Acute hypoxic stress: Effect on blood parameters, antioxidant enzymes, and expression of HIF-1alpha and GLUT-1 genes in largemouth bass (Micropterus salmoides)

文献类型： 外文期刊

第一作者： Yan, T.

作者： Yan, T.;Wu, H.;Xiao, Q.;Fu, H. M.;Luo, J.;Zhao, L. L.;Wang, Y.;Yang, S. Y.;Sun, J. L.;Zhou, J.;Ye, X.;Li, S. J.;Ye, X.;Li, S. J.

作者机构：

关键词： Largemouth bass;Acute hypoxic stress;Blood parameters;Antioxidant enzymes;HIF-1 alpha;GLUT-1;Gene expression

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Dissolved oxygen (DO) plays a crucial role in survival, growth, and normal physiological functions of aquatic organisms. Nevertheless, the mechanisms involved in hypoxic stress and adaptation have not been fully elucidated in Largemouth bass (Micropterus salmoides). To reveal the effect of acute hypoxia on Largemouth bass, we simulated acute hypoxia (DO: 1.2 +/- 0.2 mg/L) in the laboratory and analyzed physiological parameters (RBCs, Hb, SOD, CAT, NA(+)/K+-ATPase, GPx, and MDA) and gene expression (HIF-1 alpha and GLUT-1) in Largemouth bass exposed to various durations of acute hypoxia (0,1, 2, 4, 8,12, and 24 h). Our results indicated that acute hypoxic exposure significantly increased RBCs but decreased Hb. In addition, antioxidant enzyme activity was enhanced significantly in the liver and muscles at the initial stage of acute hypoxic exposure, but decreased significantly in gills during the entire process of hypoxic exposure. Furthermore, the expression levels of HIF-1 alpha and GLUT-1 mRNA were significantly upregulated in Largemouth bass under acute hypoxic exposure. In conclusion, our study provides a valuable basis for further elucidation of hypoxic adaptation and facilitates husbandry for an economically valuable species. (C) 2017 Published by Elsevier Ltd.

分类号： S9

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