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Bioaccumulation-based silver nanoparticle toxicity in Daphnia magna and maternal impacts.
Environ Toxicol Chem. 2017 12; 36(12):3359-3366.ET

Abstract

In the present study, we tested whether bioaccumulation in specific tissues of Daphnia magna could explain silver nanoparticle (AgNP) toxicity. Daphnids were exposed to different concentrations of well-suspended AgNPs and AgNO3 . The accumulations of Ag in the whole body, gut, and nongut tissues, as well as the mortality of daphnids, were recorded over a period of 7 d. Regression analysis showed a higher degree of positive correlation between the concentration of Ag in the nongut tissues than gut tissues and the mortality of daphnids. The results strongly suggested that the toxicity of AgNPs could be better explained in terms of bioaccumulation of AgNPs in the nongut tissues. We further tested the maternal transfer of AgNPs in daphnids into the next generation using radioactive tracers, which were able to detect as low as 1.0 to 3.2% of total accumulated Ag transferred to the neonates. The AgNPs significantly affected the reproduction process during the first 2 broods after exposure, whereas AgNO3 only had significant effects on the first brood. It is possible that AgNPs have longer adverse effects than AgNO3 on the reproduction of Daphnia. The present study identified the sensitive site of AgNP toxic action in daphnids and documented the extent of maternal transfer and the significant influence of AgNPs on the reproduction of daphnids. Environ Toxicol Chem 2017;36:3359-3366. © 2017 SETAC.

Authors+Show Affiliations

Division of Life Science, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong.Marine Environmental Laboratory, HKUST Shenzhen Research Institute, Shenzhen, China.Division of Life Science, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong. Marine Environmental Laboratory, HKUST Shenzhen Research Institute, Shenzhen, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28722828

Citation

Pakrashi, Sunandan, et al. "Bioaccumulation-based Silver Nanoparticle Toxicity in Daphnia Magna and Maternal Impacts." Environmental Toxicology and Chemistry, vol. 36, no. 12, 2017, pp. 3359-3366.
Pakrashi S, Tan C, Wang WX. Bioaccumulation-based silver nanoparticle toxicity in Daphnia magna and maternal impacts. Environ Toxicol Chem. 2017;36(12):3359-3366.
Pakrashi, S., Tan, C., & Wang, W. X. (2017). Bioaccumulation-based silver nanoparticle toxicity in Daphnia magna and maternal impacts. Environmental Toxicology and Chemistry, 36(12), 3359-3366. https://doi.org/10.1002/etc.3917
Pakrashi S, Tan C, Wang WX. Bioaccumulation-based Silver Nanoparticle Toxicity in Daphnia Magna and Maternal Impacts. Environ Toxicol Chem. 2017;36(12):3359-3366. PubMed PMID: 28722828.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioaccumulation-based silver nanoparticle toxicity in Daphnia magna and maternal impacts. AU - Pakrashi,Sunandan, AU - Tan,Cheng, AU - Wang,Wen-Xiong, Y1 - 2017/08/23/ PY - 2017/05/02/received PY - 2017/06/13/revised PY - 2017/07/13/accepted PY - 2017/7/20/pubmed PY - 2017/12/5/medline PY - 2017/7/20/entrez KW - Bioaccumulation KW - Daphnia KW - Maternal transfer KW - Silver nanoparticle KW - Toxicity SP - 3359 EP - 3366 JF - Environmental toxicology and chemistry JO - Environ Toxicol Chem VL - 36 IS - 12 N2 - In the present study, we tested whether bioaccumulation in specific tissues of Daphnia magna could explain silver nanoparticle (AgNP) toxicity. Daphnids were exposed to different concentrations of well-suspended AgNPs and AgNO3 . The accumulations of Ag in the whole body, gut, and nongut tissues, as well as the mortality of daphnids, were recorded over a period of 7 d. Regression analysis showed a higher degree of positive correlation between the concentration of Ag in the nongut tissues than gut tissues and the mortality of daphnids. The results strongly suggested that the toxicity of AgNPs could be better explained in terms of bioaccumulation of AgNPs in the nongut tissues. We further tested the maternal transfer of AgNPs in daphnids into the next generation using radioactive tracers, which were able to detect as low as 1.0 to 3.2% of total accumulated Ag transferred to the neonates. The AgNPs significantly affected the reproduction process during the first 2 broods after exposure, whereas AgNO3 only had significant effects on the first brood. It is possible that AgNPs have longer adverse effects than AgNO3 on the reproduction of Daphnia. The present study identified the sensitive site of AgNP toxic action in daphnids and documented the extent of maternal transfer and the significant influence of AgNPs on the reproduction of daphnids. Environ Toxicol Chem 2017;36:3359-3366. © 2017 SETAC. SN - 1552-8618 UR - https://www.unboundmedicine.com/medline/citation/28722828/Bioaccumulation_based_silver_nanoparticle_toxicity_in_Daphnia_magna_and_maternal_impacts_ L2 - https://doi.org/10.1002/etc.3917 DB - PRIME DP - Unbound Medicine ER -
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