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EFFECTS OF IMMUNE CHEMICAL MEDIATORS TO THE INNER EAR SENSORY CELLS

Research Project

Project/Area Number 06671741
Research Category

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

Allocation TypeSingle-year Grants
Research Field Otorhinolaryngology
Research InstitutionKANSAI MEDICAL UNIVERSITY

Principal Investigator

TOMODA Koichi  KANSAI MEDICAL UNIVERSITY,ASSOCIATE PROFESSOR, 医学部, 助教授 (50164041)

Co-Investigator(Kenkyū-buntansha) INOUE Toshiya  KANSAI MEDICAL UNIVERSITY ASSISTANT, 医学部, 助手 (70223261)
HARADA Narinobu  KANSAI MEDICAL UNIVERSITY ASSISTANT, 医学部, 助手 (00198920)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsInner ear immunology / Chemical mediators / Histamine receptors / Intracellular calcium ion concentration / Inner ear sensory cells / ヒスタミン / 細胞内カルシウム / 前庭有毛細胞 / レセプターアンタゴニスト / 免疫学 / サイトカイン / 蝸牛有毛細胞 / 細胞生物学
Research Abstract

The main purpose of this study is to investigate the effects of immune chemical mediators to intracellular calcium ion concentration in the inner ear sensory cells. [Method] The sensory hair cells from ICR mice cochlea or guinea pig cochlea and vestibule were isolated mechanically by pipetting in the physiological salt solution. The cells were loaded with calcium sensitive dye, Fura-2AM.The analysis of intracellular calcium ion concentration was done by a fluorescence intensity ratio with 340/380nm using ARGUS-100CA.[Results] 1) The [Ca^<2+>]i concentration of cochlear hair cells after exposure to interleukin (1alpha, 2,6) and histamine was increased and reached a maximum level at 60 sec. However there was no response under extra-cellular calcium free conditions. 2) The [Ca^<2+>]i concentration of vestibular hair cells after exposure to interleukin (1alpha, 2), histamine and PAF was increased, however there was no response under extracellular calcium free conditions. The histamine-induced calcium response was blocked by receptor blockers : Promethazine (H1 antagonist), Cimetidine (H2 antagonist) and Thioperamide (H3 antagonist). [Conclusion] These results suggest the presence of receptors such as interleukin, histamine or PAF on the cell surface of cochlear or vestibular hair cells and that these immune chemical mediators may directly influence upon the cell function and signal transduction of the auditory or vestibular system under the immuno-pathological conditions.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] Harada N.et al: "Intracellcclar calcium cbanges by hyposmotic activation of coclclear Outer bani cells in the guinea pig." Acta Otolanyngol. 114. 510-515 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoda K.et al: "Effect of histamine on intacellular Ca^<2+> unantration in the guinea pig isolated vestibular hair cells." Acea Otolanyngol. Suppl(印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoda K et al: "Human vestibular hair cell:Its isolation and calcium molilization" J of Vestikular Research. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Nagata M.et al: "Effects of extracellular ATP on intracellulorr Ca^<2+> in vestibular hair ulls." Acta Otolaryngol. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoda K et al: "Immunoliology in Olorhinolaryngology" Kugular Publication,Amsterdam, 674 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Harada N,Ernst A,Zenner HP: "Intracellular calcium changes by hyposmotic activation of cochlear outer hair cells in the guinea pig." Acta Otolaryngol. 114. 510-515 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoda k, Nagata M,Harada N,Iwai H,Yamashita T.: "Effect of histamine on intracellular Ca^<2+> concentration in the guinea pig isolated vestibular hair cells." Acta Otolaryngol. Suppl 528 (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoda K,Chen L,Harada N,Ohtani M,Iwai H,Yamashita T: "Human vestibular hair cell : Its isolation and calcium mobilization." J Vestibular Research. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Nagata M,Tomoda K,Harada N,Cho H,Inoue T,Yamashita T: "Effects of extracellular ATP on intracellular Ca^<2+> in vestibular hair cells." Acta Otolaryngol. (submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoda K,Nagata M,Harada N,Cho H,Yamashita T: "Effects of cytokines on the intracellular calcium concentration in the inner ear sensory cells. In : Immunobiology in Otorhinolaryngology. edited by Mogi G,Veldman JE,Kawauchi H." Kuguler Publications, Amsterdam. 325-327 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 友田幸一 他: "免疫活性物質の内耳感覚細胞内カルシウムイオン動態に及ぼす影響" Otology Japan. (発表予定).

    • Related Report
      1995 Annual Research Report
  • [Publications] 友田幸一 他: "Effects of histamine to intracellular calcium ion concentration in the inner ear sensory cells" Acta Otoloryngol. (発表予定).

    • Related Report
      1995 Annual Research Report
  • [Publications] Koichi Tomoda, etal.: "Immunobiology in Otorhinolaryngology" Kugler Publications, Awsterdaw, 674 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] Koichi Tomoda,et al: "Effects of IL-2 on the intracellular calcium concentration in the cochlea hair cells" Hearing Research. (発表予定).

    • Related Report
      1994 Annual Research Report
  • [Publications] Koichi Tomoda et al.: "Immunobiology in Otorhinolaryngology" Kugler Publications,Amsterdam, 674 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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