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Novel method to evaluate nature of vessel wall in athrosclerosis by fluorescent probes reacting specific protease for vascular surgery

Research Project

Project/Area Number 20K09119
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionThe University of Tokyo (2020, 2022)
Kawasaki Medical School (2021)

Principal Investigator

Akagi Daisuke  東京大学, 医学部附属病院, 届出研究員 (20464753)

Co-Investigator(Kenkyū-buntansha) 高山 利夫  東京大学, 医学部附属病院, 講師 (80802694)
保科 克行  東京大学, 医学部附属病院, 准教授 (90571761)
石原 聡一郎  東京大学, 医学部附属病院, 教授 (00376443)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsアミノペプチダーゼ / 動脈壁 / 動脈疾患 / 大動脈瘤 / 閉塞性動脈疾患 / 酵素反応 / 正常動脈 / 閉塞性動脈疾患 LEAD / 動脈瘤 / 動脈硬化 / アミノペプチダーゼ反応蛍光プローベ / 動脈性状 / プラーク / 健常動脈
Outline of Research at the Start

動脈硬化は全身性疾患であり、画像診断上あるいは術中の触診上一見硬化性変化が乏しい病変であっても実際は硬化性変化を認めることは多い。血行再建手術において「健常」部を判断するが、術者の主観によらない「健常」の定義は現時点では困難であり、その理由は生化学的な客観的評価基準はないためである。本研究では特異的な酵素活性により蛍光発光を得るアミノペプチダーゼ反応プローベに注目し、動脈硬化病変といわゆる「健常部」で反応性の異なるプローベの発見を目指す。このプローベの臨床応用を目指すとともに、プローベに反応するターゲット酵素を同定する。この結果より、将来的にはターゲット酵素から創薬研究への応用を考えている。

Outline of Final Research Achievements

At performing vascular surgery, “healthiness" in vasculature is determined by the surgeon's experience and gross findings. However, an appropriate and objective definition of "healthiness" for arteries with atherosclerosis or degeneration is needed. We examined enzyme activity in arterial tissue using a probe that combines fluorescence and aminopeptidase, which reacts to specific enzymes. Aortic walls that were considered healthy and aortic aneurysm walls that were dilated and in danger of rupturing were collected. Differences in reactivity were detected in each among more than 300 different probes. The Diced Electrophoresis Gel (DEG) method, a two-dimensional electrophoresis technique, was then used to identify the enzymes found in the “healthy" arterial wall.

Academic Significance and Societal Importance of the Research Achievements

本研究で用いたプローブは、組織に噴霧するだけで短時間で酵素を特異的に検出できる画期的な技術である。時間的に制限のある手術や処置においても充分対応可能と考えられる。血管の健常性を担保する酵素の同定は学問的に動脈硬化、変性、加齢などの学術的研究に寄与するだけでなく、適切な手術術式の選択に寄与する可能性が高く、その社会的意義は高い。

Report

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

    (19 results)

All 2022 2021 2020

All Journal Article (7 results) (of which Peer Reviewed: 6 results) Presentation (12 results) (of which Int'l Joint Research: 2 results,  Invited: 6 results)

  • [Journal Article] A Case of Popliteal Artery Aneurysm Repair with Superficial Femoral Vein Graft2022

    • Author(s)
      Tamura T, Akagi D, Tabuchi A, Yunoki Y, Yamane N, Kuwada N, Yamasawa T, Watanabe Y, Kanaoka Y, Tanemoto K.
    • Journal Title

      The Journal of Japanese College of Angiology

      Volume: 62 Issue: 4 Pages: 15-20

    • DOI

      10.7133/jca.21-00024

    • ISSN
      0387-1126, 1880-8840
    • Year and Date
      2022-04-10
    • Related Report
      2021 Research-status Report
  • [Journal Article] Successful endovascular repair of iliac artery aneurysms with unsuitable anatomy by combining unibody bifurcated endograft and iliac branch systems to preserve hypogastric artery blood flow: a report of two cases.2022

    • Author(s)
      Akagi D, Murase K.
    • Journal Title

      J Cardiothorac Surg.

