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Comprehensive epidemiological study on the actual condition and natural history of non-alcoholic fatty liver disease

Research Project

Project/Area Number 19H03886
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionHiroshima University

Principal Investigator

Tanaka Junko  広島大学, 医系科学研究科(医), 教授 (70155266)

Co-Investigator(Kenkyū-buntansha) 杉山 文  広島大学, 医系科学研究科(医), 助教 (50778280)
秋田 智之  広島大学, 医系科学研究科(医), 講師 (80609925)
大久 真幸  広島大学, 医系科学研究科(医), 助教 (20727250)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Keywords非アルコール性脂肪性肝疾患 / NAFLD / NASH / 大規模コホート研究 / 自然史 / 数理疫学的モデル / 血清疫学研究 / 医療ビッグデータ / FIB4-index / 飲酒 / 医療ビックデータ / NDB / NAFLD/NASH
Outline of Research at the Start

本研究では一般集団におけるNAFLDの実態と自然史の解明を目的とし、①広島県健診受診者集団(年間3-3.5万人/年:計15-17.5万人、2013~2018年)、② 岩手県健診受診者集団(年間1.8-2.2万人/年:計9-11万人、2013~2018年)を対象に、次の4つを明らかにする。
1)非アルコール性脂肪性肝疾患(NAFLD)の実態把握:「非アルコール性」の再定義を含む
2)一般集団におけるFIB4-indexの分布と肝線維化指標としての有用性評価
3)数理疫学的モデル(マルコフモデル)による脂肪性肝疾患の肝病態予測推移
4)NAFLD患者のうち、重篤な肝疾患へと進行するNASH患者数の推計

Outline of Final Research Achievements

This study aimed to understand the epidemiology and natural history of NAFLD by analyzing a database of 75,670 individuals with data on alcohol consumption and ultrasonography results from a large-scale health screening data (2008-2019). The results revealed the following findings: 1) There were no significant differences in the prevalence and incidence of fatty liver among different categories of alcohol consumption. 2) The distribution of a scoring system for liver fibrosis, FIB4-index, in the general population was greatly influenced by age factors. 3) By utilizing a Markov model to predict the progression of liver diseases, it was estimated that the cumulative incidence of fatty liver by the age of 70, starting from a normal liver at the age of 40, was approximately 30% for both men and women, while the cumulative incidence of NASH was around 1%. Therefore, it was considered imperative to improve lifestyle habits among middle-aged individuals to reduce future disease burden.

Academic Significance and Societal Importance of the Research Achievements

本研究は、大規模一般集団のデータ解析により、飲酒は脂肪肝有病・罹患頻度に有意に関連せず、肥満が最も影響が大きい独立した因子であることを示した。近年飲酒量や他の肝疾患の有無は問わない包括的な疾患概念・定義として提唱されているMetabolic dysfunction-associated fatty liver Disease (MAFLD)はより実態に合っていると考えられた。また、FIB4-indexは簡便性という利点はあるものの、一般集団に対する一次スクリーニングとしての肝線維化評価には適さない可能性を指摘した。数理疫学モデルにより、一般集団における脂肪性肝疾患の病態推移予測を明らかにした。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (12 results)

All 2022 2021 2020 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] CDA Foundation(米国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Authors’ response to ‘Prevalence and Incidence of Fatty Liver for People Who Took Part in A Health Checkup in 2008-2019 in Japan’2022

    • Author(s)
      Aya Sugiyama, Akemi Kurisu, Tomoyuki Akita, Junko Tanaka
    • Journal Title

      Liver International

      Volume: in press Issue: 6 Pages: 1478-1478

    • DOI

      10.1111/liv.15248

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Distribution of FIB-4 index in the general population -Analysis of 75,666 residents who underwent health checkups-2022

    • Author(s)
      Aya SUGIYAMA, Akemi KURISU, Bunthen E, Serge OUOBA, Ko KO, Anvarjon RAKHIMOV, Tomoyuki AKITA, Takayuki HARAKAWA, Toru SAKO, Makoto KOSHIYAMA, Takashi KUMADA, Junko Tanaka
    • Journal Title

      BMC Gastroenterology

      Volume: in press

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Relationship between drinking frequency and fatty liver prevalence or incidence in Japanese undergoing health checkup in 2008-20192021

    • Author(s)
      Aya Sugiyama, Akemi Kurisu, Serge Ouoba, Bunthen E 1, Ko Ko, Anvarjon Rakhimov, Md Razeen Ashraf Hussain, Tomoyuki Akita, Takayuki Harakawa, Toru Sako, Makoto Koshiyama, Junko Tanaka
    • Journal Title

      Liver International

      Volume: 41 Issue: 12 Pages: 2914-2923

    • DOI

      10.1111/liv.15055

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 健診受診者集団におけるNAFLD の疫学.2021

    • Author(s)
      杉山 文、栗栖 あけみ、田中 純子.
    • Journal Title

      月刊糖尿病

      Volume: 135 Pages: 6-11

    • Related Report
      2021 Annual Research Report
  • [Presentation] Epidemiology of NAFLD in Japan: A nationwide Population-Based Study2021

    • Author(s)
      Junko TANAKA
    • Organizer
      American Association for the Study of Liver Disease The Liver Meeting 2021(AASLD)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Prevalence of fatty liver and advanced fibrosis by using ultrasonography and FibroScan in a random sample of general population2021

    • Author(s)
      Aya Sugiyama, Yuko Nagaoki, Megumi Mino, Hiroomi Kodama, Kanon Abe, Hirohito Imada, Serge OUOBA, Bunthen E, Ko Ko, Tomoyuki Akita, Toru Sako, Kazuaki Chayama, Junko Tanaka
    • Organizer
      American Association for the Study of Liver Disease The Liver Meeting 2021(AASLD)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The relationship between the frequency of drinking and incidence of fatty liver in Japanese cohort undergoing health checkups during the period 2008-20192021

    • Author(s)
      Aya SUGIYAMA, Akemi KURISU, Serge OUOBA, Bunthen E, Ko KO, Anvarjon RAKHIMOV, Md Razeen Ashraf HUSSAIN, Tomoyuki AKITA, Takayuki HARAKAWA, Toru SAKO, Makoto KOSHIYAMA, Junko TANAKA
    • Organizer
      European Association for the Study of the Liver (EASL) Digital NAFLD Summit 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 飲酒量別にみた脂肪肝の疫学的実態把握-大規模住民健診を用いた検討-2021

    • Author(s)
      杉山文、栗栖あけみ、田中純子
    • Organizer
      第44回日本肝臓学会西部会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 健診エコー受診者集団におけるFIB-4 indexの分布2021

    • Author(s)
      杉山文、栗栖あけみ、田中純子
    • Organizer
      第44回日本肝臓学会西部会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 一般集団におけるFIB4index分布とNAFLD(非アルコール性脂肪性肝疾患)の疫学的実態および自然史の解明2020

    • Author(s)
      田中純子、杉山文、栗栖あけみ
    • Organizer
      第56回日本肝臓学会総会(シンポジウム)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Population-basedビッグデータ解析によるNAFLD(非アルコール性脂肪性肝疾患)の疫学的実態2020

    • Author(s)
      杉山文、栗栖あけみ、秋田智之、腰山誠、原川貴之、佐古通、田中純子
    • Organizer
      第56回日本肝臓学会総会(一般演題)
    • Related Report
      2020 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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