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Related Experiment Videos

Is the vidian nerve cholinergic?

R Gadlage, E E Behnke, R T Jackson

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |July 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Electrical stimulation of the vidian nerve causes nasal secretion and vasodilation. Secretory effects are blocked by atropine, but vasodilation is not, suggesting it

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    Area of Science:

    • Neuroscience
    • Physiology
    • Pharmacology

    Background:

    • Electrical stimulation of the parasympathetic (vidian) nerve influences nasal mucosa.
    • Nasal secretion and vasodilation are key responses to vidian nerve stimulation.

    Purpose of the Study:

    • To investigate the mechanisms of nasal secretion and vasodilation induced by vidian nerve stimulation.
    • To differentiate between cholinergic and non-cholinergic pathways in the nasal response.

    Main Methods:

    • Electrical stimulation of the vidian nerve in dogs and cats.
    • Pharmacological blockade of secretory and dilatory responses using varying doses of atropine sulfate.

    Main Results:

    • Low-dose atropine sulfate (0.01 mg/kg) effectively blocked nasal secretion.

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  • High-dose atropine sulfate (1 mg/kg) did not block nasal vasodilation.
  • Vidian nerve composition differs between cats (strong sympathetic component) and dogs (lacks sympathetic component).

    • Conclusions:

    • Nasal vasodilation induced by vidian nerve stimulation is likely not a cholinergic effect.
    • The vidian nerve in cats possesses a significant sympathetic component, unlike in dogs.
    • Human vidian nerve anatomy resembles that of dogs.