2023 Fiscal Year Final Research Report
The role of TRPM8 in pathophysiology of nasal hyperreactivity
Project/Area Number |
19K18760
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 56050:Otorhinolaryngology-related
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Research Institution | Teikyo University (2020-2023) The University of Tokyo (2019) |
Principal Investigator |
Shimizu Yuya 帝京大学, 医学部, 助手 (00770190)
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Project Period (FY) |
2019-04-01 – 2024-03-31
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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.
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Free Research Field |
耳鼻咽喉科学
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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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