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Analysis of epithelial lining fluid in a canine lung transplant model

Research Project

Project/Area Number 16K10692
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Respiratory surgery
Research InstitutionTokai University

Principal Investigator

IWASAKI Masayuki  東海大学, 医学部, 教授 (90223388)

Co-Investigator(Kenkyū-buntansha) 河野 光智  東海大学, 医学部, 准教授 (10276272)
増田 良太  東海大学, 医学部, 准教授 (10408057)
中川 知己  東海大学, 医学部, 准教授 (30439707)
大岩 加奈  東海大学, 医学部, 助教 (30548045)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords肺移植 / 気管支鏡下マイクロサンプリング法 / 気道上皮被覆液 / 炎症性サイトカイン / 虚血再灌流障害 / サイトカイン / 経気管支マイクロサンプリング法 / 拒絶反応 / 免疫抑制剤
Outline of Final Research Achievements

Ischemia-reperfusion injury resulting in post-transplant lung dysfunction involves a complicated network of cytokines that has yet to be fully investigated. We analyzed temporal changes in cytokine levels in epithelial lining fluid (ELF) from the distal airways of a canine lung transplantation model.ELF was collected via bronchoscopic microsampling, a minimally-invasive technique allowing repeated sampling. Concentrations of TNF-α and IL-6 significantly increased immediately after the start of lung reperfusion in the transplant group relative to the sham group (P < 0.005 and P < 0.05, respectively); both were sustained through the 5 hours. IFN-γ levels were significantly reduced 3 h after reperfusion started (P < 0.05). We found time- and cytokine-dependent changes in TNF-α, IL-6, and IFN-γ in ELF from the lung transplantation model. These specific changes in the cytokine profile may relate to the mechanism underlying post-transplant lung dysfunction.

Academic Significance and Societal Importance of the Research Achievements

肺移植は慢性進行性肺疾患に対する最終的な治療法として確立された。国際的な肺移植5年生存率約50%と比べ、本邦での5年生存率は約70%と優秀である。しかしながら、他の固形臓器移植と比較するとその成績は劣っていると言わざるを得ない。その要因は移植後に生じる様々な肺障害にある。本研究ではイヌ肺移植モデルに気管支鏡下マイクロサンプリング法BMSを用いて気道上皮被覆液ELFを採取し、虚血再潅流傷害に関与すると考えられる炎症性サイトカインのELF中の経時的濃度測定を行った。ドナー肺に生じる変化や状態の把握にELFの解析が有用である可能性が示唆され、治療成績の向上に役立つ可能性がある。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2017 2016

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Temporal changes of inflammatory cytokine profiles in epithelial lining fluid in a canine lung transplant model2017

    • Author(s)
      Atsushi Wada, Mitsutomo Kohno, Kana Oiwa, Ryo Hashimoto, Tomoki Nakagawa, Ryota Masuda, Kichizo Kaga, Masayuki Iwazaki
    • Journal Title

      Tokai journal of experimental and clinical medicine

      Volume: 42 Pages: 165-175

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Serial epithelial lining fluid collection using bronchoscopic microsampling in a canine lung transplantation model2016

    • Author(s)
      Kana Oiwa, Mitsutomo Kohno, Ryo Hashimoto, Tomoki Nakagawa, Ryota Masuda, Noboru Nishiumi, Kichizo Kaga, Masayuki Iwazaki
    • Journal Title

      Tokai journal of experimental and clinical medicine

      Volume: 41 Pages: 218-226

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Analysis of cytokines in epithelial lining fluid serially collected using bronchoscopic microsampling technique in a canine lung transplant model2017

    • Author(s)
      Ryo Hashimoto, Mitsutomo Kohno, Kana Oiwa, Tomoki Nakagawa, Ryota Masuda, Masayuki Iwazaki
    • Organizer
      25th European Conference on General Thoracic Surgery, Innsbruck, Austria, 28-31 May 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 肺移植モデル経気管支マイクロサンプリング法による虚血後再灌流肺と非再灌流肺のTNF-α濃度の比較2017

    • Author(s)
      大岩加奈、橋本諒、壺井貴明、矢ケ﨑秀彦、松﨑智彦、濱本篤、中川知己、河野光智、増田良太、岩﨑正之
    • Organizer
      第34回日本呼吸器外科学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 肺移植モデルにおける経気管支マイクロサンプリング法による気道上皮被覆液採取の安全性の検討2016

    • Author(s)
      大岩加奈, 橋本諒, 壺井貴朗, 矢ケ崎秀彦, 松崎智彦, 濱本篤, 中川知己, 河野光智, 増田良太, 岩崎正之
    • Organizer
      第69回日本呼吸器外科学会定期学術集会
    • Place of Presentation
      岡山コンベンションセンター(岡山県岡山市)
    • Year and Date
      2016-09-28
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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