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Investigation of the role of physiological hypertrophy in the transition from compensatory hypertrophy to heart failure

Research Project

Project/Area Number 16H07049
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Cardiovascular medicine
Research InstitutionKyushu University

Principal Investigator

IKEDA MASATAKA  九州大学, 医学研究院, 学術研究員 (10567382)

Project Period (FY) 2016-08-26 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords心不全 / 低酸素 / REDD1 / DDIT4 / 慢性心不全 / 生理的心肥大 / mTOR / 低酸素誘導因子 / 心肥大 / 心臓リモデリング
Outline of Final Research Achievements

In this study, we investigated the role of REDD1 in the transition from compensatory hypertrophy to heart failure (HF), by focusing on intracellular changes, particularly Hif-1α and REDD1, in response to hypoxia induced by excessive hypertrophy.
Hif-1α and REDD1 were upregulated in the failing myocardium of HF models. In isolated cardiomyocytes, 1% hypoxia induced cell death, accompanied by increased Hif-1α and REDD1, while the knockdown of REDD1 using siRNA aggravated it. Taken together, these results suggested that REDD1, which increased in response to hypoxia induced by excessive hypertrophy in HF, plays a protective role in the failing myocardium.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • Research Products

    (4 results)

All 2018 2017 Other

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

  • [Journal Article] Functional loss of DHRS7C induces intracellular Ca2+ overload and myotube enlargement in C2C12 cells via calpain activation2017

    • Author(s)
      Arai Shinobu、Ikeda Masataka、Ide Tomomi、Matsuo Yuka、Fujino Takeo、Hirano Katsuya、Sunagawa Kenji、Tsutsui Hiroyuki
    • Journal Title

      American Journal of Physiology-Cell Physiology

      Volume: 312 Issue: 1 Pages: C29-C39

    • DOI

      10.1152/ajpcell.00090.2016

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Twinkle helicase過剰発現はミトコンドリア生合成の改善により心筋梗塞後の心破裂を予防する2018

    • Author(s)
      池田昌隆、井手友美、松島将士、池田宗一郎、岡部浩佑、石北陽仁、田所知命、筒井裕之
    • Organizer
      第14回Cardiovascular Translational Research Conference学術集会(福岡)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Morphosis of muti-layered mitochondria in the myocardium of a patient with mitochondrial cardiomyopathy revealed by electron microscopy2017

    • Author(s)
      Masataka Ikeda, Tomomi Ide, Takeo Fujino, Kisho Ohtani, Taiki Higo and Hiroyuki Tsutsui
    • Organizer
      第21回心不全学会学術集会(秋田)
    • Related Report
      2017 Annual Research Report
  • [Remarks] 九州大学循環器内科

    • URL

      https://www.cardiol.med.kyushu-u.ac.jp/

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report

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Published: 2016-09-02   Modified: 2019-03-29  

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