2023 Fiscal Year Final Research Report
New pharmacological theraputic strategy for inferior alveolar nerve injury focusing on visualization and regeneration of myelin
Project/Area Number |
20K18678
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 57060:Surgical dentistry-related
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Research Institution | Showa University |
Principal Investigator |
Sato Hitoshi 昭和大学, 歯学部, 講師 (00594954)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | 神経損傷 |
Outline of Final Research Achievements |
We investigated the therapeutic and pharmacological effects of rapamycin on the sensory disturbance in the mandibular region caused by inferior alveolar nerve transection in rats. The expression levels of the phosphorylated Ribosomal protein S6 kinase beta-1 (p70S6K), a downstream molecule of mammalian target of rapamycin (mTOR), in the proximal and distal stumps of the transected inferior alveolar nerve were significantly reduced by rapamycin administration to the injured site. Conversely, the increments of both Beclin 1 and microtubule-associated protein-1 light chain 3-II protein (LC3) levels in the proximal and distal stumps of the transected inferior alveolar nerve was induced by rapamycin administration.
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Free Research Field |
口腔外科学
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Academic Significance and Societal Importance of the Research Achievements |
智歯の抜歯術や顎矯正手術、デンタルインプラントの埋入に伴う合併症として三叉神経損傷が生じることがある。三叉神経損傷によって生じる三叉神経支配領域、特に口腔顎顔面領域の感覚異常に対しては有効な治療薬がなく、遷延化した場合には患者のQOLを大きく損なうことが報告されている。三叉神経損傷後の髄鞘の再生は感覚機能の回復に重要な役割を果たし、本研究ではミエリンを形成するシュワン細胞の機能について解析を行った。その結果、ラパマイシンの投与によってシュワン細胞のオートファジーを制御することが軸索再生に寄与することが明らかとなった。
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