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2021 Fiscal Year Final Research Report

Comprehensive analysis on the effects of niacin nutritional fluctuations for metabolic regulation

Research Project

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Project/Area Number 19K20117
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionThe University of Shiga Prefecture

Principal Investigator

Hatayama Sho  滋賀県立大学, 人間文化学部, 講師 (70825801)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsナイアシン / トリプトファン-ニコチンアミド転換経路 / 代謝 / 栄養
Outline of Final Research Achievements

The aim of this study is to analysis the effect of niacin nutritional status on metabolic regulation from nutritional and vitaminology aspects. In the present study, we established the model animal that could control niacin nutritional status by using kynurenine-3-monooxygenase, rate limiting enzyme of tryptophan-nicotinamide pathway, knock out (KMO-KO) mice. By using this model animal, we suggested that ethanol intake induced the deterioration of niacin nutritional status via increase of NAD consumption. In addition, we also revealed the niacin nutritional status of patients with alcohol use disorders by using urine samples.

Free Research Field

栄養学および健康科学

Academic Significance and Societal Importance of the Research Achievements

本研究により確立したモデル動物は,生体内の「真」のナイアシン栄養状態を評価可能である.そのため,ナイアシン栄養状態に影響をおよぼす因子,またナイアシン栄養状態とさまざまな生理機能の関連について,分子レベルで解明することに貢献するものである.また,本研究成果はエタノール摂取によるナイアシン栄養状態の低下機構を明らかにしたことから,わが国においても問題となっているアルコール依存症患者におけるナイアシン欠乏様症状の効果的な予防・治療法の確立につながるという社会的意義をもつ.

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Published: 2023-01-30  

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