| Content Provider |
World Health Organization (WHO)-Global Index Medicus |
| Author |
Park, Sun-Young Chung, Jiwoong Colman, Benjamin P. Matson, Cole W. Kim, Younghun Lee, Byung-Cheon Kim, Phil-Je Choi, Kyunghee Choi, Jinhee |
| Description |
Country affiliation: South Korea Author Affiliation: Park SY ( School of Environmental Engineering, Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul, South Korea.); Chung J ( School of Environmental Engineering, Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul, South Korea.); Colman BP ( Department of Biology, Duke University, Durham, North Carolina, USA.); Matson CW ( Center for the Environmental Implications of NanoTechnology, Duke University, Durham, North Carolina, USA.); Kim Y ( Center for the Environmental Implications of NanoTechnology, Duke University, Durham, North Carolina, USA.); Lee BC ( Department of Environmental Science and Center for Reservoir and Aquatic Systems Research, Baylor University, Waco, Texas, USA.); Kim PJ ( Department of Chemical Engineering, Kwangwoon University, Seoul, South Korea.); Choi K ( Risk Assessment Division, National Institute of Environmental Research, Incheon, Korea.); Choi J ( Risk Assessment Division, National Institute of Environmental Research, Incheon, Korea.) |
| Abstract |
Although sediment is generally considered to be the major sink for nanomaterials in aquatic environments, few studies have addressed the ecotoxicity of nanomaterials in the presence of sediment. In the present study, the ecotoxicity of silver nanoparticles (AgNPs) with a range of organic coatings was examined in a freshwater sediment-dwelling organism, Chironomus riparius, using acute and chronic ecotoxicity endpoints, including molecular indicators. The toxicity of AgNPs coated with different organic materials, such as polyvinylpyrrolidone, gum arabic, and citrate, to C. riparius was compared with that of bare-AgNPs and $AgNO_{3}$ (ionic silver). Total silver concentration was also measured to monitor the behavior of the AgNPs in water and sediment and to determine how ion dissolution affects the toxicity of all AgNPs. The coated- and bare-AgNPs caused DNA damage and oxidative stress-related gene expression. In addition, the bare-AgNPs and $AgNO_{3}$ had a significant effect on development and reproduction. The surface coatings generally mitigated the toxicity of AgNPs to C. riparius, which can be explained by the reduced number of ions released from coated-AgNPs. Citrate-AgNPs caused the most significant alteration at the molecular level, but this did not translate to higher-level effects. Finally, comparing previously conducted studies on AgNP-induced gene expression without sediments, the authors show that the presence of sediment appears to mitigate the toxicity of AgNPs. Environ Toxicol Chem 2015;34:2023–2032. © 2015 SETAC |
| File Format |
HTM / HTML |
| ISSN |
07307268 |
| Issue Number |
9 |
| Volume Number |
34 |
| e-ISSN |
15528618 |
| Journal |
Environmental Toxicology and Chemistry |
| Language |
English |
| Publisher |
Wiley |
| Publisher Date |
2015-09-01 |
| Publisher Place |
United States |
| Access Restriction |
One Nation One Subscription (ONOS) |
| Subject Keyword |
Chironomidae Water Pollutants, Chemical Research Support, U.s. Gov't, Non-p.h.s. Research Support, Non-u.s. Gov't Oxidative Stress Toxicity Discipline Environmental Health Transcriptome Discipline Toxicology Metabolism Drug Effects Dna Damage Journal Article Povidone Silver Geologic Sediments Chemistry Animals Discipline Chemistry Genetics Citric Acid Toxicity Tests Insect Proteins Metal Nanoparticles |
| Content Type |
Text |
| Resource Type |
Article |
| Subject |
Environmental Chemistry Health, Toxicology and Mutagenesis |
