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Evaluation of endogenous and exogenous energy utilization by metabolomics in the early phase energy metabolism of critically ill patients

Research Project

Project/Area Number 19K09390
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55060:Emergency medicine-related
Research InstitutionChiba University

Principal Investigator

Oshima Taku  千葉大学, 災害治療学研究所, 准教授 (50375789)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
KeywordsMetabolomics / 重症患者 / エネルギー代謝 / 同化反応 / 異化反応
Outline of Research at the Start

本研究の目的はこれまで明確ではなかった栄養投与を開始すべきタイミングを,代謝産物(metabolome)の解析(metabolomics)により判断できることを示すことである.ICUに緊急入室し長期の人工呼吸管理を要する重症患者でエネルギー消費量ならびに対組成の変化を測定し、その時のmetabolomeが異化反応時のパターンを示すか同化反応時のパターンを示すかによって、内因性あるいは外因性のエネルギー利用の関係や推移を評価することを試みる.更に,高額で時間もかかる代謝産物の測定に代わり,日常的に用いられる生理学的モニタリングや生化学的検査で同様の評価が可能な方法を合わせて検討する.

Outline of Final Research Achievements

The purpose of this study was to show that metabolomics can help determine the optimal timing to start administering nutrition in critically ill patients, which has not been clearly defined to date. Untargeted metabolomics was performed using serum samples of ten critically ill patients, collected for 7 consecutive days had after admission to the ICU. The energy expenditurs of the patients were measured by indirect calorimetry, and laboratory findings and vital signs were also recorded. We demonstrated that metabolomes associated with changes in nutritional metabolism according to the evolution of the critical illness increased or decreased over time, and that the patterns differed between septic and non-septic patients. The relationship between the metabolomic change and energy consumption and other clinical characteristics are currently under further investigation.

Academic Significance and Societal Importance of the Research Achievements

本研究では重症患者の早期の代謝動態変化を,網羅的metabolomicsによりICU入室から7日間連続採取した検体を用いて,症例数は10例と少ないものの詳細に解析することができた.Metabolomeの経時的な変化に加え,敗血症と非敗血症では検出されるmetabolomeのパターンが変わることが判明した,これは,栄養投与を開始する際,病態についても考慮が必要となることを示唆している.Metabolomicsの結果と臨床兆候との関連性については解析中だが、バイタルサインや臨床法検査の結果などとの関連が見出せれば,より簡便な指標で栄養投与のタイミングを測ることができるようになる.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (2 results)

All 2024 2023

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 2.Untargeted metabolomics analysis of acute-phase energy metabolism in critically ill patients.2024

    • Author(s)
      A Yamamoto, T Oshima, T Oami, S Ishida, A Eguchi, K Sakurai, TA Nakada.
    • Organizer
      43rd International Symposium on Intensive Care and Critical Care
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Metabolomics による重症患者の急性期内因性エネルギー代謝動態の解析2023

    • Author(s)
      山本晃之、大島 拓、大網 毅彦、石田 茂誠、江口 哲史、櫻井 健一、中田 孝明
    • Organizer
      第50回日本集中治療医学会学術集会
    • Related Report
      2022 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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