Document Detail


In vivo biomodification of lipid-coated carbon nanotubes by Daphnia magna.
MedLine Citation:
PMID:  17533874     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study examined the interactions between Daphnia magna and a water-soluble, lysophophatidylcholine coated single-walled carbon nanotube. D. magna were able to ingest the nanotubes through normal feeding behavior and utilize the lysophophatidylcholine coating as a food source. D. magna were able to modify the solubility of the nanotube, likely through digestion of the lipid coating. This study provides evidence of biomodification of a carbon-based nanomaterial by an aquatic organism. The modification significantly altered the physical properties of the nanomaterial in freshwater. Acute toxicity was observed only in the highest test concentrations. These are important findings related to determining the behavior and potential toxicity of coated nanomaterials released into the environment.
Authors:
Aaron P Roberts; Andrew S Mount; Brandon Seda; Justin Souther; Rui Qiao; Sijie Lin; Pu Chun Ke; Apparao M Rao; Stephen J Klaine
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Environmental science & technology     Volume:  41     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-05-30     Completed Date:  2007-06-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3025-9     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, University of North Texas, Denton, Texas 76203, USA.
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MeSH Terms
Descriptor/Qualifier:
Algae
Animals
Daphnia / drug effects,  metabolism*
Environmental Monitoring
Feeding Behavior / physiology
Lipids / chemistry*
Lysophosphatidylcholines / metabolism
Nanotubes, Carbon / chemistry*,  toxicity
Solubility
Water Pollutants, Chemical / chemistry,  toxicity
Chemical
Reg. No./Substance:
0/Lipids; 0/Lysophosphatidylcholines; 0/Nanotubes, Carbon; 0/Water Pollutants, Chemical
Comments/Corrections
Comment In:
Environ Sci Technol. 2007 Apr 15;41(8):2657-8   [PMID:  17533819 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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