Salinity mediates the toxic effect of nano-TiO2 on the juvenile olive flounder Paralichthys olivaceus

文献类型： 外文期刊

第一作者： Huang, Xizhi

作者： Huang, Xizhi;Lan, Yawen;Liu, Zekang;Guo, Qindan;Liu, Liping;Hu, Menghong;Wu, Fangli;Lu, Weiqun;Wang, Youji;Huang, Xizhi;Lan, Yawen;Liu, Zekang;Guo, Qindan;Liu, Liping;Hu, Menghong;Wu, Fangli;Lu, Weiqun;Wang, Youji;Huang, Xizhi;Lan, Yawen;Liu, Zekang;Guo, Qindan;Liu, Liping;Hu, Menghong;Wu, Fangli;Lu, Weiqun;Wang, Youji;Huang, Wei;Wang, Youji;Wang, Youji;Sui, Yanming

作者机构：

关键词： Nano-TiO2; Salinity; Paralichthys olivaceus; Oxidative stress; Histopathology

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2018 年 640 卷

页码：

收录情况： SCI

摘要： Increased production of engineered nanoparticles has raised extensive concern about the potential toxic effects on marine organisms living in estuarine and coastal environments. Meanwhile, salinity is one of the key environmental factors that may influence the physiological activities in flatfish species inhabiting in those waters due to fluctuations caused by freshwater input or rainfall. In this study, we investigated the oxidative stress and histopathological alteration of the juvenile Paralichthys olivaceus exposed to nano-TiO2 (1 and 10 mg L-1) under salinities of 10 and 30 psu for 4 days. In the gills, Na+-K+-ATPase activity significantly deceased after 4 days 10 psu exposure without nano-TiO2 compared with 1 day of acclimating the salinity from the normal salinity (30 psu) to 10 psu. Under this coastal salinity, low concentration (1 mg L-1) of nano-TiO2 exerted significant impacts. In the liver, the activities of superoxide dismutase, catalase, the levels of lipid peroxide and malondialdehyde increased with nano-TiO2 exposed under 30 psu. Such increase indicated an oxidative stress response. The result of the integrated biomarker responses showed that P. olivaceus can be adversely affected by high salinity and high concentration of nano-TiO2 for a short-term (4 days) exposure. The histological analysis revealed the accompanying severe damages for the gill filaments. Principal component analysis further showed that the oxidative stress was associated with the nano-TiO2 effect at normal salinity. These findings indicated that nano-TiO2 and normal salinity exert synergistic effects on juvenile P. olivaceus, and low salinity plays a protective

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序