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A strategic research to establish blood biomarker for cerebral amyloid angiopathy and disease modifying therapy in dementia.

Research Project

Project/Area Number 19H03572
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 52020:Neurology-related
Research InstitutionMie University

Principal Investigator

Tomimoto Hidekazu  三重大学, 医学系研究科, 特定教授 (80324648)

Co-Investigator(Kenkyū-buntansha) 及川 伸二  三重大学, 医学系研究科, 准教授 (10277006)
新堂 晃大  三重大学, 医学部附属病院, 准教授 (60422820)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2021: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2019: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Keywordsアルツハイマー病 / アミロイド血管症 / アミロイドβ / グリンパティック / 血管周囲腔
Outline of Research at the Start

アミロイドβ(Aβ)はアルツハイマー病(Alzheimer’s disease; AD)の原因タンパク質であり、その代謝には微小血管を介したクリアランス(IPADおよびGlymphatic系)の関与が示唆されている。脳アミロイド血管症 (cerebral amyloid angiopathy;CAA) は微小血管におけるAβ排泄機能の低下を反映しAD剖検脳の約90%で認められる。本研究では1)CAAの末梢血バイオマーカーの確立、2)CAA剖検脳における脳内炎症とAβ排泄機能の障害機序の解明、3)CAAモデルマウスでAβ排泄機能を改善しAD/CAAを根治する治療法の開発を行う。

Outline of Final Research Achievements

Cerebral amyloid angiopathy (CAA) is an accompanying condition of Alzheimer’s disease (AD). Amyloid β(Aβ), a peptide responsible for AD pathogenesis, is transported outside the brain via the intracerebral capillaries, and therefore, accumulation of Aβin the capillaries may hamper Aβclearance and cause adverse side effect when anti Aβ antibody increase degraded Aβin disease modifying therapy. In the present study, the blood samples of CAA patients exhibited an increase of complement protein as compared to the patients of AD without CAA and normal controls, Moreover, in autopsy brains, there coexisted complement, Apo E4, and PTX3 in the Aβ-laden capillaries, which may imply that complement-mediated inflammatory process may disturb Aβ clearance outside the brain.

Academic Significance and Societal Importance of the Research Achievements

脳アミロイド血管症はアルツハイマー病(AD)の8割以上の患者で認められる。脳アミロイド血管症の目立つAD患者は、抗アミロイドβ抗体による副作用(アミロイド関連画像異常)が生じやすいことが示唆されている。本研究では脳アミロイド血管症の末梢血バイオマーカーをし、高危険確立群の抽出に有効である可能性を示した。さらに、毛細血管へのアポE、補体、PTX3などの炎症関連の沈着が生じることでアミロイドβの脳外へのクリアランスが障害される可能性が示された。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (14 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (8 results) (of which Invited: 7 results)

  • [Journal Article] Cerebral Microbleeds With Atrial Fibrillation After Ablation Therapy2022

    • Author(s)
      Hirata Yoshinori、Kato Natsuko、Muraga Kanako、Shindo Akihiro、Nakamura Naoko、Matsuura Keita、Ii Yuichiro、Shiga Mariko、Tabei Ken-ichi、Satoh Masayuki、Fukuma Tomoyuki、Kagawa Yoshihiko、Fujita Satoshi、Kogue Ryota、Umino Maki、Maeda Masayuki、Sakuma Hajime、Dohi Kaoru、Tomimoto Hidekazu
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: 16 Pages: 818288-818288

    • DOI

      10.3389/fncel.2022.818288

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Brain magnetic resonance imaging and cognitive alterations after ablation in patients with atrial fibrillation2021

    • Author(s)
      Kato Natsuko、Muraga Kanako、Hirata Yoshinori、Shindo Akihiro、Matsuura Keita、Ii Yuichiro、Shiga Mariko、Tabei Ken-ichi、Satoh Masayuki、Fujita Satoshi、Fukuma Tomoyuki、Kagawa Yoshihiko、Fujii Eitaro、Umino Maki、Maeda Masayuki、Sakuma Hajime、Ito Masaaki、Tomimoto Hidekazu
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 18995-18995

    • DOI

      10.1038/s41598-021-98484-w

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Micro-MRI improves the accuracy of clinical diagnosis in cerebral small vessel disease2021

    • Author(s)
      Ishikawa H, Niwa A, Kato S, Ii Y,Shindo A, Matsuura K, Nishiguchi Y, Tamura A, Taniguchi A, Maeda M, Hashizume Y, Tomimoto H
    • Journal Title

      Brain Communications

      Volume: -

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chronic cerebral hypoperfusion activates AIM2 and NLRP3 inflammasome2020

    • Author(s)
      Matsuyama Hirofumi、Shindo Akihiro、Shimada Takuya、Yata Kenichiro、Wakita Hideaki、Takahashi Ryosuke、Tomimoto Hidekazu
    • Journal Title

      Brain Research

      Volume: 1736 Pages: 146779-146779

    • DOI

      10.1016/j.brainres.2020.146779

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cortical Microinfarcts Detected by 3-Tesla Magnetic Resonance Imaging2020

    • Author(s)
      Ishikawa Hidehiro、Ii Yuichiro、Shindo Akihiro、Tabei Ken-ichi、Umino Maki、Ito Ai Ogawa、Matsuura Keita、Taniguchi Akira、Matsuyama Hirofumi、Niwa Atsushi、Ogura Toru、Yoshimaru Kimiko、Satoh Masayuki、Maeda Masayuki、Tomimoto Hidekazu
    • Journal Title

      Stroke

      Volume: 51 Issue: 3 Pages: 1010-1013

    • DOI

      10.1161/strokeaha.119.028202

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Chronic cerebral hypoperfusion upregulates leptin receptor expression in astrocytes and tau phosphorylation in tau transgenic mice.2019

    • Author(s)
      Shimada T, Shindo A, Matsuyama H, Yata K, Niwa A, Sasaki R, Ayaki T, Maki T, Wakita H, Tomimoto H.
    • Journal Title

      Neuroscience Letters

      Volume: 704 Pages: 133-140

    • DOI

      10.1016/j.neulet.2019.04.009

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 脳小血管病の病態、治療、研究2021

    • Author(s)
      冨本秀和
    • Organizer
      第62回 日本神経病理学会総会学術研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Serum protein biomarkers in the diagnosis of cerebral amyloid angiopathy (CAA).2021

    • Author(s)
      Nishiguchi Y, Tachibana K, Mori Y, Matsuyama H, Shindo A, Oikawa S,Tomimoto H.
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 脳アミロイド血管症2021

    • Author(s)
      冨本秀和
    • Organizer
      第46回日本脳卒中学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 血管性認知症2021

    • Author(s)
      新堂晃大
    • Organizer
      第46回日本脳卒中学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 脳アミロイド血管症と頭蓋内出血リスク2020

    • Author(s)
      冨本秀和
    • Organizer
      第45回日本脳卒中学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 血管性認知症と脳アミロイド血管症2020

    • Author(s)
      新堂晃大
    • Organizer
      第45回日本脳卒中学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 認知症早期発見のためのバイオマーカー開発の近況2019

    • Author(s)
      冨本秀和
    • Organizer
      第37回日本神経治療学会学術集会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] アルツハイマー病の血管危険因子:脳小血管病変2019

    • Author(s)
      新堂晃大
    • Organizer
      第38回日本認知症学会学術集会
    • Related Report
      2019 Annual Research Report
    • Invited

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Published: 2019-04-18   Modified: 2023-01-30  

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