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Molecular mechanism of combination use of hyperbaric oxygen in radiotherapy.

Research Project

Project/Area Number 20K08140
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionHokkaido University (2021-2023)
University of the Ryukyus (2020)

Principal Investigator

Katagiri Chiaki  北海道大学, 薬学研究院, 特任助教 (00443664)

Co-Investigator(Kenkyū-buntansha) 石内 勝吾  琉球大学, 医学(系)研究科(研究院), 教授 (10312878)
菅原 健一  琉球大学, 病院, 講師 (50375573)
Project Period (FY) 2020-04-01 – 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 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords高気圧酸素療法 / 放射線治療 / 認知機能 / 神経保護作用 / 放射線 / HBO / 照射線照射 / 放射線照射療法 / 放射線障害 / 能・神経
Outline of Research at the Start

脳腫瘍摘出後に行われる放射線療法は加療期間中の副作用として認知機能の低下を伴い、患者のQOLを著しく低下させるため、その予防策の開発は必須である。脳腫瘍への放射線治療に高気圧酸素療法(HBO)を併用した臨床第Ⅱ相試験では患者の全生存期間の延長をもたらした。本研究はHBOを併用した放射線照射が神経脳神経細胞および神経ネットワークに及ぼす影響と認知機能に与える影響について動物実験を用いた神経科学的な解析を基盤として臨床試験を行い、放射線照射による認知機能低下における予防策の有効性を探索する研究である。

Outline of Final Research Achievements

The standard treatment for malignant gliomas is radiation therapy combined with surgical tumor removal and postoperative chemotherapy, but radiation can have the side effect of reducing the patient's cognitive function. In this study, the combination of hyperbaric oxygen therapy demonstrated a neuroprotective effect against radiation-induced neuronal damage and the associated decline in cognitive function using model animals. Radiation was observed to reduce the axonal size and mature spines of neurons in the cerebral white matter region. In contrast, in the hyperbaric oxygen therapy combination group, the axonal length and number of mature spines in the cerebral white matter were maintained at the same level as in the non-irradiated control group, demonstrating the neuroprotective effect of the combination of hyperbaric oxygen therapy.

Academic Significance and Societal Importance of the Research Achievements

高気圧酸素療法は減圧症の治療、末梢循環不全により低酸素環境となった末梢組織の改善や突発性難聴、そして抗がん剤と併用される脳腫瘍の放射線治療に有効であるとし保険適応治療となっている。高気圧酸素療法の研究は臨床試験研究にとどまっており本研究による神経細胞の動態および認知機能への影響を明らかにしたことは学術的に新しい発見であっただけでなく、認知機能低下の予防方法として放射線治療の一助となる。

Report

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

    (5 results)

All 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results)

  • [Journal Article] Recovery from the damage of cranial radiation modulated by memantine, an NMDA receptor antagonist, combined with hyperbaric oxygen therapy2022

    • Author(s)
      Hokama Yohei、Nishimura Masahiko、Usugi Ryoichi、Fujiwara Kyoko、Katagiri Chiaki、Takagi Hiroshi、Ishiuchi Shogo
    • Journal Title

      Neuro-Oncology

      Volume: 25 Issue: 1 Pages: 108-122

    • DOI

      10.1093/neuonc/noac162

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Altered Calcium Permeability of AMPA Receptor Drives NMDA Receptor Inhibition in the Hippocampus of Murine Obesity Models2022

    • Author(s)
      Miyagi Yasuyo、Fujiwara Kyoko、Hikishima Keigo、Utsumi Daisuke、Katagiri Chiaki、Nishimura Masahiko、Takagi Hiroshi、Ishiuchi Shogo
    • Journal Title

      Molecular Neurobiology

      Volume: 59 Issue: 8 Pages: 4902-4925

    • DOI

      10.1007/s12035-022-02834-2

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Neuroprotective effect of hyperbaric oxygenation treatment before radiotherapy.2022

    • Author(s)
      片桐千秋、高木博、石内勝吾
    • Organizer
      第45回日本神経科学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Neuroprotective effect of hyperbaric oxygenation treatment in radiation injury2022

    • Author(s)
      片桐千秋
    • Organizer
      第11回国際放射線神経生物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 放射線照射による神経障害における高気圧酸素療法併用の神経保護作用2021

    • Author(s)
      片桐 千秋
    • Organizer
      第24回日本神経麻酔集中治療学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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