2009 Fiscal Year Final Research Report
Cellular and molecular mechanisms of the tooth root formation by radiation damage.
| Project/Area Number |
20791375
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Pathobiological dentistry/Dental radiology
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| Research Institution | The Nippon Dental University |
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Principal Investigator |
IDE Yoshiaki The Nippon Dental University, 生命歯学部, 助教 (70409225)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 放射線治療 / 歯根形成 / 再生医療 / 小児白血病 / マイクロCT / BrdU / PCNA / ヘルトヴィッヒ上皮鞘 |
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| Research Abstract |
The purpose of this study was to elucidate the mechanisms of tooth root formation disturbance caused by radiation. We found that in the tooth root of a mouse, the root furcation is formed 11 days after birth, and that the tooth root is completed 21 days after birth. The tooth root formation disturbance was examined according to different doses of radiation through three-dimensional observation by micro CT. The tooth root formation disturbance is observed with 5Gy of radiation, and that at 10Gy, only 1/2-2/3 the size of non-irradiated (0Gy) tooth root was formed. Hertwig's epithelial root sheath (HERS) is considered to play an important role in tooth root formation, and we are investigating this area using a cell proliferation marker.
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[Presentation] 歯科医療コミュニケーション教育に参加した模擬患者の意識調査2009
Author(s)
内川喜盛, 大澤銀子, 北原和樹, 井出吉昭, 織田聰一郎, 岩田洋, 大津光寛, 横澤茂, 岡田智雄, 仲谷寛, 三代冬彦
Organizer
日本歯科医学教育学会
Place of Presentation
広島
Year and Date
20091100
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[Presentation] Engineering a retinal tissue in vitro using newly-established cell lines derived from mouse embryonic stem cells2009
Author(s)
Nakahara T, Tominaga N, Tamaki Y, Ide Y, Nasu M, Ohyama A, Hashimoto H, Tachibana T, Ishiwata I, Sato S, Ishikawa H
Organizer
日本ヒト細胞学会
Place of Presentation
東京
Year and Date
20090800
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