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Pathophysiology and treatment of cognitive impairment in multiple system atrophy.

Research Project

Project/Area Number 21K07452
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52020:Neurology-related
Research InstitutionHirosaki University

Principal Investigator

MIKI YASUO  弘前大学, 医学研究科, 助教 (30709142)

Co-Investigator(Kenkyū-buntansha) 丹治 邦和  弘前大学, 医学研究科, 助教 (10271800)
若林 孝一  弘前大学, 医学研究科, 教授 (50240768)
古川 智範  弘前大学, 医学研究科, 助教 (60402369)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords多系統萎縮症 / 記憶障害 / αシヌクレイン / αシヌクレインオリゴマー / オリゴマー / 認知機能障害 / αシヌクレインoligomer / 神経細胞質内封入体
Outline of Research at the Start

多系統萎縮症(MSA)は自律神経障害、パーキンソニズム、小脳失調を三徴とする脊髄小脳変性症の一つである。さらに、MSA患者では37%が臨床上問題となる認知機能障害を呈し、臨床上問題となりうる。本研究では、発症週齢を自由に制御できる新規MSAモデルマウスを用い、MSAにおける認知機能障害の病態解明ならびに治療法の開発を目指す。

Outline of Final Research Achievements

Up to 37% of patients with (multiple system atrophy) MSA may develop cognitive impairment during the disease process. In the present study, we investigated the pathological substrate of cognitive impairment in MSA using a human α-synuclein-inducible MSA mouse model and human brains of patients with MSA. We found that an oligomeric form of α-synuclein was the culprit of cognitive dysfunction in MSA. We then looked for drug candidates to treat MSA in order to delay the progression of the disease and identified two drugs. Drug X was thought to shorten the exposure time of α-synuclein oligomers by accelerating the formation of α-synuclein aggregates. The other drug, Y, delayed the formation of α-synuclein oligomers. Intranasal administration of these drugs significantly improved cognitive impairment in our MSA mouse model. These data suggest that these drugs may be promising candidates for the treatment of MSA.

Academic Significance and Societal Importance of the Research Achievements

本研究はαシヌクレインオリゴマーがMSAにおける認知機能障害の成因であることを明らかにしたものである。さらに、MSAの認知機能障害を改善する薬剤2剤(X,Y) を同定し、特に薬剤Xは毒性の強いαシヌクレインオリゴマーの暴露時間を減らすことで神経毒性を軽減することを見出した(Tanaka et al. Brain communications 2024)。また、XとYは異常αシヌクレインが脳内に蓄積するレヴィ小体病(パーキンソン病、レヴィ小体型認知症)の治療にも応用できると考えている。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (27 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (6 results) Journal Article (12 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 12 results,  Open Access: 12 results) Presentation (9 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] University College London(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] スイス連邦工科大学ローザンヌ校(スイス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University College London(英国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] スイス連邦工科大学ローザンヌ校(スイス)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] University College London(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] スイス連邦工科大学ローザンヌ校(スイス)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Role of calpain-5 in cerebral ischemia and reperfusion injury2024

    • Author(s)
      Chukai Yusaku、Ito Ginga、Miki Yasuo、Wakabayashi Koichi、Itoh Ken、Sugano Eriko、Tomita Hiroshi、Fukuda Tomokazu、Ozaki Taku
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - General Subjects

      Volume: 1868 Issue: 1 Pages: 130506-130506

    • DOI

      10.1016/j.bbagen.2023.130506

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Association Between Orthostatic Hypotension and Dementia in Patients With Parkinson Disease and Multiple System Atrophy2023

    • Author(s)
      Ruiz Barrio Inigo、Miki Yasuo、Jaunmuktane Zane T.、Warner Thomas、De Pablo-Fernandez Eduardo
    • Journal Title

      Neurology

      Volume: 100 Issue: 10

    • DOI

      10.1212/wnl.0000000000201659

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sortilin acts as an endocytic receptor for α‐synuclein fibril2023

    • Author(s)
      Ishiyama Shun、Hasegawa Takafumi、Sugeno Naoto、Kobayashi Junpei、Yoshida Shun、Miki Yasuo、Wakabayashi Koichi、Fukuda Mitsunori、Kawata Yasushi、Nakamura Takaaki、Sato Kazuki、Ezura Michinori、Kikuchi Akio、Takeda Atsushi、Aoki Masashi
    • Journal Title

      The FASEB Journal

      Volume: 37 Issue: 7

    • DOI

      10.1096/fj.202201605rr

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development and validation of an expanded antibody toolset that captures alpha-synuclein pathological diversity in Lewy body diseases2023

    • Author(s)
      Altay Melek Firat、Kumar Senthil T.、Burtscher Johannes、Jagannath Somanath、Strand Catherine、Miki Yasuo、Parkkinen Laura、Holton Janice L.、Lashuel Hilal A.
    • Journal Title

      npj Parkinson's Disease

      Volume: 9 Issue: 1 Pages: 161-161

    • DOI

      10.1038/s41531-023-00604-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Colocalization of TDP‐43 and stress granules at the early stage of TDP‐43 aggregation in amyotrophic lateral sclerosis2023

    • Author(s)
      Mori Fumiaki、Yasui Hina、Miki Yasuo、Kon Tomoya、Arai Akira、Kurotaki Hidekachi、Tomiyama Masahiko、Wakabayashi Koichi
    • Journal Title

      Brain Pathology

      Volume: 34 Issue: 2

    • DOI

      10.1111/bpa.13215

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Is amyotrophic lateral sclerosis a prion-like disorder? A case report2023

