In vitro and in vivo effects of green synthesized silver nanoparticles against Giardia lamblia infection
Publish place: Archives of Razi Institute journal، Vol: 79، Issue: 1
Publish Year: 1403
نوع سند: مقاله ژورنالی
زبان: English
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JR_ARCHRAZI-79-1_023
تاریخ نمایه سازی: 19 اردیبهشت 1403
Abstract:
The current experimental study designed to examine the in vitro and in vivo effects of green synthesized silver nanoparticles (AgNPs) against G. lamblia as one of the main causes of parasitic diarrhea. The precipitation method was used to green synthesis of AgNPs by Astragalus ecbatanus aqueous extract. In vitro assay was performed on G. lamblia cysts and trophozoites after exposure with AgNPs at ۱۰, ۲۰, and ۴۰ mg/mL for ۱۰–۳۶۰ min. Effects of AgNPs on trophozoite plasma membrane and their cytotoxic effects on normal and colon cancer cells were assessed by Sytox green and cell viability MTT assay. For thein vivo assay, BALB/c mice infected by Giardia, were treated with AgNPs at ۱۰, ۱۵, and ۲۰ mg/kg/day for one week. On the ۸th day post-infection, stool exam was performed to check the Giardia cysts presence and the reduction rate. The AgNPs were in the range between ۵ and ۸۰ nm, and the maximum distribution of particlesize was observed at ۴۰–۶۰ nm. AgNPs markedly (p<۰.۰۰۱) increased the mortality of G. lamblia trophpzoites as a dose-dependent reaction; AgNPs at ۲۰۰ and ۳۰۰ μg/mL destroyed G. lamblia cysts after ۴ and ۲ h, respectively. Trophozoites of G. lamblia were more sensitive to AgNPs than cysts, whereas, AgNPs at ۱۰۰, ۲۰۰, and ۳۰۰ μg/mL killed all trophozoites after ۴, ۲, and ۱ h of treatment, respectively. AgNPs dose-dependently dropped (p<۰.۰۰۱) the parasite load and viability of cysts of G. lamblia. Exposure of G. lamblia trophozoites with AgNPs dose-dependently increased the plasma membrane permeability of trophozoites via rising the exposed fluorescence. The CC۵۰ value AgNPs for colon cancer and normal cell lines was ۴۰۲.۳ μg/mL and ۸۱۹.۶ μg/mL, respectively. The selectivity value greater than ۲ (۲.۰۴) implies that this AgNPs is safe for normal cells compared to cancer cells. This experimental study showed that AgNPs green synthesized by A. ecbatanus displayed considerable in vitro and in vivo anti-Giardia activity and can accordingly a candidate for Giardia infection treatment. Nonetheless, farther researches on the accurate mechanisms of action as well as clarifying all toxicity aspects of the type of AgNPs must be considered.
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Authors
Sara Golabi Azad
Faculty of Pharmacy, Eastern Mediterranean University, Famagusta, North Cyprus
Hasip Cem Özyurt
Faculty of Pharmacy, Eastern Mediterranean University, Famagusta, North Cyprus
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