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2006 Fiscal Year Final Research Report Summary

A study of the influence of chemoradiation for head and neck cancer on healing of wound

Research Project

Project/Area Number 16591700
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionKanazawa University

Principal Investigator

TATSUTOMI Shinji  School of Medicine, Assistant, Professor, 医学部附属病院, 助手 (40359716)

Project Period (FY) 2004 – 2006
Keywordshead and neck cancer / chemoradiation / healing of wound / animal study
Research Abstract

Twenty C3H mice were anesthetized by intraperitoneal injection of Nembutal, and irradiated to dorsum skin (each 10 mice to 10Gy, 20Gy, 30Gy). To analyze the histological change, paraffin sections of dorsum skin were prepared for Hematokxylin and Eosin stain and Elastica van Gieson stain. As a result, the degeneration, defluvium, and disappearance of hair root was observed. In epidermis the decrease of cell layer and the atrophy were observed.
The expression of Notch receptor (Notch-1), ligand of Notch receptor (Jagged-1), cycloxygenase (COX-1, and COX-2) were immunohistologically analyzed at post-irradiation day 7, 30, and 90. Notch receptor regulates the differentiation and maintenance of cells by binding to its ligand. Jagged-1 activates the signals suppressing the differentiation and accelerates the migration of various cells. COX-1 homeostatically exist in vivo, whereas the expression of COX-2 was induced by stress, inflammation, and so on. At post-irradiation day 7, the expression of Notch-1 and Jagged was strongly recognized by hair root.The expression of COX-1 and COX-2 was less observed. At post-irradiation day 30, the expression of Jagged-1 was locally observed by hair root, whereas the expression of Notch-1 extended to stratum corneum. The expression of COX-1 and COX-2 was strongly observed in fibroblasts. At post-irradiation day 90, fibrous degeneration of dorsum skin was markedly recognized and the expression of these substances was decreased.
This study demonstrates that tissue is degenerated by inflammation due to irradiation at early post-irradiation time, and then inflammation gradually decreases and fibrous degeneration proceeds.

  • Research Products

    (6 results)

All 2007 2005

All Journal Article (6 results)

  • [Journal Article] 口腔底癌 late T2・T3の化学療法・放射線治療2007

    • Author(s)
      達富真司, 古川 仭, 吉崎智一
    • Journal Title

      JOHNS 23・4

      Pages: 649-652

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 「研究成果報告書概要(欧文)」より2007

    • Author(s)
      Shinji Tatsutomi, Mitsuru Furukawa, Tomokazu Yoshizaki
    • Journal Title

      JOHNS 23・4

  • [Journal Article] Cervical radiculopathy due to intra-arterial infusion of cisplatin2005

    • Author(s)
      Toshiro Nishimura, Jun-ichiro Sanada, Mitsuru Furukawa
    • Journal Title

      Journal of Laryngology & Otology 119・8

      Pages: 649-650

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 鼻性眼窩内合併症の5症例2005

    • Author(s)
      達富真司, 塚谷才明, 三輪高喜, 古川 仭
    • Journal Title

      日本鼻科学会会誌 44・4

      Pages: 302-308

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Cervical radicuropathy due to intra-arterial infusion of cisplatin2005

    • Author(s)
      Toshiro Nishimura, Mitsuru Furukawa
    • Journal Title

      Journal of Laryngology & Otology 119・8

      Pages: 649-650

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Five cases with orbital complications from acute sinusitis.2005

    • Author(s)
      Shinji Tatsutomi, Toshiaki Tsukatani, Takaki Miwa, Mitsuru Furukawa
    • Journal Title

      Japanese Journal of Rhinology 44・4

      Pages: 302-308

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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