      Volume: 17 Issue: 1 Pages: 93-93

    • DOI

      10.1186/s13019-022-01855-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Systemic single administration of anti-inflammatory microRNA 146a-5p loaded in polymeric nanomedicines with active targetability attenuates neointimal hyperplasia by controlling inflammation in injured arteries in a rat model2022

    • Author(s)
      Sano M, Akagi D, Naito M, Hoshina K, Miyata K, Kataoka K, Ishihara S
    • Journal Title

      FASEB J

      Volume: 36 Issue: 9

    • DOI

      10.1096/fj.202101481r

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Endovascular Stent Graft Placement and Coil Embolization for Splenic Artery Aneurysm with an Anatomical Variant2022

    • Author(s)
      Kuwada N, Akagi D, Watanabe Y, Kanaoka Y, Tanemoto K.
    • Journal Title

      Int J Angiol

      Volume: in press Issue: 04 Pages: 81-81

    • DOI

      10.1055/s-0042-1742588

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Clinical Impact of Stent Graft Thrombosis in Femoropopliteal Arterial Lesions.2021

    • Author(s)
      Ichihashi S, Takahara M, Iida O, Suzuki K, Yamaoka T, Maeda K, Tobita K, Kobayashi T, Nakama T, Shingaki M, Ozaki S, Akagi D, Soga Y, Iwakoshi S, Fujimura N, Kichikawa K.
    • Journal Title

      JACC Cardiovasc Interv.

      Volume: 14 Issue: 10 Pages: 1137-1147

    • DOI

      10.1016/j.jcin.2021.03.030

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Short interposition with a small-diameter prosthetic graft for flow reduction of a high-flow arteriovenous fistula2021

    • Author(s)
      Hashimoto Takuya、Akagi Daisuke、Yamamoto Satoshi、Suhara Masamitsu、Sato Osamu、Deguchi Juno
    • Journal Title

      Journal of Vascular Surgery

      Volume: 73 Issue: 1 Pages: 285-290

    • DOI

      10.1016/j.jvs.2020.05.035

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 血行再建術後内膜肥厚の基盤となる炎症制御に注目した治療戦略―抗炎症性脂質メディエーター(SPM)の可能性―.2020

    • Author(s)
      赤木大輔
    • Journal Title

      脈管学

      Volume: 60 Pages: 197-203

    • NAID

      130007937882

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] シンポジウム下腿足部の血行再建方法 ストラテジーとその実際2022

    • Author(s)
      赤木大輔、橋口大毅、丁サムエル 、田村太志、桒田憲明、山澤隆彦、渡部芳子、柚木靖弘、田淵篤、金岡祐司、種本和雄.
    • Organizer
      第50回日本血管外科学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] パネルディスカッション社会的問題 高齢者治療の限界 超高齢者に対する血管内治療の限界 - ”負けない治療”を目指して2022

    • Author(s)
      赤木大輔
    • Organizer
      第28回日本血管内治療学会総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 慢性静脈不全の分類と診断2022

    • Author(s)
      赤木大輔
    • Organizer
      JET (Japan Endovascular Treatment Conference) 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 慢性静脈疾患評価指標;Quality of Life (QOL)指標とCEAP分類改訂2022

    • Author(s)
      赤木大輔
    • Organizer
      第42回日本静脈学会総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 表在静脈血栓症の診断と治療2022

    • Author(s)
      赤木大輔、田淵篤、丁サムエル、橋口大毅、田村太志、桒田憲明、山澤隆彦、渡部芳子*、柚木靖弘、金岡祐司、種本和雄
    • Organizer
      第42回日本静脈学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 血管内治療ワークショップ (EVT-WS) が若手血管外科医育成に果たす役割 (心臓血管外科専門医指導医講習会).2021

    • Author(s)
      赤木大輔.
    • Organizer
      第49回日本血管外科学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 当科におけるGVGに基づくCLTI治療戦略の検討.2021

    • Author(s)
      赤木大輔.
    • Organizer
      第51回日本心臓血管外科学会学術総会.
    • Related Report
      2021 Research-status Report
  • [Presentation] 静脈疾患の基礎と評価指標.2021

    • Author(s)
      赤木大輔.
    • Organizer
      JET (Japan Endovascular Treatment Conference) educational course.
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 伏在静脈不全に対するベナシール治療の初期成績.2021

    • Author(s)
      赤木大輔.
    • Organizer
      第41回日本静脈学会総会
    • Related Report
      2021 Research-status Report
  • [Presentation] Real safety and preventing retreatments in femoro-popliteal EVT with drug devices.2020

    • Author(s)
      Akagi D, Seo A and Nemoto Y.
    • Organizer
      The 48th Annual Meeting of Japanese Society for Vascular Surgery.
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 「血管外科医の最前線 (2) 」 ~中堅血管外科医から~ 4年間で変わったこと、変わらなかったこと.2020

    • Author(s)
      赤木大輔.
    • Organizer
      第15回Japan Endovascular Symposium (JES).
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 外科的血行再建手術と血管内治療を併施した「ハイブリッドPAD治療」の実際と次世代への展開.2020

    • Author(s)
      赤木大輔、瀬尾明彦、根元洋光.
    • Organizer
      第61回日本脈管学会総会.
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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