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Optimization of antimalarial treatment for pregnant women: a pharmacoepidemiological approach

Research Project

Project/Area Number 21K16316
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54030:Infectious disease medicine-related
Research InstitutionThe University of Tokyo

Principal Investigator

Saito Makoto  東京大学, 医科学研究所, 助教 (30871339)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsマラリア / 妊婦 / 疫学 / 感染症 / 熱帯医学 / 妊娠
Outline of Research at the Start

妊娠中の熱帯熱マラリアは母児ともに大きな影響を及ぼすことが知られているが、妊婦に対する治療成績は一般成人に対して劣っていることが報告されている。一つの原因として、主に妊娠中の生理的な薬物動態の変化により抗マラリア薬の標準量は妊婦にとっては不十分である可能性が指摘されている。本研究ではdihydroartemisinin-piperaquineとartemether-lumefantrineという世界中で最もよく使用される二つの抗マラリア薬について、妊婦における薬物血中濃度を測定し、その結果を基に妊婦に対する治療の最適化を図り、マラリアによる悪影響から母児を守ることを目的としている。

Outline of Final Research Achievements

The aim of this project was to explore the impact of malaria on mothers and fetuses, and to optimize antimalarial treatment for pregnant women. Firstly, we analyzed data on severe malaria in pregnant women in six Southeast Asian countries with low malaria transmission. The risks of maternal mortality and fetal loss following severe malaria were very high. Although severe anemia and hyperparasitaemia were common among pregnant women, these two criteria alone were not associated with maternal mortality, suggesting that severe malaria criteria may need to be tailored for pregnant women. Secondly, we compared antimalarial drug levels in capillary and venous blood samples to assess whether capillary samples, which can be collected more easily and less invasively, could be used. Although antimalarial drug levels in capillary samples were highly correlated with those in venous samples, the drug levels of lumefantrine and piperaquine could not be predicted with adequate precision.

Academic Significance and Societal Importance of the Research Achievements

本研究の研究結果は、熱帯熱マラリアにり患した妊婦の中で、よりハイリスクな妊婦患者の識別に役立つことが期待され、早期に適切な治療を受けることは母児の高い致死率の抑制につながることが期待される。また、毛細血管血は簡便で低侵襲的な採血手段ではあるが、治療効果予測等の目的で静脈血薬物濃度の代替として個々の患者に対して用いるには薬物の種類によっては注意が必要であることが示唆された。一方で、全体としては静脈血と高い相関を示しており、薬物動態解析等に用いることは可能であると考えられ、今後の研究の推進に役に立つことが期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 Other

All Int'l Joint Research (5 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results)

  • [Int'l Joint Research] Shoklo Malaria Research Unit/Mahidol University(タイ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Oxford(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Oxford/Shoklo Malaria Research Unit(タイ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University of Oxford(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Mahidol-Oxford Research Unit(タイ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Comparison of lumefantrine, mefloquine, and piperaquine concentrations between capillary plasma and venous plasma samples in pregnant women with uncomplicated falciparum and vivax malaria2024

    • Author(s)
      Saito Makoto、Wilaisrisak Pornpimon、Pimanpanarak Mupawjay、Viladpai-Nguen Jacher、Paw Moo Kho、Koesukwiwat Urairat、Tarning Joel、White Nicholas J.、Nosten Francois、McGready Rose
    • Journal Title

      Antimicrobial Agents and Chemotherapy

      Volume: - Issue: 5

    • DOI

      10.1128/aac.00093-24

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Severe falciparum malaria in pregnancy in Southeast Asia: a multi-centre retrospective cohort study2023

    • Author(s)
      Saito Makoto、Phyo Aung Pyae、Chu Cindy、Proux Stephane、Rijken Marcus J.、Beau Candy、Win Htun Htun、Archasuksan Laypaw、Wiladphaingern Jacher、Phu Nguyen H.、Hien Tran T.、Day Nick P.、Dondorp Arjen M.、White Nicholas J.、Nosten Francois、McGready Rose
    • Journal Title

      BMC Medicine

      Volume: 21 Issue: 1 Pages: 320-320

    • DOI

      10.1186/s12916-023-02991-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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