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1995 Fiscal Year Final Research Report Summary

Molecular biology of morphological preservation of radiotherapy

Research Project

Project/Area Number 06670894
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Radiation science
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

SHIRATO Hiroki  Hokkaido Univ., Fac. of. Med.Assi. Pro, 医学部附属病院, 講師 (20187537)

Co-Investigator(Kenkyū-buntansha) YASUDA Motoaki  Hokkaido Univ., Fac. of Dent. Instructor, 歯学部, 助手 (90239765)
Project Period (FY) 1994 – 1995
KeywordsRadiation / Cell adhesion / Morphorogic preservation / Cadherin Molecule
Research Abstract

To investigate the mechanism of morphological preservation of radiation therapy (RT), clinical, pathological, and molecular biological research was undertaken. By photographical and radilogical comparison between the pre-RT morphology and post-RT morphology, it was conclusive that morphological preservation is not merely ordinal tissue repair, but rather complex regeneration. Immunostaning of E-cadherin, which is one of the cell-cell adhesion molecule important in morphological developmement, showed that E-cadherin is stained even 5 years after the 65 Gy irradiation to the larynxgeal surface. Cell migration assay showed that more number of epitherial cells, HSC3 and CA9-22, were migrated by the conditioned medium of MRC5 which was irradiated 10 Gy than that of non-irradiated MRC5 Immunobiochemical quantitative analysis showed that the conditioned medium of MRC5 has more amount of HGF after 10 Gy irradiation than that of non-irradiated MRC5. These resultus suggested that morphological preservation after radiotherapy is depend on the molucular control of normal tissue, of which mechanism still await more investigation.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 白土博樹: "形態機能温存と放射線治療" 頭頸部腫瘍. 21. 576-580 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hiroki Shirato: "A mathematical model of the volume effect which postulates cell migration from unirradiated tissues" Radiotherapy and Oncology. 35. 227-231 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Motoaki Yasuda: "Detection of and fragmentation in-irradiated rat tongue epithelium" J. Jpn. Soc. Ther. Radiol. Oncol.8. (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hiroki Shirato, Seiko Hashimoto, Takashi Nishioka and Motoaki Yasuda: "Morphological and functional preservation of radiation treatment." Head and Neck Cancer. 21(3). 576-580 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hiroki SHirato, Masahiro Mizuta, Kazuo Miyasaka: "A Mathematical model of the volume effect which postulates cell migration from unirradiated tissues." Radiotherapy and Oncology. 35. 227-231 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Motoaki Yasuda, Takeshi Nishioka, Hirohiko Shirato: "Detection of and fragmentation in -irradiated rat tongue epithelium." J.Jpn. Sco. Ther. Radiol. Oncol.8. (1996)

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

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Published: 1997-03-04  

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