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Investigation on how to adjust fatty liver metabolically for suppression of diabetes

Research Project

Project/Area Number 17H02180
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied health science
Research InstitutionToho University

Principal Investigator

KUMASHIRO Naoki  東邦大学, 医学部, 准教授 (20535207)

Co-Investigator(Kenkyū-buntansha) 弘世 貴久  東邦大学, 医学部, 教授 (40384119)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2018: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2017: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords脂肪肝 / インスリン感受性 / 肝臓体積 / 非アルコール性脂肪肝 / 肝インスリン感受性 / 筋インスリン感受性 / 脂肪組織インスリン感受性 / 生活習慣病
Outline of Final Research Achievements

We have established a new method for accurately assessing the lipid accumulation in the liver that can also be used in longitudinal studies. The MRI images (water and fat images) of the Dexon method were used to objectively determine the absolute quantification of total liver volume, total hepatic fat volume, and total hepatic lean volume. Using this method, we analyzed data from cross-sectional studies and found that hepatic lean volume rather than fat volume was significantly and negatively correlated with hepatic insulin sensitivity. This trend was more pronounced in fatty liver patients with type 2 diabetes mellitus. We are now investigating the underlying mechanisms through longitudinal studies in humans and interventional studies in mice.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、脂肪肝において肝インスリン感受性を保持する(脂肪との共存を実現する)ために重要な因子として、肝臓へ蓄積する脂肪ではなく、脂肪を受け止める肝臓の大きさが重要であることを初めて明らかにした、学術的に大きな意義をもつものである。今後、脂肪蓄積を減らすことが困難な高齢社会に、大きなブレークスルーをもたらす礎となる研究成果を得ることができた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (11 results)

All 2019 2018 2017

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 4 results)

  • [Journal Article] Whole hepatic lipid volume quantification and color mapping by multi-slice and multi-point magnetic resonance imaging2019

    • Author(s)
      Igarashi H, Shigiyama F, Wakui N, Nagai H, Shibuya K, Shiraga N, Hirose T, Kumashiro N
    • Journal Title

      Hepatol Res

      Volume: 2019 Dec Issue: 12 Pages: 1374-1385

    • DOI

      10.1111/hepr.13408

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] メトホルミンの肝臓におけるミトコンドリア complex I 阻害非依存性作用2019

    • Author(s)
      渕上彩子, 鴫山文華, 熊代尚記
    • Journal Title

      内分泌・糖尿病・代謝内科

      Volume: 49 Pages: 376-380

    • Related Report
      2019 Annual Research Report
    • Open Access
  • [Journal Article] Mechanisms of sleep deprivation-induced hepatic steatosis and insulin resistance in mice2018

    • Author(s)
      Shigiyama F, Kumashiro N, Tsuneoka Y, Igarashi H, Yoshikawa F, Kakehi S, Funato H, Hirose T
    • Journal Title

      Am J Physiol Endocrinol Metab

      Volume: 315 Issue: 5 Pages: E848-E858

    • DOI

      10.1152/ajpendo.00072.2018

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characteristics of hepatic insulin-sensitive nonalcoholic fatty liver disease.2017

    • Author(s)
      Shigiyama F, Kumashiro N, Furukawa Y, Funayama T, Takeno K, Wakui N, Ikehara T, Nagai H, Taka H, Fujimura T, Uchino H, Tamura Y, Watada H, Nemoto T, Shiraga N, Sumino Y, Hirose T.
    • Journal Title

      Hepatol Commun.

      Volume: 1 Issue: 7 Pages: 634-647

    • DOI

      10.1002/hep4.1077

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Impact of lean hepatic volume on hepatic insulin resistance in human NAFLD2019

    • Author(s)
      Igarashi H, Shigiyama F, Hiruma S, Hirose T, Kumashiro N
    • Organizer
      79th American Diabetes Association Scientific Sessions
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 日本人NAFLDの網羅的解析による新規の肝インスリン感受性規定因子、徐脂肪肝臓体積の同定2019

    • Author(s)
      鴫山文華、熊代尚記、五十嵐弘之、蛭間重典、渋谷和俊、弘世貴久
    • Organizer
      第62回日本糖尿病学会年次学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 脂肪との共存を実現する肝インスリン感受性保持機構の追究2019

    • Author(s)
      熊代尚記
    • Organizer
      第69回日本体質医学会総会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 脂肪との共存を実現する肝インスリン感受性保持機構の追究2019

    • Author(s)
      熊代尚記
    • Organizer
      第34回日本糖尿病合併症学会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Mechanisms of Hepatic Steatosis and Insulin Resistance Induced by Sleep Deprivation in Mice2018

    • Author(s)
      Shigiyama F, Kumashiro N, Yoshikawa F, Tsuneoka Y, Funato H, Hirose T
    • Organizer
      78th Scientific Sessions American Diabetes Association
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 肝脂肪蓄積時の肝インスリン感受性保持機構の探求2018

    • Author(s)
      鴫山文華、熊代尚記、弘世貴久
    • Organizer
      第36回内分泌代謝学サマーセミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 超高齢社会での糖尿病対策を考える2017

    • Author(s)
      熊代尚記
    • Organizer
      第9回抗加齢内分泌研究会(日本抗加齢医学会分科会)
    • Related Report
      2017 Annual Research Report
    • Invited

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Published: 2017-04-28   Modified: 2021-02-19  

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