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The role of shear stress in the pathogenesis of chronic thromboembolic pulmonary hypertension

Research Project

Project/Area Number 20K08463
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research Institution独立行政法人国立病院機構岡山医療センター(臨床研究部)

Principal Investigator

Ogawa Aiko  独立行政法人国立病院機構岡山医療センター(臨床研究部), 独立行政法人国立病院機構 岡山医療センター(臨床研究部), 分子病態研究室長 (40572748)

Co-Investigator(Kenkyū-buntansha) 松原 広己  独立行政法人国立病院機構岡山医療センター(臨床研究部), 独立行政法人国立病院機構 岡山医療センター(臨床研究部), 副院長 (70252955)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords慢性血栓塞栓性肺高血圧症 / 肺動脈平滑筋細胞 / ずり応力 / マイクロ流路 / CTEPH / シグナル伝達 / 平滑筋細胞
Outline of Research at the Start

指定難病である慢性血栓塞栓性肺高血圧症(CTEPH)では,肺動脈平滑筋細胞(PASMC)などの過剰増殖により血管内腔が狭小化する.このような血管病変は,高いずり応力を来すと考えられる.したがって,本研究ではCTEPH患者の肺動脈内のずり応力を実測する.さらに,CTEPH患者由来PASMCを灌流培養し,ずり応力を負荷する.ずり応力によりPDGFや炎症性サイトカインなどの発現が制御されていることを示し,その機序を明らかにする.

Outline of Final Research Achievements

Chronic thromboembolic pulmonary hypertension (CTEPH) is caused by thromboemboli within the pulmonary vasculature that remain unresolved, become organized, and cause narrowing of the vascular lumen. These lesions result in abnormal blood flow (e.g., altered shear stress), but the pathophysiological significance remains unclear. This research project utilized CTEPH patient-derived blood and cellular samples to analyze the role of abnormal blood flow in CTEPH pathogenesis. Multiple soluble factors elevated in CTEPH patients compared to healthy controls were identified, and its involvement in CTEPH pathogenesis was assessed using patient-derived cells. A novel 3D in vitro model was furthermore developed to assess molecular/cellular mechanisms involved in CTEPH pathogenesis.

Academic Significance and Societal Importance of the Research Achievements

指定難病であるCTEPHは、急性肺塞栓症後に血栓が残存・器質化して発症するとされるが、その既往のない症例が多く、発症機序は未解明である。本研究では、CTEPH患者由来血清を解析し、CTEPH特異的なバイオマーカー候補となる、CTEPH患者で増加している血清因子を複数同定した。さらに、CTEPH患者由来細胞を用いた実験により、同定した因子の一部が病態進展に直接関わる可能性が示唆され、治療標的候補となりうることを示した。また、肺高血圧症研究に有用な立体培養モデルも確立した。これは、同定した血清因子のシグナル機序解析などを含め、CTEPHの病態進展機序の解析を推進する上で有用な基盤的技術となりうる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results)

  • [Journal Article] Oxygen inhalation can selectively dilate pulmonary arteries in patients with chronic thromboembolic pulmonary hypertension before balloon angioplasty2022

    • Author(s)
      Shigetoshi Masataka、Hatanaka Kunihiko、Ogawa Aiko、Tabuchi Isao、Shimokawahara Hiroto、Munemasa Mitsuru、Ito Hiroshi、Matsubara Hiromi
    • Journal Title

      Journal of Cardiology

      Volume: 79 Issue: 2 Pages: 265-269

    • DOI

      10.1016/j.jjcc.2021.09.003

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Outcome of mean pulmonary arterial pressure-based intensive treatment for patients with pulmonary arterial hypertension2022

    • Author(s)
      Sugiyama Yoichi、Matsubara Hiromi、Shimokawahara Hiroto、Ogawa Aiko
    • Journal Title

      Journal of Cardiology

      Volume: 80 Issue: 5 Pages: 432-440

    • DOI

      10.1016/j.jjcc.2022.04.003

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low incidence of restenosis after successful balloon pulmonary angioplasty in patients with chronic thromboembolic pulmonary hypertension2022

    • Author(s)
      Tabuchi Isao、Ogawa Aiko、Shigetoshi Masataka、Shimokawahara Hiroto、Ito Hiroshi、Matsubara Hiromi
    • Journal Title

      Cardiovascular Intervention and Therapeutics

      Volume: 38 Issue: 2 Pages: 231-240

    • DOI

      10.1007/s12928-022-00866-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Continual Improvement in Pressure Gradient at the Lesion after Balloon Pulmonary Angioplasty for Chronic Thromboembolic Pulmonary Hypertension2021

    • Author(s)
      Shimokawahara Hiroto、Nagayoshi Shinya、Ogawa Aiko、Matsubara Hiromi
    • Journal Title

      Canadian Journal of Cardiology

      Volume: - Issue: 8 Pages: 1232-1239

    • DOI

      10.1016/j.cjca.2021.03.009

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Should oral combination therapy be the standard of care for pulmonary arterial hypertension?2020

    • Author(s)
      Ogawa A, Matsubara H.
    • Journal Title

      Expert Rev Respir Med

      Volume: 28 Issue: 4 Pages: 1-3

    • DOI

      10.1080/17476348.2020.1722641

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3D in vitro Model of Vascular Medial Thickening in Pulmonary Arterial Hypertension2020

    • Author(s)
      Morii Chiharu、Tanaka Hiroyoshi Y.、Izushi Yasuhisa、Nakao Natsumi、Yamamoto Masaya、Matsubara Hiromi、Kano Mitsunobu R.、Ogawa Aiko
    • Journal Title

      Frontiers in Bioengineering and Biotechnology

      Volume: 8 Pages: 482-482

    • DOI

      10.3389/fbioe.2020.00482

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Increased levels of platelet-derived microparticles in pulmonary hypertension2020

    • Author(s)
      Ogawa Aiko、Matsubara Hiromi
    • Journal Title

      Thrombosis Research

      Volume: 195 Pages: 120-124

    • DOI

      10.1016/j.thromres.2020.07.030

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 第4章 肺高血圧症/肺血栓塞栓症 「肺高血圧症を認めた出産後の若年女性」2020

    • Author(s)
      小川 愛子
    • Journal Title

      Heart View

      Volume: 24 Pages: 131-137

    • Related Report
      2020 Research-status Report
  • [Presentation] 肺高血圧症に対する新規治療薬開発に資する三次元培養モデルの開発2022

    • Author(s)
      小川 愛子
    • Organizer
      公益財団法人臨床薬理研究振興財団 第15回研究報告会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 3D PAH Tissues2021

    • Author(s)
      Aiko Ogawa
    • Organizer
      American Heart Association Scientific Sessions 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 肺高血圧症の細胞生物学2021

    • Author(s)
      小川愛子
    • Organizer
      第6回日本肺高血圧・肺循環学会学術集会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Recent advances in diagnosis and management of pulmonary veno-occlusive disease/pulmonary Capillary hemangiomatosis2020

    • Author(s)
      Aiko Ogawa
    • Organizer
      第84回日本循環器学会学術集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] BPA Techniques in Segmental CTEPH: Tips and Tricks2020

    • Author(s)
      Aiko Ogawa
    • Organizer
      The International Society for Heart and Lung Transplantation ISHLTv
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] New Mechanism of Pulmonary Hypertension2020

    • Author(s)
      Aiko Ogawa
    • Organizer
      American Heart Association Scientific Sessions 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-04-28   Modified: 2024-01-30  

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