Wittmann T, Crenner F, Felder G, Pousse A, Grenier J F
Eur Surg Res. 1986;18(5):312-7. doi: 10.1159/000128540.
Rats are widely used in intestinal motility studies, but no precise observation has yet been carried out on the organization of motility throughout the whole small bowel of the rat. The aim of this work was to investigate the characteristics of small intestinal motility of the rat using an electromyographic technique. The variables describing the pattern of occurrence of the migrating myoelectric complex (MMC) were studied as well as the relative distribution of the 3 phases within the MMC cycles. The mean duration of the MMC was 20 min on the jejunum, and it increased up to twofold along the ileum. The propagation of the MMCs was regular in the jejunum, but about half the MMCs disappeared along the ileum and did not reach the caecum. The electromyographic characteristics of the jejunum are greatly different from those of the ileum, and the motility of a segment is not representative of the whole small bowel motility. Considering these particularities of intestinal motility, rats differ in many details from other species.
大鼠被广泛用于肠道运动研究，但尚未对大鼠整个小肠的运动组织进行精确观察。这项工作的目的是使用肌电图技术研究大鼠小肠运动的特征。研究了描述移行性肌电复合波（MMC）出现模式的变量，以及MMC周期内三个阶段的相对分布。MMC在空肠的平均持续时间为20分钟，沿回肠增加至两倍左右。MMC在空肠中的传播是规则的，但约一半的MMC在回肠中消失，未到达盲肠。空肠的肌电图特征与回肠有很大不同，一段肠段的运动并不代表整个小肠的运动。考虑到肠道运动的这些特殊性，大鼠在许多细节上与其他物种不同。
