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Production of eosinophil-dominant polyps in the rabbit maxillary sinuses and analysis of the role of fungi in development of sinusitis

Research Project

Project/Area Number 16591724
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionJICHI MEDICAL SCHOOL

Principal Investigator

ICHIMURA Keiichi  JICHI MEDICAL SCHOOL, School of Medicine, Professor, 医学部, 教授 (00010471)

Co-Investigator(Kenkyū-buntansha) NISHINO Hiroshi  JICHI MEDICAL SCHOOL, School of Medicine, Associate Professor, 医学部, 助教授 (50245057)
TANAKA Hidetaka  JICHI MEDICAL SCHOOL, School of Medicine, Instructor, 医学部, 助手 (50296109)
SEJIMA Takayuki  JICHI MEDICAL SCHOOL, School of Medicine, Fellow, 医学部, 研究員 (20326838)
石川 敏夫  自治医科大学, 医学部, 助手
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2005: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2004: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordseosinophil / model animal / fibrinolytic system / remodeling / nasal polyps / fungus / アレルギー・喘息 / 微生物 / 動物モデル / 好酸球性炎症 / 鼻茸 / 副鼻腔炎
Research Abstract

In response to increase in clinical interest in eosinophilic inflammation of the nose and sinuses and its concomitant polyp formation, we tried to create animal model of this condition for elucidating developing mechanism and clinical application. We transcutaneously opened rabbit maxillary sinuses and closed their ostia followed by instillation of inflammatory substances in order to create polyps. The world first formation of eosinophil dominant polyps was successfully performed by intradermal ovalbumin injection and intrasinus instillation of VGSG and MMP-2. Pretreatment of ovalbumin and instillation of VGSG may be inducing factors of eosinophilic inflammation by accelerating eosinophil infiltration and cause tissue change. MMP-2 might contribute to development of polyps by degrading type IV collagen and also be involved in remodeling by affecting extracellular matrix metabolism.
As fibrinolytic system is one of the major factors for controlling eosinophils and extracellular matrix, presence of fibrinolytic components in the nasal mucosa was verified. All components of fibrinolytic system including t-PA, u-PA, PAI-1 and PAI-2 were identified by RT-PCR. They were recognized in the epithelium and infiltrating cells by both in situ hybridization and immunohistochemical stains. The results indicated that fibrinolytic factors were intimately involved in developing polyps as they regulated enzymatic activity in remodeling. In order to investigate fungal contribution to eosinophilic inflammation of the nose and sinuses intrasinus Aspergillus instillation was tried. We have observed inflammatory findings of the mucosa but have not created edematous polyps so far. Further studies other than that with Aspergillus are required.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (17 results)

All 2005 2004

All Journal Article (17 results)

  • [Journal Article] Protection of plasminogen activator inhibitor-1-deficient mice from nasal allergy2005

    • Author(s)
      Sejima T, Madoiwa S, MimoroJ, Sugo T, Okada S, UeshimaS, Matsuo S, Ishikda T, Ichimura K, Sakata Y
    • Journal Title

      The Journal of Immunology 174

      Pages: 8135-8143

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 感作動物モデルにおける鼻茸形成 特に好酸球浸潤鼻茸形成のトライアル2005

    • Author(s)
      瀬嶋尊之, 市村恵一
    • Journal Title

      日本鼻科学会誌 44(1)

      Pages: 62-64

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 真菌と副鼻腔炎2005

    • Author(s)
      市村恵一
    • Journal Title

      JOHNS 22(1)

      Pages: 71-75

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Protection of plasminogen activator inhibitor-1-deficient mice from nasal allergy.2005

    • Author(s)
      Sejima T, Madoiwa S, Mimuro J, Sugo T, Okada S, Ueshima S, Matsuo S, Ishida T, Ichimura K, Sakata Y
    • Journal Title

      J Immunol 174

      Pages: 8135-8143

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] polyp formation in sensitized animal model-Trial of eosinophil-dominant polyps2005

    • Author(s)
      Sejima T, Ichimura K
    • Journal Title

      J Jap Rhinol 44

      Pages: 62-64

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Fungi and sinusitis2005

    • Author(s)
      Ichimura K
    • Journal Title

      JOHNS 22

      Pages: 71-75

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Protection of plasminogen activator inhibitor-1- deficient mice from nasal allergy2005

    • Author(s)
      Sejima T, Madoiwa S, Mimuro J, Sugo T, Okada S, Ueshima S, Matsuo S, Ishida T, Ichimura K, Sakata Y
    • Journal Title

      The Journal of Immunology 174

      Pages: 8135-8143

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 感作動物モデルにおける鼻茸形成 特に好酸球浸潤鼻茸作成のトライアル2005

    • Author(s)
      瀬嶋尊之, 市村恵一
    • Journal Title

      日本鼻科学会誌 44(1)

      Pages: 62-64

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 感作動物モデルにおける鼻茸形成2004

    • Author(s)
      瀬嶋尊之, 市村恵一
    • Journal Title

      日本鼻科学会誌 43(3)

      Pages: 268-268

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Expression profiles of fibrinolytic components in nasal mucosa.2004

    • Author(s)
      Sejima T, Madiniwa S, Mimuro J, Sugo T, Ishida T, Ichimura K, Sakata Y.
    • Journal Title

      Histochem Cell Biol 122

      Pages: 61-73

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 鼻茸の実験動物モデル2004

    • Author(s)
      瀬嶋尊之, 市村恵一
    • Journal Title

      JOHNS 20(12)

      Pages: 1787-1791

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 鼻閉の病態と治療2004

    • Author(s)
      市村恵一
    • Journal Title

      日本醫事新報 4182

      Pages: 7-13

    • NAID

      40006252401

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Polyp formation in the maxillary sinus of sensitized animal model2004

    • Author(s)
      Sejima T, Ichimura K
    • Journal Title

      J Jap Rhinol 43

      Pages: 269-269

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Expression profiles of fibrinolytic components in nasal mucosa.2004

    • Author(s)
      Sejima T, Madoiwa S, Mimuro J, Sugo T, Ishida T, Ichimura K, Sakata Y
    • Journal Title

      Histochem Cell Biol. 122

      Pages: 61-73

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Animal model in developing polyps2004

    • Author(s)
      Sejima T, Ichimura K
    • Journal Title

      JOHNS 20(12)

      Pages: 1787-1791

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Mechanism and treatment of nasal obstruction2004

    • Author(s)
      Ichimura K
    • Journal Title

      Nippon Iji Shimpo 4182

      Pages: 7-13

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 感作動物モデルにおける鼻茸形成2004

    • Author(s)
      瀬嶋尊之, 市村恵一
    • Journal Title

      日本鼻科学会会誌 43(3)

      Pages: 269-269

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2017-06-08  

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