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Inflammation and tissue remodeling of pulmonary arterial hypertention associated with connective tissue disease - Immunohistochemical analysis

Research Project

Project/Area Number 18K15967
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionNational Cardiovascular Center Research Institute

Principal Investigator

Ohta-Ogo Keiko  国立研究開発法人国立循環器病研究センター, 病院, 医長 (30601827)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordspulmonary hypertension / collagen disease / inflammation / T-lymphocyte / macrophages / immunohistochemistry / 炎症細胞 / Tリンパ球 / 肺高血圧 / 膠原病 / 炎症 / 右心不全 / 肺高血圧症 / 循環器病理学 / 組織リモデリング
Outline of Final Research Achievements

In this study, autopsy cases were pathologically evaluated to clarify the inflammatory microenvironment in the lung tissue of pulmonary arterial hypertension associated with connective tissue disease (CTD-PAH). Histologically, the lesions in the lung tissues of patients other than systemic sclerosis were basically similar to those of idiopathic PAH and were often accompanied by pulmonary vein lesions, while systemic sclerosis typically had a pulmonary veno-occlusive disease (PVOD)-like morphology. Inflammation of the pulmonary veins as well as the pulmonary arteries was a characteristic feature of CTD-PAH. On the other hand, T lymphocyte and macrophage types in the inflammatory zone were similar between the CTD-PAH and idiopathic PAH or PVOD. The inflammatory microenvironment was implicated as a common contributor in the development of the conditions, based on the characteristics of helper T cells, cytotoxic T cells, M2 macrophages, proinflammatory cytokines, and chemokine receptors.

Academic Significance and Societal Importance of the Research Achievements

本研究において得られた、膠原病に伴う肺動脈性肺高血圧症が、組織学的に強皮症と強皮症以外でやや異なる形態をとること、しかし、いずれも肺動脈のみならず肺静脈の炎症も伴うことに特徴付けられるのは治療を考慮する上で重要なポイントである。今回確認された免疫担当細胞の特徴から想定される炎症性微小環境は、膠原病に伴う肺動脈性肺高血圧症に特異的なわけではなく、特発性肺動脈性肺高血圧症および肺静脈閉塞症とも共通したものであり、炎症をターゲットとした新規薬物治療に向けたヒトにおける基礎となる知見として意義があると考えられる。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (4 results) Presentation (5 results) (of which Invited: 1 results) Book (2 results)

  • [Journal Article] 病理でみる肺高血圧症2022

    • Author(s)
      大郷 恵子、大郷 剛
    • Journal Title

      Precision Medicine

      Volume: 5 Pages: 411-414

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 肺高血圧症の病理2020

    • Author(s)
      大郷 恵子, 植田 初江, 大郷 剛
    • Journal Title

      Heart View

      Volume: 24 Pages: 213-220

    • Related Report
      2019 Research-status Report
  • [Journal Article] 病理学および病理生物学2020

    • Author(s)
      大郷 恵子
    • Journal Title

      呼吸器内科

      Volume: 37 Pages: 220-226

    • Related Report
      2019 Research-status Report
  • [Journal Article] 肺高血圧の病理を知る2019

    • Author(s)
      大郷 恵子
    • Journal Title

      心エコー

      Volume: 20 Pages: 998-1007

    • Related Report
      2019 Research-status Report
  • [Presentation] 肺血管の病理: 臨床へのフィードバックに備える2023

    • Author(s)
      大郷恵子
    • Organizer
      第112回日本病理学会総会: 日本肺病理学会(JPPS)コンパニオンミーティング
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 病理でみる肺高血圧症 ー病理所見を臨床に活かすためにー2021

    • Author(s)
      大郷恵子
    • Organizer
      第6回日本肺高血圧・肺循環学会学術集会/第27回日本小児肺循環研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Pulmonary Vascular Remodeling and Inflammation in Pulmonary Arterial Hypertension Associated with Connective Tissue Diseases2020

    • Author(s)
      大郷恵子
    • Organizer
      第85回日本循環器学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 前毛細血管性肺高血圧症と後毛細血管性肺高血圧症の病理学的特徴2018

    • Author(s)
      大郷 恵子, 大郷 剛, 植田 初江
    • Organizer
      第66回 日本心臓病学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 肺高血圧症の病理2018

    • Author(s)
      大郷 恵子, 大郷 剛, 松本 学, 池田 善彦, 植田 初江
    • Organizer
      第40回 心筋生検研究会
    • Related Report
      2018 Research-status Report
  • [Book] 非腫瘍性疾患病理アトラス 肺2022

    • Author(s)
      大郷 恵子
    • Total Pages
      448
    • Publisher
      文光堂
    • ISBN
      9784830604867
    • Related Report
      2022 Annual Research Report
  • [Book] 別冊呼吸器症候群II2021

    • Author(s)
      大郷 恵子, 大郷 剛, 植田 初江, 畠山 金太
    • Publisher
      (株)日本臨床社
    • Related Report
      2021 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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