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Development of a novel strategy of circulatory management of septic shock with modulation of splanchnic hemodynamics.

Research Project

Project/Area Number 20K09317
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55060:Emergency medicine-related
Research InstitutionKansai Medical University

Principal Investigator

KUWAGATA Yasuyuki  関西医科大学, 医学部, 教授 (50273678)

Co-Investigator(Kenkyū-buntansha) 室谷 卓  関西医科大学, 医学部, 講師 (20528434)
池側 均  関西医科大学, 医学部, 准教授 (80379198)
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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords敗血症性ショック / エンドトキシン / 恐怖臭物質 / 上腸間膜静脈血流 / 空腸粘膜組織血流 / sepsis / endotoxin / fear odors / splanchnic circulation / circulatory shock / nitric oxide / iNOS / NOMI
Outline of Research at the Start

敗血症ショックの致命的な病態生理には組織血流障害・酸素代謝異常による臓器不全発症が深く関与している。本研究では腸管循環系の循環調節機序の破綻に焦点をあて、その発生メカニズムを解明するとともに制御法の開発を目指す。循環動態破綻の主座として腸管循環系制御、非閉塞性腸管壊死や腸絨毛機能異常発生の抑止を通じて、臓器不全発症を抑制し救命率の向上に寄与することを目的とする。我々が独自に確立したマクロ動物モデルを用いて、1.敗血症ショックに昇圧介入した際に生じる腸管循環異常の病態生理と発生機序を解明し、2.腸管壁および粘膜血流分配異常の発生を抑制する循環管理法を開発し、臨床における治療成績向上へと繋ぐ。

Outline of Final Research Achievements

This study aimed to explore a novel strategy of circulatory management of septic shock with modulation of splanchnic hemodynamics. We focused on 2-methyl-2thiazoline (2MT), which has been reported to inhibit inflammatory cytokines in septic animals. 2MT is one of the thiazoline-related fear odors, which were developed as a group of artificial odor molecules that induce innate fear-related behaviors in animals. A single i.v. dose of 2MT at 80mg increased arterial pressure without changes in cardiac output in intact rabbits, indicating that 2MT acts as a simple vasoconstrictor. 2MT at the same dosage significantly inhibited LPS-induced hemodynamic derrangement as indicated by restoration of MAP and improvement of blood flow both in superior mesenteric vein and jejunal mucosal tissue. 2MT may play a significant role in the development of a novel circulatory management against septic shock.

Academic Significance and Societal Importance of the Research Achievements

敗血症性ショックは、現在集中治療室内における死因の1位をしめる病態である。その理想的な治療法は、病的な血管運動姓メディエータの制御であるが、いまだ成し遂げられていない。国際診療ガイドラインにおいてもnoradrenalineなどの血管収縮薬投与による対症療法に終始しているのが現実である。本研究は人工臭気物質の一つである2MTが、現行の血管収縮薬投与でもっとも虚血の生じやすい部位である腸管粘膜血流を維持しながら腸管循環の病的血管抵抗減弱を制御し、体循環のショックを改善することを明らかにした。臓器虚血の発生を阻止しながら敗血症性ショックを治療する可能性を示唆しており、学術的・社会的意義は大きい。

Report

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

    (3 results)

All 2022 2021 2020

All Journal Article (3 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results)

  • [Journal Article] EFFECTS OF 2-METHYL-2-THIAZOLINE ON CIRCULATORY DYNAMICS AND INTESTINAL VASCULAR SYSTEM IN RABBITS WITH ENDOTOXIC SHOCK2022

    • Author(s)
      Onoe Atsunori、Muroya Takashi、Nakamura Fumiko、Ikegawa Hitoshi、Kuwagata Yasuyuki、Kobayakawa Reiko、Kobayakawa Ko
    • Journal Title

      Shock

      Volume: 58 Issue: 4 Pages: 341-347

    • DOI

      10.1097/shk.0000000000001987

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Norepinephrine on the Intestinal Vascular System in Rabbits With Endotoxic Shock2021

    • Author(s)
      Nakamura Fumiko、Muroya Takashi、Onoe Atsunori、Ikegawa Hitoshi、Kuwagata Yasuyuki
    • Journal Title

      Shock

      Volume: 55 Issue: 6 Pages: 827-831

    • DOI

      10.1097/shk.0000000000001663

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of fecal short‐chain fatty acids on prognosis in critically ill patients2020

    • Author(s)
      Nakahori Yasutaka、Shimizu Kentaro、Ogura Hiroshi、Asahara Takashi、Osuka Akinori、Yamano Shuhei、Tasaki Osamu、Kuwagata Yasuyuki、Shimazu Takeshi
    • Journal Title

      Acute Medicine & Surgery

      Volume: 7 Issue: 1

    • DOI

      10.1002/ams2.558

    • Related Report
      2020 Research-status Report

URL: 

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

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