Effects of motilin and ursodeoxycholic acid on gastrointestinal myoelectric activity of different origins in fasted rats

Table 1 MMC characteristics in 24 normal rats

MMC characteristics	mean ± SD
MMC cycle duration/s	746 ± 140a
Duration of phase III/s	214 ± 53a
Amplitude of phase III/μV	287 ± 23a
Frequency of phase III/(bursts/min)	11.4 ± 0.3

Values are shown for duodenum.

^aP < 0.05 vs between subjects.

Table 2 MMC characteristics of different origin of ongoing phase III (n = 24, mean ± SD)

MMC characteristics	After phase III of antral origin	After phase III of duodenal origin
MMC cycle duration/s	901 ± 74	667 ± 91a
Duration of phase III/s	271 ± 30	186 ± 35a
Amplitude of phase III/μV	292 ± 17	284 ± 25
Frequency of phase III/(bursts/min)	11.2 ± 0.5	11.6 ± 0.2

Values are shown for duodenum.

^aP < 0.05 vs antral.

Table 3 Effects of UDCA on the interdigestive gastrointestinal myoelectric activity (n = 8, mean ± SD)

MMC characteristics	Antrum		Duodenum
	Before	After	Before	After
The number of MMC	7	11	11	21
MMC cycle duration/s	885 ± 106	800 ± 48a	780 ± 45	602 ± 78a
Duration of phase III/s	161 ± 13	113 ± 19a	156 ± 9	241 ± 20a
Amplitude of phase III/μV	297 ± 11	284 ± 20	288 ± 22	285 ± 19
Frequency of phase III/(bursts/min)	3.1 ± 0.5	3.2 ± 0.6	11.2 ± 1.6	11.5 ± 1.8

^aP < 0.05 vs before treatment.