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2021 Fiscal Year Final Research Report

Verify if it can be used as a food material to prevent and improve NASH?

Research Project

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Project/Area Number 19K11648
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionHokkaido University of Science

Principal Investigator

WAKAME KOJI  北海道科学大学, 薬学部, 准教授 (40523874)

Co-Investigator(Kenkyū-buntansha) 小松 健一  北海道科学大学, 薬学部, 教授 (10195844)
佐藤 恵亮  北海道科学大学, 薬学部, 講師 (60733946)
中田 章史  北海道科学大学, 薬学部, 准教授 (70415420)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords非アルコール性肝炎 / 脂質代謝 / 桑葉
Outline of Final Research Achievements

We examined the inhibitory effect of mulberry leaf (ML) (Morus alba L.) administration on the development of hepatocellular carcinoma (HCC) in stelic animal model (STAM) mice. Streptozotocin (STZ) was administered to C57L/6J mice who that were fed a high-fat diet (HFD; STAM mice) with 1% ML ad libitum. After sacrificing, the liver and blood were collected. Biochemical tests of plasma and histologic examination of the liver were performed.Pathologic examination of all (6/6) liver samples of the STAM mice showed HCC. On the contrary, in STAM mice who received ML, there was no HCC. Administration of ML in STAM mice inhibited the progression from nonalcoholic hepatitis (NASH) to HCC. ML may be effective in preventing the development of HCC.

Free Research Field

薬学

Academic Significance and Societal Importance of the Research Achievements

桑葉は、養蚕業の衰退と共に国内の耕作面積が減少している。近年では桑葉の抗糖尿効果が確認されているが、我々はSTAMマウスという非アルコール性肝炎(NASH)を発症するモデルマウスを用いて、桑葉の脂質代謝促進作用、脂肪肝(NASH)から肝細胞癌(HCC)の進展を桑葉が予防することを見出した。特に桑葉投与群では中性脂肪の減少と肝臓Lipin1遺伝子の上昇傾向がみられたことがら、桑葉は脂質代謝、脂肪肝、肝細胞癌予防に有用であることが示唆された。これらのことから、日本国民の健康課題であるメタボリックシンドロームの予防に桑葉の活用が期待される。

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Published: 2023-01-30  

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