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New development of animal model of non-obese nonalcoholic steatohepatitis and its corrective establishment

Research Project

Project/Area Number 16K00852
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Eating habits
Research InstitutionKagawa University

Principal Investigator

Hashimoto Takeshi  香川大学, 医学部, 助教 (80380153)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords非アルコール性脂肪性肝炎(NASH) / 脂肪肝 / 肥満症 / ミフェプリストン / グルココルチコイド / 肝星状細胞 / 肝非実質細胞 / 肥満 / 受容体遮断薬 / PPARγ受容体 / 糖尿病 / 生理学 / 薬理学 / 栄養学
Outline of Final Research Achievements

Mifepristone, a putative steroid receptor antagonist, clinically serves as an anti-cancer agent. However, the metabolic effects of long-term treatment with mifepristone remain largely unclear. This study aimed to determine whether mifepristone influences glucose metabolism and hepatic steatosis in healthy mice fed with regular diet (RD). The 12-week administration of mifepristone as a mixture with RD markedly increased a percentage of liver wet weight, the level of fasting blood glucose, the amount of food consumption and a percentage of body fat, in a dose-dependent manner ranging from 0.1 to 30 mg/kg/day. Bodipy 493/503 staining of liver specimens revealed the development of hepatic steatosis. Moreover, it increased in the expression of both gene and protein which have a regulation on glucose metabolism in a liver of the mifepristone fed mouse. These results suggest that long term administration of mifepristone leads to the development of non-obese non-alcoholic fatty liver disease.

Academic Significance and Societal Importance of the Research Achievements

肥満が危険因子の一つである非アルコール性脂肪性肝炎(NASH: Nonalcoholic steatohepatitis)の患者数は、肥満の程度が比較的軽い日本において増加している。この発症メカニズムを解明するための最適な非肥満非アルコール性脂肪肝モデル動物の開発を行った。
従来、非肥満NASHモデル動物には、高コレステロール食事誘発性モデルの報告はあるが、通常食を使用したモデル動物の報告はない。本研究において、通常食と小分子化合物を用いた新しい非肥満非アルコール性脂肪肝モデル動物を確立することができ、非肥満者におけるNASHの病態解明、新規治療標的の探索および薬効評価に有用であると考えられる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (10 results)

All 2019 2018 2017 2016

All Presentation (10 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Mifepristone, a steroid hormone receptor antagonist, upregulates vimentin expression in human hepatic stellate cells.2019

    • Author(s)
      Takeshi Hashimoto, Katsuya Hirano
    • Organizer
      9th FAOPS: Federation of the Asian and Oceanian Physiological Societies
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ミフェプリストンが引き起こす非肥満非アルコール性脂肪性肝炎におけるビメンチンの発現亢進には肝星状細胞が関与する2018

    • Author(s)
      橋本 剛、平野勝也
    • Organizer
      第70回日本生理学会中国四国地方会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ミフェプリストンは肝星状細胞においてビメンチンタンパク質の発現を増加させる2018

    • Author(s)
      橋本 剛、平野勝也
    • Organizer
      第39回日本肥満学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Mifepristone, a steroid receptor antagonist, induces hepatic steatosis in association with upregulation of resistin expression in liver2017

    • Author(s)
      Hashimoto T; Igarashi J; Yamashita T; Hirano K
    • Organizer
      第94回日本生理学会大会
    • Place of Presentation
      静岡県浜松市
    • Year and Date
      2017-03-28
    • Related Report
      2016 Research-status Report
  • [Presentation] A novel angiogenic agent COA-Cl promotes VEGF secretion from mouse C2C12 skeletal myocytes via the activation of cAMP/PKA/CREB/PGC-1alpha signaling axis2017

    • Author(s)
      Igarashi J; Okamoto R; Hashimoto T; Yamashita T; Kubota Y; Tsukamoto I; Sakakibara N; Konishi R; Hirano K
    • Organizer
      第94回日本生理学会大会
    • Place of Presentation
      静岡県浜松市
    • Year and Date
      2017-03-28
    • Related Report
      2016 Research-status Report
  • [Presentation] NAD(P)H and low ionic strength suppresses dissociation of apoptosis-inducing factor from the E. coli membrane2017

    • Author(s)
      Yamashita T; Matsumoto K; Hashimoto T; Igarashi J; Kosaka H; Hirano K
    • Organizer
      第94回日本生理学会大会
    • Place of Presentation
      静岡県浜松市
    • Year and Date
      2017-03-28
    • Related Report
      2016 Research-status Report
  • [Presentation] Coagulation factor XIa induces Ca2+ influx via L-type Ca2+ channel in vascular smooth muscle cells2017

    • Author(s)
      Lui W; Hashimoto T; Yamashita T; Igarashi J; Hirano K
    • Organizer
      第94回日本生理学会大会
    • Place of Presentation
      静岡県浜松市
    • Related Report
      2016 Research-status Report
  • [Presentation] Coagulation factor XIa induces Ca2+ response in rat aorta smooth muscle cells via proteinase-activated receptor 12016

    • Author(s)
      劉文華; 橋本剛; 山下哲生; 五十嵐淳介; 平野勝也
    • Organizer
      第68回日本生理学会中国四国地方会
    • Place of Presentation
      岡山県
    • Year and Date
      2016-11-05
    • Related Report
      2016 Research-status Report
  • [Presentation] Apoptosis-inducing factorと大腸菌膜との相互作用の解析(Analysis of interaction of apoptosis-inducing factor with E. coli membrane)2016

    • Author(s)
      松本感; 山下哲生; 橋本剛; 五十嵐淳介; 小坂博昭; 平野勝也
    • Organizer
      第68回日本生理学会中国四国地方会
    • Place of Presentation
      岡山県
    • Year and Date
      2016-11-05
    • Related Report
      2016 Research-status Report
  • [Presentation] A key role of a second messenger cAMP in the induction of a transcriptional coactivator PGC-1α by a novel proangiogenic adenosine analogue COA-Cl in human fibroblasts2016

    • Author(s)
      五十嵐淳介; 岡本隆司; 橋本剛; 山下哲生; Takata M; 窪田泰夫; Sakakibara N; 塚本郁子; 小西良士; 平野勝也
    • Organizer
      The 9th International Conference on the Biology, Chemistry, and Therapeutic Applications of Nitric Oxide, The 16th Annual Scientific Meeting of the Nitric Oxide Society of Japan
    • Place of Presentation
      宮城県仙台市
    • Year and Date
      2016-05-20
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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