Effects of surface gastric pacing on gastric myoelectrical activity and plasma motilin in a canine model of gastric motility disorders

• Published in: Chinese journal of digestive diseases 2004-04, Vol.5 (2), p.56-63
• Main Authors: Yang, Min, Fang, Dian Chun, Wang, Rong Quan, Yang, Shi Ming, Long, Qing Lin, Li, Qian Wei, Sun, Nian Xu, Gan, Lu
• Format: Article
• Language: English
• Subjects: Animals; Disease Models, Animal; Dogs; Electric Stimulation; Fasting - physiology; Female; gastric myoelectrical activity; gastric pacing; Gastrointestinal Motility - drug effects; glucagon; Glucagon - pharmacology; Male; motilin; Motilin - blood; Stomach - drug effects; Stomach - innervation; Stomach - physiology; vagotomy
• ISSN: 1443-9611; 1443-9573
• DOI: 10.1111/j.1443-9573.2004.00156.x

OBJECTIVE:  To investigate the effects of surface gastric pacing on gastric myoelectrical activity and plasma motilin concentration in a canine model of gastric motility disorders. METHODS:  Ten healthy mongrel dogs were divided into two groups: an experimental group of six dogs and control group of four dogs. The model of gastric motility disorders was established in the experimental group with truncal vagotomy combined with injection of glucagon. Gastric serosal myoelectrical activity was recorded with a four‐channel computer analysis device. Plasma motilin concentration was measured with a radioimmunoassay (RIA) kit. Surface gastric pacing at 1.1–1.2‐fold the intrinsic slow‐wave frequency superimposed with a series of high frequency pulses (10–30 Hz) was performed for 45 min daily for 1 month in the conscious dogs. RESULTS:  The basic electrical rhythm (BER) amplitude (2.32 ± 0.35 mV) and propagation velocity (4.06 ± 0.40 cm/s) of the dogs with bilateral truncal vagotomy in the fed state decreased more significantly than those of the controls (4.25 ± 0.12 mV, 6.92 ± 0.24 cm/s) (P