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Evaluation of Reactive sulfur species (RSS) production from marine sulfated polysuccharides in intestine.

Research Project

Project/Area Number 18K05530
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionGunma University of Health and Welfare (2021-2022)
Gunma University (2018-2020)

Principal Investigator

TOKITA Yoshiharu  群馬医療福祉大学, 医療技術学部, 准教授 (70588003)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords海産物 / 硫酸化多糖 / フコイダン / 活性硫黄分子種 / 海産物由来硫酸化多糖 / 腸内細菌
Outline of Final Research Achievements

We hypothesized fucoidan, one of the marine sulfited polysaccharides, will be able to be fermentated by intestinal bacterial flora and produce a reactive sulfure species in intestine. To investigate our hypothesis, we established the quantification method for mice's urynaly and fecal Fucoidan concentration used by ELISA and for fecal hydrogen sulfide, and determined the kinetics of fucoidan, including fecal and urinary concentration, and molecular weight of fucoindan in urine and stools after oral administration of fucoidan to three groups, 1)fucoidan group, (2)mozuku group, and 3) vehicle group, for two weeks. These result suggest that dietary pattern of fucoidan or mozuku intake may have a effect on metabolism and absorption of fucoidan in intestine and production of hydrogen sulfide in stool. Although it is reported condroitine sulfide enhanced hydrogen sulfide production in intestine, dietary pattern of fucoidan attenuated the production of hydrogen sulfide.

Academic Significance and Societal Importance of the Research Achievements

今回の結果から、海産物由来硫酸化多糖の一種であるフコイダンは、その多くが分解されずに体外に排出されるものの、フコイダンもしくはフコイダンを多く含むモズクを長期摂取することで吸収が促進される可能性が示唆された。このことは、食習慣が体内動態に影響を与えることを示しており、今後の健康食品の効果を検証するうえで重要な知見となりうる。また、フコイダンは長期摂取では硫化水素産生を減少させることを示唆する結果を得た。フコイダンの摂取によってメタボリックシンドロームを減らせることが動物実験で明らかになっていることから、このことは硫化水素の生体内における役割の解明に資するものになるかもしれない。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (7 results)

All 2023 2020 2019 2018

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] ApoB48 of Chylomicrons (CM) after Fat Load are Incorporated into the Liver and Reconstituted to VLDL ApoB48 in Humans2023

    • Author(s)
      Yoshiharu Tokita, Katsuyuki Nakajima, Akira Tanaka
    • Journal Title

      Annals of Biotechnology

      Volume: 6 Pages: 1027-1027

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atherogenic postprandial remnant lipoproteins?a causal lipoproteins for the initiation of obesity and atherosclerosis2020

    • Author(s)
      Nakajima Katsuyuki、Tokita Yoshiharu、Tanaka Akira
    • Journal Title

      Journal of Laboratory and Precision Medicine

      Volume: 5 Pages: 19-19

    • DOI

      10.21037/jlpm.2020.03.01

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Changes in attitudes of undergraduate students learning interprofessional education in the absence of patient safety modules: Evaluation with a modified T-TAQ instrument2019

    • Author(s)
      Watanabe H, Makino T, Tokita Y, Kishi M, Lee B, Matsui H, Shinozaki H, and Kama A
    • Journal Title

      Journal of Interprofessional Care

      Volume: 印刷中 Issue: 6 Pages: 689-696

    • DOI

      10.1080/13561820.2019.1598951

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The VLDL receptor plays a key role in the metabolism of postprandial remnant lipoproteins2019

    • Author(s)
      Nakajima Katsuyuki、Tokita Yoshiharu、Tanaka Akira、Takahashi Sadao
    • Journal Title

      Clinica Chimica Acta

      Volume: 495 Pages: 382-393

    • DOI

      10.1016/j.cca.2019.05.004

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hypothesis II: The majority of VLDL-apoB48 remnants in postprandial plasma are derived from the liver, not from the intestine2019

    • Author(s)
      Nakajima Katsuyuki、Tokita Yoshiharu、Tanaka Akira
    • Journal Title

      Clinica Chimica Acta

      Volume: 490 Pages: 12-16

    • DOI

      10.1016/j.cca.2018.12.010

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hypothesis: Postprandial remnant lipoproteins are the causal factors that induce the insulin resistance associated with obesity2018

    • Author(s)
      Nakajima Katsuyuki、Tokita Yoshiharu、Tanaka Akira
    • Journal Title

      Clinica Chimica Acta

      Volume: 485 Pages: 126-132

    • DOI

      10.1016/j.cca.2018.06.029

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 海産物由来硫酸化多糖フコイダンの海藻長期摂取による体内動態変化と消化管内硫化 水素産生評価2020

    • Author(s)
      時田佳治、今井絢子
    • Organizer
      第27回日本未病学会学術総会
    • Related Report
      2020 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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