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2021 Fiscal Year Final Research Report

Exploration of therapeutic strategies for nocturnal polyuria using a novel animal model

Research Project

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Project/Area Number 19K18582
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56030:Urology-related
Research InstitutionOsaka University

Principal Investigator

Sekii Yosuke  大阪大学, 医学部附属病院, 医員 (70824770)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords夜間多尿 / 動物モデル / マウス / 塩分 / Naトランスポーター / nitric oxide
Outline of Final Research Achievements

Nocturia is the most common lower urinary tract symptom, which not only reduces quality of life but also worsens life expectancy. Between 50-80% of patients with nocturia have nocturnal polyuria, and existing treatments for nocturia have had limited efficacy. The pathogenesis of nocturnal polyuria has not been fully elucidated and appropriate animal models are desperately needed to elucidate the mechanism. We focused on salt intake and nitric oxide (NO), a factor in ageing, which influence nocturnal polyuria, and were the first in the world to successfully create an animal model of nocturnal polyuria. We have also elucidated and reported the mechanism of nocturnal polyuria caused by the over-activation of renal Na transporters and changes in sodium excretion in this animal model of nocturnal polyuria.

Free Research Field

夜間多尿

Academic Significance and Societal Importance of the Research Achievements

夜間多尿の原因に塩分が関係してるかもしれないことは、近年注目されていた。しかし、その機序は動物モデルが存在せず腎臓内で何が起きているかは全く分かっていなかった。
そこで我々はマウスを用いて、夜間多尿の動物モデルを確立し、腎臓を検討することで
Naを再吸収するナトリウムトランスポータが不適切に活性化しており、Naを再吸収してしますことで、非活動期にNaを排泄せざるを得なくなり夜間多尿に至ることを見出してきた。今後、この経路を阻害する物質を投与することで、夜間多尿を改善させることが可能になると考えられる。

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Published: 2023-01-30  

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