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  • Title: Effects of afferent stimulation of the lingual nerve on gastrointestinal motility in the rat.
    Author: Sugimoto M, Yamasato T, Nakayama S.
    Journal: Acta Med Okayama; 1987 Jun; 41(3):89-97. PubMed ID: 3630763.
    Abstract:
    Effects of afferent stimulation of the lingual nerve (LNAS) on gastrointestinal motility and the reflex pathways which mediate the response to LNAS were investigated in rats. LNAS induced excitatory, inhibitory or biphasic responses in the stomach, duodenum and proximal colon. These responses continued after bilateral vagotomy, but were abolished after additional bilateral splanchnicotomy or transection of the spinal cord between Th4 and Th5. The inhibitory, excitatory and biphasic responses induced by LNAS were not affected by decerebration. Both after administration of atropine (0.2 mg/kg, i.v.) and guanethidine (3-5 mg/kg, i.v.), LNAS-induced excitatory and inhibitory responses were abolished in most cases, but the slight inhibitory response in the stomach and duodenum to LNAS remained in a few cases. These results suggest that the reflex centers which cause LNAS-induced excitatory and inhibitory responses are located in the dorsal nucleus of vagus and that the reflex pathways include the vagus and splanchnic nerves.
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