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Tissue distribution of Ag and oxidative stress responses in the freshwater snail Bellamya aeruginosa exposed to sediment-associated Ag nanoparticles
Bao, Shaopan1; Huang, Jiaolong1,2; Liu, Xiawei1,2; Tang, Wei1; Fang, Tao1
2018-12-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume644Issue:1Pages:736-746
AbstractSilver 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.
SubtypeArticle
KeywordBioaccumulation Size Hepatopancreas Toxicity Aquatic Organism
DOI10.1016/j.scitotenv.2018.07.011
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(21477159) ; National Natural Science Foundation of China(21477159)
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS KeywordSILVER NANOPARTICLES ; NEREIS-DIVERSICOLOR ; ESTUARINE POLYCHAETE ; HEDISTE-DIVERSICOLOR ; ENVIRONMENTAL FATE ; DAPHNIA-MAGNA ; TOXICITY ; BIOACCUMULATION ; LAKE ; TRANSFORMATIONS
WOS IDWOS:000445164000075
Funding OrganizationNational Natural Science Foundation of China(21477159) ; National Natural Science Foundation of China(21477159)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/56156
Collection水环境工程研究中心
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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(1):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(1),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 644.1(2018):736-746.
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