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Is it necessary to prepare a dose-response curve for dose evaluation applied to metabolic syndrome?

Research Project

Project/Area Number 16K15569
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Radiation science
Research InstitutionHirosaki University

Principal Investigator

Miura Tomisato  弘前大学, 保健学研究科, 准教授 (20261456)

Co-Investigator(Kenkyū-buntansha) 阿部 悠  福島県立医科大学, 医学部, 助教 (00722472)
葛西 宏介  弘前大学, 保健学研究科, 講師 (50400148)
有吉 健太郎  弘前大学, 被ばく医療総合研究所, 助教 (50462750)
吉田 光明  弘前大学, 被ばく医療総合研究所, 教授 (60182789)
中田 章史  北海道科学大学, 薬学部, 准教授 (70415420)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsバイオドシメトリー / 慢性炎症 / 糖尿病 / 放射線生物影響 / 生物影響 / 染色体異常 / 二動原体染色体 / 2型糖尿病マウス / DNAフォーカス / 放射線被ばく / 放射線 / 被ばく医療 / 線量評価
Outline of Final Research Achievements

Inflammation contributes to increased risk of radiation damage. However, its reliability may be affected by the presence of chronic inflammation. As chronic inflammation-related diseases such as obesity and type 2 diabetes mellitus (T2DM) become more prevalent, it becomes an important point of consideration for dose estimation as many of the dose calibration curves are generated using ex vivo irradiated healthy human blood. The presence of chronic inflammation seemed to play a role in increasing the amount of chromosomal aberrations and DNA damage after radiation, which can affect dose estimation. Dic was the most radiation-specific biomarker, but it was also significa1ntly increased in the presence of chronic inflammation after irradiation. Despite an increase in DNA damage markers, histological analysis in the small intestine and spleen did not reveal clear differences between ob/ob and B6J mice.

Academic Significance and Societal Importance of the Research Achievements

同線量の被ばく線量にもかかわらず、2型糖尿病マウスでは野生型マウスに比べ染色体異常頻度やDNA損傷レベルが増加したことは、被ばく患者の生物学的線量評価において患者の生活習慣病等の健康状態を考慮した線量評価が必要となることを示唆している。さらに、糖尿病などの慢性炎症を有する患者では、DNA損傷レベルが増加する可能性があり、被ばく後の晩発影響の増悪化が危惧される。本研究は被ばく医療における線量評価や健康リスクの解明において、個人の健康状態の把握が必要となることを示唆しており、今後の緊急被ばく医療における課題を提示した。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2018 2017

All Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] The effects of chronic inflammation on chromosomal aberrations and DNA damage after 1.0 Gy X-ray irradiation in type 2 diabetes mouse model.2018

    • Author(s)
      Goh VST, Azumaya A, Ariyoshi K, Fujishima Y, Yoshida MA, Nakata A, Miura T
    • Organizer
      EPR BioDose 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The effect of chronic inflammation on chromosomal aberrations and radio-sensitive organs in T2DM mouse model.2018

    • Author(s)
      Goh VST, Azumaya A, Ariyoshi K, Fujishima Y, Yoshida MA, Nakata A, Miura T
    • Organizer
      The 5th Educational Symposium on Radiation and Health by young scientists
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The effects of chronic inflammation on chromosomal aberrations and radio-sensitive organs after X-ray radiation in T2DM model.2018

    • Author(s)
      Goh VST,東谷彩香,有吉健太郎,藤嶋洋平,吉田光明,中田章史,三浦富智
    • Organizer
      日本放射線影響学会第61回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 2型糖尿病マウスではX 線照射により誘導されるDNA 損傷および染色体異常が増加する2017

    • Author(s)
      東谷彩香、三浦富智
    • Organizer
      第3回北日本動物科学研究会
    • Place of Presentation
      新三川温泉(新潟県東蒲原郡阿賀町)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Research-status Report
  • [Presentation] DNA Damage and Chromosomal Aberrations Were Increased After X-ray Irradiation in Type 2 Diabetes Mouse Model2017

    • Author(s)
      Varelie Goh Swee Ting
    • Organizer
      4th Educational Symposium on RADIATION AND HEALTH by young scientists: ESRAH2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] DNA damage and chromosomal aberrations were increased after X-ray irradiation in type 2 diabetes mouse model.2017

    • Author(s)
      Valerie Goh Swee Ting,東谷彩香,有吉健太郎,藤嶋洋平,吉田光明,中田章史,三浦富智.
    • Organizer
      日本放射線影響学会第60回大会
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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