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Pathological analysis of the arteries after endovascular treatment for lower extremity artery disease

Research Project

Project/Area Number 20K17097
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53020:Cardiology-related
Research InstitutionTokai University

Principal Investigator

TORII Sho  東海大学, 医学部, 講師 (80816570)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsMedial calcification / Monckeberg calcification / Peripheral artery / LEAD / Hemodialysis / CLTI / Endovascular therapy / 閉塞性下肢動脈硬化症 / 包括的高度慢性下肢虚血 / 病理 / 透析患者 / 内膜石灰化 / 中膜石灰化 / 経皮的血管形成術 / 重症下肢虚血 / 動脈硬化 / 石灰化 / 透析 / 下肢閉塞性動脈硬化症 / 経皮的血管拡張術 / 閉塞性動脈硬化症
Outline of Research at the Start

EVTのデバイスは、冠動脈形成術(PCI)のデバイスのテクノロジーを踏襲して開発されてはいるものの、PCIよりも明らかに治療後の成績が悪い事は知られている。
元の動脈硬化病変の形態、進行過程も違うはすでに明らかにされており、下肢動脈に対するEVT後の病理学的検討を行わない事には、将来のEVTの治療成績向上は望めない。
しかし、本研究のようにEVT後の下肢動脈を病理学的に検討した研究は世界でも例がなく、今後のEVTの治療成績の改善、ひいてはPAD患者の下肢切断数の減少、予後改善に向けての礎となりうる研究である。

Outline of Final Research Achievements

In this study, specimens that were amputated or pathologically dissected in the lower extremity despite endovascular treatment were collected and the post-treatment vessels were examined pathologically. Seventy-seven arteries were collected, resulting in a total of 2,319 pathological sections.
About half of the specimens collected were from dialysis patients, and the evaluation focused on the differences in the progression of atherosclerosis between dialysis and non-dialysis patients.
Results showed that dialysis patients differed more markedly from non-dialysis patients in terms of medial calcification than did non-dialysis patients. The differences were particularly pronounced in the below-knee lesions of non-dialysis patients, suggesting that hemodialysis play an important role in the mechanism of calcification.

Academic Significance and Societal Importance of the Research Achievements

本研究において透析患者と非透析患者の下肢動脈の動脈硬化、および石灰化の進行過程の違いが病理学的に明らかになった事により、
1、透析患者に対する血管内治療の際にしばしば見受けられる高度石灰化病変に対する治療方針が変わる可能性がある
2、透析そのものが中膜の石灰化のリスクである事を示した事により今後の石灰化に関わる基礎研究において有益な情報になりうる

Report

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

    (4 results)

All 2022

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Pathography of Superficial Femoral Artery Treated With ELUVIA<sup>TM</sup> Paclitaxel Eluting Stent2022

    • Author(s)
      Matsumoto Yuki、Torii Sho、Morino Yoshihiro
    • Journal Title

      Circulation Journal

      Volume: 86 Issue: 6 Pages: 1021

    • DOI

      10.1253/circj.CJ-21-0984

    • NAID

      130008139808

    • ISSN
      1346-9843, 1347-4820
    • Year and Date
      2022-05-25
    • Related Report
      2022 Annual Research Report
  • [Journal Article] A Case of Vasculitis Due to Distal Particulate Embolization After Use of Drug-Coated Balloon2022

    • Author(s)
      Nakamura Ryoko、Torii Sho、Kato Tsukasa、Kawasaki Daizo
    • Journal Title

      JACC: Cardiovascular Interventions

      Volume: 15 Issue: 14 Pages: 1486-1487

    • DOI

      10.1016/j.jcin.2022.05.030

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] Pathological analysis of hemodialysis’ impact on medial and intimal calcification for lower extremity artery disease2022

    • Author(s)
      Tsukasa Kato, Sho Torii, Norihito Nakamura, Kazuki Aihara, Yuta Terabe, Osamu Iida, Takahiro Tokuda, Tatsuya Nakama, Yo Kawahara, Junichi Miyamoto, Takafumi Saito, Norihiko Kamioka, Tsutomu Murakami, Takeshi Ijichi, Makoto Natsumeda, Shigemitsu Tanaka, Yohei Ohno, Gaku Nakazawa, Hiroyuki Watanabe, and Yuji Ikari
    • Organizer
      第86回 日本循環器学会学術集会
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pathological differences of peripheral artery disease between patients with hemodialysis and non-hemodialysis.2022

    • Author(s)
      Tsukasa Kato, Sho Torii, Kazuki Ahiara, Norihito Nakamura, and Yuji Ikari
    • Organizer
      第86 回日本循環器学会学術集会
    • Related Report
      2021 Research-status Report

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

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