Nanoscale ZnO induces cytotoxicity and DNA damage in human cell lines and rat primary neuronal cells.
J Nanosci Nanotechnol
; 12(3): 2126-35, 2012 Mar.
Article
em En
| MEDLINE
| ID: mdl-22755030
ABSTRACT
The toxic effects of ZnO nanoparticles (nano-ZnO) (1-100 microg/mL) suspended in DMEM were examined in human A549 cells, HepG2 cells, human skin fibroblast cells, human skin keratinocytes, and rat primary neuronal cells for 24 h. Nano-ZnO induced dose dependent cytotoxicity and damaged cell membranes. Cell death was not mediated by reactive oxygen species (ROS) or apoptosis. Nano-ZnO induced DNA damage in rat primary neuronal cells, human fibroblasts, and A549 cells. The cytotoxicity of nano-ZnO in DMEM supplemented with 10% FBS, instead of serum free DMEM, was also examined in the A549 cells, human skin fibroblast cells, and human skin keratinocytes. The levels of cytotoxicity induced were similar to those tested without FBS; in addition, ROS was observed. These results indicate that the cause of cytotoxicity is medium dependent and imply that cellular growth conditions may play a significant role in induction of cytotoxicity and DNA damage by nano-ZnO.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Óxido de Zinco
/
Dano ao DNA
/
Sobrevivência Celular
/
Nanopartículas
/
Neurônios
Limite:
Animals
/
Humans
Idioma:
En
Revista:
J Nanosci Nanotechnol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos