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Central nervous system modulates pain induced by orthodontic tooth movement

Research Project

Project/Area Number 14571948
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 矯正・小児・社会系歯学
Research InstitutionOKAYAMA UNIVERSITY

Principal Investigator

YAMASHIRO Takashi  OKAYAMA UNIVERSITY, Graduate School of Medicine and Dentistry, Associate Professor, 大学院・医歯学総合研究科, 助教授 (70294428)

Co-Investigator(Kenkyū-buntansha) MIYAMOTO Manabu  Okayama University, Graduate School of Medicine and Dentistry, Assistant Professor, 大学院・医歯学総合研究科, 助手 (40252978)
YAMAMOTO Teruko (TAKANO Teruko)  Okayama University, Graduate School of Medicine and Dentistry, Professor, 大学院・医歯学総合研究科, 教授 (00127250)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2003: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2002: ¥3,100,000 (Direct Cost: ¥3,100,000)
Keywordstooth movement / pain / modulation / opioid peptide / enkephalin / serotonergic / inhibitory system / antinociception
Research Abstract

Orthodontic tooth movement causes pain and discomfort to patients. Pain information is transmitted via an ascending pain pathway from the peripheral tissues to the central nervous system. In addition, there is also a descending pathway that allows the brain to modulate pain sensation. Endogenous pain control system involves multiple pathways, and multiple endogenous opioid peptides are released in both spinal and supraspinal levels and produce analgesia. However it is not clearly whether experimental tooth movement activates endogenous enkephalinergic system. To investigate the possible involvement of this system during experimental tooth movement, we analyzed possible deviation of Preproenkephalin (PPE) mRNA expression pattern by using in situ hybridization.
In this study, the experimental tooth movement upregulates PPE mRNA only in the dorsomedial part of the superficial layer of Vc. Furthermore, this upregulation of the expression was confirmed only in the ipsilateral side in contrast to that of control rats. The resent findings together with previous ones showed that endogenous enkephalinergic systems were activated presumably by the nociception caused by the experimental tooth movement. Nociceptive somatic stimuli also activate descending monoaminergic pathways, which modulate the transmission of ascending sensory messages, and monoaminergic neurons projecting to the dorsal spinal cord are critical to the regulation of transmission of nociceptive information. It is known that nociception induced by experimental tooth movement activates the endogenous descending serotonergic system Recent study showed S-HT up regulates the PPE mRNA expression in the cultured spinal cord. Taken, together, in the antinociception mechanism during experimental tooth movement, serotonergic descending systems exert their inhibitory roles by activating the PPE gene and c-fos is associated with this serotonergic regulation of that endogenous opioid ligand genes.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Balam TA, Yamashiro T, Zheng L, Ahmed MS, Takano-Yamamoto T: "Experimental tooth movement upregulates preproenkephalin mRNA in the Rat trigeminal nucleus caudalis."J Dent Res.. (投稿中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Fukunaga T, Yamashiro T, Oya S, Takeshita N, Takigawa M, Takano Yamamoto T: "CTGF mRNA expression pattern in cartilages is associated with their type I collagen expression"Bone. 33(6). 911-918 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kamioka H, Sugawara Y, Honjo T, Yamashiro T, Takano-Yamamoto T: "Terminal differentiation of osteoblasts to osteocytes is accompanied by dramatic changes in the distribution of actin-binding proteins."J Bone Miner Res.. 19(3). 471-478 (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 菅原康代, 黒田晋吾, 山城 隆, 山本照子: "混合歯列期に前歯部反対咬合を認めた下顎前突の1治験例"中・四国矯正歯科学会雑誌. 14(1). 83-88 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 倉谷豪, 宮脇正一, 酒井雄一, 宮本 学, 山城 隆, 山本照子: "アルブライト症候群患者め顎顔面形態の長期観察"Orthod Waves. 62(4). 253-261 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Balam, TA, Yamashiro T, Zheng L, Ahmed MS, Takano-Yamamoto T: "Experimental tooth movement upregulates preproenkephalin mRNA in the Rat trigeminal nucleus caudalis."J Dent Resin. (in submission).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Fukunaga T, Yamashiro T, Oya S, Takeshita N, Takigawa M, Takano-Yamamoto T: "CTGF mRNA expression pattern in cartilages is associated with their type I collagen expression"Bone. 33(6). 911-918 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Kamioka H, Sugawara Y, Honjo T, Yamashiro T, Takano-Yamamoto.T: "Terminal differentiation of osteoblasts to osteocytes is accompanied by dramatic changes in the distribution of actin-binding proteins."J Bone Miner Res.. 19(3). 471-478 (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Fukunaga T: "Connective tissue growth factor mRNA expression pattern in cartilages is associated with their type I collagen expression."Bone. 33(6):911-8. 911-918 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Yamashiro, T.: "Expression of Runx1, -2 and -3 during tooth, palate and craniofacial bone development"Gene Expr Patterns. 2(1-2). 109-112 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kuja-Panula: "AMIGO, a transmembrane protein implicated in axon tract development defines a novel protein family with leucine-rich"J Cell Biol. 160(6). 963-973 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Yamashiro T: "Expression of Bone Morphogenetic Proteins and Msx Genes during Root Formation"J Dent Res. 82(3). 172-176 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Mattila PK: "Mouse MIM, a tissue-specific regulator of cytoskeletal dynamics, interacts with ATP-actin monomers through its C-terminal WH2 domain"J Biol Chem. 278(10). 8452-8459 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Yamashiro (Ed.K.Takada, William R.Proffit): "Orthodontics in the 21^<St> Century-Where are We Now? Where Are We Going?"Osaka University Press. 216 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2022-01-20  

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