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Gut microbiome and genetic variants in exudative age-related macular degeneration

Research Project

Project/Area Number 19K18831
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Yasuda Masayuki  東北大学, 大学病院, 助教 (00569585)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords加齢黄斑変性 / 酸化ストレス / 腸内細菌叢 / 滲出型加齢黄斑変性 / 遺伝子変異
Outline of Research at the Start

世界に類のない超高齢社会を迎える本邦において、失明原因として増加を続ける加齢黄斑変性は生活の質の維持や医療経済的にも多くの問題を抱えている。新たな治療のブレークスルーには、病態に依存したAMD個別化医療の開発が鍵となる。本研究では、個人の生体反応に大きく関与するとされる腸内細菌叢を次世代シーケンサーで網羅的に解析し、さらに遺伝子変異や酸化ストレスとの相互作用を検討することで加齢黄斑変性の患者層別化に重要なバイオマーカーの同定と創薬ターゲットの探索を行う。

Outline of Final Research Achievements

Age-related macular degeneration (AMD) is an important ocular disease that is one of the leading causes of blindness in adults. In this study, we investigated the relationship of blood oxidative stress marker (i.e., oxidative stress level (dROM) and antioxidant capacity (BAP)) with exudative AMD (wAMD) using a free radical analyzer. The results showed that dROM was significantly higher in the wAMD group (P<0.01). Next, we extracted DNA from the feces of the wAMD patients, then, performed 16s rRNA sequence. The results showed significant changes in the composition of the phylum Bacteroidetes and Verrucomicrobia in wAMD. This study suggests that oxidative stress and changes in the gut microbiota are associated with the pathogenesis of wAMD.

Academic Significance and Societal Importance of the Research Achievements

加齢黄斑変性(AMD)は失明原因として頻度が高い疾患であり、超高齢社会を迎える本邦において、特に対策が必要な疾患である。滲出型の加齢黄斑変性(wAMD)は高額な薬剤の継続治療が必要になることが多く、病態解明と新たな治療の確立が必要である。本研究の結果から、酸化ストレスや腸内細菌叢の変化がwAMDの病態に関連することが示唆された。この成果は、将来的にwAMDの個別化予防医療に貢献する可能性がある。

Report

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

    (11 results)

All 2020

All Journal Article (5 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results)

  • [Journal Article] Carotid artery intima-media thickness, HDL cholesterol levels, and gender associated with poor visual acuity in patients with branch retinal artery occlusion2020

    • Author(s)
      Yasuda Masayuki、Sato Hajime、Hashimoto Kazuki、Osada Urara、Hariya Takehiro、Nakayama Hiroko、Asano Toshifumi、Suzuki Noriyuki、Okabe Tatsu、Yamazaki Mai、Uematsu Megumi、Munakata Masanori、Nakazawa Toru
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 10 Pages: 1-14

    • DOI

      10.1371/journal.pone.0240977

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Ocular microcirculation changes, measured with laser speckle flowgraphy and optical coherence tomography angiography, in branch retinal vein occlusion with macular edema treated by ranibizumab2020

    • Author(s)
      Asano Toshifumi、Kunikata Hiroshi、Yasuda Masayuki、Nishiguchi Koji M.、Abe Toshiaki、Nakazawa Toru
    • Journal Title

      International Ophthalmology

      Volume: 41 Issue: 1 Pages: 151-162

    • DOI

      10.1007/s10792-020-01562-7

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Vascular resistance of carotid and vertebral arteries is associated with retinal microcirculation measured by laser speckle flowgraphy in patients with type 2 diabetes mellitus2020

    • Author(s)
      Sawada Shojiro、Tsuchiya Satoko、Kodama Shinjiro、Kurosawa Satoko、Endo Akira、Sugawara Hiroto、Hosaka Shinichiro、Kawana Yohei、Asai Yoichiro、Yamamoto Junpei、Munakata Yuichiro、Izumi Tomohito、Takahashi Kei、Kaneko Keizo、Imai Junta、Ito Azusa、Yasuda Masayuki、Kunikata Hiroshi、Nakazawa Toru、Katagiri Hideki
    • Journal Title

      Diabetes Research and Clinical Practice

      Volume: 165 Pages: 108240-108240

    • DOI

      10.1016/j.diabres.2020.108240

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] RETINAL SENSITIVITY AND VESSEL DENSITY AFTER MACULAR HOLE SURGERY WITH THE SUPERIOR INVERTED INTERNAL LIMITING MEMBRANE FLAP TECHNIQUE2020

    • Author(s)
      Kunikata Hiroshi、Yasuda Masayuki、Aizawa Naoko、Osada Urara、Nishiguchi Koji M.、Abe Toshiaki、Nakazawa Toru
    • Journal Title

      Retina

      Volume: 41 Issue: 1 Pages: 45-53

    • DOI

      10.1097/iae.0000000000002839

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Association of retinal vessel density with retinal sensitivity in surgery for idiopathic epiretinal membrane2020

    • Author(s)
      Osada Urara、Kunikata Hiroshi、Yasuda Masayuki、Hashimoto Kazuki、Nishiguchi Koji M.、Nakazawa Toru
    • Journal Title

      Graefe's Archive for Clinical and Experimental Ophthalmology

      Volume: 258 Issue: 9 Pages: 1911-1920

    • DOI

      10.1007/s00417-020-04754-0

    • Related Report
      2020 Annual Research Report
  • [Presentation] 滲出型加齢黄斑変性における酸化ストレスの評価2020

    • Author(s)
      安田 正幸, 國方 彦志, 内田恵子, 浅野俊文, 橋本 和軌, 中澤 徹
    • Organizer
      日本臨床眼科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 糖尿病における体成分組成と眼血流の関連2020

    • Author(s)
      安田正幸、國方彦志、伊藤梓、澤田正二郎、児玉慎二郎、黒澤聡子、土屋暁子、片桐秀樹、中澤徹
    • Organizer
      日本網膜硝子体学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 糖尿病網膜症患者における黄斑部血管密度と頸動脈内膜中膜複合体厚の関連2020

    • Author(s)
      伊藤 梓, 國方 彦志, 澤田 正二郎, 安田 正幸, 児玉 慎二郎, 黒澤 聡子, 土屋 暁子, 片桐 秀樹, 中澤 徹
    • Organizer
      日本網膜硝子体学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 乳頭周囲網脈絡膜萎縮部血流と緑内障視野障害進行の関連2020

    • Author(s)
      清田直樹, 志賀由己浩, 高橋成奈, 安田正幸, 面高宗子, 津田聡, 國方彦志, 中澤徹
    • Organizer
      日本眼科学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Flammer症候群問診スコアと寒冷負荷試験に対する血管応答の関連2020

    • Author(s)
      清田 直樹, 志賀 由己浩, 安田 正幸, 相澤 奈帆子, 面高 宗子, 津田 聡, 國方 彦志, 中澤 徹
    • Organizer
      日本眼科学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 滲出型加齢黄斑変性における酸化ストレスの評価2020

    • Author(s)
      安田正幸
    • Organizer
      第124回日本眼科学会総会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2022-01-27  

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