Shipping can be achieved but cargo arrives with damage - titanium dioxide nanoparticles affect the DNA of Pacific oyster sperm.
Aquat Toxicol
; 258: 106446, 2023 May.
Article
em En
| MEDLINE
| ID: mdl-36907145
ABSTRACT
Titanium dioxide nanoparticles (TiO2 NP) were reported to be reprotoxic in humans and fish. However, the effects of these NP on the reproduction of marine bivalves, namely oysters, remain unknown. Thus, a short-term (1â¯h) direct exposure of sperm of the Pacific oyster (Crassostrea gigas) to two TiO2 NP concentrations (1 and 10â¯mg.L-1) was performed, and sperm motility, antioxidant responses, and DNA integrity were evaluated. Although no changes occurred in sperm motility and the activities of the antioxidants, the genetic damage indicator increased at both concentrations, demonstrating that TiO2 NP affects the DNA integrity of oyster sperm. Although DNA transfer can happen, it does not fulfill its biological mission since the transferred DNA is not intact and may compromise the reproduction and recruitment of the oysters. This vulnerability of C. gigas sperm towards TiO2 NP highlights the importance of studying the effects of NPs exposure to broadcast spawners.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Crassostrea
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Nanopartículas
Limite:
Animals
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Humans
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Male
Idioma:
En
Revista:
Aquat Toxicol
Ano de publicação:
2023
Tipo de documento:
Article