2010 Fiscal Year Final Research Report
Development of novel therapeutic approach for the prevention of alveolar bone destruction and atherosclerosis through the regulation of Wnt signaling
Project/Area Number |
20592425
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Periodontal dentistry
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Research Institution | Tokyo Medical and Dental University |
Principal Investigator |
NAGASAWA Toshiyuki Tokyo Medical and Dental University, 歯学部, 准教授 (90262203)
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Co-Investigator(Kenkyū-buntansha) |
KOBAYASHI Hiroaki (50396967)
TAKEUCHI Yasuo (60396968)
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Project Period (FY) |
2008 – 2010
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Keywords | RANKL / OPG / Wnt / beta-catenin / 抗リン脂質抗体症候群 |
Research Abstract |
Receptor activator of NF kappa B Ligand (RANKL) stimulates osteoclast differentiation, and osteoprotegerin (OPG) suppress the osteoclastogenesis. The OPG deficient mice showed severe osteopetrosis and atherosclerosis. The WNT signaling regulates cell differentiation and/or proliferation, and the activation of WNT signaling stimulates OPG expression. The purpose of this study was to examine the RANKL and OPG expression in periodontitis and atherosclerosis lesions, and evaluate the roles of periodontal infection on atherosclerosis. In addition, effects of Wnt signaling on OPG expression were also examined for the possible therapeutic approach against periodontitis and atherosclerosis. Present study showed that RANKL expression was augmented in periodontitis tissue and abdominal aortic aneurisms (AAA) tissue. In AAA tissues, periodontopathic bacteria were frequently detected, but they were completely absent in the healthy tissues. LPS from periodontopathic bacteria stimulated RANKL expression and RANKL augment MMP expression in vascular smooth muscle cells in vitro. These results suggest that RANKL expression augmented not only osteoclastogenesis, but also AAA lesion. Suppression of Wnt signaling by siRNA suppressed OPG expression in various cells. Curcumin augmented OPG expression in various cell types, suggesting that they might suppress RANKL expression in periodontitis and AAA. These results suggested that regulation of Wnt signaling might suppress periodontitis and AAA.
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Research Products
(42 results)
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[Journal Article] Reduced masticatory function in non-elderly obese Japanese adults.2011
Author(s)
Katagiri S, Nitta H, Nagasawa T, Izumi Y, Kanazawa M, Matsuo A, Chiba H, Miyazaki S, Miyauchi T, Nakamura N, Oseko F, Kanamura N, Ando Y, Hanada N, Inoue S.
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Journal Title
Obesity Research and Clinical Practice in press
Peer Reviewed
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[Journal Article] Relationship between Periodontitis and Diabetes. Importance of a Clinical Study to Prove the Vicious Cycle.2010
Author(s)
Nagasawa T, Noda M, Katagiri S, Takaichi M, Takahashi Y, Wara-Aswapati N, Kobayashi H, Ohara S, Kawaguchi Y, Tagami T, Furuichi Y, Izumi Y
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Journal Title
Internal Medicine 49(10)
Pages: 881-885
Peer Reviewed
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[Journal Article] High Prevalence of periodontitis in non-elderly obese Japanese adults2010
Author(s)
Katagiri S, Nitta H, Nagasawa T, Izumi Y, Kanazawa M, Matsuo A, Chiba H, Miyazaki S, Miyauchi T, Nakamura N, Kanamura N, Ando Y, Hanada N, Inoue S
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Journal Title
Obesity Research & Clinical Practice 4(4)
Pages: e301-306
Peer Reviewed
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[Journal Article] Multi-center intervention study on glycohemoglobin (HbA1c) and serum, high-sensitivity CRP (hs-CRP) after local anti-infectious periodontal treatment in type 2 diabetic patients with periodontal disease.2009
Author(s)
Katagiri S, Nitta H, Nagasawa T, Uchimura I, Izumiyama H, Inagaki K, Kikuchi T, Noguchi T, Kanazawa M, Matsuo A, Chiba H, Nagkamura N, Kanamura N, Inoue S, Ishikawa I, Izumi Y
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Journal Title
Diabetes Res Clin Prac 83(3)
Pages: 308-315
Peer Reviewed
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[Journal Article] Association between periodontitis and anti-cardiolipin antibodies in Buerger disease.2009
Author(s)
Chen Y-W, Nagasawa T, Wara-Aswapati N, Ushida Y, Wang D, Takeuchi Y, Kobayashi H, Umeda M, Inoue Y, Iwai T, Ishikawa I, Izumi Y
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Journal Title
J Clin Periodontol 36(10)
Pages: 830-835
Peer Reviewed
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[Presentation] ヒアルロン酸配合チューインガムによる歯肉炎改善効果に関する研究2010
Author(s)
小林宏明, 長澤敏行, 竹内康雄, 渡辺香, 北川原聡, 藤川佳奈, 若松美江, 大西英和, 小柳達郎, 鈴木允文, 谷口陽一, 南原宏美, 早雲彩絵, 姫野彰子, 高橋充, 高松秀行, 和田真由子, 柳憲一郎, 山井雅文, 和泉雄一
Organizer
第53回春季日本歯周病学会
Place of Presentation
盛岡市民文化ホール、いわて県民情報交流センター(アイーナ)
Year and Date
20100514-20100515
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[Presentation] 2型糖尿病患者に対する歯周治療の影響2009
Author(s)
和田真由子, 片桐さやか, 新田浩, 長澤敏行, 小林宏明, 竹内康雄, Bharti Pariksha, 谷口陽一, 南原弘美, 高松秀行, 和泉雄一
Organizer
第131回秋期日本歯科保存学会
Place of Presentation
仙台国際センター(仙台)
Year and Date
20091029-20091030
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[Presentation] 2型糖尿病患者の歯周基本治療におけるHbA1cおよび歯周病原細菌に対する血清IgG抗体価への影響2009
Author(s)
高松秀行, 片桐さやか, 新田浩, 長澤敏行, 牛田由香, 小林宏明, 小柳達郎, 鈴木允文, 高橋充, 谷口陽一, 寺地真由, 南原弘美,早雲彩絵, 姫野彰子, 和田真由子, 和泉雄一
Organizer
第52回秋期日本歯周病学会
Place of Presentation
宮崎観光ホテル (宮崎)
Year and Date
20091010-20091011
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[Presentation] 唾液中の抗菌ペプチドLL-37と歯周炎の病態との関連性2009
Author(s)
北川原聡, 長澤敏行, 小林宏明, 竹内康雄, 水谷幸嗣, 矢代麗子, 牛田由佳, 渡辺香, 横田悟, 中島啓子, 大西英知, 関西一史, 小柳達郎, 和泉雄一
Organizer
第52回春期日本歯周病学会
Place of Presentation
岡山
Year and Date
20090500
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[Presentation] 歯周炎患者と健常者における歯肉溝滲出液中の抗 FDF 抗体価の比較 20082008
Author(s)
大西英知, 荒川真一, 長澤敏行, 小林宏明, 竹内康雄, 水谷幸嗣, 矢代麗子, 牛田由佳, 甘美和, 横田悟, 渡辺香, 北川原聡, 中島啓子, 関西一史, 片桐さやか, 梅田誠, 中島琢磨, 和泉雄一
Organizer
第51回秋季日本歯周病学会
Place of Presentation
四日市文化会館
Year and Date
20081018-20081019
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[Remarks] ホームページ等