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Hybrid restortion of vision using electrical stimulation on retinitis pigmentosa

Research Project

Project/Area Number 18K19616
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionOsaka University

Principal Investigator

Fujikado Takashi  大阪大学, 大学院生命機能研究科, 特任教授 (50243233)

Co-Investigator(Kenkyū-buntansha) 三橋 俊文  帝京大学, 医療技術学部, 教授 (20506266)
三好 智満  大阪大学, 大学院医学系研究科, 助教 (70314309)
Project Period (FY) 2018-06-29 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords網膜イメージング / 軸索 / 樹状突起 / GFP / Thy-1プロモーター / GCaMP / Thy-1プロモーター / GFP / 網膜神経節細胞 / イメージング
Outline of Final Research Achievements

Observation of retinal ganglion cells and cerebral cortical cells in living rats using a small simple fluorescence microscope developed independently was possible in rats expressing GFP by the Thy-1 promoter. Observations showed that intraretinal structures, such as ganglion cell axons and dendrites, could be observed that could not be observed in vivo by other methods. In addition, in order to observe neuronal activity in vivo, we succeeded in creating GCaMP-transfected rats in which fluorescence intensity changes according to calcium concentration. In the future, we plan to try fluorescence imaging during electrical stimulation of GCaMP-introduced rats.

Academic Significance and Societal Importance of the Research Achievements

緑内障最初期には、網膜神経節細胞軸索の活動が低下することが知られているが、その早期診断は困難である。本研究では、小型蛍光顕微鏡を開発し、GFPを発現したラットを用いて、網膜および大脳視覚野で、神経細胞を解剖学的に詳細に描出することに成功した。さらに、機能性蛍光タンパクを網膜内の神経節細胞と視覚領の神経細胞に遺伝的に組み込んだラットの作成に成功し、光刺激に対する初期視覚経路の活動を、時空間特性も含め調べる準備ができた。今後は、緑内障最初期のモデルラットに対して、神経節細胞軸索の活動の低下が脳の活動に及ぼす影響を調べ、解析することにより、緑内障の超早期診断に繋がる可能性がある。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (48 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (18 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 18 results,  Open Access: 17 results) Presentation (20 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Book (10 results)

  • [Journal Article] The influence of stimulating electrode conditions on electrically evoked potentials and resistance in suprachoroidal transretinal stimulation2023

    • Author(s)
      Nishida Kentaro、Morimoto Takeshi、Terasawa Yasuo、Sakaguchi Hirokazu、Kamei Motohiro、Miyoshi Tomomitsu、Fujikado Takashi、Nishida Kohji
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: 67 Issue: 2 Pages: 182-188

    • DOI

      10.1007/s10384-022-00972-7

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of ocular biometry in the Japanese population using a multicenter approach: Prospective observational study2022

    • Author(s)
      Kawamorita Takushi、Uozato Hiroshi、Oshika Tetsuro、Negishi Kazuno、Fujikado Takashi、Murakami Akira、Kamiya Kazutaka、Maeda Naoyuki、Ueno Yuta、Onuma Kazuhiro、Hirota Masakazu、Hoshikawa Rie、Masui Sachiko、Yamaguchi Masahiro、Mihashi Toshifumi
    • Journal Title

      PLOS ONE

      Volume: 17 Issue: 7 July Pages: 0271814-0271814

    • DOI

      10.1371/journal.pone.0271814

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Extensive Macular Atrophy with Pseudodrusen in a Japanese Patient Evaluated by Wide-Field OCTA2022

    • Author(s)
      Sato Shigeru、Morimoto Takeshi、Fujikado Takashi、Tanaka Sayaka、Tsujikawa Motokazu、Nishida Kohji
    • Journal Title

      Case Reports in Ophthalmology

      Volume: 13 Issue: 3 Pages: 847-854

    • DOI

      10.1159/000526970

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characteristics of Higher-Order Aberrations in Different Stages of Keratoconus2022

    • Author(s)
      Koh Shizuka、Inoue Ryota、Maeno Sayo、Mihashi Toshifumi、Maeda Naoyuki、Jhanji Vishal、Nishida Kohji
    • Journal Title

