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Effects of ammonia toxicity on the histopathology, detoxification, oxidative stress, and immune response of the cuttlefish Sepia pharaonis and the mitigation of gamma-aminobutyric acid

文献类型： 外文期刊

作者： Liang, Yunshi 1 ; Wu, Yi 1 ; Li, Jianping 1 ; Peng, Ruibing 1 ; Jiang, Maowang 1 ; Jiang, Xiamin 1 ; Chen, Siqing 2 ; Lin, Jianyuan 3 ;

作者机构： 1.Ningbo Univ, Sch Marine Sci, Ningbo 315211, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Lab Marine Fisheries Sci & Food Prod Proc, Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266071, Peoples R China

3.Zhejiang Wanli Univ, Ningbo 315100, Peoples R China

关键词： Sepia pharaonis; gamma-Aminobutyric acid; Ammonia toxicity

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：7.129； 五年影响因子：7.284 ）

ISSN： 0147-6513

年卷期： 2022 年 232 卷

页码：

收录情况： SCI

摘要： In this study, gamma-aminobutyric acid (GABA) was examined as an additional supplement to improve the ammonia stress resistance of S. pharaonis. Specifically, we added different doses of GABA (0, 20, 40, 60, 80, and 100 mg/ kg) to food, cultivated S. pharaonis in regular seawater for 8 weeks and then in 8.40 mg/L ammonia seawater for 48 h and then investigated the accumulation of ammonia (the hepatic ammonia content), ammonia detoxification process (the urea content), antioxidant enzymes (superoxide dismutase (SOD) and catalase (CAT) enzyme activities), immune response (the serum haemolytic complement (C3) and lysozyme (LYZ) contents), membrane lipid peroxidation (malondialdehyde (MDA)) and histopathology of the liver. The results showed that ammonia poisoning could induce ammonia and MDA accumulation and subsequently lead to oxidative stress (decreases in SOD and CAT activities), immunosuppression (reductions in the haemolytic C3 and LYZ content), and histopathological injury in the liver. The application of GABA had a significant effect on alleviating the adverse effect of ammonia poisoning, and 80-100 mg/kg treatment exerted the best effect. This treatment significantly reduced the ammonia and MDA contents, significantly increased the urea content, increased the SOD, CAT, C3 and LYZ activities, reduced the MDA content, suppressed membrane lipid peroxidation, and significantly improved the histopathological injury to the liver. In summary, the results could provide a new method for mitigating liver damage, alleviating the physiological and metabolic disorders caused by ammonia stress in cuttlefish, and provide a theoretical basis for the application of GABA in alleviating ammonia poisoning.

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