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1991 Fiscal Year Final Research Report Summary

Role of Retinal Pigment Epithelium in Development and Healing of Retinal Detachment

Research Project

Project/Area Number 63570828
Research Category

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

Allocation TypeSingle-year Grants
Research Field Ophthalmology
Research InstitutionTeikyo University (1989-1990)
Kyoto University (1988)

Principal Investigator

KAWANO Shinichiro  Department of Ophthalmology, Teikyo University School of Medicine, assocate professor, 医学部, 助教授 (30201445)

Co-Investigator(Kenkyū-buntansha) INAFUKU Zentaro  Department of Ophthalmology, Teikyo University School of Medicine, assistant pro, 医学部, 助手 (10213125)
SHODA Seiichiro  Department of Ophthalmology, Teikyo University School of Medicine, assistant pro, 医学部, 助手 (50216165)
FURUYA Kazumasa  Department of Ophthalmology, Teikyo University School of Medicine, assistant pro, 医学部, 助手 (90190165)
Project Period (FY) 1988 – 1990
KeywordsRPE / retinal adhesive force / retinal detachment / retinal photocoagulation / ERG c wave / ocular ischemia / RPE proliferation / RPE増殖
Research Abstract

The retinal pigment epithelium (RPE) has a important role for normal aposition of retina, and for healing process of retinal detachment. In this study, the retinal adhesive force in living eye, the effect of panretinal photocoagulation on electroretinographic c wave and the effect of ocular ischemia on RPi function and morphology.
The adhesive force between sensory retina and RPE was measured by recording transmural pressure across detached retina with a newly developed micropressure measuring system. The retinal adhesive force of rabbit living eye was estimated to be (1.8<plus-minus>O. 2)x1O^2dyn/cm, and the adhesive force was increased by photocoagulation, cryoretinopexy, diathermy and intravenous acetazolamide injection.
DC-registerd ERG c waves were recorded from pigmented rabbit eyes before and after panretinal photocoagulation. The rabbits were subdivided into three groups according to severity of coagulation. The ERG c waves were found to disappear 3 days after coagulation in all groups, and recovery of c wave was observed in a manner suggesting that the ultimate extent of recovery in the c wave amplitude and the duration required for the re-establishment of RPE barrier function both depend on coagulated area.
Acute retinal ischemia was induced in rabbit eyes by raising the intraocular pressure above systoric blood pressure. ERG was recorded before, during and after ischemia and structural changes of retina and RPE were observed using light and electron microscopies. Ocular ischemia was found to induce RPE proliferation.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 喜多 美穂里,河野 真一郎他: "渦静脈結紮および強膜半層切除の網膜下液吸収に及ぼす影響" 日本眼科学会雑誌. 94. 263-268 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mihori Kita,Akira Negi Shinichiro Kawano et al: "Measurement of retinal adhesive force in the in vivo rabbit eye" Investigative Ophthalmology & Visual Science. 31. 624-628 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Huei-Chun Chuang,Shinichiro Kawano et al: "The influence of argon laser panretiral photocoagulation on the ERG C wave of rabbit eyes" Acta Ophthalmologica.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shinichiro Kawano et al: "Effects of ocular ischemia on retina and retinal pigment epithelium" Investigative Ophthalmology & visual Science.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mihori Kita, Akira Negi, Shinichiro Kawano, Mikki Arai and Yoshihito Honda: "The effects of vortex ligation and partial scleral resection on the sbretinal fluid resorption." Acta Soc Ophthalmol Jpn. 94. 263-268 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mihori Kita, Akira Negi, Shinichiro Kawano, Yoshihito Hond, Satoru Maegawa: "Measurement of retinal adhesive force in the in vivo rabbit eye." Investigative Ophthalmology & Visual Science. 31. 624-628 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Huei-Chun Chuang, Shinichiro Kawano, Akira Yoshihito Honda: "The influence of argon laser panretinal photocoagulation on the ERG c-wave of rabbit eyes." Acta Ophthalmologica.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinichiro Kawano, Akira Negi, Mihori Kita, Yoshihito Honda: "Effect of ocular ischemia on retina and retinal pigment epithelium."

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

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Published: 1993-03-16  

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