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Elucidation of the mechanism behind the inhibition of obesity-induced inflammation by green tea mediated through intestinal bacteria

Research Project

Project/Area Number 17K15268
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Food science
Research InstitutionShinshu University

Principal Investigator

Ogita Tasuku  信州大学, 先鋭領域融合研究群バイオメディカル研究所, 助教(特定雇用) (50738010)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords抗炎症効果 / 肥満モデルマウス / Flavonifractor plautii / 腸内細菌 / 緑茶 / 肥満
Outline of Final Research Achievements

In this study, we elucidated the mechanism underlying Flavonifractor plautii (F. plautii)-mediated reduction of adipose tissue inflammation in obese mice. F. plautii treatment tended to suppress the decrease in intestinal barrier function in Caco-2 cells mediated by the treatment of inflammatory cytokines. Moreover, F. plautii was shown to have anti-inflammatory properties using RAW264.7 cells. Oral administration of F. plautii increased the phylum Firmicutes in the gut-associated lymphoid tissue of ovalbumin-sensitized mice. It also decreased the gene expression of TNF-α mRNA in the epididymal adipose tissue of obese mice.

Academic Significance and Societal Importance of the Research Achievements

本研究により、生活習慣病の起因となる、肥満にともなう脂肪組織の炎症が、食品(緑茶)摂取による腸内細菌Flavonifractor plautiiの増加で抑制されることが明らかとなった。食品の摂取による腸内細菌の変化に着目することで、食品による新たな生活習慣病の予防戦略をもたらしうると考えられる。

Report

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

    (7 results)

All 2019 2018

All Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Presentation] Flavonifractor plautiiの経口投与による肥満脂肪組織における抗炎症作用2019

    • Author(s)
      三上 彩音、荻田 佑、深澤 知夏、下里 剛士
    • Organizer
      日本農芸化学会2019年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Flavonifractor plautiiの経口投与によるTh2免疫応答の抑制効果2019

    • Author(s)
      荻田 佑、山本 祥也、深澤 知夏、三上 彩音、下里 剛士
    • Organizer
      日本農芸化学会2019年度大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Immunoregulatory function of Flavonifractor palutii2018

    • Author(s)
      Ogita T., Namai F., Mikami A., Shimosato T.
    • Organizer
      ASIAN AUSTRALASIAN ANIMAL PRODUCTION CONGRESS
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Flavonifractor plautii exerts Th1/Th2 immunomodulatory effects in mouse2018

    • Author(s)
      Chika Fukasawa, Tasuku Ogita, Takeshi Shimosato
    • Organizer
      2018 Symposium of Korean Society for Lactic Acid Bacteria and Probiotics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Flavonifractor plautii inhibits inflammatory responses in lipopolysaccharide-stimulated RAW 264.7 cells and alleviates acute-colitis in mice2018

    • Author(s)
      Ayane Mikami, Tasuku Ogita, Takeshi Shimosato
    • Organizer
      2018 Symposium of Korean Society for Lactic Acid Bacteria and Probiotics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of soybean resistant protein on the intestinal microflora and immune system2018

    • Author(s)
      Tasuku Ogita
    • Organizer
      2018 Symposium of Korean Society for Lactic Acid Bacteria and Probiotics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Flavonifractor plautii によるマウスにおける 急性大腸炎の軽減効果2018

    • Author(s)
      三上彩音, 荻田佑, 生井楓, 下里剛士
    • Organizer
      日本食品免疫学会
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2020-03-30  

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