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Glucose instability associated with longitudinal changes in pancreatic function in type 2 diabetes

Research Project

Project/Area Number 22K17766
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionHokkaido University

Principal Investigator

Miya Aika  北海道大学, 大学病院, 特任助教 (80907064)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords血糖変動 / 内因性インスリン分泌 / 膵β細胞機能 / 持続血糖モニター / 2型糖尿病
Outline of Research at the Start

膵β細胞からのインスリン分泌量が2型糖尿病の血糖変動幅を予測しうることが明らかになってきた。しかし、膵β細胞の代謝産物がどのように経年的に変化し、血糖変動の不安定化に影響を及ぼすかに注目した研究はほとんどない。本研究は2型糖尿病患者に経年的に持続血糖モニター(CGM)を実施してリアルワールドにおける血糖変動を詳細に追跡し、膵β細胞代謝産物の変化量との関連を明らかにする。本研究は、2型糖尿病患者一人ひとりの膵β細胞機能の保持と血糖変動の安定化を目的とした介入を可能にし、糖尿病併存疾患の発症と増悪を阻止するための新たな治療アプローチの確立を目指すものである。

Outline of Final Research Achievements

The relationship between pancreatic β-cell function and blood glucose fluctuations was found in type 2 diabetes using serum proinsulin/C-peptide, a marker indicating early β-cell dysfunction. Elevated levels of serum proinsulin/C-peptide were found to be associated with both prolonged hyperglycemic periods extracted from continuous glucose monitoring and obesity. There was a suggestion that β-cell dysfunction might be associated with hyperglycemia .
In type 2 diabetes with preserved endogenous insulin secretion, the coefficient of variation of blood glucose fluctuations was not associated with abdominal fat area. However, as endogenous insulin secretion decreased, the magnitude of blood glucose fluctuations was related to a decrease in abdominal visceral fat area. An increase in visceral fat area was associated with instability of blood glucose fluctuations and prolonged hypoglycemic periods.

Academic Significance and Societal Importance of the Research Achievements

本研究で2型糖尿病患者における血清プロインスリンと血糖変動の関連について報告し、膵β細胞機能、内因性インスリン分泌能、体組成の関連性を新たな視点から探究した。その成果は、臨床現場での血糖変動幅の是正をねらった新たな治療アプローチの確立や、糖尿病合併症の発症と増悪の防止に貢献する可能性がある。また、2型糖尿病の病態解明に関連した幅広い研究分野に応用が期待できる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (6 results)

All 2024 2023 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Positive association between the proinsulin-to-C-peptide ratio and prolonged hyperglycemic time in type 2 diabetes2024

    • Author(s)
      Miya A, Nakamura A, Nomoto H, Kameda H, Atsumi T
    • Journal Title

      Endocrine Journal

      Volume: 71 Issue: 4 Pages: 403-408

    • DOI

      10.1507/endocrj.EJ23-0525

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inverse association between glucose variability and body fat in type 2 diabetes with impaired endogenous insulin secretion assessed using continuous glucose monitoring: A prospective observational study2023

    • Author(s)
      Miya Aika、Nakamura Akinobu、Suzuki Yuka、Nomoto Hiroshi、Kameda Hiraku、Cho Kyu Yong、Ito Yoichi M.、Nagai So、Miyoshi Hideaki、Atsumi Tatsuya
    • Journal Title

      Diabetes, Obesity and Metabolism

      Volume: - Issue: 7 Pages: 1883-1889

    • DOI

      10.1111/dom.15049

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] Unstable glucose variability in type 2 diabetes patients with small abdominal visceral fat area and impaired endogenous insulin secretion.2023

    • Author(s)
      Miya A, Nakamura A, Nomoto H, Kameda H, Cho KY, Nagai S. Ito MY, Miyoshi H, Atsumi T
    • Organizer
      American Diabetes Association Scientific Sessions
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 2型糖尿病における膵β細胞機能指標と血糖変動との関連2023

    • Author(s)
      宮愛香、中村昭伸、鈴木柚香、野本博司、亀田啓、曺圭龍、三好秀明、渥美達也
    • Organizer
      第66回日本糖尿病学会年次学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 内因性インスリン分泌が低下した2型糖尿病の血糖変動における内臓脂肪の関与2022

    • Author(s)
      宮 愛香, 中村 昭伸, 濱谷 柚香, 野本 博司, 亀田 啓, 曺 圭龍, 三好 秀明, 渥美 達也
    • Organizer
      第37回日本糖尿病合併症学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Unstable glucose variability in type 2 diabetes patients with small abdominal visceral fat area and impaired endogenous insulin secretion.2022

    • Author(s)
      Aika Miya, Akinobu Nakamura, Takahisa Handa, Hiroshi Nomoto, Hiraku Kameda, Kyu Yong Cho, So Nagai, Yoichi M. Ito, Hideaki Miyoshi, Tatsuya Atsumi
    • Organizer
      American Diabetes Association 82nd Scientific Sessions
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2025-01-30  

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