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Elucidation of pathophysiological mechanism of chronic inflammation and risk stratification of dilated cardiomyopathy.

Research Project

Project/Area Number 19H03442
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49020:Human pathology-related
Research InstitutionMie University

Principal Investigator

Imanaka-Yoshida Kyoko  三重大学, 医学系研究科, 教授 (00242967)

Co-Investigator(Kenkyū-buntansha) 植田 初江  国立研究開発法人国立循環器病研究センター, 病院, 客員研究員 (40522983)
田尻 和子  筑波大学, 医学医療系, 講師 (60633914)
奥村 貴裕  名古屋大学, 医学部附属病院, 病院講師 (60635598)
廣江 道昭  国立研究開発法人国立国際医療研究センター, その他部局等, 医師 (80101872)
宇都 健太  東京女子医科大学, 医学部, 助教 (80318071)
俵 功  三重大学, 医学系研究科, 教授 (80378380)
鈴木 忠樹  国立感染症研究所, 感染病理部, 部長 (30527180)
長谷川 秀樹  国立感染症研究所, インフルエンザ・呼吸器系ウイルス研究センター, センター長 (30301790)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords心筋炎 / 拡張型心筋症 / 炎症 / 慢性炎症
Outline of Research at the Start

拡張型心筋症(dilated cardiomyopathy: DCM)は様々な病因・病態の混合した疾患群の総称であり、慢性心筋炎は主要な原因の一つと考えられてきた。そのような症例は他のDCMと異なり免疫抑制療法による心不全進行抑制が期待されるが、現在、診断・治療指針はない。さらに、炎症細胞浸潤を伴う炎症性拡張型心筋症(inflammatory DCM: iDCM)という疾患群が提唱されるようになったが、慢性心筋炎と概念が混乱している。本研究では、慢性心筋炎の心筋生検組織を解析し、動物モデル実験による病態メカニズムの解明と並行しながら疾患概念を整理し、最適な治療法選択のための診断法確立を目指す。

Outline of Final Research Achievements

Dilated cardiomyopathy (DCM) is a heterogeneous group of myocardial diseases. Chronic myocarditis has been hypothesized to be one of the causes of DCM. Chronic myocarditis needs to be distinguished from other types of DCM because immunosuppressive agents may control disease progression. At present, endomyocardial biopsy is the only way for diagnosis, however, it needs a clear immunohistological criteria. We have performed a nationwide multicenter study of biopsy prove chronic myocarditis. Our data have suggested CD3+ T-lymphocytes count in the biopsied samples may be a risk-stratifying marker for poor long-term outcome and CD3+ > 24/mm2 could be a threshold for chronic myocarditis. Furthermore, to identify pathophysiological mechanism involved in progression of chronic myocarditis, we have developed a novel mouse model of chronic myocarditis induced by recombinant bacille Calmette-Guerin (rBCG) expressing a CD4+ T-cell epitope of cardiac myosin heavy chain-alpha.

Academic Significance and Societal Importance of the Research Achievements

拡張型心筋症(dilated cardiomyopathy: DCM)はいろいろな病因・病態の入り混じった疾患群の総称であり、慢性心筋炎は主要な原因の一つと考えられてきた。慢性心筋炎は遺伝子変異による他の型のDCMと異なり、免疫抑制剤によって進行を止めることができると考えられるが診断は難しい。本研究では心内膜心筋生検によって、理病原体感染の実態を明らかにするとともに組織診断基準を策定した。さらに、慢性心筋炎の動物モデルを確立して病態を解析することにより、炎症慢性化の分子メカニズムの一端が明らかになり、最適化治療法の選択や、新しい治療法の開発につながることが期待される。

Report

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

    (16 results)

All 2022 2021 2020

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

  • [Journal Article] Myocardial T-Lymphocytes as a Prognostic Risk-Stratifying Marker of Dilated Cardiomyopathy ― Results of the Multicenter Registry to Investigate Inflammatory Cell Infiltration in Dilated Cardiomyopathy in Tissues of Endomyocardial Biopsy (INDICATE Study) ―2022

    • Author(s)
      Ohta-Ogo, K. Sugano, Y. Ogata, S. Nakayama, T. Komori, T. Eguchi, K. Dohi, K. Yokokawa, T. Kanamori, H. Nishimura, S. Nakamura, K. Ikeda, Y. Nishimura, K. Takemura, G. Anzai, T. Hiroe, M. Hatakeyama, K. Ishibashi-Ueda, H. Imanaka-Yoshida, K.
    • Journal Title

      Circulation Journal

      Volume: 86 Issue: 7 Pages: 1092-1101

    • DOI

      10.1253/circj.CJ-21-0529

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2022-06-24
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] he Pathogenesis of Cardiac Fibrosis: A Review of Recent Progress.2022

    • Author(s)
      Maruyama K, Imanaka-Yoshida K
    • Journal Title

      Int J Mol Sci

      Volume: 23 Issue: 5 Pages: 2617-2617

    • DOI

      10.3390/ijms23052617

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical significance of chronic myocarditis: systematic review and meta-analysis.2021

    • Author(s)
      Hirono K, Takarada S, Okabe M, Miyao N, Nakaoka H, Ibuki K, Ozawa S, Origasa H, Ichida F, Imanaka-Yoshida K.
    • Journal Title

      Heart Vessels.

