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Related Experiment Videos

Antidromic nerve stimulation accelerates mucociliary activity in rabbit maxillary sinus.

S Lindberg, U Mercke

    Acta Oto-Laryngologica
    |May 1, 1986
    PubMed
    Summary

    Antidromic nerve stimulation accelerates mucociliary activity via substance P (SP) release and acetylcholine. This dual mechanism involves sensory C-fibres and muscarinic receptors, highlighting SP

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    Area of Science:

    • Neuroscience
    • Physiology

    Background:

    • The neuropeptide substance P (SP) is released from sensory C-fibres.
    • Antidromic nerve stimulation can trigger SP release.

    Purpose of the Study:

    • To investigate the effect of antidromic maxillary nerve stimulation on mucociliary (m.c.) activity.
    • To elucidate the mechanisms underlying SP-mediated effects on m.c. function.

    Main Methods:

    • Electrical stimulation of the isolated maxillary nerve.
    • Measurement of m.c. wave frequency in the maxillary sinus using a photoelectric technique.
    • Assessment of responses following atropine pretreatment and SP antagonist administration.

    Main Results:

    • Antidromic stimulation significantly increased m.c. wave frequency by 35.4%.
    • Atropine pretreatment reduced the response, indicating a cholinergic component.
    • SP antagonist abolished the nerve stimulation effect, confirming SP's role.
    • Sympathetic ganglionectomy did not alter the response.

    Conclusions:

    • Antidromic maxillary nerve stimulation enhances m.c. activity through a dual mechanism.
    • This involves the release of substance P (SP) or SP-like peptides from sensory C-fibres.
    • Acetylcholine release also contributes to the accelerated m.c. activity.

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