Nanoparticles (NPs) offer a great possibility for biomedical application, not only to deliver pharmaceutics, but also to be used as novel diagnostic and therapeutic approaches. Currently, there are no data available regarding to what extent the degree of the toxicity and the accumulation of gold nanoparticles (GNPs) are present in in vivo model. The aim of this study was to assess the effects, after oral administration, of poly-ethylene-glycol (PEG) coated and non-coated GNPs on various hepatotoxicity and oxidative stress markers such as alanine (ALT), aspartate aminotransferases and alkaline phosphatase, lipid hydro peroxide (LHP) in the mouse model. Sprague -Dawley rats were exposed to four different concentrations of PEG-coated and non-coated GNPs (12.5, 25, 50 and 100 mg/kg BW) and a control. Samples were collected 24 hours after the last treatment following standard protocols. Exposure to PEG-coated and non-coated GNPs enhanced the activities of serum amino-transferases (ALT/AST), alkaline phosphatases (ALP) and concentration of lipid hydro peroxide compared to control. However, PEG-coated GNPs demonstrated enhanced hepatotoxic effect than non-coated GNPs. The scientific findings reported here suggest that both GNPs have the potential to induce hepatotoxicity in Sprague-Dawley rats through activation of the mechanisms of oxidative stress at a higher level of exposure. However, more studies to clarify the role of encapsulation in the in vivo toxicity of GNPs, are required and parallel comparison is preferred.

Keywords: gold nanoparticle (GNP), poly-ethylene-glycol, lipid hydroperoxide, serum aminotransferases, alkaline phosphatases, Sprague-Dawley rats, hepatotoxicity.

Citation Format: Anita K. Patlolla, Myeisha Fountain, Paul Tchounwou. Hepatotoxicity and oxidative stress biomarker study of peg-coated and non-coated gold nanoparticles in Sprague-Dawley rats. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 2715. doi:10.1158/1538-7445.AM2015-2715