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Establishment of strategy of treatment for the group 3 pulmonary hypertension in a novel animal model

Research Project

Project/Area Number 19H03666
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionShinshu University

Principal Investigator

Hanaoka Masayuki  信州大学, 学術研究院医学系, 教授 (20334899)

Co-Investigator(Kenkyū-buntansha) 北口 良晃  信州大学, 学術研究院医学系(医学部附属病院), 講師 (40447751)
和田 洋典  信州大学, 医学部附属病院, 助教(診療) (80848739)
安尾 将法  信州大学, 学術研究院医学系(医学部附属病院), 講師 (20402117)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥13,520,000 (Direct Cost: ¥10,400,000、Indirect Cost: ¥3,120,000)
Fiscal Year 2021: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Keywords第3群肺高血圧症 / 肺気腫 / VEGF受容体阻害薬 / 低酸素 / 選択的肺血管拡張薬 / 組織貫通型ホーミングペプチド / ラット / 第3群肺高血圧症
Outline of Research at the Start

ラットに血管内皮成長因子(VEGF)受容体阻害薬であるSU5416を投与し、低酸素チャンバーにて6週間飼育することで、肺気腫と肺高血圧症を呈するラット(第3群肺高血圧症モデル)が完成する。このモデルを用いて、ホスホジエステラーゼ5(PDE-5)阻害薬や可溶性グアニル酸シクラーゼ(sGC)刺激薬など種々の肺血管拡張薬の効果、およびこれら薬剤と組織貫通型のホーミングペプチド(CAR)の同時投与による効果を検討し、第3群肺高血圧症治療への展開を目指す。

Outline of Final Research Achievements

The present study was to investigate the effects of combined administration of sildenafil and homing peptide (CAR) on the hemodynamic deterioration in the group 3 pulmonary hypertension rat model induced by vascular endothelial growth factor receptor inhibitor (SU5416) plus hypoxia. The mean linear intercept was significantly higher in the SU5416/hypoxia rats than the control rats, suggesting enlargement of airspaces in the SU5416/hypoxia rats. In addition, the mean pulmonary arterial pressure (mPAP) was significantly higher in the rats treated with SU5416/hypoxia than the control rats. However, this increase of mPAP in the SU5416/hypoxia rats was significantly inhibited by the concurrent treatment of sildenafil and CAR with an effective improvement of the pulmonary hemodynamics. The concurrent oral administration of sildenafil and CAR improves pulmonary hemodynamics in the rats exposed simultaneously to VEGF receptor inhibitor and hypoxia.

Academic Significance and Societal Importance of the Research Achievements

第3群肺高血圧症に対する薬物治療の選択肢として、肺血管拡張薬(シルデナフィル)とホーミングペプチド(CAR)併用療法が効果的である可能性が示唆された。第3群肺高血圧症患者に対する薬物療法は確立されておらず、治療方法および治療薬の開発にあたり、血管内皮成長因子(VEGF)受容体阻害薬と持続低酸素による本動物モデルの有用性が示唆された。

Report

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

    (10 results)

All 2021 2020 2019

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

  • [Journal Article] The Gly82Ser mutation in AGER contributes to pathogenesis of pulmonary fibrosis in combined pulmonary fibrosis and emphysema (CPFE) in Japanese patients2020

    • Author(s)
      Kinjo T, Kitaguchi Y, Droma Y, Yasuo M, Wada Y, Ueno F, Ota M, Hanaoka M
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 12811-12811

    • DOI

      10.1038/s41598-020-69184-8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Differences Between Central Airway Obstruction and Chronic Obstructive Pulmonary Disease Detected with the Forced Oscillation Technique2020

    • Author(s)
      Yasuo Masanori、Kitaguchi Yoshiaki、Tokoro Yayoi、Kosaka Makoto、Wada Yosuke、Kinjo Takumi、Ushiki Atsuhito、Yamamoto Hiroshi、Hanaoka Masayuki
    • Journal Title

      International Journal of Chronic Obstructive Pulmonary Disease

      Volume: Volume 15 Pages: 1425-1434

    • DOI

      10.2147/copd.s246126

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vascular endothelial growth factor gene (VEGF) polymorphisms in Sherpa highlanders2020

    • Author(s)
      Droma Y, Kinjo T, Nozawa S, Kobayashi N, Yasuo M, Hanaoka M
    • Journal Title

      Japanese Journal of Mountain Medicine

      Volume: 39 Pages: 32-37

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Assembly Symposium 15: Pulmonary Circulation: Topics of hypoxia induced pulmonary hypertension: 3) Experimental and clinical approach for pulmonary hypertension due to lung disease2021

    • Author(s)
      Masayuki Hanaoka
    • Organizer
      The 25th Congress of the Asian Pacific Society of Respirology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Activation of cleaved caspase 3 in young rats of emphysema with pulmonary hypertension induced by SU54162021

    • Author(s)
      Norihiko Goto, Yosuke Wada, Yoshiaki Kitaguchi, Masanori Yasuo, Masayuki Hanaoka
    • Organizer
      The 25th Congress of the Asian Pacific Society of Respirology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低酸素性肺血管攣縮(Hypoxic Pulmonary Vasoconstriction:HPV)と肺疾患 ―基礎から臨床― HPV総論2021

    • Author(s)
      花岡正幸
    • Organizer
      第61回日本呼吸器学会学術講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 教育講演:呼吸器疾患における肺高血圧症診療2021

    • Author(s)
      花岡正幸
    • Organizer
      第31回日本呼吸ケア・リハビリテーション学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] SU5416/低酸素暴露PHラットモデルにおけるシルデナフィル早期投与の効果2020

    • Author(s)
      後藤憲彦,和田洋典,北口良晃,安尾将法,花岡正幸
    • Organizer
      第5回日本肺高血圧・肺循環学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] III群肺高血圧症モデルを使用した肺高血圧症の病態解明2019

    • Author(s)
      安尾将法, 和田洋典, 北口良晃, 花岡正幸
    • Organizer
      第59回日本呼吸器学会学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Reduction of antioxidant activity in rats of emphysema with pulmonary hypertension induced by SU5416/Hypoxia: Potential roles of vascular endothelial growth factor2019

    • Author(s)
      Wada Y, Kitaguchi Y, Yasuo M, Hanaoka M
    • Organizer
      Asian Pacific Society of Respirology 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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

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