Evaluation of the therapeutic efficacy of albendazole-loaded silver nanoparticles against Echinococcus granulosus infection in experimental mice
2019
Nassef, Nashaat E. | Saad, Abdel-Gawad E. | Harba, Nancy M. | Beshay, Engy V. N. | Gouda, Marwa A. | Shendi, Sawsan S. | Mohamed, Asmaa Shams El-Dein
The drug of choice for treatment of hydatid disease, albendazole (ABZ) is a poorly water-soluble drug; thus, enhancing its solubility is required. Among metal nanoparticles (NPs), silver (Ag) NPs showed antimicrobial efficacies. Therefore, this study was conducted to evaluate nanosilver particles (Ag NPs) free or combined with albendazole against Echinococcus granulosus infection in vivo. In this study, besides the normal control group (GI) (n = 5), 80 mice were infected with 2000 viable protoscoleces intraperitoneally then divided equally (n = 20) into the infected control (GII), ABZ-treated (GIII), nanosilver-treated (GIV) and ABZ-loaded-Ag NPs-treated (GV) groups. On the 90th post-infection day, treatment was started and continued for 8 weeks then the experiment was terminated. Each mouse was subjected to measurement of hydatid cysts’ sizes and weights, serum IFN-γ, liver enzymes; histopathological and transmission electron microscopy studies. In all treated groups, there were significant reductions of hydatid cysts’ sizes and weights; however, the highest efficacy rate (63.9%) was detected in group V associated with obvious ultrastructure alterations of the cysts. The liver tissues of group II showed intense granulomatous reactions, congestion, fibrosis, necrosis and steatosis associated with significant increases in serum IFN-γ and liver enzymes. Interestingly, the best antiparasitic effect and the most significant reduction of IFN-γ towards the normal values were found in GV. Moreover, Ag NPs had reduced the toxic effects of ABZ such as necrosis, steatosis and the elevated serum liver enzymes. Therefore, loading ABZ on Ag NPs could be a potential method to improve ABZ efficacy against hydatid disease.
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