ABSTRACT
[Objective] To establish a determination method for isolated gastrointestinal intra-cavity perfusion pressure and to explore its application in pharmacological experiment. [Methods] Determination method for isolated gastrointestinal intra-cavity perfusion pressure was established according to motility of the isolated rat gastric muscle strip and water-sac perfusion manometry and ileum peristalsis of Guinea pigs. Intra-cavity pressure of isolated gastrointestinal canal of rat and guinea pig was observed. [Results] Gastric intra-cavity pressure was markedly increased as added with various doses of acetylcholine (1.25, 2.5, 3.25, 5, 6.25 and 7.5 ?g/mL respectively) in nutrient solution. The ileum intra-cavity pressure was also increased as added with various doses of histamine (0.125, 0.25, and 0.5 ?g/mL respectively) . The effects were in a dose-effect manner and the differences were significant as compared with distilled water group ( P
ABSTRACT
The Qirongrunchang Mixture(QRRCM)is a prescription composed of Radix Astragali,Fructus Cannabis,etc.It is effective for habitual constipa- tion and constipation in the aged and the debilitated,It was shown in this study that oral administration of this mixture could accelerate the intestinal movement in mice with yang-deficiency in a dose-dependent manner,and exerted a cathartic effect on mice with eonstipation.It increased the volume of intestinal content in rabbits,but did not influence the absorption of water in the intestines.