      Eye & Contact Lens: Science & Clinical Practice

      Volume: 48 Issue: 6 Pages: 256

    • DOI

      10.1097/icl.0000000000000897

    • URL

      https://pure.teikyo.jp/en/publications/dfae171f-897c-457f-8b44-1db0aca27a86

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Comparison of Ocular Wavefront Aberration Measurements Obtained Using Two Hartmann-Shack Wavefront Aberrometers2022

    • Author(s)
      Koh Shizuka、Inoue Ryota、Iwamoto Yuuri、Mihashi Toshifumi、Soma Takeshi、Maeda Naoyuki、Nishida Kohji
    • Journal Title

      Eye & Contact Lens: Science & Clinical Practice

      Volume: 49 Issue: 3 Pages: 98

    • DOI

      10.1097/icl.0000000000000965

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Precise retinal shape measurement by alignment error and eye model calibration2022

    • Author(s)
      Palchunova Kseniya、Mino Toshihiro、Mihashi Toshifumi、Liu Jonathan、Tasaki Kuniharu、Hasegawa Yumi、Hiraoka Takahiro、Oshika Tetsuro
    • Journal Title

      Optical Review

      Volume: 29 Issue: 3 Pages: 188

    • DOI

      10.1007/s10043-022-00733-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spatial Resolution of Suprachoroidal?Transretinal Stimulation Estimated by Recording Single-Unit Activity From the Cat Lateral Geniculate Nucleus2021

    • Author(s)
      Miyoshi Tomomitsu、Morimoto Takeshi、Sawai Hajime、Fujikado Takashi
    • Journal Title

      Frontiers in Neuroscience

      Volume: 15 Pages: 717429-717429

    • DOI

      10.3389/fnins.2021.717429

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Depth Perception with a Newly Developed Microscope Stereotest2021

    • Author(s)
      Shinomiya Kayo、Fujikado Takashi、Kitora Akiko、Okamoto Satoe、Iwata Akiko、Ogushi Yoko、Mitamura Yoshinori
    • Journal Title

      Clinical Ophthalmology

      Volume: Volume 15 Pages: 3901-3908

    • DOI

      10.2147/opth.s326695

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficacy and safety of 0.01% atropine for prevention of childhood myopia in a 2-year randomized placebo-controlled study2021

    • Author(s)
      Osamu Hieda , Takahiro Hiraoka , Takashi Fujikado,et al
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: - Issue: 3 Pages: 315-325

    • DOI

      10.1007/s10384-021-00822-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Efficient measurements for the dynamic range of human lightness perception2021

    • Author(s)
      Horiguchi Hiroshi、Suzuki Eiji、Kubo Hiroyuki、Fujikado Takashi、Asonuma Sanae、Fujimoto Chihomi、Tatsumoto Muneto、Fukuchi Takeo、Sakaue Yuta、Ichimura Mika、Kurimoto Yasuo、Yamamoto Midori、Nakadomari Satoshi
    • Journal Title

      Japanese Journal of Ophthalmology

      Volume: - Issue: 3 Pages: 432-438

    • DOI

      10.1007/s10384-020-00808-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simultaneous measurement of objective and subjective accommodation in response to step stimulation2020

    • Author(s)
      Hirota Masakazu、Morimoto Takeshi、Miyoshi Tomomitsu、Fujikado Takashi
    • Journal Title

      Investigative Opthalmology & Visual Science

      Volume: 61 Issue: 13 Pages: 38-38

    • DOI

      10.1167/iovs.61.13.38

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Complete Visual Recovery From Severe Outer Retinitis After Tonsillitis2020

    • Author(s)
      Kawashima Rumi、Matsushita Kenji、Hashida Noriyasu、Kuniyoshi Kazuki、Fujikado Takashi、Nishida Kohji
    • Journal Title

      Journal of Neuro-Ophthalmology

      Volume: Publish Ahead of Print Issue: 4 Pages: 1-1

    • DOI

      10.1097/wno.0000000000001073

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel mutation identified in Leber congenital amaurosis - a case report2020

    • Author(s)
      Sato Shigeru、Morimoto Takeshi、Tanaka Sayaka、Hotta Kikuko、Fujikado Takashi、Tsujikawa Motokazu、Nishida Kohji
    • Journal Title

      BMC Ophthalmology

      Volume: 20 Issue: 1 Pages: 313-313

    • DOI

      10.1186/s12886-020-01577-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Objective evaluation of visual fatigue in patients with intermittent exotropia2020

