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Analysis of hepatic fibrosis and carcinogenesis in NASH by substances derived from microbiota

Research Project

Project/Area Number 18K07991
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionAsahikawa Medical College

Principal Investigator

SAWADA Koji  旭川医科大学, 医学部, 講師 (80548660)

Co-Investigator(Kenkyū-buntansha) 長谷部 拓夢  旭川医科大学, 大学病院, 医員 (10596282)
田中 宏樹  旭川医科大学, 医学部, 助教 (70596155)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsNAFLD / 腸内細菌 / インスリン抵抗性 / 選択的インスリン抵抗性 / プロバイオティクス / NASH / 肝線維化 / 肝発癌
Outline of Final Research Achievements

In this study, we investigated whether Lactobacillus brevis SBC8803 (SBC) improves fatty liver and hepatic fibrosis in NAFLD model mice fed with a high fat diet (HFD). Body weight, blood examinations, and fatty liver improved in SBC mice compared with HFD mice. Findings of RNA sequencing indicated improvement of selective insulin resistance. In addition, there was no difference in gut microbiota in SBC and HFD mice, suggesting a mechanism not mediated by the alteration of gut microbiota.

Academic Significance and Societal Importance of the Research Achievements

肥満患者の増加に伴い非アルコール性脂肪性肝疾患(NAFLD)の患者は世界的に増加している。NAFLDは肝硬変や肝癌へと進展する可能性のある疾患であるが、その治療は食事療法と運動療法であり、確立した薬物療法は糖尿病や脂質異常症など合併症に対するものが中心である。本研究ではLactobacillus brevis SBC8803が腸内細菌叢を変化させること無くNAFLD病態を改善させることが明らかとなり、薬物療法が少ないNAFLDにおける新たな治療薬となり得ることが示された。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2020 2018 Other

All Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (1 results)

  • [Presentation] Heat-killed Lactobacillus brevis SBC8803は選択的インスリン抵抗性を改善させることでNAFLD病態を改善する2022

    • Author(s)
      林秀美、澤田康司、藤谷幹浩
    • Organizer
      第59回日本消化器免疫学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Lactobacillus brevis SBC8803のNAFLD改善効果の解析2021

    • Author(s)
      林秀美、澤田康司、藤谷幹浩
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Lactobacillus brevis SBC8803はNAFLDにおける選択的インスリン抵抗性を部分的に改善させる2020

    • Author(s)
      澤田康司、田中宏樹、林秀美、長谷部拓夢、中嶋駿介、藤谷幹浩、奥村利勝
    • Organizer
      JDDW2020
    • Related Report
      2020 Research-status Report
  • [Presentation] The effects and underling mechanisms of Lactobacillus brevis SBC8803 monotherapy on a mouse model of non-alcoholic fatty liver disease2020

    • Author(s)
      Koji Sawada, Hiroki Tanaka, Hidemi Hayashi, Takumu Hasebe, Shunsuke Nakajima, Mikihiro Fujiya, Toshikatsu Okumura.
    • Organizer
      AASLD 2020, The Liver Meeting Digital Experience
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] NAFLDにおけるLactobacillus brevis SBL8803の有用性に関する検討2018

    • Author(s)
      澤田康司、田中宏樹、林秀美、長谷部拓夢、中嶋駿介、生田克哉、藤谷幹浩、奥村利勝
    • Organizer
      第42回日本肝臓学会東部会
    • Related Report
      2018 Research-status Report
  • [Remarks] 研究者詳細

    • URL

      http://hyouka04.asahikawa-med.ac.jp/html/100000453_ja.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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