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1999 Fiscal Year Final Research Report Summary

RELATIONSHIP BETWEEN INSUFFICIENCY OF TRNSMUCOSAL GAS EXCHANGE AND REFRACTORINESS OF MIDDLE EAR INFLAMMATORY DISEASE-EXPERIMENTAL AND CLINICAL STUDY.

Research Project

Project/Area Number 09671762
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionTHE JIKEI UNIVERSITY SCHOOL OF MEDICINE

Principal Investigator

AOKI Kazuhiro  THE JIKEI UNIVERSITY SCHOOL OF MEDICINE,OTOLARYNGOLOGY,ASSOCIATE PROFESSOR, 医学部・耳鼻咽喉科, 助教授 (10130139)

Co-Investigator(Kenkyū-buntansha) UTAHASHI Hiroya  THE JIKEI UNIVERSITY SCHOOL OF MEDICINE,OTOLARYNGOLOGY,ASSISTANT, 医学部・耳鼻咽喉科, 助手 (60287208)
HAMADA Yukio  THE JIKEI UNIVERSITY SCHOOL OF MEDICINE,OTOLARYNGOLOGY,ASSISTANT, 医学部・耳鼻咽喉科, 助手 (60277069)
MITANI Yukie  THE JIKEI UNIVERSITY SCHOOL OF MEDICINE,OTOLARYNGOLOGY,ASSISTANT, 医学部・耳鼻咽喉科, 助手 (30233894)
Project Period (FY) 1997 – 1999
KeywordsMIDDLE EAR VOLUME / MUCOSAL LESION IN THE MIDDLE EAR CAVITY / MIDDLE EAR TOTAL PRESSURE / TRANSMUCOSAL GAS EXCHANGE FUNCTION / COィイD22ィエD2 DIFFUSION / OィイD22ィエD2 ABSORPTION
Research Abstract

Mucosal lesion in the middle ear pneumatic space is closely related to the suppression of pneumatization. A transmucosal gas exchange function is clearly present in the mucosal epithelium of the middle ear pneumatic space. In persistent middle ear inflammation as represented by OME, the subepithelial layer of the middle ear mucosa is damaged, and the gas exchange function, mainly of diffusion of COィイD22ィエD2, is suppressed. Change in the TP in the middle ear cavity observed in patients with indwelt tube is also thought to be related to this gas exchange function ; the peak value of the TP had was lower in patients with severer mucosal lesion. In these patients, the peak value of the TP had increased after 18 or more months of tube indwelling, when the mucosa of middle ear cavity seemed to be recovered normal thin mucosa. This mucosal normalization was especially important in subepithelium because of thin layer with many capillary networks. This subepithelial mucosal normalizaiton was also confirmed by the repneumatization of the mastoid cell after two years of treatment. Therefore, it is assumed that the intractability of OME with suppressed mastoid cells is affected by the insufficiency of transmucosal gas exchange function, so the transmucosal gas exchange is involved in the on set and healing process of middle ear mucosal disease when it seems likely that normalization of transmucosal gas exchange function follows resolution of middle ear inflammation and the subsequent mucosal inflammation, and it is possible to estimate the severity of mucosal lesion by measuring the peak value of the TP.

  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Aoki K.: "Relationship Between Middle Ear Pressure, Mucosal Lesion, and Mastoid Pneumatization"Laryngoscope. 108. 1840-1845 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Aoki K.: "Transmucosal Gas Exchange in The Pneumatic Middle Ear Cavity-An experimental study in animals"Otitis Media Today.. 3. 487-492 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hamada Y.: "Transmucosal Gas Exchange in Middle Ear Cavity-Experimental study 2"Otitis Media Today.. 3. 493-498 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 青木和博: "滲出性中耳炎病態の遷延因子と治癒過程"都耳鼻会報. 99. 88-93 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Aoki K.: "Relationship between severity of middle ear mucosal lesion and middle ear pneumatic space volumein patients with otitis media with effusion"Acta Otolaryngol(Stockh). 119. 562-567 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 歌橋弘哉: "小児滲出性中耳炎の治療成績"耳鼻咽喉科展望. 42. 493-500 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Aoki K.: "Relationship Between Middle Ear Pressure, Mucosal Lesion, and Mastoid Pneumatization."Laryngoscope. 108. 1840-1845 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Aoki K.: "Transmucosal Gas Exchange in The Pneumatic Middle Ear Cavity-An experimantal study in animals."Otitis Media Today. 3. 487-492 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hamada Y.: "Transmucosal Gas Exchange in Middle Ear Cavity-Experimental study 2."Otitis Media Today. 3. 493-498 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Aoki K.: "Relationship between severity of middle ear mucosal lesion and middle ear pneumatic space volume in patients with otitis media with effusion."Acta Otolaryngol(Stockh). 119. 562-567 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Utahasi H.: "Treatment outcome of otitis media with effusion in children."Oto-Rhino-Laryngology, Tokyo. 42. 493-500 (1999)

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

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Published: 2001-10-23  

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