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Clarification of mitochondrial damage in pediatric nephrotic syndrome

Research Project

Project/Area Number 17K10161
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pediatrics
Research InstitutionOsaka Medical College

Principal Investigator

ASHIDA AKIRA  大阪医科大学, 医学部, 教授 (80278514)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords酸化ストレス / ミトコンドリア障害 / ネフローゼ症候群 / ミトコンドリア / ポドサイト / 発現制御 / 遺伝子
Outline of Final Research Achievements

Nephrotic syndrome, which typically results in edema, massive proteinuria, and hypoalbuminemia, is the most common manifestation of glomerular disease in children. Oxidative stress has been reported to be involved in the pathogenesis of this syndrome. In this study, we confirmed the effect of oxidative stress on mitochondria in nephrotic syndrome through the administration of mitochondrion-specific agent to rat model of nephrotic syndrome. In rat model of nephrotic syndrome administered mitochondrion-specific antioxidants, the urinary protein and oxidative stress in blood, urine, and renal tissues (especially in podocyte) were reduced. The alleviation of mitochondrial damage in podocytes indicated that oxidative stress-induced mitochondrial damage is a major factor in the pathogenesis of nephrotic syndrome.

Academic Significance and Societal Importance of the Research Achievements

本研究により、ネフローゼ症候群の発症要因として、酸化ストレスによるミトコンドリア障害が重要であることが明らかとなり、電子顕微鏡観察下でミトコンドリア障害の半定量的評価法を確立した。これらの結果から、本研究の社会的意義として、ミトコンドリア保護という観点によるネフローゼ症候群の治療法の開発に発展する可能性がある。また、学術的意義としては、電子顕微鏡下で腎組織のミトコンドリア障害を評価することにより、従来困難とされる病勢の判断や治療適応の判断に寄与する可能性がある。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (6 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] Efficacy of a mitochondrion-targeting agent for reducing the level of urinary protein in rats with puromycin aminonucleoside-induced minimal-change nephrotic syndrome.2020

    • Author(s)
      Fujii Y, Matsumura H, Yamazaki S, Shirasu A, Nakakura H, Ogihara T, Ashida A
    • Journal Title

      PLoS One

      Volume: 15(2) Issue: 1 Pages: e0227414-e0227414

    • DOI

      10.1371/journal.pone.0227414

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ピューロマイシン腎症ラットにおけるミトコンドリア選択的抗酸化剤MitoTEMPOの蛋白尿減少効果.2019

    • Author(s)
      藤井裕子, 松村英樹, 山﨑哲司, 白数明彦, 中倉兵庫, 服部元史, 芦田 明
    • Organizer
      第31回腎とフリーラジカル研究会.
    • Related Report
      2019 Annual Research Report
  • [Presentation] ピューロマイシン腎症ラットにおけるmitoTEMPOの蛋白尿減少効果2018

    • Author(s)
      藤井裕子、芦田明、松村英樹、山﨑哲司、白数明彦、中倉兵庫、玉井浩
    • Organizer
      第61回日本腎臓学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Efficacy of a mitochondorion-targeting agent to decrease urinary protein in rats with puromycin aminonucleoside nephrosis2018

    • Author(s)
      Fujii Y, Ashida A, Matsumura H, Yamazaki S, Sirasu A, Nakakura H, Tamai H
    • Organizer
      第53回日本小児腎臓病学会
    • Related Report
      2018 Research-status Report
  • [Presentation] ピューロマイシン腎症ラットにおけるMitoTEMPOの蛋白尿減少効果2018

    • Author(s)
      藤井裕子、芦田明、松村英樹、山﨑哲司、白数明彦、中倉兵庫、玉井浩
    • Organizer
      日本腎臓学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Efficacy of a mitochondrion-targeting agent to decrease urinary protein in rats with puromycin aminonucleoside nephrosis2018

    • Author(s)
      Yuko Fujii, Akira Ashida, Hideki Matsumura, Satoshi Yamazaki, Akihiko Shirasu, Hyogo Nakakura, Hiroshi Tamai
    • Organizer
      日本小児腎臓病学会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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