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Circadian rhythm determination of oral inflammation using fluorescence imaging

Research Project

Project/Area Number 19K10394
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57070:Developmental dentistry-related
Research InstitutionHealth Sciences University of Hokkaido

Principal Investigator

NISHIDE Shinya  北海道医療大学, リハビリテーション科学部, 講師 (40451398)

Project Period (FY) 2019-04-01 – 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 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords概日リズム / 蛍光イメージング / 炎症 / 口腔保健 / 歯髄炎 / 小児 / 行動解析
Outline of Research at the Start

体温やホルモン分泌、唾液分泌など体の機能の多くには約24時間周期の概日リズムがある。夜型や不規則な生活習慣は概日リズムを乱し、肥満や生活習慣病の原因となることが過去の研究で明らかになっている。本研究は概日リズムの乱れが虫歯など口腔疾患にも影響するかどうかを調べるために行う。特に小児期は概日リズムが未発達であり、概日リズムが乱れやすいため、小児期の虫歯を想定した動物実験を行う。

Outline of Final Research Achievements

For the future purpose of measuring the circadian rhythm observed in the inflammatory response of the dental pulp, in this study, the inflammatory marker MAPK activity was measured by FRET using mammalian cultured cell lines. In this study, we selected ERK and JNK from the MAPK molecule group, created biosensors, and transfected them into cultured cells. When cells were treated with proinflammatory substances at various times, MAPK responses were shown to change in a time-dependent manner. In addition, with the aim of introducing biosensors into animals and setting up a system to analyze the relationship between circadian rhythms and inflammatory responses in animals, we constructed a system to measure the behavioral rhythms of mice 24 hours a day, and measured the circadian rhythms.

Academic Significance and Societal Importance of the Research Achievements

体温やホルモン分泌、唾液分泌など体の機能の多くには約24時間周期の概日リズムがある。夜型や不規則な生活習慣は概日リズムを乱し、肥満や生活習慣病の原因となることが過去の研究で明らかになっている。本研究は概日リズムの乱れが虫歯など口腔内の炎症性疾患の症状に影響するかどうかを検討するために行った。本研究において細胞内で炎症時にはたらく分子の挙動を蛍光タンパク質で観察することができるシステムを構築することができ、口腔内の炎症はもとより全身の様々な炎症性疾患の一日の中の変動を分析することが可能になった。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2019

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

  • [Journal Article] The food-entrainable oscillator is a complex of non-SCN activity bout oscillators uncoupled from the SCN circadian pacemaker2021

    • Author(s)
      Nishide, S., Suzuki, Y., Ono, D., Honma, S., and Honma, K.
    • Journal Title

      Journal of Biological Rhythms

      Volume: 36(6) Issue: 6 Pages: 575-588

    • DOI

      10.1177/07487304211047937

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Daily life habits associated with eveningness lead to a higher prevalence of dental caries in children2019

    • Author(s)
      Shinya Nishide, Toshihiro Yoshihara, Hirohisa Hongo, Takashi Kanehira, Yasutaka Yawaka
    • Journal Title

      Journal of Dental Sciences

      Volume: 印刷中 Issue: 3 Pages: 302-308

    • DOI

      10.1016/j.jds.2019.01.015

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Peptide Derived from Phosphoinositide 3-kinase Inhibits Endocytosis and Influenza Virus Infection2019

    • Author(s)
      Fujioka Y, Satoh AO, Horiuchi K, Fujioka M, Tsutsumi K, Sasaki J, Nepal P, Kashiwagi S, Paudel S, Nishide S, Nanbo A, Sasaki T, Ohba Y
    • Journal Title

      Cell Structure and Function

      Volume: 44 Issue: 1 Pages: 61-74

    • DOI

      10.1247/csf.19001

    • NAID

      130007636814

    • ISSN
      0386-7196, 1347-3700
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Correlations between prevalence of dental caries and circadian rhythms in children2021

    • Author(s)
      Nishide Shinya, Yawaka Yasutaka
    • Organizer
      歯科基礎医学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Two coupled molecular loops in the mouse circadian system: Implication in entrainment.2019

    • Author(s)
      Nishide S, Honma K, Honma S.
    • Organizer
      XVI Congress of the European biological rhythms society,
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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