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Elucidation of novel interactions between melatonin and bone metabolism regulating hormones / cytokines

Research Project

Project/Area Number 16K11442
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Morphological basic dentistry
Research InstitutionOkayama University

Principal Investigator

Ikegame Mika  岡山大学, 医歯薬学総合研究科, 准教授 (70282986)

Co-Investigator(Kenkyū-buntansha) 田中 みか子  奥羽大学, 歯学部, 非常勤講師 (20361909)
内部 健太  岡山大学, 大学病院, その他 (20584618)
江尻 貞一  朝日大学, 歯学部, 教授 (40160361)
服部 淳彦  東京医科歯科大学, 教養部, 教授 (70183910)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsメラトニン / 副甲状腺ホルモン / 骨粗鬆症 / 卵巣摘出 / PTH / 薬剤併用効果 / 骨組織 / サイトカイン / ホルモン / 骨代謝ホルモン / 骨形成 / 骨吸収
Outline of Final Research Achievements

Melatonin (Mel), a hormone known as a regulator of the circadian clock, has also been found to act on bone. We investigated the effects of Mel on bone tissue and the possibility that the combined use of an osteoporosis treatment drug and Mel would reduce the dose of the treatment drug and reduce side effects. As a result, it was shown for the first time that Mel stimulates the production of calcitonin (a bone resorption inhibitor) in bone. When the parathyroid hormone (PTH), which is one of the osteoporosis drugs, and Mel were simultaneously applied to the osteoporosis model rat (Ovx rat), the combined effect was different depending on the bone site. Moreover, regarding lipid metabolism, the combined use of PTH and Mel enhanced the suppressing effect on the weight gain observed in the Ovx rat.

Academic Significance and Societal Importance of the Research Achievements

超高齢化社会の進行に伴い激増する骨粗鬆症は、大きな社会問題であり、より安全でかつ骨形成促進効果のある治療法が切望されてきた。本研究結果により、骨の部位により、PTHとMelの相互作用に違いを生じることが示唆された点は、薬剤併用効果は単純ではなく、骨組織内で反応性が異なることを意味しており、学術的に意義深い。また、PTHとMelを併用することで、卵巣機能低下に伴う脂肪蓄積をより強力に抑制できたことは、今後、閉経後の脂質代謝異常を効果的に調節する方法の開発につながることが期待される。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2019 2018

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

  • [Journal Article] Suppressive effect of melatonin on osteoclast function via osteocyte calcitonin2019

    • Author(s)
      Nakano Masaki、Ikegame Mika、Igarashi-Migitaka Junko、Maruyama Yusuke、Suzuki Nobuo、Hattori Atsuhiko
    • Journal Title

      Journal of Endocrinology

      Volume: 242 Issue: 2 Pages: 13-23

    • DOI

      10.1530/joe-18-0707

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Melatonin is a potential drug for the prevention of bone loss during space flight2019

    • Author(s)
      Ikegame Mika、7名、Sekiguchi Toshio、43名、Suzuki Nobuo
    • Journal Title

      Journal of Pineal Research

      Volume: 67 Issue: 3 Pages: 1-13

    • DOI

      10.1111/jpi.12594

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 卵巣摘出ラットの骨粗鬆化における副甲状腺ホルモンとメラトニンの併用効果2019

    • Author(s)
      池亀美華、田中みか子、江尻貞一、服部淳彦、高尾亮子、内部健太、岡村裕彦
    • Organizer
      第124回日本解剖学会総会全国学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 骨粗鬆症モデルラットにおける副甲状腺ホルモンとメラトニンの併用効果2018

    • Author(s)
      池亀美華、田中みか子、江尻貞一、服部淳彦、高尾亮子、内部健太、岡村裕彦
    • Organizer
      第60回歯科基礎医学会学術大会
    • Related Report
      2018 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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