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Acute and Cumulative Effects of Unmodified 50-nm Nano-ZnO on Mice. | LitMetric

Acute and Cumulative Effects of Unmodified 50-nm Nano-ZnO on Mice.

Biol Trace Elem Res

College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, Henan, 471023, People's Republic of China.

Published: September 2018

AI Article Synopsis

Article Abstract

Nanometer zinc oxide (nano-ZnO) is widely used in diverse industrial and agricultural fields. Due to the extensive contact humans have with these particles, it is crucial to understand the potential effects that nano-ZnO have on human health. Currently, information related to the toxicity and mechanisms of nano-ZnO is limited. The aim of the present study was to investigate acute and cumulative toxic effects of 50-nm unmodified ZnO in mice. This investigation will seek to establish median lethal dose (LD50), a cumulative coefficient, and target organs. The acute and cumulative toxicity was investigated by Karber's method and via a dose-increasing method, respectively. During the experiment, clinical signs, mortality, body weights, hematology, serum biochemistry, gross pathology, organ weight, and histopathology were examined. The LD50 was 5177-mg/kg·bw; the 95% confidence limits for the LD50 were 5116-5238-mg/kg·bw. It could be concluded that the liver, kidney, lung, and gastrointestinal tract were target organs for the 50-nm nano-ZnO acute oral treatment. The cumulative coefficient (K) was 1.9 which indicated that the cumulative toxicity was apparent. The results also indicated that the liver, kidney, lung, and pancrea were target organs for 50-nm nano-ZnO cumulative oral exposure and might be target organs for subchronic and chronic toxicity of oral administered 50-nm ZnO.

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Source
http://dx.doi.org/10.1007/s12011-017-1233-6DOI Listing

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