    • Author(s)
      Masakazu Hirota , Kozue Yada , Takeshi Morimoto , Takao Endo , Tomomitsu Miyoshi , Suguru Miyagawa , Yoko Hirohara , Tatsuo Yamaguchi , Makoto Saika , Takashi Fujikado
    • Journal Title

      PloS one

      Volume: 15 Issue: 3 Pages: 1-16

    • DOI

      10.1371/journal.pone.0230788

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Binocular Coordination during Smartphone Reading in Esophoric Patients2020

    • Author(s)
      Masakazu Hirota, Takeshi Morimoto, Tomomitsu Miyoshi, Takashi Fujikado.
    • Journal Title

      Journal of Binocular Vision and Ocular Motility

      Volume: 70 Issue: 1 Pages: 15

    • DOI

      10.1080/2576117x.2019.1690349

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] An update on retinal prostheses2019

    • Author(s)
      Ayton Lauren N.、Barnes Nick、Dagnelie Gislin、Fujikado Takashi、Goetz Georges、Hornig Ralf、Jones Bryan W.、Muqit Mahiul M.K.、Rathbun Daniel L.、Stingl Katarina、Weiland James D.、Petoe Matthew A.
    • Journal Title

      Clinical Neurophysiology

      Volume: 131 Issue: 6 Pages: 1383-1398

    • DOI

      10.1016/j.clinph.2019.11.029

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Eleven-year follow-up of a Japanese retinitis pigmentosa patient with an HK1 gene mutation.2019

    • Author(s)
      Sato S, Morimoto T, Hotta K, Fujikado T, Nishida K
    • Journal Title

      Ophthalmic Genet.

      Volume: 40 Issue: 5 Pages: 466-469

    • DOI

      10.1080/13816810.2019.1678179

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Using redox-sensitive mitochondrial cytochrome Raman bands for label-free detection of mitochondrial dysfunction.2019

    • Author(s)
      Morimoto T, Chiu LD, Kanda H, Kawagoe H, Ozawa T, Nakamura M, Nishida K, Fujita K, Fujikado T
    • Journal Title

      Analyst

      Volume: 144 Issue: 8 Pages: 25312540-25312540

    • DOI

      10.1039/c8an02213e

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 老視基礎研究の過去・現在・未来2023

    • Author(s)
      不二門 尚
    • Organizer
      第1回日本老視学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] デジタルデバイス時代の小児の視機能管理2023

    • Author(s)
      不二門 尚
    • Organizer
      愛知県眼科医会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 西円州家のリビング2022

    • Author(s)
      不二門 尚
    • Organizer
      第126回日本眼科学会総会 市民公開講座
    • Related Report
      2022 Annual Research Report
  • [Presentation] 近視化の機構に興味を持って35年2022

    • Author(s)
      不二門 尚
    • Organizer
      第4回日本近視学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 視覚障がい乳幼児に対する医療機関と視覚支援学校・施設の連携実態調査2022

    • Author(s)
      不二門 尚、仁科幸子、木村利男、中野泰志
    • Organizer
      第23回日本ロービジョン学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 強度近視抑制には眼鏡2022

    • Author(s)
      不二門 尚
    • Organizer
      第65回日本コンタクトレンズ学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 視機能に嵌って35年2022

    • Author(s)
      不二門 尚
    • Organizer
      第63回日本視能矯正学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] プリズムの眼光学と臨床応用2022

    • Author(s)
      不二門 尚
    • Organizer
      眼光学チュートリアルセミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高度医療とロービジョンケア(人工網膜を中心に)2022

    • Author(s)
      不二門 尚
    • Organizer
      眼科スタッフ教育講座
    • Related Report
      2022 Annual Research Report
  • [Presentation] 視機能に嵌って35年2022

    • Author(s)
      不二門 尚
    • Organizer
      第63回日本視機能矯正学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] STS型人工網膜の利点と限界2022

    • Author(s)
      不二門 尚
    • Organizer
      第42回日本眼薬理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小児眼科と眼光学(近視、不正乱視への対応)2022

    • Author(s)
      不二門 尚
    • Organizer
      第19回小児眼科診療セミナー
    • Related Report
      2022 Annual Research Report
  • [Presentation] メタバース時代の両眼視機能の考え方2022

