Abstract
This research studied the effects of glycyrrhizic acid (GA) on apoptosis induced with by titanium dioxide (NTiO2) in the liver of rats. It is widely accepted that the contamination resulting from nanoparticles (NPs) is an emerging dangerous issue. Metal oxide nanoparticles have high environmental stability and cause toxicity in the food chain. Thus, the present study investigated the anti-apoptotic effects of glycyrrhizic acid (GA) on the hepatotoxicity generated by titanium dioxide (NTiO2) NPs in the liver tissue. Thirty-two male Wistar rats were randomly divided into four groups. NTiO2-treated rats were given 300 mg / kg of NTiO2 solution via gavage for 14 days; GA-treated were administered 100 mg/kg GA for 14 days; protection group was pre-treated with GA before NTiO2 administration for 7 days. Then, apoptotic index was evaluated through immunolocalization of Bax and Bcl-2 and TUNEL assay. we found that HSCORE of Bax expression and apoptotic index experienced a significant increase with NTiO2 (P <0.001), while Bcl-2 expression significantly diminished in NTiO2-treated rats (P <0.001). The results revealed that the increased Bax expression and apoptotic index were reversed by GA and enhanced the activities of Bcl2. The results revealed that GA effectively attenuated apoptosis against NTiO2 in rats.
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