• Research Institute of Field Surgery, Daping Hospital, Third Military Medical University, Chongqing 400042;
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Objective  To study the effects of long term application of cathartics on electromyography of rat colon, and to explore the role of interstitial cells of Cajal (ICC) in it.
Methods  Colonic slow waves of the rat was examined after 3-month feeding of phenolphthalein, and ICC in myenteric plexus was observed by ZIO method, and ultrastructure changes of nerves and ICC was observed. Results  The frequency of slow waves of cathartic colon was reduced significantly(P<0.05). The distribution of ICC in myenteric plexus was uneven, and the processes were mussily connected each other. Vacuolar degeneration of axon and ICC-like cells was revealed by electron microscope in myenteric plexus of cathartic colon.
Conclusion  Long term application of phenolphthalein could reduce the frequency of colonic slow waves, and the possible mechanism was degeneration of ICC and myenteric plexus nerves.

Citation: TONG Weidong,ZHANG Shengben,ZHANG Lianyang,et al.. ROLE OF INTERSTITIAL CELLS OF CAJAL IN ELECTROMYOGRAPHY OF CATHARTIC COLON OF RATS. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2000, 7(5): 288-290. doi: Copy