Table 3.
Effect of progesterone on the mean contractile amplitude of body after indomethacin or phentolamine pretreatment in rats
| Gastric body muscle |
Contractile amplitude/mm |
|||||||||
|
Pr |
I + Pr |
Ph + Pr |
||||||||
| B | C | B | C | B | C | B | C | B | C | |
| LM | 12.0 ± 16.9 | -7.5 ± 5.5b | 12.9 ± 17.1 | -0.1 ± 6.0 | 12.5 ± 18.4 | -8.2 ± 6.9b | 12.1 ± 19.2 | 1.4 ± 3.8 | 15.4 ± 16.5 | -5.2 ± 4.5d |
| CM | 11.8 ± 12.9 | -5.6 ± 3.0b | 12.2 ± 14.0 | 1.2 ± 5.2 | 12.6 ± 13.2 | -3.5 ± 2.5d | 11.7 ± 12.6 | 0.2 ± 0.5 | 11.4 ± 13.0 | -3.6 ± 2.7d |
Phentolamine (1 µmol·L-1) or indomethacin (10 µmol·L-1) was added 3 min before the addition of progesterone (50 µmol·L-1). x- ± s, n = 12. Pr: Progesterone, I: Indomethacin, Ph: Phentolamine.
b
P < 0.001 vs corresponding B by paired t test;
d
P < 0.01 vs Pr alone by two samples mean t test.