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Preventive study on the pathogenic mechanism of diabetic nephropathy caused by periodontal disease and the cycle of diabetic exacerbation

Research Project

Project/Area Number 21K17205
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57080:Social dentistry-related
Research InstitutionFukuoka Dental College

Principal Investigator

Kajiwara Koichiro  福岡歯科大学, 口腔歯学部, 助教 (80803915)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords糖尿病性腎症 / P.gingivalis / lipopolysaccharide / toll-like recepter / SGLT2 / 口腔衛生 / P. gingivalis / 歯周疾患 / 糖尿病 / P. gingivalis LPS / FGF23 / ACE2 / 尿細管間質性炎 / 糸球体硬化症 / 複雑系 / TLR / SGLT2阻害薬
Outline of Research at the Start

歯周疾患のある糖尿病患者が腎症を合併する危険性の高いことは喫緊の問題です。糖尿病の腎糸球体は自然免疫受容体を発現するので、歯周病細菌と出会うと腎症を起こすこと、SGLT2を炎症性に過剰発現させることをマウス実験で証明しました。この研究では、歯周病が腎症だけでなく糖尿病を増悪させるという仮説を明らかにします。

Outline of Final Research Achievements

It is known that diabetic patients with periodontitis are more likely to develop nephropathy than patients without periodontitis, but the mechanism is unknown.In this study, we explored the possibility that glomerular blood vessels express the immune molecule TLR in diabetes and overreact to bacterial components in the
blood, making the glomerulosclerosis. All bacteria in the digestive tract are killed in the liver, but bacteria in the oral cavity go directly into the kidneys.
The present study aims to examine the renal SGLT2 induction by the TLR2/4 ligand Porphyromonas gingivalis lipopolysaccharide in mouse diabetic nephropathy.

Academic Significance and Societal Importance of the Research Achievements

糖尿病患者は、口腔衛生状態に気をつけ、歯磨きをすること、もし歯周病があれば早期に治療することで腎症に移行することを予防できる可能性が、マウスを用いた動物実験で示すことができた。糖尿病性腎症の起こる仕組みは多様で、一概に言うことは出来ないが、少しでも糖尿病による透析患者人口を減らすことに貢献できるのではないかと考えている。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Immunohistochemical study for the expression of leukocyte adhesion molecules, and FGF23 and ACE2 in P. gingivalis LPS-induced diabetic nephropathy.2021

    • Author(s)
      Kajiwara K, Sawa Y, Fujita T, Tamaoki S.
    • Journal Title

      BMC Nephrology

      Volume: 22 Issue: 1 Pages: 3-3

    • DOI

      10.1186/s12882-020-02203-y

    • NAID

      120006955806

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] P. gingivalis LPS誘導性糖尿病性腎症モデルマウスにおけるSGLT2の過剰発現についての研究.2023

    • Author(s)
      梶原弘一郎, 沢禎彦, 玉置幸雄.
    • Organizer
      第128回日本解剖学会総会・全国学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] P. gingivalis LPS誘導性糖尿病性腎症マウスにおけるSGLT2の過剰発現について2022

    • Author(s)
      梶原弘一郎, 沢禎彦, 玉置幸雄
    • Organizer
      第127回日本解剖学会総会・全国学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Overexpression of SGLT2 in the kidney of a P. gingivalis LPS-induced diabetic nephropathy mouse model.2022

    • Author(s)
      Kajiwara K, Sawa Y.
    • Organizer
      第64回歯科基礎医学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] P. gingivalis LPS 誘導性糖尿病性腎症マウスにおける SGLT2の過剰発現について2022

    • Author(s)
      梶原弘一郎、沢禎彦、玉置幸雄
    • Organizer
      第127回日本解剖学会総会・全国学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] P. gingivalis LPS が誘導する糖尿病性腎症モデルマウス腎における SGLT2の過剰発現についての研究2021

    • Author(s)
      梶原弘一郎、沢禎彦
    • Organizer
      第63回歯科基礎医学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Abnormal expression of SGLT2 in the kidney of a P. gingivalis LPS-induced diabetic nephropathy mouse model.2021

    • Author(s)
      Koichiro Kajiwara, Yoshihiko Sawa, Sachio Tamaoki.
    • Organizer
      第69回国際歯科研究学会(JADR)日本部会総会・学術大会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2024-01-30  

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