Arsenic exposure disrupts neurite growth and complexity in vitro.
Neurotoxicology
; 30(4): 529-37, 2009 Jul.
Article
en En
| MEDLINE
| ID: mdl-19635389
ABSTRACT
Arsenic has neurotoxic effects on both central and peripheral components of the mature nervous system. There is increasing evidence that exposure to arsenic is also toxic to the developing nervous system and can result in decreased cell division and increased apoptosis in cultured developing neurons. However, the effects of arsenic on subsequent neuron growth and morphology remain unclear. In the present study we used differentiating PC12 cells to investigate the effects of sodium arsenite on the early stages of neurite production and growth. We find that arsenic has concentration- and time-dependent effects on initial neurite outgrowth in vitro. Exposure to low micromolar levels of sodium arsenite for five days results in reduced neurite production, outgrowth and complexity in newly differentiating PC12 cells. Furthermore, we find that exposure of more mature PC12 cells to arsenite can inhibit further neurite development. These results suggest that exposure to arsenic can disrupt early stages of neuron differentiation by altering the normal progression of morphological development and could potentially contribute to compromised long term functioning of neurons.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
2_ODS3
Problema de salud:
2_quimicos_contaminacion
Asunto principal:
Arseniatos
/
Neuritas
/
Contaminantes Ambientales
/
Neuronas
Límite:
Animals
Idioma:
En
Revista:
Neurotoxicology
Año:
2009
Tipo del documento:
Article
País de afiliación:
Estados Unidos