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  • Title: [Role of the vagus nerve in mechanisms of the modulation of afferent duodenal effects].
    Author: Shevelev OA, Bilibin DP, Bugorskiĭ GV, Privalova IL.
    Journal: Biull Eksp Biol Med; 1992 May; 113(5):465-7. PubMed ID: 1421251.
    Abstract:
    The electrostimulation of vagal nerves, the effect of naloxone and atropine on duodenal afferentation by registering evoked potential (EP) at cortex on direct electrostimulation of duodenum have been studied in acute experiments on cats. It has been established that the stimulation of afferent portion of vagal nerves causes the effect of deprivation of EP, whereas the stimulation with certain intensity of efferent portion of vagal nerves intensifies the duodenal afferentation. The effect of afferentation easeness (relief) has been blocked by the application of naloxone 10-20 microgram on duodenal bulbus, but not on it's i. v. injection and without effect on local application of atropine. It is concluded that the role of vagal nerves on the modulation of duodenal nociception is due to the activation of opiate terminals of the efferent vagal nerve portions.
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