Changes in antioxidant defense system in gills of Capoeta umbla caught from Uzuncayir Dam Lake,Turkey |
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| Institution: | 1. US Environmental Protection Agency, National Homeland Security Research Center, United States;2. US Environmental Protection Agency, Office of Air and Radiation/National Analytical Radiation Environmental Laboratory, United States;3. US Environmental Protection Agency, Office of Solid Waste and Emergency Response/Office of Resource Conservation and Recovery/Materials Recovery and Waste Management Division, United States;4. US Environmental Protection Agency, Office of Water/Water Security Division, United States;5. US Environmental Protection Agency, Office of Solid Waste and Emergency Response/Office of Emergency Management/CBRN Consequence Management Advisory Team, United States;1. Department of Environmental Engineering Safety and Health, Hung Kuang University, Shalu District, Taichung City 43302, Taiwan;2. Department of Health Nutrition and Biotechnology, Asia-Pacific Institute of Creativity, Toufen, Miaoli 35153, Taiwan |
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| Abstract: | The aim of this work was to determine the seasonal changes in the activities of selected biomarkers in Capoeta umbla (Heckel, 1843) caught from Uzuncayir Dam Lake (Tunceli, Turkey) and to evaluate the effects of environmental factors on these activities. Fish were sampled on seasonal basis, and superoxide dismutase, catalase, glutathione peroxidase activities and levels of glutathione and malondialdehyde in gills were determined. Significant variations of oxidative stress biomarkers were observed between seasons and sites. The results of this study show that seasonal variations of oxidative stress responses and lipid peroxidation in gills of C. umbla are sensitive to the contaminants present in water of Uzuncayir Dam Lake and selected parameters are in valuable biomarkers for monitoring of water systems, since they give an early warning signal of effects of xenobiotics on aquatic organisms at molecular levels which help to prevent their effects at organismal level. |
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| Keywords: | Antioxidant defense system Biomarker Gills Season |
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