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Joint development research in the Asian region aiming at eliminating viral hepatitis, SDG's target

Research Project

Project/Area Number 18KK0262
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 58:Society medicine, nursing, and related fields
Research InstitutionHiroshima University

Principal Investigator

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

Co-Investigator(Kenkyū-buntansha) 高橋 陵宇  広島大学, 医系科学研究科(薬), 准教授 (10625510)
秋田 智之  広島大学, 医系科学研究科(医), 講師 (80609925)
杉山 文  広島大学, 医系科学研究科(医), 助教 (50778280)
大久 真幸  広島大学, 医系科学研究科(医), 研究員 (20727250)
永島 慎太郎  広島大学, 医系科学研究科(医), 助教 (60846898)
Project Period (FY) 2018-10-09 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2019: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsB型肝炎ウイルス(HBV) / 母子感染 / 妊婦 / HBVワクチン効果評価 / サーベイランスシステム / 乾燥濾紙血法 / HBV母子感染予防 / 乾燥濾紙血 / SDGs / B型肝炎ウイルス / カンボジア / 妊婦健診 / Elimination of HBV / 妊婦検診 / 小学校健診 / elimination of HBV
Outline of Final Research Achievements

In this study, we conducted a sero-epidemiological survey of pregnant women and their babies in Cambodia in cooperation with the Ministry of Health of Cambodia, hospitals and WHO to obtain evidence that contribute to HBV elimination strategies in Cambodia. Totally 1,565 pregnant women participated in the survey, and the HBs antigen positive rate was 4.3% (95% CI: 3.4-5.4%). HBV genotype C1 was predominant at 70.3%. Of the 35 infants born to HBs antigen-positive pregnant women, one (2.9%, HB vaccine containing Birth dose and HBIG administered) was HBs antigen positive. In this study, blood sample was collected by using the dried blood spots method, and it was useful for sero-epidemiological studies, including genetic analysis, in developing countries.

Academic Significance and Societal Importance of the Research Achievements

HBVの高浸淫地域である発展途上国では、社会インフラシステムが十分に整っていないことから免疫学的・遺伝子レベルでの血清疫学調査は困難であり、それに起因する不利益として、エビデンスに基づく効果的なHBV感染排除のための政策提言は困難であった。
本研究では、乾燥濾紙血法(DBS)を用いて低侵襲・迅速簡便な検体収集を実施、濾紙からの遺伝子抽出ならびに解析に成功し、カンボジア王国における妊婦のHBV感染状況、遺伝子型の分布、およびHBV母子感染率を明らかにした。同国のHBV排除に向けた戦略立案に貢献するとともに、開発途上国で遺伝子解析を含む疫学調査にDBSが有用である可能性を提示した。

Report

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

    (14 results)

All 2022 2021 2020 2019 2018 Other

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

  • [Int'l Joint Research] カンボジア保健省/WHOカンボジア(カンボジア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] WHO, Cambodia(カンボジア)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] カンボジア保健省/カンボジア保健省母子保健センター/WHOカンボジア事務局(カンボジア)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] National Maternal&Child Health Centre/University of Health Sciences/World Health Organization, Cambodia(カンボジア)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Prevalence and genotype distribution of viral hepatitis B in Cambodia between 1990 and 2020: a systematic review and meta-analysis2022

    • Author(s)
      Bunthen E, Pichetra Ou, Serge Ouoba, Md Razeen Ashraf Hussain, Ko Ko, Shintaro Nagashima, Aya Sugiyama, Tomoyuki Akita and Junko Tanaka
    • Journal Title

      Archive of Public Health

      Volume: 13 Issue: 1 Pages: 119-119

    • DOI

      10.1186/s13690-022-00880-9

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of the efficiency of dried blood spot-based measurement of hepatitis B and hepatitis C virus seromarkers2020

    • Author(s)
      Yamamoto Chikako、Nagashima Shintaro、Isomura Mitsuo、Ko Ko、Chuon Channarena、Akita Tomoyuki、Katayama Keiko、Woodring Joseph、Hossain Md. Shafiqul、Takahashi Kazuaki、Tanaka Junko
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 3857-3857

    • DOI

      10.1038/s41598-020-60703-1

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hepatitis B surface antigen seroprevalence among pre- and post-vaccine cohorts in Cambodia, 20172019

    • Author(s)
      Ork Vichit、Woodring Joseph、Shafiqul Hossain Md.、Wasley Annemarie、Nagashima Shintaro、Yamamoto Chikako、Chuon Channarena、Sugiyama Aya、Ohisa Masayuki、Akita Tomoyuki、Ko Ko、Mao Bunsoth、Tanaka Junko
    • Journal Title

      Vaccine

      Volume: 37 Issue: 35 Pages: 5059-5066

    • DOI

      10.1016/j.vaccine.2019.06.073

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High possibility of hepatocarcinogenesis in HBV genotype C1 infected Cambodians is indicated by 340 HBV C1 full-genomes analysis from GenBank2019

    • Author(s)
      Chuon Channarena、Takahashi Kazuaki、Matsuo Junko、Katayama Keiko、Yamamoto Chikako、Ko Ko、Hok Sirany、Nagashima Shintaro、Akbar Sheikh Mohammad Fazle、Tanaka Junko
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 12186-12186

    • DOI

      10.1038/s41598-019-48304-z

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Prevalence and genotype distribution of hepatitis B among pregnant women in Siem Reap province, Cambodia2022

    • Author(s)
      Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi , Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka
    • Organizer
      The 31st Conference of the Asian Pacific Association for the Study of Liver (APASL 2022, SEOUL_Korea)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Prevalence of Hepatitis B virus (HBV) infection in Cambodia: A Systematic Review and Meta-analysis of published studies2021

    • Author(s)
      Bunthen E, Pichetra Ou , Aya Sugiyama, Tomoyuki Akita, Junko Tanaka
    • Organizer
      第31回日本疫学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The sero-epidemiological study on the prevalence of hepatitis B virus infection among the pregnant women and their newborn baby in Cambodia2021

    • Author(s)
      Bunthen E, Ko Ko, Shintaro Nagashima, Serge Ouoba, Kanon Abe, Aya Sugiyama, Kazuaki Takahashi, Rattana Kim, Vichit Ork, Md Shafiqul Hossain, Junko Tanaka
    • Organizer
      第44回日本肝臓学会西部会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Prevalence of Hepatitis B virus (HBV) infection in Cambodia: A Systematic Review and Meta-analysis of published studies2021

    • Author(s)
      Bunthen E, Pchetra Ou, Sugiyama Aya, Akita Tomoyuki, Tanaka Junko
    • Organizer
      第31回日本疫学会学術総会
    • Related Report
      2020 Research-status Report
  • [Presentation] Sero-prevalence of Hepatitis B surface antigen among 5-7 years old children and their mothers in Cambodia by nationwide multi-stage stratified random sampling strategy2018

    • Author(s)
      Tanaka J, Woodring J, Vichit O, Wasley A, Bunsoth M, Nagashima S, Yamamoto C, Chuon C, Ko K, Hossain MS
    • Organizer
      53rd the international liver congress 2018 (EASL)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] DBSを用いた肝炎ウイルスマーカー測定の検出効率の検討2018

    • Author(s)
      山本周子,永島慎太郎, Chuon Channarena,Ko Ko,大久真幸,秋田智之,片山惠子,高橋和明,田中純子
    • Organizer
      第54回日本肝臓学会総会(大阪)
    • Related Report
      2018 Research-status Report

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Published: 2018-10-12   Modified: 2023-01-30  

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