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Exploring diagnostic systems using exhaled breath analysis in chronic obstructive pulmonary disease.

Research Project

Project/Area Number 19K12816
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90130:Medical systems-related
Research InstitutionChiba University

Principal Investigator

Naoko Kawata  千葉大学, 真菌医学研究センター, 特任准教授 (00400896)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsCOPD / 呼気ガス / 画像診断 / 栄養指標 / 胸部CT / 胸部MRI / 慢性閉塞性肺疾患 / 肺気腫 / 呼気ガス分析
Outline of Research at the Start

スパイロメトリーを中心に行われてきたCOPD 診断、重症度評価を呼気ガス検査と組み合わせることにより、スパイロメトリーだけでは検出できないCOPD の病型(亜型)や肺の潜在能を検出し、さらに早期診断に役立てることでCOPD の新たな評価方法を見出したいと考えている。患者の呼気ガスは、採血と異なり、苦痛を与えず複数回の採取が可能な検体である。また、特殊な採取装置や点滴ルート、薬剤などを用いないため事前の入念な準備や人手が不要であり、有用性が見いだせれば臨床で用いられ、診療に直結する情報を提供できる可能性が高いと考えている。

Outline of Final Research Achievements

In the first year, 40 COPD patients underwent exhaled breath analysis. For low molecular weight, a significant association was found between the signal intensity of organic compounds with a mass number around 50 and 60 and obstructive impairment and emphysema. For high molecular weight, differences in the signal intensity of alkane organic compounds were found between healthy subjects and COPD patients. However, the COVID-19 pandemic has made breath analysis impossible since January 2020.
To assess the association with exhaled gases, CT was used to show that the COPD group with an asthmatic component underwent different structural changes than the COPD-only group. Dynamic MRI was also used to show an association with obstructive impairment and residual air volume. Furthermore, there was a strong association between subjective symptoms and nutritional indices and exacerbations in elderly COPD. This suggests the need for comprehensive medical care.

Academic Significance and Societal Importance of the Research Achievements

CCOPD患者における呼気ガス分析や、胸部CT画像による形態学的評価、胸部動態MRIによる動態解析は、現在の呼吸機能検査では評価できないCOPDの病型分類に貢献し、今後の新しい診断や評価方法となる可能性がある。また、超高齢社会において、COPDをはじめとする慢性進行性疾患の管理では、疾患重症度だけでなく栄養指標などを含む包括的な診療の必要性を示した。COVID-19流行収束後、呼気ガスから得られる所見と、画像を用いた肺の形態変化、栄養指標などの項目と組み合わせ、COPDの早期診断や疾患増悪との関連について解析予定である。

Report

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

    (12 results)

All 2023 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Semiautomatic assessment of respiratory dynamics using cine MRI in chronic obstructive pulmonary disease2022

    • Author(s)
      Sato Hirotaka、Kawata Naoko、Shimada Ayako、Iwao Yuma、Ye Chen、Masuda Yoshitada、Haneishi Hideaki、Tatsumi Koichiro、Suzuki Takuji
    • Journal Title

      European Journal of Radiology Open

      Volume: 9 Pages: 100442-100442

    • DOI

      10.1016/j.ejro.2022.100442

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Heterogeneity of Lung Density in Patients With Chronic Thromboembolic Pulmonary Hypertension (CTEPH)2022

    • Author(s)
      Nishiyama Akira、Kawata Naoko、Yokota Hajime、Hayano Koichi、Matsuoka Shin、Shigeta Ayako、Sugiura Toshihiko、Tanabe Nobuhiko、Ishida Keiichi、Tatsumi Koichiro、Suzuki Takuji、Uno Takashi
    • Journal Title

      Academic Radiology

      Volume: 29 Issue: 11 Pages: e229-e239

    • DOI

      10.1016/j.acra.2022.03.002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamic Quantitative Magnetic Resonance Imaging Assessment of Areas of the Lung During Free-Breathing of Patients with Chronic Obstructive Pulmonary Disease2022

    • Author(s)
      Shimada Ayako、Kawata Naoko、Sato Hirotaka、Ikari Jun、Suzuki Eiko、Anazawa Rie、Suzuki Masaki、Masuda Yoshitada、Haneishi Hideaki、Tatsumi Koichiro
    • Journal Title

      Academic Radiology

      Volume: 29 Pages: S215-S225

    • DOI

      10.1016/j.acra.2021.03.034

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Semi-automated Segmentation of Lungs Using the k-means Method in Cine MRI2021

    • Author(s)
      Sato Hirotaka、Kawata Naoko、Shimada Ayako、Suzuki Takuji
    • Journal Title

      Japanese Journal of Radiological Technology

      Volume: 77 Issue: 11 Pages: 1298-1308

    • DOI

      10.6009/jjrt.2021_jsrt_77.11.1298

    • NAID

      130008118961

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Objective quantitative multidetector computed tomography assessments in patients with combined pulmonary fibrosis with emphysema: Relationship with pulmonary function and clinical events2020

    • Author(s)
      Suzuki Masaki、Kawata Naoko、Abe Mitsuhiro、Yokota Hajime、Anazawa Rie、Matsuura Yukiko、Ikari Jun、Matsuoka Shin、Tsushima Kenji、Tatsumi Koichiro
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 9 Pages: e0239066-e0239066

    • DOI

      10.1371/journal.pone.0239066

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Longitudinal changes in structural lung abnormalities using MDCT in chronic obstructive pulmonary disease with asthma-like features2019

    • Author(s)
      Anazawa Rie、Kawata Naoko、Matsuura Yukiko、Ikari Jun、Tada Yuji、Suzuki Masaki、Takayanagi Shin、Matsuoka Shin、Matsushita Shoichiro、Tatsumi Koichiro
    • Journal Title

      PLOS ONE

      Volume: 14 Issue: 12 Pages: e0227141-e0227141

    • DOI

      10.1371/journal.pone.0227141

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] オプティカルフロー解析を用いたCOPDにおける横隔膜運動評価の検討2023

    • Author(s)
      佐藤広崇
    • Organizer
      第63回日本呼吸器学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 栄養指標による高齢/非高齢者群におけるCOPD増悪の予後予測2023

    • Author(s)
      鈴木英子
    • Organizer
      第63回日本呼吸器学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] COPDにおけるcine MRIを用いた横隔膜奇異性運動の定量評価の検討2022

    • Author(s)
      佐藤広崇
    • Organizer
      第62回日本呼吸器学会学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Longitudinal structural changes using MDCT in patients with combined pulmonary fibrosis with emphysema2021

    • Author(s)
      Ayako Shimada
    • Organizer
      European Respiratory Society
    • Related Report
      2021 Research-status Report
  • [Presentation] Expiratory gas analysis using mass spectrometry in chronic obstructive pulmonary disease2019

    • Author(s)
      Naoko Kawata
    • Organizer
      European Respiratory Society
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] COPD 診断と治療 高感度ガス分析装置を用いたCOPD患者における呼気ガス成分の検討2019

    • Author(s)
      川田奈緒子
    • Organizer
      日本呼吸器学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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