the study, the mean feces copper (p<0.05) and zinc levels (p<0.01) were significantly lower in the treatment group. During examination of histological structure of the skin, researchers observed that the Str. papillare was thin (p<0.001) in the treatment group. No other differences between the skin features of the treatment and control group were observed. In addition, the decrease in the thickness of the Str. papillare may be a result of tightening due to the positive effect of organically ingested copper and zinc on connective tissue fibers.
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