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2019 Fiscal Year Final Research Report

Analysis of Th1/ Th2 control via Sema4A in sublingual immunotherapy

Research Project

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Project/Area Number 17K16917
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Otorhinolaryngology
Research InstitutionOsaka University

Principal Investigator

Hayama Masaki  大阪大学, 医学系研究科, 助教 (70756048)

Project Period (FY) 2017-04-01 – 2020-03-31
Keywordsアレルギー性鼻炎
Outline of Final Research Achievements

Sublingual immunotherapy in allergic rhinitis leads to treatment by improving Th1/Th2 balance. Semaphorin 4A was expected to be relevant to the mechanism, but no significant results were obtained. However, the expression of semaphorin 4A in the eosinophil was clarified. The expression of semaphorin 4D in the serum of patients with allergic rhinitis was significantly increased compared with that of healthy subjects, and it was decided to continue research on semaphorin and allergic inflammation.

Free Research Field

鼻科学

Academic Significance and Societal Importance of the Research Achievements

アレルギー性鼻炎に対する舌下免疫療法(以下、SLIT)は、そのメカニズムは十分に解明されていない。またSLITの治療効果が得られない症例も多く、また効果が不十分なことも多い。さらに治療期間は複数年と長い。これらはSLITの限界である。しかしSLITはアレルギー性鼻炎の根治的治療で副作用が少ないという強みがある。そこで我々はSLITの治療メカニズムについて、セマフォリン4Aに着目してTh1/Th2の制御メカニズムを解明し、さらに治療効果を増強させることで、治療期間の短縮や、効果の増大を目指した。SLITの治療効果の改善、治療期間の短縮は患者QOLの改善のみならず、医療費の抑制にも意義がある。

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Published: 2021-02-19  

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