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Roles of phytochemicals and gut microbiota in "health transition" of contemporary humans

Research Project

Project/Area Number 20K21443
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 45:Biology at organismal to population levels and anthropology, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Umezaki Masahiro  東京大学, 大学院医学系研究科(医学部), 教授 (30292725)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2021: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsファイトケミカル / 非感染性疾患 / 健康転換 / 東南アジア / 栄養転換 / 腸内細菌 / ラオス / 少数民族
Outline of Research at the Start

本研究課題は、エネルギー密度の高い食品の過剰摂取と身体活動の不足という現象が観察されないにもかかわらず、非感染性疾患の有病率が急速に増加するという、いわゆる途上国の「辺縁地域」で顕在化する健康問題のメカニズムを、伝統的な食生活では多量に摂取されていたファイトケミカルの摂取と腸内細菌叢の変化に焦点をあてて解明を試みるものである。人類が経験する非感染性疾患の増加という現象の背景にある要因として、ファイトケミカル(野生植物)の摂取量減少と腸内細菌叢の乱れという2点を、健康転換の途上にある人類集団で検討することに挑戦的研究としての意義がある。

Outline of Final Research Achievements

In mountainous regions of Southeast Asia, the people have consumed substantial amount of wild plants, which probably have contributed to suppress oxidative stress/inflammation due to the effect of phytochemicals. We hypothesized that 'nutritional transition' in the regions is partly attributable to the longitudinal reduction in phytochemicals consumption and the change in the gut microbiota. The survey was conducted in three villages in the northern mountainous region of Laos. In addition to questionnaire surveys for dietary habits and physical activity, fecal, urine, scalp hair and DBS samples were collected. Biomarkers of oxidative stress/inflammation and gut microbiota were evaluated. The major findings were reported in five papers that were published in international journals.

Academic Significance and Societal Importance of the Research Achievements

ラオスの農村部で非感染性疾患が増加する背景として、ファイトケミカル(抗酸化物質のひとつ)を多く含む野生植物の摂取量が減少していること、食生活の変容にともなう腸内細菌叢の変化に加えて、重金属暴露、酸化ストレスがかかわっている可能性を示した。現代社会では甘く柔らかい野菜が好まれるが、非感染性疾患のリスク低減のためには、可食野生植物を活用することも考えるべきだろう。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (2 results) Book (2 results)

  • [Int'l Joint Research] Lao TPHI/NAFRI(ラオス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Tropical and Public Health Institute/NAFRI(ラオス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] ラオス熱帯医学公衆衛生研究所/ラオス農業林業研究所(ラオス)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Determinants of oxidative stress among indigenous populations in Northern Laos: Trace element exposures and dietary patterns2023

    • Author(s)
      Mizuno Yuki、Inaba Yohei、Masuoka Hiroaki、Kibe Mihoko、Kosaka Satoko、Natsuhara Kazumi、Hirayama Kazuhiro、Inthavong Nouhak、Kounnavong Sengchanh、Tomita Shinsuke、Umezaki Masahiro
    • Journal Title

      Science of The Total Environment

      Volume: 868 Pages: 161516-161516

    • DOI

      10.1016/j.scitotenv.2023.161516

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of modernization on oxidative stress among indigenous populations in northern Laos2023

    • Author(s)
      Mizuno Yuki、Inaba Yohei、Masuoka Hiroaki、Kibe Mihoko、Kosaka Satoko、Natsuhara Kazumi、Hirayama Kazuhiro、Inthavong Nouhak、Kounnavong Sengchanh、Tomita Shinsuke、Umezaki Masahiro
    • Journal Title

      American Journal of Biological Anthropology

      Volume: - Issue: 3 Pages: 352-363

    • DOI

      10.1002/ajpa.24722

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Association between the dietary inflammatory index and disability in Japanese older people2022

    • Author(s)
      Masuda Momoka、Natsuhara Kazumi、Sueyoshi Shuji、Odani Shingo、Yagyu Fumihiro、Tadokoro Kiyoshi、Ohnishi Mayumi、Nakao Rieko、Goto Chiho、Umezaki Masahiro
    • Journal Title

      Public Health Nutrition

      Volume: 25 Issue: 11 Pages: 3137-3145

    • DOI

      10.1017/s1368980022001604

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Divergence in Nutritional Intake and Physical Activity Patterns Among Households in a Village of Ethnic Minorities in Northern Laos at the Initial Stage of Health Transition2022

    • Author(s)
      Kibe Mihoko、Tomita Shinsuke、Umezaki Masahiro
    • Journal Title

      Human Ecology

      Volume: 50 Issue: 2 Pages: 287-305

    • DOI

      10.1007/s10745-022-00310-y

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impact of modernization on urinary concentrations of arsenic, cadmium, lead, and selenium in rural residents of Northern Laos2021

    • Author(s)
      Mizuno Yuki、Masuoka Hiroaki、Kibe Mihoko、Kosaka Satoko、Natsuhara Kazumi、Hirayama Kazuhiro、Inthavong Nouhak、Kounnavong Sengchanh、Tomita Shinsuke、Umezaki Masahiro
    • Journal Title

      American Journal of Human Biology

      Volume: 34 Issue: 4

    • DOI

      10.1002/ajhb.23685

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Assessment of intra- and inter-assay variation in dried blood spot telomere length measurements by qPCR2021

    • Author(s)
      MIZUNO YUKI、HUR KYU、UMEZAKI MASAHIRO
    • Journal Title

      Anthropological Science

      Volume: 129 Issue: 1 Pages: 99-102

    • DOI

      10.1537/ase.2011301

    • NAID

      130008030437

    • ISSN
      0918-7960, 1348-8570
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ラオス北部住民の重金属曝露と酸化ストレスとの関連2021

    • Author(s)
      水野佑紀,増岡弘晃,木部未帆子,小坂理子,稲葉洋平,夏原和美,平山和宏,Sengchanh Kounnavong,富田晋介,梅崎昌裕
    • Organizer
      第91回日本衛生学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] ラオス北部住民の重金属類暴露と血圧との関連2020

    • Author(s)
      水野佑紀,増岡弘晃,木部未帆子,小坂理子,夏原和美,平山和宏,Nouhak Inthavong,Sengchanh Kounnavong,富田晋介,梅崎昌裕
    • Organizer
      第31回日本微量元素学会学術集会
    • Related Report
      2020 Research-status Report
  • [Book] 微生物との共生2023

    • Author(s)
      梅﨑 昌裕
    • Total Pages
      240
    • Publisher
      京都大学学術出版会
    • ISBN
      9784814004607
    • Related Report
      2022 Annual Research Report
  • [Book] 人間の本質にせまる科学2021

    • Author(s)
      井原 泰雄、梅﨑 昌裕、米田 穣
    • Total Pages
      296
    • Publisher
      東京大学出版会
    • ISBN
      4130622285
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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