Details

Autor(en) / Beteiligte

• Bhagat, Jacky
• Zang, Liqing
• Kaneco, Satoshi
• Nishimura, Norihiro
• Shimada, Yasuhito

Titel

Combined exposure to nanoplastics and metal oxide nanoparticles inhibits efflux pumps and causes oxidative stress in zebrafish embryos

Ist Teil von

• The Science of the total environment, 2022-08, Vol.835, p.155436, Article 155436

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• The ubiquity of microplastic/nanoplastics (MP/NPs) provides an opportunity for their interaction with other widely spread environmental contaminants. MP/NP and nanoparticles share a similar transport route from sources, production, and disposal. Metal oxide nanoparticles (nMOx) have varied industrial applications, and limited knowledge is available on their interaction with MP/NPs. The present study investigated the effect of NPs (1 mg/L) on the efflux of two nMOx, aluminium oxide nanoparticles (nAl2O3, 1 mg/L) and cerium oxide nanoparticles (nCeO2, 1 mg/L), and their combined toxicity to zebrafish embryos. The results illustrated increased accumulation of aluminium and cerium in the combined exposure group compared to the nMOx alone treatment. The presence of NPs exacerbated the oxidative stress caused by nAl2O3 and nCeO2, as evidenced by an increase in the concentration of reactive oxygen species (ROS), alteration of antioxidants, and lipid peroxidation. The integrated biomarker response (IBRv2) values showed the induction of an antioxidative response in NP + nAl2O3, whereas a decline in IBRv2 values was observed in NP + nCeO2. Our results indicate that NPs aggravated the accumulation of nMOx and their toxicity. The present work highlights that more attention should be paid to the discharge of these contaminants into the natural environment. [Display omitted] •Nanoplastic (NP) increased the accumulation of aluminium and cerium by inhibiting efflux pump.•NP caused alteration in oxidative stress responses and toxicity of nAl2O3 and nCeO2.•Increased IBRv2 values were observed in NP + nAl2O3 compared to nAl2O3 alone exposure.•NP + nCeO2 showed lower IBRv2 values when compared to nCeO2 alone exposure.•DNA damage and repair-associated gene showed significant differences between groups.