Cellulose Nanocrystals as a Drug Delivery System to Improve the Efficiency of Nitazoxanide against Cryptosporidium parvum Infected Mice

Cryptosporidiosis poses several health risks, particularly due to its potential severity and the populations it can affect. Comprehending these hazards is crucial for efficient prevention and treatment. This study was to investigate the efficiency of cellulose nanocrystals (CNC), nitazoxanide (NTZ) and nitazoxanide-cellulose nanocrystals (NTZ-CNC) in treating experimental infected mice of cryptosporidiosis.

A total of 75 male swiss albino mice were allocated into eight groups (5 mice/group) with triplicates of each group. Infection with cryptosporidiosis was conducted with 3000 Cryptosporidium parvum oocysts. All treatments commenced on the initial day of oocyst emergence and persisted for five succeeding days across all groups, except for the negative control group. Oocysts shedding was estimated daily from 1^st till 20 days post treatment. Hematological and blood biochemical analysis, immunoglobulins levels as well as histopathological studies were performed.

It was detected that NTZ-CNC group had the lowest Cryptosporidium oocysts shedding. Also, these treatments induced significant improvements in hematological, blood biochemical, immunoglobulins levels including immunoglobulin G and immunoglobulin M with best improvements recorded in NTZ-CNC treated groups. A remarkable amelioration of the intestinal histopathological lesions was observed, especially in NTZ-CNC treated group. In conclusion, this study reported that CNC could significantly enhance the therapeutic effects of NTZ, making it a promising treatment for cryptosporidiosis due to its potent anti-parasitic and anti-inflammatory capabilities.