Abdel-Khalek Amr Adel, Elhaddad Engy, Mamdouh Samar, Marie Mohamed-Assem Saed
Department of Zoology, Faculty of Science, Cairo University, Giza, Egypt.
Department of Medical Science, Faculty of Dentistry, British University in Egypt, Cairo, Egypt.
Bull Environ Contam Toxicol. 2018 Jul;101(1):92-98. doi: 10.1007/s00128-018-2366-9. Epub 2018 May 29.
To study whether the effluents of Sabal drain could affect the health status of Oreochromis niloticus; site2 (south part of main canal), site3 (at the canal outlet), site4 (north part of main canal) and site1 (reference site) were selected. Compared to the reference fish, activities of superoxide dismutase and glutathione peroxidase in addition to glutathione reduced and thiobarbituric acid reactive substances concentrations of the gills showed significant (p < 0.05) increase with different levels in all studied sites. Whereas, catalase activities revealed significant (p < 0.05) decrease in all studied sites with maximum decrease in site3. The recorded histopathological lesions were correlated with the distance from discharge point. Gills, liver and kidney of site3 had the worst histopathological conditions based on the frequency of alterations appearance and size of the affected areas. While, the regressive alterations that recorded in site2 and site4 suggest the onset of adaptive histological mechanisms.
为研究萨巴尔排水渠的废水是否会影响尼罗罗非鱼的健康状况，选取了2号位点（主渠南部）、3号位点（渠口处）、4号位点（主渠北部）和1号位点（参考位点）。与对照鱼相比，所有研究位点的鳃中超氧化物歧化酶和谷胱甘肽过氧化物酶的活性，以及还原型谷胱甘肽和硫代巴比妥酸反应性物质的浓度均有显著（p < 0.05）不同程度的升高。然而，所有研究位点的过氧化氢酶活性均显著（p < 0.05）降低，其中3号位点降低最多。记录的组织病理学损伤与距排放点的距离相关。基于病变出现频率和受影响区域大小，3号位点的鳃、肝脏和肾脏组织病理学状况最差。而在2号位点和4号位点记录到的退行性改变表明适应性组织学机制开始出现。
