• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Roles of mitochondrial calcium uptake in diastolic dysfunction in the hearts with diabetes mellitus

Research Project

Project/Area Number 19K08507
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionTohoku University

Principal Investigator

SHINDOH Chiyohiko  東北大学, 医学系研究科, 名誉教授 (10216228)

Co-Investigator(Kenkyū-buntansha) 三浦 昌人  東北大学, 医学系研究科, 教授 (30302110)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords拡張障害 / 糖尿病 / ミトコンドリア / カルシウム / 心室筋 / グルコース値 / 心筋就職力 / 心筋収縮力 / カルシウム・ユニポーター / 心筋拡張障害
Outline of Research at the Start

心筋の拡張能障害を特徴の一つとする収縮の保たれた心不全が増加しているが、エビデンスのある治療法は未だ確立していない。本研究では、血糖値の上昇によるミトコンドリア内部へのカルシウム流入の低下が、ミトコンドリア内部のATP産生を低下させることよって心筋の拡張能障害を引き起こすのではないか、という仮説のもとに以下の解明を目指す。
1) 糖尿病ラットにおけるミトコンドリア内カルシウムと心筋拡張能の関係の解明
2) 心筋特異的ミトコンドリア・カルシウム・ユニポーター(MCU)欠損マウスを用いた糖尿病における MCU活性と心筋拡張能の関係の解明

Outline of Final Research Achievements

In the patients with diabetes mellitus (DM), mitochondrial calcium uptake through mitochondrial calcium uniporter (MCU) is decreased, and left ventricular (LV) diastolic function is disturbed. Thus, we investigated whether a decrease in mitochondrial calcium uptake due to an increase in blood glucose is involved in the LV diastolic dysfunction. In the present study, we obtained the following results: 1) an elevation of glucose increased arrhythmia susceptibility and decreased muscle contraction, 2) MCU expression was decreased, and diastolic function was disturbed in the myocardium of DM rats. These results suggest that mitochondrial calcium uptake may become a potential therapeutic target for diastolic dysfunction in the patients with DM.

Academic Significance and Societal Importance of the Research Achievements

2011年にミトコンドリア・カルシウム・ユニポーターMCUタンパクが特定されて以来、その制御因子を含めたミトコンドリア内へのカルシウム流入に関する研究が急速に進んでいる。このミトコンドリア内カルシウムがATP産生に関与すること、ミトコンドリア膜透過性遷移孔の開口による細胞死に関与することなど多くのことが明らかになりつつある。その一方で、臨床的には人口の高齢化により糖尿病患者の増加、拡張障害による心不全患者の増加が問題となっている。本研究は糖尿病におけるミトコンドリア内へのカルシウム流入の低下が心筋の拡張障害に関与することを示唆するものであり、これまでの国内外の研究を結びつけるものである。

Report

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

    (20 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (16 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Effect of transient elevation of glucose on contractile properties in non-diabetic rat cardiac muscle2021

    • Author(s)
      Miura M, Hasegawa T, Matsumoto A, Nishiyama M, Someya Y, Satoh W, Kumasaka K, Shindoh C, Sato H
    • Journal Title

      Heart Vessels

      Volume: 36 Issue: 4 Pages: 568-576

    • DOI

      10.1007/s00380-020-01726-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Transient Elevation of Glucose Increases Arrhythmia Susceptibility in Non-Diabetic Rat Trabeculae With Non-Uniform Contraction2020

    • Author(s)
      Miura M (Corresponding Author), Handoh T, Taguchi Y, Hasegawa T, Takahashi Y, Morita N, Matsumoto A, Shindoh C, Sato H
    • Journal Title

      Circulation Journal

      Volume: 84 Issue: 4 Pages: 551-558

    • DOI

      10.1253/circj.CJ-19-0715

    • NAID

      130007815608

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2020-03-25
    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Low-intensity pulsed ultrasound ameliorates cardiac diastolic dysfunction in mice: class FormattedString { value: A possible novel therapy for heart failure with preserved left ventricular ejection fraction }2020

    • Author(s)
      Monma Y, Shindo T, Eguchi K, Kurosawa R, Kagaya Y, Ikumi Y, Ichijo S, Nakata T, Miyata S, Matsumoto A, Sato H, Miura M, Kanai H, Shimokawa H
    • Journal Title

      Cardiovasc Res

      Volume: 117 Issue: 5 Pages: 1325

    • DOI

      10.1093/cvr/cvaa221

    • URL

      https://localhost/en/publications/4216fcf2-2862-4c3f-af2b-dedaf147701a

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechano-Electric and Mechano-Chemo-Transduction in Cardiomyocytes2020

    • Author(s)
      Izu LT, Kohl P, Boyden PA, Miura M, Banyasz T, Chiamvimonvat N, Trayanova N, Bers DM, Chen-Izu Y
    • Journal Title

      J Physiol

      Volume: 598.7 Issue: 7 Pages: 1285-1305

    • DOI

      10.1113/jp276494

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Stretch-activated Channels Play No Roles in Stretch-induced Twitch Contractions in Intact Rat Trabeculae2022

