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Cardiotoxicity and lung toxicity in male rats induced by long-term exposure to iron oxide and silver nanoparticles.

Abstract：

:Engineered nanoparticles (NPs) have been increasingly used in numerous fields over the last decade. In particular, iron oxide NPs (Fe2O3NPs) and silver NPs (AgNPs) have contributed to the current increase in NP usage. However, the possible side effects of increased NP exposure remain not fully elucidated. The present study aimed to assess the toxic effects of Fe2O3NPs and AgNPs, both individually and in combination, on the heart and lungs of male rats. To evaluate the in vivo NP toxic effects, the experimental animals were orally administered with Fe2O3NPs (5 mg/kg) and/or AgNPs (50 mg/kg). Animals were treated every day for 79 days. The results demonstrated that at the molecular level, Fe2O3NPs and AgNPs caused marked DNA base oxidation as indicated by the elevated DNA content of 8-hydroxy-2-deoxyguanosine in the heart and lungs. Fe2O3NPs and/or AgNPs decreased paraoxonase 1, antioxidant enzymes, total antioxidant capacity, and reduced glutathione in heart and lung. A dose-dependent increase in production of creatine kinase, thiobarbituric acid-reactive substances, nitric oxide end products, tumor necrosis factor-α, interleukin-6 and lipid profiles was detected. Histological changes were also evident in heart and lung tissues. The two NPs demonstrated similar toxic effects for the majority of factors when co-supplemented. In conclusion, the present study identified that Fe2O3NPs and AgNPs, alone and in combination, induced cardiotoxicity and lung toxicity. Furthermore, findings demonstrated that there was a greater toxic effect due to administration of both NPs compared to individual administration. It was hypothesized that the toxic effects may be mediated through the induction of oxidative DNA damage, lipid peroxidation, shifting redox status, disrupted gene expression, and deregulation in cytokine production.

journal_name

Exp Ther Med

journal_title

Experimental and therapeutic medicine

authors

Yousef MI,Abuzreda AA,Kamel MA

doi

10.3892/etm.2019.8108

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

4329-4339

issue

eissn

1792-0981

issn

1792-1015

pii

ETM-0-0-8108

journal_volume

pub_type

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Cardiotoxicity and lung toxicity in male rats induced by long-term exposure to iron oxide and silver nanoparticles.