TY - SER AU - Shalaby,Omnia E. AU - Ahmed,Yasmine H. AU - Mekkawy,Aya M. AU - Elbargeesy,G.A. TI - Ultrastructural study on the hepatoprotective effect of selenium-loaded chitosan nanoparticles against silver nanoparticles-induced toxicity in the female albino rats PY - 2023/// KW - Metal nanoparticles KW - Selenium compounds KW - Hepatotoxicology N1 - Includes references N2 - Silver nanoparticles (Ag-NPs) are increasingly used in industrial and biological applications. There are growing worries regarding their toxicity to both humans and animals. Selenium-loaded chitosan nanoparticles (CS-SeNPs) have strong antioxidant properties via scavenging free radicals. The aim of this study is to assess the protective effect of CS-SeNPs against Ag-NPs' damaging effects on the hepatic tissue of adult female rats. Forty female albino rats were separated into four groups: group I (control) was given distilled water (0.5 ml/kg), group II was administered Ag-NPs (100 mg/kg), group III was co-exposed with Ag-NPs (100 mg/kg) and CS-SeNPs (0.5 mg/kg) and group IV received only CS-SeNPs (0.5 mg/kg) daily by oral gavage. After 60 days, rats were euthanized, then hepatic tissues were collected and fixed in 5% glutaraldehyde for transmission electron microscopy. Exposure to Ag-NPs induced severe degeneration of the hepatocytes, in the form of complete lysis and disappearance of the cytoplasmic organelles. While supplementation with CS-SeNPs exhibited a partial disappearance of most degenerative changes induced by Ag-NPs. In conclusion, Ag-NPs induce some destructive effects on the hepatic tissue and CS-SeNPs can ameliorate most of these harmful effects. Keywords: Silver nanoparticles; Selenium-loaded chitosan nanoparticles; Hepatotoxicity; Ultrastructure UR - http://nile.enal.sci.eg/cgi-bin/koha/opac-retrieve-file.pl?id=33b2476b5f5fb515bdab921074e6b0c0 ER -