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Investigation of the causes of refractory macular edema based on in vivo imaging of retinal neuroglia

Research Project

Project/Area Number 20K09771
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionKyoto University

Principal Investigator

Muraoka Yuki  京都大学, 医学研究科, 助教 (00739089)

Co-Investigator(Kenkyū-buntansha) 宮田 学  京都大学, 医学研究科, 講師 (00548505)
辻川 明孝  京都大学, 医学研究科, 教授 (40402846)
宇治 彰人  京都大学, 医学研究科, 特定助教 (60534302)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsadaptive optics / OCT / AO-OCT / retina / macular edema / Muller cells / 補償光学 / 視細胞 / グリア細胞 / ミューラー細胞 / 細胞の生体イメージング / 網膜 / 毛細血管瘤 / 黄斑浮腫 / 糖尿病網膜症 / 網膜静脈閉塞症 / 網膜神経グリア / 補償光学OCT
Outline of Research at the Start

網膜循環疾患では、血液網膜柵の破綻により黄斑浮腫がしばしば生じ、その場合に重篤な視力障害が惹起される。近年の抗VEGF治療の導入によって、従来の方法に比べ強力に浮腫を制御できるようになってきたが、黄斑浮腫の再発や治療無効の問題にしばしば遭遇する。
OCTは網膜の層構造を生体でライブイメージングできる利点を有するが、従来型のこのOCTでは、網膜組織を構成する神経・グリアを細胞レベルでは解像できない。
本研究では、この網膜の神経・グリア細胞と、血管細胞との連関を生体で包括的に評価し、これらの変化が黄斑浮腫の形成と吸収の素過程にどのように関連しているのかを明らかにする。

Outline of Final Research Achievements

We have been engaged in the development of adaptive optics optical coherence tomography (AO-OCT) for real-time imaging of the human retinal structure at a cellular level. Utilizing the AO-OCT, we have successfully imaged the macular region of the retina in subjects with normal eyes, retinal circulatory diseases. For the first time in human retina, we have managed to visualize the morphology of individual cone photoreceptor cells and Muller cells in the human macular retina. This achievement has been reported in an international journal (Transl Vis Sci Technol. 2021).Furthermore, we have discovered characteristics in the morphology of retinal Muller cells related to macular edema and have reported this finding at both domestic and international conferences.

Academic Significance and Societal Importance of the Research Achievements

本研究により、ヒト網膜の細胞レベルでのリアルタイムイメージングが可能になるとともに、これらによって得られた網膜細胞所見と黄斑浮腫などの組織所見との関連が示され、眼疾患の診断・治療に新たな道筋を示された。また、個々の視細胞やミューラーグリア細胞の形態を初めて可視化したことで、眼科医療の精度向上が期待されるだけでなく、これらの細胞が果たす役割を理解することで、さまざまな視覚障害の治療法の開発につながる可能性がある。さらに、眼疾患に対する理解の進展は、患者のQOL向上につながるとともに、社会全体の視覚健康の向上に寄与する可能性がある。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Peer Reviewed: 9 results,  Open Access: 3 results) Presentation (5 results) (of which Invited: 3 results)

  • [Journal Article] Structural Changes in Acute Macular Neuroretinopathy Revealed With Adaptive Optics Optical Coherence Tomography2023

    • Author(s)
      Kadomoto S, Muraoka Y, Ooto S, Tsujikawa A
    • Journal Title

      JAMA Ophthalmol

      Volume: 141 Issue: 4 Pages: 400-402

    • DOI

      10.1001/jamaophthalmol.2022.6394

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Split-detection adaptive optics imaging for cytoid body-like materials in a cotton wool spot2023

    • Author(s)
      Kadomoto S, Muraoka Y, Sadda S.
    • Journal Title

      Can J Ophthalmol

      Volume: S0008-4182 Issue: 5 Pages: 78-79

    • DOI

      10.1016/j.jcjo.2023.03.002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Foveal Thickness Fluctuation in Anti-VEGF Treatment for Branch Retinal Vein Occlusion: A Long-term Study2022

    • Author(s)
      Nagasato Daisuke、Muraoka Yuki、Tanabe Mao、Nishigori Naomi、Osaka Rie、Mitamura Yoshinori、Tabuchi Hitoshi、Kadomoto Shin、Murakami Tomoaki、Ooto Sotaro、Suzuma Kiyoshi、Tsujikawa Akitaka
    • Journal Title

      Ophthalmology Retina

      Volume: - Issue: 7 Pages: 567-574

    • DOI

      10.1016/j.oret.2022.02.008

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Retinal arterial macroaneurysm rupture caused by dissection-like change in the vessel wall2022

