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Real-time monitoring of intracellular ATP concentration in acute spinal cord injury

Research Project

Project/Area Number 19K09527
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionNational Cardiovascular Center Research Institute (2021)
Osaka University (2019-2020)

Principal Investigator

Ohnishi Yuichiro  国立研究開発法人国立循環器病研究センター, 研究所, 非常勤研究員 (00533811)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords脊髄損傷 / 代謝 / 解糖系 / 軸索変性 / 酸化ストレス / ATP / metabolism / spinal cord injury / degeneration / glycolysis / oxidative stress / 急性期 / アデノシン三リン酸
Outline of Research at the Start

脊髄損傷では直達障害により血管が破綻し脊髄が圧迫される。損傷部は血栓、血腫、浮腫が生じ血流が低下し、組織虚血から細胞内ATPの低下・枯渇を引き起こす。脊髄損傷急性期に細胞内ATPが時間的空間的にどのような変化を起こすかは不明な点が多い。本研究では、個体内で細胞レベルのATP量を非侵襲的かつ定量的に計測する事ができる細胞内ATP可視化マウスを用い、脊髄損傷急性期の細胞内ATPのリアルタイムモニタリングを行い、脊髄損傷後の細胞内ATPの時間的空間的変化を明らかにする。そして急性期の細胞内エネルギー代謝変化が脊髄2次損傷の増悪に与える影響を評価する。

Outline of Final Research Achievements

Spinal cord injury gradually spreads away from the epicentre of injury. The rate of degeneration on the rostral side of the injury differs from that on the caudal side. The blood flow at the rostral side of the injury showed ischaemia-reperfusion, while the caudal side presented stable perfusion. Although the low-ATP regions expanded at the rostral side of injury until 24h after spinal cord injury, the caudal-side ATP levels were preserved. The low-ATP regions on the rostral side showed mitochondrial reactive oxygen species production. Administration of 2-deoxy-D-glucose as a glycolysis inhibitor decreased the caudal ATP levels and expanded the low-ATP regions to the caudal side until 24h after spinal cord injury. These results suggest that deficits in the glycolytic pathway accelerate the caudal degeneration, while immediate rostral degeneration is exacerbated by oxidative stress in early thoracic cord injury.

Academic Significance and Societal Importance of the Research Achievements

脊髄損傷後の軸索変性は頭尾側に徐々に広がっていく。損傷頭側での軸索変性は損傷直後から早く進行し、損傷尾側での軸索変性は遅れて進む。損傷頭尾側での軸索変性の進行の違いのメカニズムはよくわかっていない。本研究では脊髄損傷急性期の細胞内ATPのリアルタイムモニタリングを行い、細胞内ATPの時間的空間的変化を明らかにした。そして急性期の脊髄細胞内エネルギー代謝が2次損傷の増悪に与える影響を評価した。また、脊髄損傷の病態を、エネルギー代謝という観点から探索しし、脊髄損傷急性期での軸索変性の進行の違いのメカニズムを世界で初めて明らかにしている。

Report

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

    (16 results)

All 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (10 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Rostro-caudal different energy metabolism leading to differences in degeneration in spinal cord injury2021

    • Author(s)
      Ohnishi Yuichiro、Yamamoto Masamichi、Sugiura Yuki、Setoyama Daiki、Kishima Haruhiko
    • Journal Title

      Brain Communications

      Volume: 3 Issue: 2

    • DOI

      10.1093/braincomms/fcab058

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] An increase in the posterior subarachnoid space accelerates the timing of syrinx resolution after foramen magnum decompression of type I Chiari malformation2021

    • Author(s)
      Ohnishi Yuichiro、Fujiwara Sho、Takenaka Tomofumi、Kawamoto Saki、Iwatsuki Koichi、Kishima Haruhiko
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 19152-19152

    • DOI

      10.1038/s41598-021-98546-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mass Spectrometric Enzyme Histochemistry for Choline Acetyltransferase Reveals <i>De Novo</i> Acetylcholine Synthesis in Rodent Brain and Spinal Cord2021

    • Author(s)
      Takeo Emi、Sugiura Yuki、Ohnishi Yuichiro、Kishima Haruhiko、Fukusaki Eiichiro、Shimma Shuichi
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 12 Issue: 12 Pages: 2079-2087

    • DOI

      10.1021/acschemneuro.0c00720

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sufficient Surgical Window for Deep-Seated Extracranial Schwannomas in the Craniocervical Junction by the Anterolateral Approach.2019

    • Author(s)
      Ohnishi YI, Nakajima N, Fujiwara S, Moriwaki T, Arita H, Kishima H.
    • Journal Title

      Neurospine.

      Volume: 4 Issue: 2 Pages: 4-4

    • DOI

      10.14245/ns.1938270.135

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conservative and Surgical Management of Spinal Cord Cavernous Malformations.2019

    • Author(s)
      Ohnishi YI, Nakajima N, Takenaka T, Fujiwara S, Miura S, Terada E, Yamada S, Kishima H.
    • Journal Title

      World Neurosurg X.

      Volume: 5 Pages: 100066-100066

    • DOI

      10.1016/j.wnsx.2019.100066

    • NAID

      130007904678

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Automatic diagnosis of neurological diseases using MEG signals with a deep neural network.2019

    • Author(s)
      Aoe J, Fukuma R, Yanagisawa T, Harada T, Tanaka M, Kobayashi M, Inoue Y, Yamamoto S, Ohnishi Y, Kishima H.
    • Journal Title

      Sci Rep.

      Volume: 9(1) Issue: 1 Pages: 5057-5057

    • DOI

      10.1038/s41598-019-41500-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 脊髄損傷頭尾側でのエネルギー代謝と軸索変性の違い2021

    • Author(s)
      大西諭一郎
    • Organizer
      日本脊髄外科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 骨粗鬆性椎体骨折の治療2021

    • Author(s)
      大西諭一郎
    • Organizer
      日本脊髄外科学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 脊髄損傷急性期の病態理解に基づく治療法開発への取り組み2020

    • Author(s)
      大西諭一郎、藤原 翔、西 麻哉、竹中朋文、中島伸彦、貴島晴彦
    • Organizer
      日本脳神経外科学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 髄内腫瘍摘出術における腫瘍周囲の術中血流評価2019

    • Author(s)
      大西諭一郎
    • Organizer
      第34回日本脊髄外科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 脊髄海綿状血管腫の保存的治療と外科治療2019

    • Author(s)
      大西諭一郎
    • Organizer
      第34回日本脊髄外科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 頭蓋底陥入症に対する経口アプローチと経鼻アプローチによる到達範囲の検討2019

    • Author(s)
      大西諭一郎
    • Organizer
      第31回日本頭蓋底外科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 骨粗鬆性多発椎体骨折に対する治療経験2019

    • Author(s)
      大西諭一郎
    • Organizer
      近畿脊髄外科研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 斜台部骨巨細胞腫に対して経鼻内視鏡下腫瘍摘出術を施行した1例2019

    • Author(s)
      大西諭一郎
    • Organizer
      第一回関西経鼻内視鏡頭蓋底外科研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Management of spinal cord cavernous malformations2019

    • Author(s)
      Yuichiro Onishi
    • Organizer
      EuroSpine
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 斜台部骨巨細胞腫に対して経鼻内視鏡下腫瘍摘出術を施行した1例2019

    • Author(s)
      大西諭一郎
    • Organizer
      第26回日本神経内視鏡学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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