TABLE 5.
Effects of BKI-1294 treatments on clinical signs, mortality, fertility, and cerebral N. caninum Nc-Spain7 infection in nonpregnant mice, dams, and pupsa
| Parameter | BKI-1294 | Placebo control |
|---|---|---|
| Nonpregnant females (no./total no.) | ||
| Total no. | 6 | 8 |
| Clinical signs | 0/6 | 0/8 |
| Mortality | 0/6 | 0/8 |
| Seropositive | 6/6 | 8/8 |
| N. caninum positive | 1/6b | 8/8 |
| Dams and pups (no./total no.) | ||
| Total no. of dams | 10 | 8 |
| Clinical signs | 2/10c | 5/8 |
| Mortality | 0/10d | 1/8 |
| Seropositive dams | 10/10 | 8/8 |
| N. caninum-positive dams | 3/10b | 8/8 |
| Pregnancy rate | 10/16 | 8/16 |
| Total no. of pups | 58 | 43 |
| Litter size avg (no. of pups/no. of dams) | 58/10d | 43/8 |
| Neonatal mortalitye | 2/58d | 2/43 |
| Postnatal mortalityf | 4/56g | 40/41 |
| N. caninum-positive pups | 9/58g | 43/43 |
Mice were treated with BKI-1294 in corn oil or with corn oil alone as a placebo control, infected with Nc-Spain7, and sacrified as described in Materials and Methods. Adults and surviving pups were tested for the presence of N. caninum in their brains with a specific real-time PCR. Pups that had died before the end of the experiment were considered N. caninum positive. Respective numbers of animals in control and 1294-treated groups were compared by chi-square tests.
P < 0.005.
P < 0.1.
P > 0.1.
Proportion of pups born dead or that died within the 2 first days postpartum.
Proportion of pups dead from days 3 to 30 postpartum.
P < 0.001.