Effects of in vitro exposure to titanium dioxide on DNA integrity of bottlenose dolphin (Tursiops truncatus) fibroblasts and leukocytes.
Mar Environ Res
; 100: 68-73, 2014 Sep.
Article
en En
| MEDLINE
| ID: mdl-24484603
In the present study, the genotoxic potential of nanosized TiO2 anatase and micro-sized rutile on bottlenose dolphin (Tursiops truncatus) fibroblasts and leukocytes was investigated. Human and mouse cells were also studied in order to compare susceptibility to TiO2 in different mammalian species. Cell lines were exposed for 4, 24, and 48 h to different concentrations of TiO2 (20, 50, 100, 150 µg/ml) and DNA damage was investigated by single cell gel electrophoresis (Comet assay). Both anatase and rutile induced increased DNA damage, even though statistically significant effects were scattered according to species and cell lines. Bottlenose dolphin leukocytes and murine fibroblasts exhibited increased DNA damage after rutile exposure at some doses/times, while human fibroblasts showed a significant dose-response effect after a 4 h exposure to anatase. Human leukocytes were tolerant to both anatase and rutile. Ultrastructural investigation showed that TiO2 particles entered the cell and were compartmentalized within membrane-bound vesicles.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Titanio
/
Contaminantes Químicos del Agua
/
Daño del ADN
/
Exposición a Riesgos Ambientales
/
Delfín Mular
/
Nanopartículas del Metal
Límite:
Animals
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Mar Environ Res
Asunto de la revista:
BIOLOGIA
/
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2014
Tipo del documento:
Article
País de afiliación:
Italia
Pais de publicación:
Reino Unido