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Are early changes of diabetic retinopathy neuropahy or vasuculopathy?

Research Project

Project/Area Number 18K09420
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

Machida Shigeki  獨協医科大学, 医学部, 教授 (30285613)

Co-Investigator(Kenkyū-buntansha) 西村 智治  獨協医科大学, 医学部, 助教 (40633128)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords網膜電図 / ERG / 糖尿病網膜症 / 光干渉断層計血管撮影 / OCTA / OCT
Outline of Final Research Achievements

We recorded the focal macular electroretinogram (ERG) and optical coherence tomography angiography (OCTA) from 90 diabetic patients and 30 normal volunteers. There were 50 eyes without clinically apparent diabetic retinopathy (non-DR) and 40 eyes with mild to moderate non-proliferative DR (NPDR). The implicit times of the oscillatory potentials (OPs) were significantly prolonged with a decrease of the vessel density of the macula even in non-DR group. This indicates that early sign of the macular dysfunction represented by the delayed OPs attributes to the vascular abnormality.

Academic Significance and Societal Importance of the Research Achievements

糖尿病患者でみられる初期の網膜機能異常としてOPsの頂点潜時の延長はよく知られた所見である。この所見は、糖尿病網膜症を発症する以前から観察されることから、血管症ではなくneuromoduratorの変化による神経症によるものと考えられてきた。しかし、今までの研究では網膜血管異常を蛍光眼底造影で検出してきた。OCTAによる網膜毛細血管異常の検出力は、蛍光眼底造影のそれを凌いでいる。今回の結果では、網膜毛細血管の減少とOPs頂点潜時延長とが相関していたことから、血管症が網膜機能異常と同時に発症することが明らかとなった。つまり、糖尿病網膜症は神経症として発症するのではなく、血管症と関連して発症する。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019 2018

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Relationships between the vascular structure and neural function of the macula in patients with diabetic mellitus.2021

    • Author(s)
      Ebihara S, Machida S, Hara Y, Tada A, Ishizuka M, Gomnori M, Nishimura T.
    • Journal Title

      Jpn J Ophthalmol.

      Volume: 65 Issue: 1 Pages: 77-88

    • DOI

      10.1007/s10384-020-00784-7

    • NAID

      210000182118

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Retinal dysfunction of syphilitic outer retinopathy.2020

    • Author(s)
      Inoue S, Nishimura T, Takanashi N, Machida S.
    • Journal Title

      Doc Ophthalmol

      Volume: in press Issue: 2 Pages: 187-193

    • DOI

      10.1007/s10633-020-09763-2

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Comparison of photopic negative responses elicited by different conditions from glaucomatous eyes.2020

    • Author(s)
      Hara Y, Machida S, Ebihara S, Ishizuka M, Tada A, Nishimura T.
    • Journal Title

      Jpn J Ophthalmol

      Volume: 64 Issue: 2 Pages: 114-126

    • DOI

      10.1007/s10384-019-00711-5

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Changes of cone-drive function after intravitreal aflibercept in patients with age-related macular degeneration.2020

    • Author(s)
      Nishimura T, Machida S, Hara Y.
    • Journal Title

      Doc Ophthalmol

      Volume: in press Issue: 2 Pages: 137-147

    • DOI

      10.1007/s10633-020-09758-z

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Changes of focal macular and full-field electroretinograms after intravitreal aflibercept in patients with central retinal vein occlusion2020

    • Author(s)
      Nishimura T, Machida S, Hara Y
    • Journal Title

      Doc Ophthalmol.

      Volume: 141 Issue: 2 Pages: 169-179

    • DOI

      10.1007/s10633-020-09762-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Changes of focal macular and full-field electroretinograms after intravitreal aflibercept in patients with central retinal vein occlusion.2020

    • Author(s)
      Nishimura T, Machida S, Hara Y
    • Journal Title

      Doc Ophthalmol

      Volume: in press

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Macular function following intravitreal ranibizumab for macular edema associated with branch retinal vein occlusion2019

    • Author(s)
      Nishimura T, Machida S, Tada A, Oshida E, Muto T
    • Journal Title

      Doc Ophthalmol.

      Volume: 138 Issue: 1 Pages: 127-136

    • DOI

      10.1007/s10633-019-09696-5

    • Related Report
      2020 Annual Research Report 2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Correlation between macular structure and function in patients with age-related macular degeneration treated with intravitreal ranibizumab: 12-month-results2019

    • Author(s)
      Nishimura T, Machida S
    • Journal Title

      Jpn J Ophthalmol.

      Volume: 63 Issue: 1 Pages: 90-99

    • DOI

      10.1007/s10384-018-0642-1

    • NAID

      210000185273

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 糖尿病における黄斑機能と血管系との関係2020

    • Author(s)
      海老原 悟志、町田 繁樹、原 雄時、多田 篤史、石塚 匡彦、権守 真奈、西村 智治
    • Organizer
      第124回 日本眼科学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 正常眼における年齢に伴った黄斑局所網膜電図の変化2019

    • Author(s)
      石塚 匡彦、町田 繁樹、原 雄時、海老原 悟志、多田 篤史、西村 智治
    • Organizer
      第123回日本眼科総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 緑内障眼におけるphotopic negative responseの至適記録条件の検討2019

    • Author(s)
      原 雄時、町田 繁樹、海老原 悟志、石塚 匡彦、多田 篤史、西村 智治
    • Organizer
      第123回日本眼科総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 加齢黄斑変性におけるアフリベルセプト硝子体内注射後の錐体機能変化―12カ月成績―2019

    • Author(s)
      西村 智治、町田 繁樹、原 雄時
    • Organizer
      第123回日本眼科総会
    • Related Report
      2018 Research-status Report
  • [Presentation] Macular function in macular edema associated with branch retinal vein occlusion treated with intravitreal ranibizumab2019

    • Author(s)
      Nishimura T, Machida S
    • Organizer
      Association for Research in Vision and Ophthalmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Changes of optical coherence tomography angiographic findings with age in Japanese normal subjects2019

    • Author(s)
      Ebihara S, Machida S
    • Organizer
      Association for Research in Vision and Ophthalmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Comparison of photopic negative response obtained under different recording conditions from glaucomatous eyes2019

    • Author(s)
      Hara Y, Machida S, Nishimura T, Ebihara S, Ishizuka M, Tada A
    • Organizer
      Association for Research in Vision and Ophthalmology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 正常眼の光干渉断層計アンジオグラフィー所見への年齢の影響2018

    • Author(s)
      海老原 悟志、原 雄時、石塚 匡彦、多田 篤史、町田 繁樹
    • Organizer
      第72回日本臨床眼科学会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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