Elevated temperature disrupts the mucosal structure and induces an immune response in the intestine of whiteleg shrimp Litopenaeus vannamei (Boone, 1931) (Decapoda: Dendrobranchiata: Penaeidae)

文献类型： 外文期刊

第一作者： Duan, Yafei

作者： Duan, Yafei;Wang, Yun;Zhang, Jiasong;Xiong, Dalin;Duan, Yafei;Wang, Yun;Zhang, Jiasong;Xiong, Dalin;Duan, Yafei;Wang, Yun;Zhang, Jiasong;Xiong, Dalin

作者机构：

关键词： antioxidants; enzyme activity; gene expression; oxidative stress; thermal stress

期刊名称：JOURNAL OF CRUSTACEAN BIOLOGY （ 影响因子：1.43； 五年影响因子：1.501 ）

ISSN： 0278-0372

年卷期： 2018 年 38 卷 5 期

页码：

收录情况： SCI

摘要： We investigated the effects of thermal stress on the mucosal structure and the immune response in the intestine of the whiteleg shrimp Litopenaeus vannamei (Boone, 1931). Examination of histological sections showed that thermal stress damaged the epithelium of the intestinal mucosa. The experimental shrimp were acclimated for one week before thermal stress. In response to thermal stress, there was an increase in the oxidative stress parameters, including the activity of center dot O-2(-)-generation capacity and the contents of lipid peroxidation and malondialdehyde, while antioxidant activities (superoxide dismutase, catalase, and glutathione peroxidase) and the expressions of the heat shock protein 70 and thioredoxin genes showed significant variations (P < 0.05). Immune activities (acid phosphatase and alkaline phosphatase) were decreased after 24-72 h of thermal stress, and the metabolic activity of lactate dehydrogenase and the expression of the hypoxia-inducible factor 1 alpha gene were higher than those of the control group. These results revealed that thermal stress impaired the intestinal barrier of the shrimp by damaging the mucosal structure, inducing oxidative stress, and compromising the immune and metabolic status.

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