    • Author(s)
      不二門 尚
    • Organizer
      富山眼科学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 調節・コントラスト・グレア検査2022

    • Author(s)
      不二門 尚
    • Organizer
      視機能訓練士生涯教育プログラム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 近視進行防止の現状2021

    • Author(s)
      不二門 尚
    • Organizer
      第213回宮城県眼科集談会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 人工網膜による視覚再建2020

    • Author(s)
      不二門 尚
    • Organizer
      第21回日本ロービジョン学会シンポジウム視覚再建の近未来
    • Related Report
      2020 Research-status Report
  • [Presentation] 視力:測定法 表示法2020

    • Author(s)
      不二門 尚
    • Organizer
      第74回日本臨床眼科学会シンポジウム視力・視覚生理
    • Related Report
      2020 Research-status Report
  • [Presentation] 網膜色素変性に対する治療の展望:人工網膜を中心に2020

    • Author(s)
      不二門 尚
    • Organizer
      第2回沖縄眼科臨床懇話会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Novel OPA1 gene mutations in Japanese patients with optic atrophy2019

    • Author(s)
      SHIGERU SATO; Noriyasu Hashida; Takeshi Morimoto; Kikuko Hotta; Takeshi Fujikado; Kohji Nishida
    • Organizer
      2019 ARVO meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 動物用の網膜高倍率蛍光イメージング光学系とラット生体の網膜神経節細胞2018

    • Author(s)
      三橋俊文,三好智満,小木美恵子, 大鹿哲郎, 不二門尚,
    • Organizer
      日本眼科学会
    • Related Report
      2018 Research-status Report
  • [Book] 年代別・目的別 眼鏡コンタクトレンズ処方-私はこうしてるー眼鏡処方の基本2022

    • Author(s)
      不二門 尚
    • Publisher
      全日本病院出版社
    • Related Report
      2022 Annual Research Report
  • [Book] 【子どもの近視の眼鏡処方】とくに注意したい病態の眼鏡処方 不同視を伴う近視2022

    • Author(s)
      不二門 尚
    • Publisher
      あたらしい眼科
    • Related Report
      2022 Annual Research Report
  • [Book] 人工感覚器の最新情報「最貧の人工視覚器」2022

    • Author(s)
      不二門 尚
    • Publisher
      耳鼻咽喉科
    • Related Report
      2022 Annual Research Report
  • [Book] 「子どもの近視・大人の近視」VDT環境と近視2022

    • Author(s)
      不二門 尚
    • Publisher
      日本医師会雑誌
    • Related Report
      2022 Annual Research Report
  • [Book] 視角障害児に対する医療・福祉・教育機関の連携2022

    • Author(s)
      不二門 尚
    • Publisher
      全日本病院出版社
    • Related Report
      2022 Annual Research Report
  • [Book] 調節異常(調節緊張・調節痙攣、IT眼症など)の診断と治療について2022

    • Author(s)
      中島 伸子、不二門 尚
    • Publisher
      金原出版
    • Related Report
      2022 Annual Research Report
  • [Book] 「COVID-19」各論:COVID-19の流行がもたらした子どもたちへの影響2022

    • Author(s)
      不二門 尚
    • Publisher
      東京医学社
    • Related Report
      2022 Annual Research Report
  • [Book] Pathologic Myopia (Prevention of Myopia Progression in Children and Adolescents) Richard F. Spaid, Kyoko Ohno-Matsui, Lawrence A. Yannuzzi Editors2021

    • Author(s)
      Takashi Fujikado
    • Publisher
      Springer
    • Related Report
      2021 Research-status Report
  • [Book] あたらしい眼科【屈折矯正に関する話題】近業による近視化への対処法 ポストコロナ時代を見据えて2020

    • Author(s)
      不二門 尚
    • Publisher
      メディカル葵出版
    • Related Report
      2020 Research-status Report
  • [Book] 医学のあゆみ【ブレイン・マシン・インターフェース(BMI)-臨床応用の展望】網膜電気刺激による視覚再建2020

    • Author(s)
      不二門 尚
    • Publisher
      医歯葉出版
    • Related Report
      2020 Research-status Report

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Published: 2018-07-25   Modified: 2024-01-30  

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