Table 1.
Mean bladder pressures during open-outlet, conscious cystometry before and after Ki-8751 infusion in no CYP control, acute CYP, and chronic CYP male and female rats
| Threshold Pressure, cmH2O | Minimum Pressure, cmH2O | Average Pressure, cmH2O | Maximum Pressure, cmH2O | |
|---|---|---|---|---|
| Female rats | ||||
| Control | ||||
| Before Ki-8751 | 13.2 ± 0.9 | 10.2 ± 0.8 | 13.1 ± 1.3 | 35.5 ± 3.8 |
| After Ki-8751 | 14.1 ± 0.9 | 8.4 ± 0.3 | 12.0 ± 0.5 | 36.5 ± 3.6 |
| 4-h CYP | ||||
| Before Ki-8751 | 21.0 ± 3.7 | 16.7 ± 3.0 | 19.0 ± 3.2 | 43.9 ± 5.9 |
| After Ki-8751 | 18.6 ± 3.1 | 14.4 ± 2.5 | 16.6 ± 2.7 | 41.0 ± 6.2 |
| Chronic CYP | ||||
| Before Ki-8751 | 37.4 ± 7.2 | 25.6 ± 6.2 | 30.2 ± 6.7 | 71.5 ± 9.7 |
| After Ki-8751 | 36.8 ± 5.0 | 22.5 ± 3.9 | 28.1 ± 4.7 | 73.5 ± 6.7 |
| Male rats | ||||
| Control | ||||
| Before Ki-8751 | 12.8 ± 1.1 | 9.0 ± 0.8 | 11.4 ± 1.1 | 40.9 ± 3.6 |
| After Ki-8751 | 12.6 ± 0.9 | 8.3 ± 1.0 | 10.5 ± 1.0 | 35.3 ± 3.7 |
| 4-h CYP | ||||
| Before Ki-8751 | 16.3 ± 0.3 | 12.6 ± 0.4 | 14.3 ± 0.4 | 41.2 ± 2.1 |
| After Ki-8751 | 16.2 ± 1.0 | 11.3 ± 0.5 | 13.9 ± 0.6 | 40.0 ± 2.3 |
| Chronic CYP | ||||
| Before Ki-8751 | 32.3 ± 2.5 | 23.0 ± 2.2 | 26.6 ± 2.3 | 61.8 ± 3.4 |
| After Ki-8751 | 22.7 ± 1.1† | 13.6 ± 1.1† | 16.3 ± 1.3* | 52.7 ± 4.2 |
Values are means ± SE; n = 6–8 rats/group. CYP, cyclophosphamide. A paired, two-tailed Student’s t-test was used to compare urinary bladder pressure parameters before versus after infusion of Ki-8751. Significant difference between before and after Ki-8751 infusion:
P ≤ 0.05 and
P ≤ 0.01.