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Research for therapeutic targets for intracerebral hemorrhage based on the regulation of bioactive lipid mediators

Research Project

Project/Area Number 18K15034
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 48030:Pharmacology-related
Research InstitutionRitsumeikan University

Principal Investigator

Masanori HIJIOKA  立命館大学, 薬学部, 助教 (50780061)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords脳内出血 / ロイコトリエンB4 / リポキシンA4 / ミクログリア / 好中球 / 生理活性脂質
Outline of Final Research Achievements

We focused on the bioactive lipid mediators that regulate neutrophil migration activity, because leakage of blood constituents and immune cells, especially neutrophils worsen the severity of tissue damages in intracerebral hemorrhage (ICH) brain. We revealed that leukotriene B4 (LTB4) transiently increased, and LTB4 were involved in pathomechanisms of ICH such as microglial activation, and neutrophil migration. Furthermore, we focused on lipoxinA4 (LXA4), a bioactive lipid mediator that biosynthesis by 5-lipoxygenase as same as LTB4. LXA4 and its receptor agonist attenuated microglial activation, neutrophil infiltration, and motor deficits in ICH mice.

Academic Significance and Societal Importance of the Research Achievements

脳内出血は脳血管が破れることで脳内に血液が漏れ出し、血液成分や浸潤した免疫細胞によって脳組織傷害が引き起こされる。発症後に傷害組織が修復されることはなく、一度発症すると永続的な予後不良を呈するため、著しいQOLの低下が問題となっている。現在のところ、脳組織傷害を緩和/修復させるような治療法は皆無であることから新規治療標的が必要である。本研究結果は、生理活性脂質の産生制御および作用制御が脳内出血発症後の組織傷害を軽減させ得ることを示しており、今後の治療方策の開発につながる重要な知見であると考える。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2018

All Presentation (10 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Stimulation of LXA4 receptor alleviates motor dysfunction in intracerebral hemorrhage model mice.2020

    • Author(s)
      Futokoro R., Hijioka M. and Kitamura Y.
    • Organizer
      第93回 日本薬理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 抗炎症性生理活性脂質リポキシンA4の受容体刺激による脳内出血病態軽減作用の解析2020

    • Author(s)
      懐理紗, 肱岡雅宣, 北村佳久.
    • Organizer
      日本薬学会 第140年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 脳内出血病態形成過程におけるロイコトリエンB4の機能解析2019

    • Author(s)
      肱岡雅宣, 懐理紗, 香月博志, 北村佳久.
    • Organizer
      第135回日本薬理学会近畿部会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ミクログリアの活性化を介した脳内出血病態形成に対するリポキシンA4の作用解析2019

    • Author(s)
      懐理紗, 肱岡雅宣, 北村佳久.
    • Organizer
      第69回日本薬学会関西支部大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ロイコトリエンB4およびその受容体を標的とした脳内出血治療薬の創薬研究2019

    • Author(s)
      肱岡雅宣, 懐理紗, 香月博志, 北村佳久.
    • Organizer
      第69回日本薬学会関西支部大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Effect of lipoxin A4 for pathology of intracerebral hemorrhage mediated by microglial activation.2019

    • Author(s)
      Futokoro R., Hijioka M. and Kitamura Y.
    • Organizer
      第92回 日本薬理学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Leukotriene B4 secreted by microglia promotes neutrophil invasion into hematoma of mice with intracerebral hemorrhage.2019

    • Author(s)
      Hijioka M., Futokoro R. and Kitamura Y.
    • Organizer
      第92回 日本薬理学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Analysis of the functions of leukotriene B4 and lipoxin A4 to the neutrophil invasion into hematoma in vitro model of intracerebral hemorrhage2019

    • Author(s)
      Hijioka M., Futokoro R. and Kitamura Y.
    • Organizer
      Neuro2019 第42回 日本神経科学大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 生理活性脂質の代謝制御に注目した脳内出血病態の解析2018

    • Author(s)
      肱岡雅宣, 懐理紗, 倉内祐樹, 久恒昭哲, 関貴弘, 古賀友紹, 横溝岳彦, 清水孝雄, 北村佳久, 香月博志.
    • Organizer
      次世代を担う創薬・医療薬理シンポジウム2018
    • Related Report
      2018 Research-status Report
  • [Presentation] Leukotriene B4-BLT1 axis exacerbates neutrophil invasion and motor dysfunction after intracerebral hemorrhage in mice2018

    • Author(s)
      Hijioka M., Kurauchi Y., Hisatsune A., Seki T., Koga T., Kitamura Y., Yokomizo T., Shimizu T. and Katsuki H.
    • Organizer
      18th World Congress of Basic and Clinical Pharmacology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2021-02-19  

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