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Comparative developmental toxicity of iron oxide nanoparticles and ferric chloride to zebrafish (Danio rerio) after static and semi-static exposure.
Pereira, Aryelle Canedo; Gonçalves, Bruno Bastos; Brito, Rafaella da Silva; Vieira, Lucélia Gonçalves; Lima, Emília Celma de Oliveira; Rocha, Thiago Lopes.
Afiliación
  • Pereira AC; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, Goiás, Brazil.
  • Gonçalves BB; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, Goiás, Brazil.
  • Brito RDS; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, Goiás, Brazil.
  • Vieira LG; Department of Morphology, Institute of Biological Sciences, Federal University of Goiás, Goiania, Goiás, Brazil.
  • Lima ECO; Chemistry Institute, Federal University of Goiás, Goiania, Goiás, Brazil.
  • Rocha TL; Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, Goiás, Brazil. Electronic address: thiagorochabio20@ufg.br.
Chemosphere ; 254: 126792, 2020 Sep.
Article en En | MEDLINE | ID: mdl-32957266
Iron oxide nanoparticles (IONPs) are used in several medical and environmental applications, but their mechanism of action and hazardous effects to early developmental stages of fish remain unknown. Thus, the present study aimed to assess the developmental toxicity of citrate-functionalized IONPs (γ-Fe2O3 NPs), in comparison with its dissolved counterpart, in zebrafish (Danio rerio) after static and semi-static exposure. Embryos were exposed to environmental concentrations of both iron forms (0.3, 0.6, 1.25, 2.5, 5 and 10 mg L-1) during 144 h, jointly with negative control group. The interaction and distribution of both Fe forms on the external chorion and larvae surface were measured, following by multiple biomarker assessment (mortality, hatching rate, neurotoxicity, cardiotoxicity, morphological alterations and 12 morphometrics parameters). Results showed that IONPs were mainly accumulated on the zebrafish chorion, and in the digestive system and liver of the larvae. Although the IONPs induced low embryotoxicity compared to iron ions in both exposure conditions, these nanomaterials induced sublethal effects, mainly cardiotoxic effects (reduced heartbeat, blood accumulation in the heart and pericardial edema). The semi-static exposure to both iron forms induced high embryotoxicity compared to static exposure, indicating that the nanotoxicity to early developmental stages of fish depends on the exposure system. This is the first study concerning the role of the exposure condition on the developmental toxicity of IONPs on fish species.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Compuestos Férricos Límite: Animals Idioma: En Revista: Chemosphere Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Compuestos Férricos Límite: Animals Idioma: En Revista: Chemosphere Año: 2020 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido