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2020 Fiscal Year Final Research Report

New therapeutic strategies for irritable bowel syndrome targeting cannabinoid receptors and T-type calcium channels

Research Project

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Project/Area Number 18K06710
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47040:Pharmacology-related
Research InstitutionKindai University

Principal Investigator

Tsubota Maho  近畿大学, 薬学部, 講師 (90510123)

Project Period (FY) 2018-04-01 – 2021-03-31
Keywords過敏性腸症候群 / T型カルシウム
Outline of Final Research Achievements

The present study demonstrates that Cav3.2 T-type Ca2+ channels play an important role in butyrate and TNBS-induced colonic pain. On the other hands, CB1 or CB2 receptor agonist did not show a clear effect in these models. We also clarified that, among existing drug, bepridil, an antiarrhythmic drug and antianginal drug, and pimozide, a typical antipsychotic drug, markedly reversed colonic pain. Therefore, our findings support that the development of a more selective drug for T-type Ca2+ channel using bepridil or pimozide as a lead compound could be a new therapeutic strategy for irritable bowel syndrome.

Free Research Field

薬理学

Academic Significance and Societal Importance of the Research Achievements

過敏性腸症候群は、腹痛や便通異常が長期間持続することで患者のQOLは著しく損なわれる。現在、IBSの治療には主に対症療法が用いられているが、発症メカニズムに基づくより有効な治療薬の開発が望まれている。本研究課題では、新たな過敏性腸症候群の痛みの治療戦略として既存医薬品の中でT型カルシウムチャネル阻害活性を有する抗不整脈薬bepridilや定型抗精神病薬pimozideの有効性しめした。今後これらの薬物をリード化合物としてよりT型カルシウムチャネルに選択性の高い薬物を開発することで過敏性腸症候群の新たな治療戦略が構築できると考える。

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Published: 2022-01-27  

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