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Effect of AGE and P-LPS on sclerotin expression in osteocytes

Research Project

Project/Area Number 16K20674
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Periodontology
Research InstitutionThe University of Tokushima

Principal Investigator

SAKAMOTO Eijiro  徳島大学, 病院, 助教 (70771624)

Research Collaborator KIDO Jun-ichi  
INAGAKI Yuji  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords糖尿病 / 歯周病 / 糖尿病関連歯周炎 / 糖尿病合併症 / 最終糖化産物 / リポ多糖 / スクレロスチン / スクレロスチン抗体 / LPS / 骨細胞
Outline of Final Research Achievements

Periodontitis is one of the diabetes complication. Advanced glycation-end product (AGE) cases several diabetes complication, and LPS from P.gingivalis was clarified to inhibit the osteoblastic differentiation. Therefore, we investigated effect of AGE and P-LPS on the function of osteocytes.
AGE and P-LPS increased sclerotin (SOST) expression in osteocytes. The mechanisms of SOST expression was related to RAGE, TLR2, MAPK and NF-kB. Moreover, AGE-associated SOST inhibited osteoblastic differentiation, and it was recovered by SOST antibody. These results suggested that AGE and P-LPS have important roles in aggravation of diabetes-related periodontitis.

Academic Significance and Societal Importance of the Research Achievements

わが国の糖尿病患者は予備軍を含めると2000万人と言われている。また一方、歯周病は成人の80%が何らかの歯周病の症状をもつと言われており、ともに極めて罹患率の高い疾患である。すでに明らかになっているように歯周病は糖尿病の合併症の1つであり、その原因解明と治療法の確立は急務と考える。本研究ではその原因がスクレロスチンの過剰分泌にあることを見出し、さらにその中和抗体によって抑制された骨代謝機能が回復することを明らかにした。スクレロスチン抗体はすでに骨粗鬆症の治療薬として開発が進んでおり、今後歯周病の治療にも適応が広がる可能性を示した。

Report

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

    (5 results)

All 2019 2018 2017

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

  • [Journal Article] Advanced glycation end-product 2 and Porphyromonas gingivalis lipopolysaccharide increase sclerostin expression in mouse osteocyte-like cells2019

    • Author(s)
      Sakamoto Eijiro、Kido Jun-ichi、Takagi Ryosuke、Inagaki Yuji、Naruishi Koji、Nagata Toshihiko、Yumoto Hiromichi
    • Journal Title

      Bone

      Volume: 122 Pages: 22-30

    • DOI

      10.1016/j.bone.2019.02.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 終末糖化産物とLPSは骨細胞スクレロスチンを介し骨芽細胞の分化を抑制する2018

    • Author(s)
      坂本英次郎、高木亮輔、稲垣裕司、木戸淳一、湯本浩通
    • Organizer
      第148回日本歯科保存学会春季学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] AGEs and LPS inhibit osteoblastic differentiation via sclerotin in osteocytes2018

    • Author(s)
      Eijiro Sakamoto, Yuji Inagaki, Ryosuke Takagi, Jun-ichi Kido Hiromichi Yumoto
    • Organizer
      International association for dental research 96th General session&Exibition
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] AGE and Porphyromonas gingivalis-LPS increase sclerostin expression in osteocyte2017

    • Author(s)
      Eijiro Sakamoto
    • Organizer
      IADR(International association of dental research)
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      2017-03-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 最終糖化産物とLPSはMAPKおよびNF-kBを介してマウス骨細胞のスクレロスチンの発現を調節する2017

    • Author(s)
      坂本英次郎,稲垣裕司,木戸淳一,高木亮輔,成石浩司,永田俊彦
    • Organizer
      第60回春季日本歯周病学会学術大会
    • Related Report
      2017 Research-status Report

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

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