The effect of intraoperative application of chemically defined bioadhesive powder for trabeculectomy in rabbit eyes

• Project/Area Number: 16K11258
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Ophthalmology
• Research Institution: University of Tsukuba
• Principal Investigator: Okamoto Yoshifumi 筑波大学, 医学医療系, 講師 (00537219)
• Research Collaborator: Arai Mikki 新井眼科医院
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 緑内障手術 / 癒着防止 / 眼科

Outline of Final Research Achievements

This study was conducted to examine the effect of chemically defined bioadhesive powder for anti-fibrosis in rabbit eyes undergoing trabeculectomy. No significant inflammation and infection was observed in both chemically defined bioadhesive powder and control group with various inspections. The present results indicates that intraoperative use of chemically defined bioadhesive powder may inhibit the formation of postoperative adhesion around the conjunctiva and sclera.
Based on the above results, a patent application was completed in 2022 as "Ophthalmic anti-adhesion material and its manufacturing method.

Academic Significance and Societal Importance of the Research Achievements

緑内障手術において術後の組織癒着を防止するため1990年初頭から現在まで、線維芽細胞抑制剤であるマイトマイシンＣを創口および結膜下に暴露させることで創口の創傷治癒を抑制し癒着防止をはかることがゴールドスタンダードとなっている。しかし、マイトマイシンＣの使用は健常細胞の正常な増殖も抑制するため、失明に至る重篤な合併症も報告されている。このため今日まで、新しい安全な緑内障手術方式の開発は緑内障治療における大きなテーマであるといえる。今回の癒着防止剤としての組織シーラントの研究開発は長らく足踏みをしている緑内障手術を飛躍的に前進させうるものである。

Research Products

• [Presentation] The effect of intraoperative application of chemically defined bioadhesive powder for trabeculectomy in rabbit eyes (2016)
  • Author(s): Yoshifumi Okamoto, Sujin Hoshi, Mikki Arai, Genichiro Kishino, Fumiki Okamoto, Tetsuro Oshika
  • Organizer: The Annual Meeting of the Association for Research in Vision and Ophthalmology
  • Place of Presentation: Washington State Convention Center（アメリカ合衆国）
  • Year and Date: 2016-05-01
  • Int'l Joint Research
• [Presentation] 家兎眼の線維柱帯切除術に対するLYDEXの術中塗布の効果 (2016)
  • Author(s): 岡本芳史、星崇仁、新井三樹、木住野源一郎、岡本史樹、大鹿哲郎
  • Organizer: 第120回日本眼科学会総会
  • Place of Presentation: 仙台国際センター
  • Year and Date: 2016-04-07