Toxicity of titanium dioxide nanoparticles on the histology, liver physiological and metabolism, and intestinal microbiota of grouper
文献类型： 外文期刊
作者： Duan, Yafei 1 ; Yang, Yukai 1 ; Zhang, Zhe 1 ; Xing, Yifu 1 ; Li, Hua 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploita, Minist Agr & Rural Affairs,Guangdong Prov Key Lab, Guangzhou 510300, Peoples R China
2.Chinese Acad Fishery Sci, Shenzhen Base South China Sea Fisheries Res Inst, Shenzhen 518121, Peoples R China
3.Sanya Trop Fisheries Res Inst, Key Lab Efficient Utilizat & Proc Marine Fishery R, Sanya 572018, Peoples R China
关键词： Grouper; Nanoparticles; Immunity; Metabolites; Intestinal microbiota
期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.8； 五年影响因子：6.5 ）
ISSN： 0025-326X
年卷期： 2023 年 187 卷
页码：
收录情况： SCI
摘要： Titanium dioxide nanoparticles (nano-TiO2) are a common environmental pollutant threatening aquatic animals. The natural habitats and cultured environments of groupers make them vulnerable to nanoparticle pollution. In this study, hybrid grouper juveniles were separately exposed to 1 or 10 mg/L nano-TiO2 for 14 days, and the toxicological response of these groupers were investigated. After nano-TiO2 exposure, the liver showed apparent histopathology and intestinal goblet cells were also affected. The transcription of antioxidant and apoptosis-related genes were down-regulated, and the inflammatory factor TNF-alpha was up-regulated in the liver. The metabolite patterns of the liver were disturbed, especially amino acid metabolism. The diversity and composition of the intestinal microbiota were also altered especially the genera Lactobacillus and Nautella. The changes of several intestinal bacteria were correlated with the immune factors and metabolites of respective hosts. We concluded that nano-TiO2 exposure negatively affects the physiological homeostasis of groupers.
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