The effects of acute ammonia stress on liver antioxidant, immune and metabolic responses of juvenile yellowfin tuna ( Thunnus albacares) )

文献类型： 外文期刊

第一作者： Sun, Yongyue

作者： Sun, Yongyue;Fu, Zhengyi;Ma, Zhenhua;Sun, Yongyue;Fu, Zhengyi;Ma, Zhenhua;Sun, Yongyue;Fu, Zhengyi;Ma, Zhenhua;Sun, Yongyue;Fu, Zhengyi;Ma, Zhenhua;Fu, Zhengyi;Ma, Zhenhua

作者机构：

关键词： Liver; Antioxidant; Immunity; Metabolism; Gene expression

期刊名称：COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY （ 影响因子：2.1； 五年影响因子：2.2 ）

ISSN： 1095-6433

年卷期： 2024 年 297 卷

页码：

收录情况： SCI

摘要： The impact of acute ammonia nitrogen (NH3-N) stress on the antioxidant, immune, and metabolic capabilities of the liver in juvenile yellowfin tuna (Thunnus albacares) is not yet fully understood. This study set NH3-N concentrations at 0 (natural seawater, control group), 5, and 10 mg/L, and sampled the liver at 6, 24, and 36 h for analysis. As time progresses, NH3-N exposure leads to an increase in malondialdehyde (MDA) concentrations. The activity of superoxide dismutase (SOD) and the relative expression levels of related genes, as well as the activity of immune enzymes and ATPase, decrease. The levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and interleukin-10 (IL-10) exhibit different fluctuation patterns. Low concentrations of NH3-N increase the activity of catalase (CAT) and glutathione peroxidase (GHS-PX) and the relative expression levels of the Na+K+-ATPase gene. The relative expression levels of the interleukin-6 receptor (IL-6r) gene show a decreasing trend. High concentrations of NH3-N decrease the activity of CAT, GSH-PX, and the relative expression levels of related genes. When the NH3-N concentration is below 5 mg/L, the stress duration should not exceed 36 h. When the NH3-N concentration is between 5 and 10 mg/L, the stress duration should not exceed 24 h, otherwise, it will have a negative impact on the liver of the juvenile yellowfin tuna. This study provides scientific data for the artificial breeding and recirculating aquaculture of juvenile yellowfin tuna.

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