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2019 Fiscal Year Final Research Report

Sleep and glycative stress: Exploring the relationship between melatonin and advanced glycation endproducts (AGEs)

Research Project

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Project/Area Number 17K01880
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied health science
Research InstitutionDoshisha University

Principal Investigator

YONEI Yoshikazu  同志社大学, 生命医科学部, 教授 (40191655)

Project Period (FY) 2017-04-01 – 2020-03-31
Keywordsメラトニン / 糖化ストレス / 食後高血糖 / 睡眠の質 / 蛋白糖化最終産物(AGEs)
Outline of Final Research Achievements

We made a hypothesis that “High “”sleep quality”” may elevate melatonin secretion and improve glucose metabolism” and tested it. In the in vitro experiments, the melatonin action to accelerate the degradation of advanced glycation endproducts (AGEs) was verified, but no effect on the proteasome activity or oxidized protein hydrolase (OPH) activity. Melatonin promoted osteoclast differentiation. Furthermore, the clinical trials showed that exogenous melatonin alleviates postprandial hyperglycemia, high "sleep quality" increases melatonin secretion, and melatonin metabolite, 6-sulfatoxy-melatonin, is useful as an index for "sleep quality". Coupled with these findings, it was suggested that melatonin may play an important role in the mechanism of improving glucose metabolism by high "sleep quality".

Free Research Field

ライフサイエンス/健康科学

Academic Significance and Societal Importance of the Research Achievements

2型糖尿病で代表される糖化ストレス関連疾患は近年増加の一途を辿っているが、「睡眠の質」と深い関連があることがわかってきた。しかし、日本人の「睡眠の質」は諸外国に比べて低いのが現状である。「睡眠の質」評価指標としてメラトニン分泌量は重要であるが、その方法は確立されていない。我々は「『睡眠の質』を高めることによってメラトニン分泌が増加し糖代謝が改善する」という仮説をたてた。この仮説を検証し、国民の「睡眠の質」を向上させ、糖化ストレス関連疾患を減らすことの意義は大きいと考えている。

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Published: 2021-02-19  

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