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Development of a new periodontal treatment targeting the cross talk between osteoclast and osteoblast

Research Project

Project/Area Number 16K11833
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Periodontology
Research InstitutionThe University of Tokushima

Principal Investigator

INAGAKI Yuji  徳島大学, 病院, 講師 (50380019)

Research Collaborator TERAMACHI junpei  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords歯周病 / 骨カップリング / 破骨細胞 / 骨芽細胞 / ephrin / Eph / Ephrin / 歯周炎モデルラット / LPS / Eph受容体
Outline of Final Research Achievements

The effects of LPS and inflammatory cytokines on the osteoclast-osteoblast coupling signals were examined, the expressions of ephrinA2, EphA2, S1P1 and SPHK1 were increased by LPS, IL-6 and TNF-α in osteoclasts. On the other hand, the expression of EphB4 was decreased by LPS in osteoblasts.
When substances that affect the osteoclast-osteoblast coupling signals were searched in vitro, Kanroin, a traditional Japanese herbal medicine, suppressed the expression of EphA2, EphrinB2, Sema4D and SPHK1 in a murine pre-osteoclastic cell line. Furthermore, the inhibitory effects of Kanroin on alveolar bone resorption were examined in vivo, Kanroin significantly suppressed the alveolar bone resorption in experimental rat periodontitis.

Academic Significance and Societal Importance of the Research Achievements

本研究は、歯周病における歯槽骨破壊が骨カップリング機構の破綻によるものであることを示すために、歯周病原因子が骨カップリングファクターの発現に対してどのような影響を与えるか検討したものである。本研究の結果、歯周病原因子が破骨細胞や骨芽細胞の骨カップリングファクターの発現に対して影響を与えることが明らかになり、骨カップリング機構が歯周治療の新たな標的となり得ることを示すことができた。また破骨細胞の分化を抑制し、骨カップリングファクターの発現に対して影響を与える物質を見出し、歯周薬物治療の新たなシーズを提供することができた。

Report

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

    (3 results)

All 2018

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 甘露飲エキス配合製剤はラット実験的歯周炎において歯槽骨吸収を抑制する2018

    • Author(s)
      稲垣裕司、野中康平、高木亮輔、西川泰史、木戸理恵、坂本英次郎、成石浩司、木戸淳一、湯本浩通
    • Organizer
      第61回春季日本歯周病学会学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 甘露飲エキスは破骨細胞の分化制御を介してラット実験的歯周炎の歯槽骨吸収を抑制する2018

    • Author(s)
      稲垣裕司、高木亮輔、西川泰史、木戸理恵、坂本英次郎、成石浩司、木戸淳一、湯本浩通
    • Organizer
      第149回日本歯科保存学会2018年度秋季学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Kanroin Extracts Prevent Alveolar Bone Resorption in Experimental Rat Periodontitis.2018

    • Author(s)
      Yuji Inagaki, Kohei Nonaka, Ryosuke Takagi, Yasufumi Nishikawa, Rie Kido, Eijiro Sakamoto, Koji Naruishi, Jun-ichi Kido, Hiromichi Yumoto
    • Organizer
      96th General Session of the IADR (International Association for Dental Research)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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

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