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Association of inner retinal thickness with prevalent dementia and brain atrophy in a general older population

Research Project

Project/Area Number 21K20972
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0906:Surgery related to the biological and sensory functions and related fields
Research InstitutionKyushu University

Principal Investigator

Ueda Emi  九州大学, 医学研究院, 助教 (30911359)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords認知症 / 網膜バイオマーカー / 網膜神経節細胞 / 光干渉断層計 / 網膜 / バイオマーカー / コホート研究
Outline of Research at the Start

現在認知症や脳萎縮の指標となる簡便で非侵襲的な検査法が求められている。近年SS-OCT(波長掃引式光干渉断層計)の開発により、網膜神経節細胞層厚が非侵襲的に数秒で測定可能となり、網膜神経節細胞層厚が認知症発症を予測し、脳萎縮を反映するバイオマーカーとなる可能性が示唆されている。本研究では、日本人の代表的なサンプル集団である福岡県久山町の疫学研究を用いて、1) 網膜神経節細胞層厚と認知症発症との関連、2) 網膜神経節細胞層厚と脳萎縮部位との関連を明らかにし、認知症における網膜バイオマーカーの有用性を検証することを目的とする。

Outline of Final Research Achievements

The present study demonstrated that lower GC-IPL thickness estimated by using SS-OCT was significantly associated with greater likelihood of the presence of dementia in a general older Japanese population. In the imaging analysis using VBM, we also found that lower GC-IPL thickness was significantly associated with the brain volumes of brain regions related to cognitive function as well as visual function (i.e., the lingual gyrus, cuneus, and thalamus). Similar significant associations were also observed between GC-IPL thickness and the brain volumes of the hippocampus, amygdala, cuneus, lingual gyrus, and thalamus in the automated segmentation analysis using FreeSurfer software, with the beta coefficient of association for the hippocampus being the largest. Our findings suggested that GC-IPL thickness might reflect specific brain regional alterations related to cognitive function and subsequent cognitive dysfunction.

Academic Significance and Societal Importance of the Research Achievements

日本人地域高齢住民においてSS-OCTで測定したGC-IPLの菲薄化は認知症と有意に関連した。また、脳画像データを用いたVBM解析では、GC-IPLの菲薄化は海馬、扁桃体、嗅内野、海馬傍回、舌状回、楔部、鳥距皮質、視床などの灰白質萎縮と有意に関連した。認知症者を除外した対象者でのVBM解析ではGC-IPL菲薄化は海馬萎縮と有意な関連を示した。一方、RNFLは認知症および認知機能に関わる脳部位に有意な関連は認めなかった。従って、SS-OCTを用いたGC-IPL測定は非侵襲的で簡便で再現性に優れており、認知症のハイリスク群を同定し、認知症における神経変性の過程を評価するよい指標となるかもしれない。

Report

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

    (1 results)

All 2022

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

  • [Journal Article] Association of Inner Retinal Thickness with Prevalent Dementia and Brain Atrophy in a General Older Population2022

    • Author(s)
      Ueda Emi、Hirabayashi Naoki、Ohara Tomoyuki、Hata Jun、Honda Takanori、Fujiwara Kohta、Furuta Yoshihiko、Shibata Mao、Hashimoto Sawako、Nakamura Shun、Nakazawa Taro、Nakao Tomohiro、Kitazono Takanari、Ninomiya Toshiharu、Sonoda Koh-Hei
    • Journal Title

      Ophthalmology Science

      Volume: 2 Issue: 2 Pages: 100157-100157

    • DOI

      10.1016/j.xops.2022.100157

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2021-10-22   Modified: 2024-01-30  

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