文献类型： 外文期刊

作者： Li, Qingsong ¹ ; Liu, Yulin ¹ ; Li, Shengxuan ¹ ; Guo, Xiaoze ² ; Fu, Yunyin ¹ ; He, Naijuan ¹ ; Ruan, Guoliang ¹ ; Wang, Qian ¹ ; Gao, Weihua ¹ ; Fang, Liu ¹ ;

作者机构： 1.Yangtze Univ, Innovat Technol Res Ctr Crayfish Breeding & Hlth F, Jingzhou 434024, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Anim Husb & Vet Med, Nanchang 330200, Jiangxi, Peoples R China

3.Yangtze Univ, Coll Anim Sci, Dept Fisheries, Jingzhou 434024, Peoples R China

关键词： Nitrite exposure; Oxidation stress; Gills; Procambarus clarkii

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.622； 五年影响因子：4.799 ）

ISSN： 1050-4648

年卷期： 2022 年 131 卷

页码：

收录情况： SCI

摘要： Nitrite is the major environmental pollutant in the freshwater aquaculture environment, which has a negative impact on aquatic species growth. Currently, we know that the main way nitrite enters crustaceans is through their gills. In this study, a total of 96 h acute nitrite stress (60 mg/L) experiments were conducted, and the impact of the serum biochemical parameters, gill oxidase activity and oxidative-related gene expression of red swamp crayfish were evaluated. After exposure to nitrite for 0, 6, 12, 24, 48, and 96 h, hemolymph and gills samples were taken at each time point. In the serum, acute nitrite stress significantly increased glutamic-oxaloacetic transaminase (GOT) and alanine aminotransferase (ALT) activities after 6 h of exposure, decreased total pro-tein (TP) and albumin (ALB) levels after 24 h and 48 h of exposure, respectively. In the gills, the activities of catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were enhanced to the maximum level at 12 h, 24 h and 24 h, respectively. The contents of malondialdehyde (MDA) and lipid peroxide (LPO) were increased significantly after 12 h and 24 h exposure, respectively. In addition, the expression levels of antioxidative-related genes, including hsp70, fer and mt, were significantly upregulated in the gills after 6 h of exposure. The results indicated that acute nitrite stress changed the serum physiological status, induced oxidative stress and caused damage to gill cells in P. clarkii.