| Project/Area Number |
19592367
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Orthodontic/Pediatric dentistry
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| Research Institution | Nihon University |
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Principal Investigator |
KASAI Kazutaka Nihon University, 松戸歯学部, 教授 (30169396)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAGUCHI Masaru 日本大学, 松戸歯学部, 准教授 (60333100)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2007: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | 重度歯根吸収 / 活性型Tリンパ球 / 骨免疫学 / IL-17 / RANKL |
|---|
| Research Abstract |
The increase of RANKL and IL-17 were greater in the severe root resorption group than in the non-resorption group. Further, IL-17 stimulated RANKL production from human PDL cells in time- and dose dependent manner. Immunoreaction against osteoclastogenesis (RANK, RANKL, c-fms, M-CSF, IL-1 beta, IL-6, IL-17, IL-17R, CD4) became stronger in osteoblasts, osteoclasts, odontoclasts, and fibroblasts of the periodontal ligament in root resorption area from Day 7 onwards. The IL-17/RANKL system is responsible for transducing the heavy mechanical loading signals into an odontoclastic episode in root resorption.
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