Action of progesterone on contractile activity of isolated gastric strips in rats

Table 2 Effect of progesterone on the mean contractile amplitude of body and antrum, and the motility index of pylorus in rats

Progesterone µmol·L-1		Contractile amplitude/mm				Motility index/cm.s-1
		Body		Antrum		Pylorus
		LM	CM	LM	CM	CM
5	B	13.4 ± 17.0	12.0 ± 13.2	13.6 ± 8.6	14.1 ± 15.0	92.4 ± 16.2
	C	0.2 ± 0.4	-0.9 ± 3.0	-0.5 ± 0.8a	-0.8 ± 1.7	1.7 ± 4.8
10	B	12.8 ± 17.6	11.2 ± 14.0	14.0 ± 7.1	13.6 ± 12.9	98.5 ± 20.0
	C	-2.1 ± 3.8a	-1.5 ± 1.6b	-1.8 ± 2.0b	-3.1 ± 1.8d	-22.5 ± 16.6d
50	B	12.0 ± 16.9	11.8 ± 12.9	12.6 ± 8.0	12.6 ± 14.8	110.2 ± 22.8
	C	-7.5 ± 5.5a	-5.6 ± 3.0d	-5.4 ± 3.8d	-5.8 ± 3.8d	-47.4 ± 31.2d

B: Basic values in 3 min before addition of progesterone; C: Changes in 3 min after addition of progesterone (The same in Tab 3). x^-± s, n = 12.

^aP < 0.05,

^bP < 0.01,

^dP < 0.001, vs corresponding B by paired t test.