Investigation of the Enzyme activities of Alkaline Phosphatase, Lactate Dehydrogenase, Transaminase and Histopathological Changes of Liver after Exposure to NiO and NiO Nanoparticles in Rats

Introduction: Nickel (Ni) and nickel compounds are widely used in industry, radiotherapy and nanomedicine. However, the toxicity of NiO nanoparticles is yet to be fully elucidated. In this study, we evaluated the toxicity of NiO and NiO nanoparticles (NiONPs) using basic medical diagnostic tools, such as biochemical tests and histopathological changes of liver in rats. Methods: In this experimental study, 49 male rats were divided randomly into seven groups (n=7), including one control group and six experimental groups (three experimental groups received NiONPs and three experimental groups received NiO intraperitoneally) with doses of 10, 25 and 50 mg/kg for 8 days. After 8 days, blood samples were collected from heart and liver enzyme activity assay was performed on serum sample. Livert issue for histopathological evaluation were stained with hematoxylin and eosin. Data were analyzed using ANOVA and Tukey test with SPSS21 software at significant level of P