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  • Title: Effects of hexamethonium and other ganglionic blocking agents on electrical activity of the esophagus induced by vagal stimulation in the dog.
    Author: Toyama T, Yokoyama I, Nishi K.
    Journal: Eur J Pharmacol; 1975 Mar; 31(1):63-71. PubMed ID: 236195.
    Abstract:
    Electrical activity of the dog's esophagus was evoked by electrical stimulation of the vagus nerve and recorded by using a suction electrode placed on the serosal surface of the esophagus. Neuromuscular blocking agents (d-tubocurarine and succinylcholine) blocked this activity, while atropine had no effect. Hexamethonium (in doses which did not effect neuromuscular transmission in the diaphragm) and high doses of nicotine significantly depressed the evoked esophageal electrical activity, while lower doses of nicotine facilitated the response. The results suggest that a certain proportion of the striated muscle of the esophagus is innervated by processes from the intermediate ganglion cells in the Auerbach plexus.
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