    • Author(s)
      Ishikura Masaharu、Muraoka Yuki、Kadomoto Shin、Nishigori Naomi、Murakami Tomoaki、Ooto Sotaro、Tsujikawa Akitaka
    • Journal Title

      American Journal of Ophthalmology Case Reports

      Volume: 25 Pages: 101346-101346

    • DOI

      10.1016/j.ajoc.2022.101346

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three-dimensional locations of ruptured retinal arterial macroaneurysms and their associations with the visual prognosis2022

    • Author(s)
      Sakaguchi Saori、Muraoka Yuki、Kadomoto Shin、Ooto Sotaro、Murakami Tomoaki、Nishigori Naomi、Ishikura Masaharu、Miyake Masahiro、Miyata Manabu、Uji Akihito、Tsujikawa Akitaka
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 503-503

    • DOI

      10.1038/s41598-021-04500-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrastructure of Hard Exudates in Retinal Vein Occlusion2021

    • Author(s)
      Kadomoto Shin、Muraoka Yuki、Uji Akihito
    • Journal Title

      Ophthalmology Retina

      Volume: 5 Issue: 8 Pages: 796-796

    • DOI

      10.1016/j.oret.2021.04.014

    • Related Report
      2021 Research-status Report
  • [Journal Article] Human Foveal Cone and M?ller Cells Examined by Adaptive Optics Optical Coherence Tomography2021

    • Author(s)
      Kadomoto Shin、Muraoka Yuki、Uji Akihito、Ooto Sotaro、Kawai Kentaro、Ishikura Masaharu、Nishigori Naomi、Akagi Tadamichi、Tsujikawa Akitaka
    • Journal Title

      Translational Vision Science & Technology

      Volume: 10 Issue: 11 Pages: 17-17

    • DOI

      10.1167/tvst.10.11.17

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hemodynamic and structural changes in retinal arterial macroaneurysm after intravitreal anti-vascular endothelial growth factor injection2021

    • Author(s)
      Kadomoto Shin、Muraoka Yuki、Uji Akihito、Ooto Sotaro、Murakami Tomoaki、Tsujikawa Akitaka
    • Journal Title

      American Journal of Ophthalmology Case Reports

      Volume: 23 Pages: 101182-101182

    • DOI

      10.1016/j.ajoc.2021.101182

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Macular Cone Abnormalities in Bechet's Disease Detected by Adaptive Optics Scanning Light Ophthalmoscope2021

    • Author(s)
      Kadomoto S, Uji A, Arichika S, Muraoka Y, Kido A, Nishijima K, Akagi T, Kawai K, Tsujikawa A
    • Journal Title

      Ophthalmic Surg Lasers Imaging Retina

      Volume: 52 Issue: 4 Pages: 218-225

    • DOI

      10.3928/23258160-20210330-06

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ultrastructure and hemodynamics of microaneurysms in retinal vein occlusion examined by an offset pinhole adaptive optics scanning light ophthalmoscope2020

    • Author(s)
      Kadomoto S, Muraoka Y, Uji A, Tamiya R, Ooto S, Murakami T, Oritani Y, Kawai K, Tsujikawa A
    • Journal Title

      Biomed Opt Express

      Volume: 11 Issue: 11 Pages: 6078-6092

    • DOI

      10.1364/boe.402331

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Pathologies in Epiretinal Membrane: An Adaptive Optics Optical Coherence Tomography Study2023

    • Author(s)
      Yuki Muraoka
    • Organizer
      Fujiretina 2023
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Association Between Foveal Neuroglial Changes and Metamorphopsia in Epiretinal Membrane2023

    • Author(s)
      Masaharu Ishikura, Yuki Muraoka, Naomi Nishigori, Takahiro Kogo, Shogo Numa, Kenji Ishihara, Masayuki Hata, Akitaka Tsujikawa
    • Organizer
      Fujiretina 2023
    • Related Report
      2022 Annual Research Report
  • [Presentation] OCTによる眼病態の診断Diagnosis of Ocular Pathologies Based on Optical Coherence Tomography2022

    • Author(s)
      村岡勇貴
    • Organizer
      第43回炎症再生医学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 補償光学光干渉断層計による 黄斑部網膜グリアの細胞イメージング2022

    • Author(s)
      村岡勇貴
    • Organizer
      第43回日本レーザー医学会総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] In vivo Imaging of Human FoveaUsing Adaptive Optics Optical Coherence Tomography2020

    • Author(s)
      Shin Kadomoto, Yuki Muraoka, Akihito Uji, Sotaro Ooto, Masaharu Ishikura, Akitaka Tsujikawa
    • Organizer
      第59回日本網膜硝子体学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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