Genotoxicity and oxidative stress induction by calcium hydroxide, calcium titanate or/and yttrium oxide nanoparticles in mice
- PMID: 37949924
- PMCID: PMC10638389
- DOI: 10.1038/s41598-023-46522-0
Genotoxicity and oxidative stress induction by calcium hydroxide, calcium titanate or/and yttrium oxide nanoparticles in mice
Abstract
Intensive uses of Calcium hydroxide (Ca(OH)2NPs), calcium titanate (CaTiO3NPs) and yttrium oxide (Y2O3NPs) nanoparticles increase their environmental release and human exposure separately or together through contaminated air, water and food. However, too limited data are available on their genotoxicity. Therefore, this study explored the effect of Ca(OH)2NPs, CaTiO3NPs or/and Y2O3NPs administration on the genotoxicityand oxidative stress induction in mice hepatic tissue. Mice were orally administered Ca(OH)2NPs, CaTiO3NPs and Y2O3NPs separately or simultaneously together at a dose level of 50 mg/kg b.w. for two successive weeks (3 days per week). Marked induction of DNA damage noticed after oral administration of Ca(OH)2NPs or CaTiO3NPs alone together with high Ca(OH)2NPs induced reactive oxygen species (ROS) generation and a slight CaTiO3NPs induced ROS production were highly decreased after simultaneous coadministration of administration of Y2O3NPs with Ca(OH)2NPs and CaTiO3NPs up to the negative control level. Oral administration of Y2O3NPs alone also did not cause observable changes in the genomic DNA integrity and the ROS generation level compared to the negative control levels. Similarly, significant elevations in P53 gene expression and high reductions in Kras and HSP-70 genes expression were observed only after administration of Ca(OH)2NPs alone, while, remarkable increases in the Kras and HSP-70 genes expression and non-significant changes in p53 gene expression were noticed after administration of CaTiO3NPs and Y2O3NPs separately or simultaneously together with Ca(OH)2NPs. Conclusion: Ca(OH)2NPs exhibited the highest genotoxic effect through oxidative stress induction and disruption of apoptotic (p53 and Kras) and protective (HSP-70) genes expression. Slight DNA damage was noticed after CaTiO3NPs administration. However, administration of Y2O3NPs alone was non-genotoxic and coadministration of Y2O3NPs with Ca(OH)2NPs and CaTiO3NPs restored genomic DNA integrity and normal expression of apoptotic p53 and protective HSP-70 genes disrupted by Ca(OH)2NPs and CaTiO3NPs. Thus co-administration of Y2O3NPs with Ca(OH)2NPs and CaTiO3NPs is recommended to counter Ca(OH)2NPs and CaTiO3NPs induced genotoxicity and oxidative stress.
© 2023. The Author(s).
Conflict of interest statement
The authors declare no competing interests.
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