Azelastine nasal spray inhibiting sympathetic function on human nasal mucosa in patients with allergy rhinitis

Li Hsiang Cheng, Jih Chin Lee, Pei Chuan Wu, Yuan Yung Lin, Yueng Hsiang Chu, Hsing Won Wang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Background: Azelastine hydrochloride (azelastine) nasal spray is a histamine receptor-1 (H1) antagonist often used in treating allergic rhinitis to relieve its symptoms. However, the effects of azelastine to influence decongestion on human nasal mucosa in patients with allergic rhinitis are not yet fully explored and merit further exploration. The effects of azelastine on the vasocontrac-tile responses generated by smooth muscles in the vascular structures of human nasal mucosa were investigated directly in vitro. Methods: We examined the effectiveness of azelastine on isolated human nasal mucosa by testing: 1) the effect on mucosa resting tension; 2) the effect on mucosal contraction caused by 10-6 M methoxamine as a sympathetic mimetic; 3) the effect of the drugs on electrically induced mucosal contractions. Results: The results indicated that addition of methoxamine to the incubation medium caused the nasal mucosa to contract in a dose-dependent manner. Addition of azelastine at doses of 10–6 M or above elicited a significant dilation response to 10–6 M methoxamine-induced mucosal contraction. Azelastine could inhibit electrical field stimulation-induced spike mucosal contraction. Moreover, increase in concentration of azelastine had minimal effect on basal tension of nasal mucosa. Conclusions: The technique in our study is simple and reproducible. Azelastine could inhibit both EFS and methoxamine-induced nasal mucosal contractions in vitro. This study highlights that although azelastine nasal spray is often used in treating allergic rhinitis to improve symptoms, nasal obstruction may be not relieved immediately due to the anti-sympathetic effect of azelastine.

Original languageEnglish
Pages (from-to)268-272
Number of pages5
Issue number4
Publication statusPublished - 2019


  • Allergic rhinitis
  • Azelastine
  • Human
  • In vitro study
  • Nasal mucosa
  • Nasal obstruction

ASJC Scopus subject areas

  • Otorhinolaryngology


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