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Study on the preservation effect of normothermic oxygenated perfusion in liver transplantation.

Research Project

Project/Area Number 18K16285
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55010:General surgery and pediatric surgery-related
Research InstitutionJichi Medical University

Principal Investigator

Okada Noriki  自治医科大学, 医学部, 助教 (40611786)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords肝移植 / 常温酸素化灌流 / グラフト保存
Outline of Final Research Achievements

A 12-hour normothermic oxygen perfusion experiment was conducted using perfusion solutions with adjusted extracellular fluid-type electrolyte composition, glucose and amino acid concentrations, and porcine blood as oxygen carrier at 0%, 10%, 30% and 50% concentrations. The results showed that the increase in porcine liver weight during perfusion was significantly reduced with increasing concentrations of porcine blood as oxygen carrier. At a porcine blood concentration of 0%, pig liver weight increased 1.34 ± 0.06-fold after 12 h of normothermic oxygen perfusion, but decreased to 1.03 ± 0.04-fold when the blood concentration increased to 50%. Pathology showed that the expansion of the sinusoids was suppressed with increasing porcine blood concentration, suggesting an improvement in edema.

Academic Significance and Societal Importance of the Research Achievements

近年、世界的な臓器不足を背景として移植可能な臓器を増加させる研究が求められている。肝移植におけるドナーは、生体ドナー、脳死ドナー、心停止ドナーの3種類があるが、心停止ドナーからの提供される肝グラフトは、ドナーの心停止後からグラフト摘出までの温阻血時間の影響のため移植後早期グラフト機能不全のリスクが高く、現在は利用されていない。脳死肝移植待機中に亡くなる患者も少なくなく、そのような患者に移植可能なグラフト供給数の確保が急務となっている。常温酸素化保存技術が進めば、これまで使用できなかった心停止ドナーグラフトや脂肪肝グラフトの使用ができるようになり、移植可能な臓器を増加させることが期待される。。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (2 results)

All 2022 2019

All Presentation (2 results)

  • [Presentation] ブタ肝常温酸素化灌流保存における酸素運搬体の必要性について2022

    • Author(s)
      岡田憲樹、寺谷工、眞田幸弘、大西康晴、菱川修司、佐久間康成、佐田尚宏
    • Organizer
      第46回臓器保存生物医学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ブタ肝常温酸素化灌流保存における酸素運搬体の必要性について2019

    • Author(s)
      岡田憲樹、寺谷工、眞田幸弘、大西康晴、菱川修司、佐久間康成、佐田尚宏
    • Organizer
      第46回臓器保存生物医学会学術集会
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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