The Posterior Nasal Nerve Plays an Important Role on Cardiopulmonary Reflexes to Nasal Application of Capsaicin, Distilled Water and l-Menthol in Anesthetized Dogs

Arata Kanamaru, Tatsushi Mutoh, Kentaro Kojima, Ryohei Nishimura, Nobuo Sasaki, Masayoshi Kuwahara, Hirokazu Tsubone

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The sensory innervation of the cardiopulmonary reflexes to nasal application of capsaicin (CAPS), distilled water (DW) and l-menthol (LM) was studied in anesthetized dogs breathing through tracheostomy. A marked cardiopulmonary reflex was observed by CAPS and DW into the nasal cavity, while a prolongation of expiration was induced by LM. All these reflexes were significantly decreased by bilateral section of the posterior nasal nerve (PNN) and completely abolished by topical nasal anesthesia with lidocaine. Responses of the whole nerve activity of the PNN to these substances corresponded to the magnitude of the reflexes. These results indicate that PNN afferents play an important role on the reflex elicitation of the noxious, water and cold stimuli from the nasal cavity.

Original languageEnglish
Pages (from-to)85-88
Number of pages4
JournalJournal of Veterinary Medical Science
Volume61
Issue number1
DOIs
Publication statusPublished - 1999 Jan

Keywords

  • Canine
  • Control of breathing
  • Trigeminal nerve afferent

ASJC Scopus subject areas

  • veterinary(all)

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