Characteristics of long distance contraction in rat colon in different conditions

Objective: To explore the features of long distance contraction (LDC) of rat colon in different conditions. Methods: Forty rats were divided randomly and equally into three groups. Group 1: YE group, giving yeast extract (YE) and Normal Saline (NS) respectively in 3 consecutive days through gavage administration acutely; Group 2: TTX and bethanechol group, after TTX administration, adding bethanechol to stimulate myogenic components to generate …