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Are skeletal muscles rich in lipids produced by PPARgamma agonistic food materials healthy?

Research Project

Project/Area Number 18K14424
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38050:Food sciences-related
Research InstitutionKitasato University

Principal Investigator

Ochiai Masaru  北里大学, 獣医学部, 講師 (80750546)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords脂質合成 / 筋脂質蓄積 / インスリン抵抗性 / 黒ショウガ / 5,7ジメトキシフラボン / フォルモネチン / 骨格筋 / 脂質 / PPARγ / メトキシフラボノイド / 代謝物 / 2型糖尿病
Outline of Final Research Achievements

This study has investigated the possibility of food materials to activate lipogenesis (PPARγ agonists) on muscular fat accumulation and insulin resistance. Type-2 diabetic mice were fed with 5, 7-dimethoxyflavones (DMF), a methoxypolyphenol compound in black ginger. Glucose tolerance was improved, but muscular fat accumulation and its related enzymatic activity indices were unexpectedly suppressed, and adiponectin levels were not altered by dietary DMF. Metabolomics analyses have revealed that dietary DMF largely increased the levels of formonetin, a kind of flavonoids, in the liver and muscles. Moreover, screening of PPARγ agonists from polyunsaturated fatty acids have showed that palmitic-acid-9-hydroxy-stearic-acid (9-PAHSA) showed a strong PPARγ ligand binding activity. These findings suggest that two chemical compounds, DMF and 9-PAHSA, can be useful for improvement of type-2 diabetes.

Academic Significance and Societal Importance of the Research Achievements

黒ショウガの熱産生に着目した食品は多く市場されている。本研究は、黒ショウガの既存の作用の追究ではなく、黒ショウガに含まれる5,7ジメトキシフラボン(DMF)を用いて骨格筋に脂質蓄積を促してインスリン抵抗性を改善する新規作用の探索および機序の解明を目指した。DMFは骨格筋や肝臓の脂肪蓄積を抑制して、耐糖能を改善するため、機能性食品素材として利用できることを明らかにした。またDMF代謝物であるフォルモネチンが骨格筋および肝臓に蓄積されることから、フォルモネチンが作用している可能性が考えられた。フォルモネチンや新規に見出した9-PAHSAの食品市場での利用についてはその機能性を明確にする必要がある。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Kaempferia parviflora Ethanol Extract, a Peroxisome Proliferator‐Activated Receptor γ Ligand‐binding Agonist, Improves Glucose Tolerance and Suppresses Fat Accumulation in Diabetic NSY Mice2019

    • Author(s)
      Ochiai Masaru、Takeuchi Toshiki、Nozaki Tsutomu、Ishihara Ken‐o、Matsuo Tatsuhiro
    • Journal Title

      Journal of Food Science

      Volume: 84 Issue: 2 Pages: 339-348

    • DOI

      10.1111/1750-3841.14437

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 2型糖尿病改善作用を有するPPARγ活性化食品因子の探索2018

    • Author(s)
      落合 優
    • Journal Title

      メディカル・サイエンス・ダイジェスト

      Volume: 44 Pages: 295-298

    • Related Report
      2018 Research-status Report
  • [Journal Article] 2 型糖尿病改善作用を有するPPARγ 活性化食品素材2018

    • Author(s)
      落合 優
    • Journal Title

      アグリバイオ

      Volume: 22 Pages: 805-808

    • NAID

      40021808057

    • Related Report
      2018 Research-status Report
  • [Journal Article] 黒ショウガを利用した2型糖尿病改善作用に関する研究2018

    • Author(s)
      落合 優
    • Journal Title

      BIO CLINICA

      Volume: 33 Pages: 1287-1291

    • Related Report
      2018 Research-status Report
  • [Presentation] Kaempferia parviflora improve glucose intolerance and fat accumulation in type-2 diabetic model mice2019

    • Author(s)
      Ochiai M, Nozaki K, Ishihara K
    • Organizer
      Asian Congress of Nutrition 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] PPARγリガンド活性化素材である黒ウコン(Kaempferia parviflora)による耐糖能改善作用2019

    • Author(s)
      落合優,野崎勉,石原健夫
    • Organizer
      第73回 日本栄養・食糧学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] PPARγ agonists from Kaempferia parviflora improve glucose and fat metabolism in Mice2018

    • Author(s)
      Masaru Ochiai、Tsutomu Nozaki
    • Organizer
      Experimental Biology 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 黒ショウガ(Kaempferia parviflora)による2型糖尿病モデルNSYマウスの糖脂質代謝改善作用に関する研究2018

    • Author(s)
      落合優、野崎勉、石原健夫
    • Organizer
      第65回日本食品化学工学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-12-27  

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