Nanoplastics causes extensive congenital malformations during embryonic development by passively targeting neural crest cells.
Environ Int
; 173: 107865, 2023 03.
Article
en En
| MEDLINE
| ID: mdl-36907039
Nanomaterials are widespread in the human environment as pollutants, and are being actively developed for use in human medicine. We have investigated how the size and dose of polystyrene nanoparticles affects malformations in chicken embryos, and have characterized the mechanisms by which they interfere with normal development. We find that nanoplastics can cross the embryonic gut wall. When injected into the vitelline vein, nanoplastics become distributed in the circulation to multiple organs. We find that the exposure of embryos to polystyrene nanoparticles produces malformations that are far more serious and extensive than has been previously reported. These malformations include major congenital heart defects that impair cardiac function. We show that the mechanism of toxicity is the selective binding of polystyrene nanoplastics nanoparticles to neural crest cells, leading to the death and impaired migration of those cells. Consistent with our new model, most of the malformations seen in this study are in organs that depend for their normal development on neural crest cells. These results are a matter of concern given the large and growing burden of nanoplastics in the environment. Our findings suggest that nanoplastics may pose a health risk to the developing embryo.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Cardiopatías Congénitas
/
Cresta Neural
Tipo de estudio:
Etiology_studies
/
Prognostic_studies
Límite:
Animals
/
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
Environ Int
Año:
2023
Tipo del documento:
Article
País de afiliación:
Países Bajos
Pais de publicación:
Países Bajos