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  • Title: THE ACTION OF TRIETHYLCHOLINE ON THE PERISTALTIC REFLEX OF THE GUINEA-PIG ILEUM.
    Author: BOULLIN DJ.
    Journal: Br J Pharmacol Chemother; 1963 Aug; 21(1):208-14. PubMed ID: 14066147.
    Abstract:
    The action of triethylcholine on the peristaltic reflex of the guinea-pig isolated ileum has been studied. When perfused through the lumen in low concentrations triethylcholine first stimulated and then inhibited peristalsis. High concentrations gradually inhibited or abolished the reflex without prior stimulation. These inhibitory effects were reversed by choline, in the continued presence of triethylcholine. Similar responses followed application of triethylcholine to the serosal surface of the gut, except that high concentrations produced an immediate abolition of peristalsis which was not restored by choline. It is suggested that the effects of intraluminal triethylcholine are due either to enhancement of acetylcholine release or to reduction of acetylcholine synthesis, or to a combination of these factors, and that the results are evidence that acetylcholine is a humoral transmitter involved in the initiation of peristalsis.
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