Pollution of aquatic systems has become a recurring problem nowadays. The main goal of this study is to assess the impact of Cd and Pb on the antioxidant system of Sphyraena barracuda collected at Kpeme of South Togo. Two enzymatic biomarkers (catalase and glutathione-S-transferase) and two non-enzymatic biomarkers (malondialdehyde and glutathione) of oxidative stress were measured in various organs like liver, heart, gills and kidney of Sphyraena barracuda. The results indicated that stress was induced by Cd and Pb in these organs through lipid peroxidation and glutathione production. However, there was an alteration of the antioxidant system by low glutathione-S-transferase and catalase activities in the gills. Whereas, in other organs like heart, liver, and kidney, higher activity of glutathione-S-transferase and lesser activity of catalase was observed. From the results, it is very clear that Cd and Pb altered the antioxidant system of fish in comparison to the control samples.

中文翻译：

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从多哥南部克佩姆采集的海水鱼类中的梭鱼（Sphyraena barracuda）（爱德华兹，1771年）有毒金属（镉和铅）导致抗氧化系统功能障碍

如今，水生系统的污染已成为一个反复出现的问题。这项研究的主要目的是评估Cd和Pb对南多哥Kpeme收集的梭子鱼抗氧化系统的影响。在梭鱼的肝脏，心脏，g和肾脏等器官中测定了两种氧化应激的酶生物标记物（过氧化氢酶和谷胱甘肽-S-转移酶）和两种非酶氧化生物标记物（丙二醛和谷胱甘肽）。。结果表明，镉和铅通过脂质过氧化和谷胱甘肽的产生诱导了这些器官的应激。然而，the中低谷胱甘肽-S-转移酶和过氧化氢酶的活性改变了抗氧化剂系统。而在心脏，肝脏和肾脏等其他器官中，谷胱甘肽-S-转移酶的活性较高，而过氧化氢酶的活性较低。从结果很明显，与对照样品相比，Cd和Pb改变了鱼的抗氧化系统。