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Change of the number of blood vessels at tongue papillae in chorda tympani nerve injury and zinc-deficient taste

Research Project

Project/Area Number 16591737
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionHyogo College of Medicine

Principal Investigator

SAKAGAMI Masafumi  Hyogo College of Medicine, Faculty of Medicine, Professor, 医学部, 教授 (10170573)

Co-Investigator(Kenkyū-buntansha) TERADA Tomonori  Hyogo College of Medicine, Faculty of Medicine, Research Associa, 医学部, 助手 (00340977)
FUKAZAWA Keijiro  Hyogo College of Medicine, Faculty of Medicine, Associate Professor, 医学部, 助教授 (50278842)
TSUJIMURA Tohru  Hyogo College of Medicine, Faculty of Medicine, Professor, 医学部, 教授 (20227408)
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: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2004: ¥2,300,000 (Direct Cost: ¥2,300,000)
Keywordschorda tympani nerve / middle ear surgery / tongue papillae / zinc-deficient taste disturbance / blood vessel / neurotransmitter / microscope / 味覚障害 / 亜鉛欠乏 / 血管分布 / マイクロスコープ
Research Abstract

Taste function after middle ear surgery was examined before surgery and 2 weeks, 3, 6, 12 and 24 months after surgery using electrogustometry and filter-paper disc method. At each time, the number of blood vessels at tongue papillae was counted per unit area by microscope. The number of blood vessels per area tended to be smaller with the severity of taste disturbance.
Taste function due to zinc-deficiency was examined using electrogustometry and filter-paper disc method. The number of blood vessels at tongue papillae tended to be smaller than that of chorda tympani nerve injury.
Toexamine vascular structure in rats, melcox was injected into rat blood vessels and the cast of vascular structure was observed by scanning electronmicroscopy. Well-organixed vascular structure was observed in normal rats, however the number of vessels was reduced and irregular shape was frequently observed in rats with injury of chorda tympani nerve and with zinc-deficiency.
Neurotranmitters expressed at nerve regeneration were examined by in situ hybridization and immunohistochemistry. So far, we have not had enough data to correlate with new blood vessels at tongue papillae. The experiment is still going on.

Report

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

    (15 results)

All 2006 2005 2004

All Journal Article (15 results)

  • [Journal Article] Taste function after section of chorda tympani nerve in middle ear surgery2006

    • Author(s)
      Nin T, Sakagami M, et al.
    • Journal Title

      Auris Nasus Larynx 33・1

      Pages: 13-17

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste function after section of chorda tympani nerve in middle ear surgery.2006

    • Author(s)
      Nin T, et al.
    • Journal Title

      Auris Nasus Larynx 33

      Pages: 13-17

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste disturbance after tonsillectomy and laryngomicrosurgery2005

    • Author(s)
      Tomofuji S, Sakagami M, et al.
    • Journal Title

      Auris Nasus Larynx 32・4

      Pages: 381-386

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste disorders : a survey of the examination methods and treatments used in Japan2005

    • Author(s)
      Ikeda M, Sakagami M, et al.
    • Journal Title

      Acta Otolaryngol 125・11

      Pages: 1203-1210

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste disturbance after tonsillectomy and laryngomicrosurgery.2005

    • Author(s)
      Tomofuji S, et al.
    • Journal Title

      Auris Nasus Larynx 32

      Pages: 381-386

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste disorders : a survey of the examination methods and treatments used in Japan.2005

    • Author(s)
      Ikeda M, et al.
    • Journal Title

      Acta Otolaryngol 125

      Pages: 1203-1210

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste dysfunction and its recovery after middle ear surgery2005

    • Author(s)
      Sakagami M
    • Journal Title

      Chemical Senses 30(Suppl 1)

      Pages: 220-221

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Taste disturbance after tonsillectomy and laryngomicrosurgery2005

    • Author(s)
      Tomofuji S, Sakagami M, et al.
    • Journal Title

      Auris Nasus Larynx 32

      Pages: 381-386

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Taste disorders : a survey of the examination methods and treatment used in Japan2005

    • Author(s)
      Ikeda M, Sakagami M, et al.
    • Journal Title

      Acta Otolaryngol 125

      Pages: 1203-1210

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Taste function in Sjogren' s syndrome patients with special reference to clinical tests.2004

    • Author(s)
      Negoro A, Sakagami M, et al.
    • Journal Title

      Auris Nasus Larynx 31・2

      Pages: 141-148

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Observation of tongue papillae by video microscopy and contact endoscopy to investigate their correlation with taste functio2004

    • Author(s)
      Negoro A, Sakagami M, et al.
    • Journal Title

      Auris Nasus Larynx 31・3

      Pages: 255-260

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Taste function in Sjogren's syndrome patients with special reference to clinical tests.2004

    • Author(s)
      Negoro A, et al.
    • Journal Title

      Auris Nasus Larynx 31

      Pages: 141-148

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Observation of tongue papillae by video microscopy and contact endoscopy to investigate their correlation with taste function.2004

    • Author(s)
      Negoro A, et al.
    • Journal Title

      Auris Nasus Larynx 31

      Pages: 255-260

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Observation of tongue papillae by video microscopy and contact endoscopy to investigate their correlation with taste function.2004

    • Author(s)
      Negoro A, Sakagami M, et al.
    • Journal Title

      Auris Nasus Larynx 31

      Pages: 255-260

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Taste function in elderly patients with unilateral diseases2004

    • Author(s)
      Terada T, Sakagami M, et al.
    • Journal Title

      Acta Otolaryngologica Suppl 553

      Pages: 113-116

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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