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2023 Fiscal Year Final Research Report

The role of TRPM8 in pathophysiology of nasal hyperreactivity

Research Project

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Project/Area Number 19K18760
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56050:Otorhinolaryngology-related
Research InstitutionTeikyo University (2020-2023)
The University of Tokyo (2019)

Principal Investigator

Shimizu Yuya  帝京大学, 医学部, 助手 (00770190)

Project Period (FY) 2019-04-01 – 2024-03-31
Keywords鼻過敏症 / TRPM8 / アレルギー性鼻炎 / 血管運動性鼻炎
Outline of Final Research Achievements

TRPM8 is cold sensing channel activated by cold stimulation and expressed in a subset of sensory neurons. Our previous study revealed that allergic rhinitis model and aging model mice sneezed more than normal mice after administration of TRPM8 agonist menthol. In this study, the same behavior test using TRPM8 knockout(TRPM8-/-) mice was conducted. In aging model, TRPM8-/- mice sneezed less than wild-type. On the other hand, in allergic rhinitis model, no significant difference was observed between both. It is suggested that TRPM8 is associated with nasal hyperreactivity to menthol with aging.

Free Research Field

耳鼻咽喉科学

Academic Significance and Societal Importance of the Research Achievements

アレルギー性鼻炎患者や高齢者では寒冷刺激が誘因となってくしゃみや鼻汁などの鼻過敏症状を呈することがあるが、その発症機序は未解明な点が多く治療に難渋することが少なくない。加齢モデルマウスはメントール点鼻に対して過剰にくしゃみをするが、TRPM8が欠損したマウスではこの反応が抑制された。ヒトの鼻組織においてもTRPM8の発現、活動を制御することができれば高齢者の鼻過敏症に対する新たな治療の創出につながるかもしれない。

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Published: 2025-01-30  

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