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Tissue distribution of Ag and oxidative stress responses in the freshwater snail Bellamya aeruginosa exposed to sediment-associated Ag nanoparticles

文献类型：期刊论文

作者Bao, Shaopan1; Huang, Jiaolong1,2; Liu, Xiawei1,2; Tang, Wei1; Fang, Tao1
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2018-12-10
卷号644页码:736-746
关键词Bioaccumulation Size Hepatopancreas Toxicity Aquatic organism
ISSN号0048-9697
DOI10.1016/j.scitotenv.2018.07.011
通讯作者Fang, Tao(fangt@ihb.ac.cn)
英文摘要Silver nanoparticles (AgNPs) are among the most widely used engineered nanomaterials and may eventually accumulate in sediments. Limited information is currently available regarding the toxicity, bioaccumulation and distribution of sediment-associated AgNPs in aquatic organisms. In the present study, a freshwater snail Bellamya aeruginosa was exposed via sediment to commercial Ag particles of four nominal sizes: 20 nm (AgNPs-20), 40 nm (AgNPs-40), 80 nm (AgNPs-80), and < 10 mu m (bulk Ag), and to silver nitrate at sub-lethal concentrations (1, 10 and 100 mu g Ag/g sediment). Ag burden and biomarkers of oxidative stress were assessed in different tissues of B. aeruginosa: hepatopancreas, gonad, foot and digestive tracts. All five Ag types were available for uptake by B. aeruginosa when spiked into sediment, and Ag accumulation in different tissues presented the following pattern: hepatopancreas > gonad approximate to digestive tracts > foot. Snails accumulated higher levels of Ag from aqueous Ag than from particulate Ag. In contrast, AgNPs-40 and AgNPs-80 treatments occasionally induced higher oxidative stress than aqueous Ag, indicating the significant role of nanoparticle itself in exerting toxicity. Size-dependent toxicity of AgNPs in sediment was also found, with AgNPs-20 showing lower toxicity than other Ag particles. Overall, this study demonstrated that the toxicity of sediment-associated AgNPs to B. aeruginosa varies with size and differs from aqueous Ag. (C) 2018 Elsevier B.V. All rights reserved.
WOS关键词SILVER NANOPARTICLES ; NEREIS-DIVERSICOLOR ; ESTUARINE POLYCHAETE ; HEDISTE-DIVERSICOLOR ; ENVIRONMENTAL FATE ; DAPHNIA-MAGNA ; TOXICITY ; BIOACCUMULATION ; LAKE ; TRANSFORMATIONS
资助项目National Natural Science Foundation of China[21477159]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000445164000075
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.ihb.ac.cn/handle/342005/29314]  
专题水生生物研究所_水环境工程研究中心_期刊论文
通讯作者Fang, Tao
作者单位1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Bao, Shaopan,Huang, Jiaolong,Liu, Xiawei,et al. Tissue distribution of Ag and oxidative stress responses in the freshwater snail Bellamya aeruginosa exposed to sediment-associated Ag nanoparticles[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2018,644:736-746.
APA Bao, Shaopan,Huang, Jiaolong,Liu, Xiawei,Tang, Wei,&Fang, Tao.(2018).Tissue distribution of Ag and oxidative stress responses in the freshwater snail Bellamya aeruginosa exposed to sediment-associated Ag nanoparticles.SCIENCE OF THE TOTAL ENVIRONMENT,644,736-746.
MLA Bao, Shaopan,et al."Tissue distribution of Ag and oxidative stress responses in the freshwater snail Bellamya aeruginosa exposed to sediment-associated Ag nanoparticles".SCIENCE OF THE TOTAL ENVIRONMENT 644(2018):736-746.

入库方式： OAI收割

来源：水生生物研究所

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