JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Add like
Add dislike
Add to saved papers

Genotoxicity analysis of cerium oxide micro and nanoparticles in Wistar rats after 28 days of repeated oral administration.

Mutagenesis 2014 November
The applications of cerium oxide nanoparticles (CeO2 NPs; nanoceria) extend to polishing agents, diesel fuel additives and as a putative antioxidant in therapeutics. Therefore, understanding the long-term toxic effects of CeO2 NPs is of particular importance. This study investigated the 28 days of repeated toxicity of 30, 300 and 600 mg/kg body weight (bw)/day of nanoceria and CeO2 microparticles (MPs) in Wistar rats after oral exposure. Genotoxicity was analysed using comet, micronucleus (MN) and chromosomal aberration (CA) assays. The results demonstrated a significant increase in DNA damage in peripheral blood leukocytes and liver, MN and CA in bone marrow as well as MN in peripheral blood after exposure to CeO2 NPs at 300 and 600 mg/kg bw/day. Significant alterations were observed in alkaline phosphatase and lactate dehydrogenase activity in serum and reduced glutathione content in the liver, kidneys and brain at 300 and 600 mg/kg bw/day in a dose-dependent manner. Conversely, CeO2 MPs did not induce any significant toxicological changes. A much higher absorptivity and significant tissue distribution of CeO2 NPs was perceived in comparison to CeO2 MPs in a dose-dependent manner. A substantial fraction of CeO2 NPs was cleared by urine and faeces. Histopathological analysis revealed that CeO2 NPs caused alterations in liver, spleen and brain. Further, distinct difference in the data among genders was not obvious. In general, the results suggested that prolonged oral exposure to nanoceria has the potential to cause genetic damage, biochemical alterations and histological changes after retention in vital organs of rats at high concentrations.

Full text links

We have located links that may give you full text access.
Can't access the paper?
Try logging in through your university/institutional subscription. For a smoother one-click institutional access experience, please use our mobile app.

For the best experience, use the Read mobile app

Mobile app image

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app

All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.

By using this service, you agree to our terms of use and privacy policy.

Your Privacy Choices Toggle icon

You can now claim free CME credits for this literature searchClaim now

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app