      Volume: 37 Issue: 2 Pages: 300-314

    • DOI

      10.1007/s00380-021-01914-y

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tenascin-C in Heart Diseases-The Role of Inflammation.2021

    • Author(s)
      Imanaka-Yoshida K
    • Journal Title

      Int J Mol Sci.

      Volume: 22 Issue: 11 Pages: 5828-5828

    • DOI

      10.3390/ijms22115828

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of Transgenic Mice that Conditionally Overexpress Tenascin-C2021

    • Author(s)
      Yonebayashi Saori、Tajiri Kazuko、Hara Mari、Saito Hiromitsu、Suzuki Noboru、Sakai Satoshi、Kimura Taizo、Sato Akira、Sekimoto Akiyo、Fujita Satoshi、Okamoto Ryuji、Schwartz Robert J.、Yoshida Toshimichi、Imanaka-Yoshida Kyoko
    • Journal Title

      Frontiers in Immunology

      Volume: 12 Pages: 620541-620541

    • DOI

      10.3389/fimmu.2021.620541

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new mouse model of chronic myocarditis induced by recombinant Bacille Calmette-Guerin expressing a T-cell epitope of cardiac heavy chain-α2021

    • Author(s)
      Tajiri, K., Imanaka-Yoshida, K., Tsujimura, Y., Matsuo, K., Hiroe, M., Aonuma, K., Ieda, M., Yasutomi, Y.
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 2 Pages: 794-809

    • DOI

      10.3390/ijms22020794

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Immune cell infiltration landscapes in pediatric acute myocarditis analyzed by CIBERSORT2021

    • Author(s)
      Kawada Jun-ichi、Takeuchi Suguru、Imai Hiroshi、Okumura Toshihiko、Horiba Kazuhiro、Suzuki Takako、Torii Yuka、Yasuda Kazushi、Imanaka-Yoshida Kyoko、Ito Yoshinori
    • Journal Title

      Journal of Cardiology

      Volume: 77 Issue: 2 Pages: 174-178

    • DOI

      10.1016/j.jjcc.2020.08.004

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inflammation in myocardial disease: From myocarditis to dilated cardiomyopathy2020

    • Author(s)
      Kyoko Imanaka-Yoshida
    • Journal Title

      Pathology International

      Volume: 70 Issue: 1 Pages: 1-11

    • DOI

      10.1111/pin.12868

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Chronic myocarditis and inflammatory DCM2021

    • Author(s)
      今中 恭子
    • Organizer
      第85回日本循環器学会総会 特別セッション慢性心筋炎とinflammatory DCM
    • Related Report
      2021 Annual Research Report
  • [Presentation] 心筋炎から拡張型心筋炎へ2021

    • Author(s)
      今中恭子
    • Organizer
      第25回日本心不全学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Tenascin-Cによる心血管の炎症と線維化の制御2021

    • Author(s)
      今中恭子
    • Organizer
      第53回日本動脈硬化学会シンポジウム 心血管と結合織
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 心筋炎2021

    • Author(s)
      今中恭子
    • Organizer
      第111回日本病理学会総会 ワークショップ心筋生検Up to Date
    • Related Report
      2021 Annual Research Report
  • [Presentation] 心血管における細胞外マトリックス分子Tenascin-Cの役割2021

    • Author(s)
      今中恭子
    • Organizer
      第164回日本獣医学会学術集会シンポジウム「細胞外マトリックス研究の現状と最新知見」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 慢性心筋炎と炎症性拡張型心筋症2020

    • Author(s)
      今中恭子
    • Organizer
      第56回日本小児循環器学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 心筋症の最近の話題:inflammatory DCMと慢性心筋炎2020

    • Author(s)
      今中恭子
    • Organizer
      第108回日本病理学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Diverse roles of tenascin-C in myocardial tissue repair.2020

    • Author(s)
      Kyoko Imanaka-Yoshida
    • Organizer
      FASEB science research conference: The Matricellular Proteins in Tissue Remodeling and Inflammation Conference.
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

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

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