Murine cysticercosis model: Influence of the infection time and the time of treatment on the cysticidal efficacy of albendazole and praziquantel
2015
Palomares-Alonso, Francisca | Palencia Hernández, Guadalupe | Rojas-Tomé, Irma Susana | Jung-Cook, Helgi | Pinzón-Estrada, Enrique
In the search of new alternatives for neurocysticercosis treatment, Taenia crassiceps ORF strain cysticerci have been used instead of T. solium for in vitro studies. Up to date, the main criteria for the use of the murine cysticercosis model for drug efficacy evaluation have not been assessed. The aim of the present study was to evaluate the influence of two of the main variables related to the in vivo efficacy: the length of drug treatment and the starting time of treatment after experimental infection, using albendazole (ABZ) and praziquantel (PZQ) as test drugs. Additionally, the relationship between the number of cysts and the parasite weight was assessed.For the study, female BALB/c mice were experimentally infected with T. crassiceps cysts. Three different post-infection periods (10, 20 and 30 days) and three different lengths of treatment with ABZ or PZQ (10, 20 and 30 days) were selected. The efficacy of each treatment was evaluated by comparison with a control group. Our results show that for in vivo efficacy studies, the best time to start the drug treatment is 10 days post-infection and that a minimum of 20 days of treatment is required when ABZ or PZQ are used as positive control.Moreover, in this model the parasite weight can be used as a rapid tool to measure the in vivo drug activity.
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