    • Author(s)
      Haruka Sato, Wakako Satoh, Kazunori Kumasaka, Chiyohiko Shindoh, Masahito Miura
    • Organizer
      第86回日本循環器学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Ca2+ Within the Mitochondria Can Affect the Occurrence of Triggered Arrhythmias in Rats with Right Ventricular Hypertrophy2021

    • Author(s)
      Kazunori Kumasaka, Haruka Sato, Wakako Satoh, Chiyohiko Shindoh, Masahito Miura
    • Organizer
      American Heart Association meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mitochondrial Connexin43 Can be Involved in the Occurrence of Arrhythmias2021

    • Author(s)
      Wakako Satoh, Kazunori Kumasaka, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      American Heart Association meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] CMR Feature Tracking Can Estimate Right Ventricular Functional Reserve in Rats with Pulmonary Arterial Hypertension2021

    • Author(s)
      Haruka Sato, Kazunori Kumasaka, Wakako Satoh, Chiyohiko Shindoh, Hideki Ota, Kawashima Ryuta, Masahito Miura
    • Organizer
      American Heart Association meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Muscle stretching induces twitch contractions without activation of stretch-activated channels in intact rat trabeculae2021

    • Author(s)
      Wakako Satoh, Haruka Sato, Kazunori Kumasaka, Chiyohiko Shindoh, Masahito Miura
    • Organizer
      European Society of Cardiology Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mitochondrial connexin43 is involved in the occurrence of arrhythmias with modulation of mitochondrial KATP channels2021

    • Author(s)
      Wakako Satoh, Kazunori Kumasaka, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      Heart Rhythm meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mitochondrial connexin43 affects the occurrence of arrhythmias with modulation of mitochondrial KATP channels2021

    • Author(s)
      Wakako Satoh, Masami Nishiyama, Yuka Someya, Kazunori Kumasaka, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      第85回日本循環器学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Ca2+ within the mitochondria in involved in the occurrence of arrhythmias in rat right ventricular hypertrophy2021

    • Author(s)
      Kazunori Kumasaka, Yuka Someya, Wakako Satoh, Masami Nishiyama, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      第85回日本循環器学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Right ventricular strain by CMR is an important parameter to assess right ventricular functional reserve with pulmonary arterial hypertension2021

    • Author(s)
      Haruka Sato, Yuka Someya, Masami Nishiyama, Wakako Satoh, Kazunori Kumasaka, Chiyohiko Shindoh, Hideki Ota, Masahito Miura
    • Organizer
      第85回日本循環器学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Mitochondrial connexin43 affects arrhythmogenesis with modulation of mitochondrial KATP channels2020

    • Author(s)
      Masami Nishiyama, Yuka Someya, Kazunori Kumasaka, Wakako Satoh, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      ESC Congress 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Ca2+ loading within mitochondria affects arrhythmogenesis in rat right ventricular hypertrophy2020

    • Author(s)
      Yuka Someya, Masami Nishiyama, Kazunori Kumasaka, Wakako Satoh, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      ESC Congress 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Right ventricular longitudinal strain with CMR can more accurately estimate right ventricular functional reserve in rats with pulmonary arterial hypertension2020

    • Author(s)
      Haruka Sato, Yuka Someya, Yui Takahashi, Masami Nishiyama, Ayana Matsumoto, Natsuki Morita, Chiyohiko Shindoh, Hideki Ota, Takuya Ueda, Ryuta Kawashima, Masahito Miura
    • Organizer
      ESC Congress 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] Mitochondrial connexin43 affects the occurrence of arrhythmias with the modulation of mitochondrial KATP channels2020

    • Author(s)
      Masami Nishiyama, Natsuki Morita, Yuka Someya, Yui Takahashi, Ayana Matsumoto, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      第84回日本循環器学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Right ventricular longitudinal strain with CMR more accurately estimates right ventricular contractile properties in rats with pulmonary arterial hypertension2020

    • Author(s)
      Yuka Someya, Yui Takahashi, Ayana Matsumoto, Natsuki Morita, Masami Nishiyama, Chiyohiko Shindoh, Hideki Ota, Haruka Sato, Masahito Miura
    • Organizer
      第84回日本循環器学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Mitochondrial Connexin43 and mitochondrial KATP channels affects the occurrence of arrhythmias2019

    • Author(s)
      Masami Nishiyama, Natsuki Morita, Yuka Someya, Yui Takahashi, Ayana Matsumoto, Chiyohiko Shindoh, Haruka Sato, Masahito Miura
    • Organizer
      92nd American Heart Association meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Elevation of glucose increases arrhythmias in rat myocardium with nonuniform contraction2019

    • Author(s)
      Ayana Matsumoto, Natsuki Morita, Yui Takahashi, Haruka Sato, Masahito Miura
    • Organizer
      第66回日本不整脈心電学会学術大会
    • Related Report
      2019 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi