Table 3. Assessment of cure by benznidazole (Bz) and posaconazole (Ps), administered in monotherapy or sequential combinations, in a murine model of Trypanosoma cruzi infection1.
Experimental groups | Number of surviving/total number of animals | Number of negative FBE2/number of mice | Number of negative blood PCR3 sample/number of mice | Total of negative assays/number of mice |
Uninfected | 10/10 | 10/10 | 10/10 | 10/10 |
Untreated | 0/10 | 0/10 | ND4 | 0/10 |
Bz 100 mpk4/10 days | 7/7 | 0/7 | ND5 | 0/7 |
Bz 100 mpk/20 days | 10/10 | 8/10 | 7/10 | 7/10 |
Ps 20 mpk/10 days | 6/7 | 0/7 | ND6 | 0/7 |
Ps 20 mpk/20 days | 10/10 | 10/10 | 8/10 | 8/10 |
Bz 100 mpk followed by Ps 20 mpk | 10/10 | 10/10 | 8/10 | 8/10 |
Ps 20 mpk followed by Bz 100 mpk | 10/10 | 3/10 | 3/10 | 3/10 |
Swiss female (n = 10) weight 20 to 24 g were inoculated with 5×103 trypomastigotes (Y strain).
Treatment was initiated at 4th day after inoculation followed by 10 or 20 daily doses and it was being orally administered.
FBE – fresh blood examination performed before and after cyclophosphamide immunossupression.
PCR assay was performed in the 1st and 6th month after treatment.
mpk – milligrams/kilogram/day.
All mice died before 30 days of infection.
All mice had positive results in fresh blood examination.