    • Author(s)
      Miki Yasuo、Shibuya Eri、Yoshizawa Tadashi、Tomiyama Masahiko、Wakabayashi Koichi
    • Journal Title

      Neurological Sciences

      Volume: 44 Issue: 7 Pages: 2587-2589

    • DOI

      10.1007/s10072-023-06732-w

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Epigenetic age acceleration is associated with oligodendrocyte proportions in MSA and control brain tissue2023

    • Author(s)
      Murthy Megha、Shireby Gemma、Miki Yasuo、Vire Emmanuelle、Lashley Tammaryn、Warner Thomas T.、Mill Jonathan、Bettencourt Conceicao
    • Journal Title

      Neuropathology and Applied Neurobiology

      Volume: 49 Issue: 1

    • DOI

      10.1111/nan.12872

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Alzheimer's disease pathology concomitant with memory impairment in late‐onset multiple system atrophy2023

    • Author(s)
      Miki Yasuo、Bettencourt Conceicao、Jaunmuktane Zane、Holton Janice L.、Warner Thomas T.、Wakabayashi Koichi
    • Journal Title

      Neuropathology and Applied Neurobiology

      Volume: 49 Issue: 1

    • DOI

      10.1111/nan.12878

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Involvement of autophagic protein DEF8 in Lewy bodies2022

    • Author(s)
      Tanaka Makoto Timon、Miki Yasuo、Bettencourt Conceicao、Ozaki Taku、Tanji Kunikazu、Mori Fumiaki、Kakita Akiyoshi、Wakabayashi Koichi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 623 Pages: 170-175

    • DOI

      10.1016/j.bbrc.2022.07.069

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pathological substrate of memory impairment in multiple system atrophy2022

    • Author(s)
      Miki Yasuo、Tanji Kunikazu、Shinnai Kana、Tanaka Makoto T.、Altay Firat、et al.
    • Journal Title

      Neuropathology and Applied Neurobiology

      Volume: 48 Issue: 7

    • DOI

      10.1111/nan.12844

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correlation of magnetic resonance images with neuropathology of irreversible metronidazole-induced encephalopathy: an autopsy case report2022

    • Author(s)
      Miki Yasuo、Takeuchi Yuki、Murasawa Shingo、Takayasu Shinobu、Tsushima Fumiyasu、Kakeda Shingo、Mizukami Hiroki、Wakabayashi Koichi
    • Journal Title

      BMC Neurology

      Volume: 22 Issue: 1 Pages: 485-485

    • DOI

      10.1186/s12883-022-03006-4

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The clinical and neuropathological picture of adult neuronal intranuclear inclusion disease with no radiological abnormality2022

    • Author(s)
      Miki Yasuo、Kamata Kosuke、Goto Shintaro、Sakuraba Hirotake、Mori Fumiaki、Yamagata Kazufumi、Kijima Hiroshi、Fukuda Shinsaku、Wakabayashi Koichi
    • Journal Title

      Neuropathology

      Volume: - Issue: 3 Pages: 204-211

    • DOI

      10.1111/neup.12792

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 不可逆性の病変を脳梁膨大部に認めたメトロニダゾール脳症の1剖検例2023

    • Author(s)
      三木康生, 竹内祐貴, 村澤真吾, 髙安忍, 対馬史泰, 掛田伸吾, 水上浩哉, 若林孝一
    • Organizer
      第64回日本神経病理学会総会学術研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 陳旧性脳梗塞により一側の錐体路が断絶していたにも関わらずTDP-43陽性封入体の程度に左右差を認めなかった筋萎縮性側索硬化症の1剖検例2023

    • Author(s)
      三木康生, 渋谷絵里, 吉澤忠司, 冨山誠彦, 若林孝一
    • Organizer
      第64回日本神経病理学会総会学術研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] シヌクレイノパチーの病理2023

    • Author(s)
      三木康生
    • Organizer
      第64回日本神経病理学会総会学術研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Qualitative and quantitative alterations of synaptotagmin 13 in synucleinopathies2023

    • Author(s)
      Yasuo Miki, Makoto Tanaka, Shuji Shimoyama, Asa Nakahara, Akiyoshi Kakita, Koichi Wakabayashi
    • Organizer
      20th International Congress of Neuropathology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pathological substrate of memory impairment in multiple system atrophy2022

    • Author(s)
      Yasuo Miki
    • Organizer
      63rd Annual Meeting of the Japanese Society of Neurology
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Pathological substrate of memory impairment in multiple system atrophy2022

    • Author(s)
      Yasuo Miki et al.
    • Organizer
      63rd Annual Meeting of the Japanese Society of Neuropathology
    • Related Report
      2022 Research-status Report
  • [Presentation] 頭部MRIで異常所見を欠く神経核内封入体病の1剖検例2022

    • Author(s)
      三木康生, 鎌田耕輔, 後藤慎太郎, 櫻庭裕丈, 森文秋、山形和史, 鬼島宏, 福田眞作, 若林孝一
    • Organizer
      第63回日本神経病理学会総会学術研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Clinical pointers to help identify multiple system atrophy mimicking Parkinson’s disease or progressive supranuclear palsy2021

    • Author(s)
      Yasuo Miki, Eiki Tsushima, Koichi Wakabayashi, Thomas T Warner, Niall Quinn, Janice L Holton, Helen Ling
    • Organizer
      第62回日本神経病理学会総会学術研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] 交通性水頭症を呈したleptomeningeal myelomatosisの1剖検例2021

    • Author(s)
      三木康生, 鎌田耕輔, 明本由衣, 対馬史泰, 櫻庭裕丈, 山形和史, 黒瀬顕, 福田眞作, 若林孝一
    • Organizer
      第62回日本神経病理学会総会学術研究会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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