PUBLICATION
Exposure to copper nanoparticles causes gill injury and acute lethality in zebrafish (Danio rerio)
- Authors
- Griffitt, R.J., Weil, R., Hyndman, K.A., Denslow, N.D., Powers, K., Taylor, D., and Barber, D.S.
- ID
- ZDB-PUB-080209-5
- Date
- 2007
- Source
- Environmental science & technology 41(23): 8178-8186 (Journal)
- Registered Authors
- Keywords
- none
- MeSH Terms
-
- Animals
- Cluster Analysis
- Copper/toxicity*
- Estrogens/toxicity
- Gene Expression Profiling
- Gene Expression Regulation/drug effects
- Gills/drug effects*
- Gills/metabolism
- Microscopy, Electron, Scanning
- Nanoparticles/toxicity*
- Nanoparticles/ultrastructure
- Water Pollutants, Chemical/toxicity
- Zebrafish
- PubMed
- 18186356 Full text @ Env. Sci. Tech.
Citation
Griffitt, R.J., Weil, R., Hyndman, K.A., Denslow, N.D., Powers, K., Taylor, D., and Barber, D.S. (2007) Exposure to copper nanoparticles causes gill injury and acute lethality in zebrafish (Danio rerio). Environmental science & technology. 41(23):8178-8186.
Abstract
Increasing use of metallic nanomaterials is likely to result in release of these particles into aqueous environments; however, it is unclear if these materials present a hazard to aquatic organisms. Because some dissolution of metal particles will occur, it is important to distinguish effects of nanoparticulates from dissolved metals. To address this issue, acute toxicity of soluble copper and 80 nm copper nanoparticle suspensions were examined in zebrafish. The results demonstrate that nanocopper is acutely toxic to zebrafish, with a 48 h LC50 concentration of 1.5 mg/L. Rapid aggregation of copper nanoparticles occurred after suspension in water, resulting in 50-60% of added mass leaving the water column. While dissolution of particulate copper occurred, it was insufficient to explain the mortality in nanocopper exposures. Histological and biochemical analysis revealed that the gill was the primary target organ for nanocopper. To further investigate the effects of nanocopper on the gill, zebrafish were exposed to 100 microg/L of nanocopper or to the concentration of soluble copper matching that present due to dissolution of the particles. Under these conditions, nanocopper produced different morphological effects and global gene expression patterns in the gill than soluble copper, clearly demonstrating that the effects of nanocopper on gill are not mediated solely by dissolution.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping