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2023 Fiscal Year Final Research Report

The analysis of prodromal symptom (RBD) using non-human primate model.

Research Project

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Project/Area Number 20K16493
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionKyoto University

Principal Investigator

Sawamura Masanori  京都大学, 医学研究科, 助教 (60852423)

Project Period (FY) 2020-04-01 – 2022-03-31
Keywordsαシヌクレイン / 伝播 / パーキンソン病 / RBD / 睡眠脳波
Outline of Final Research Achievements

REM sleep behavior disorder (RBD) has attracted attention as a marker for early diagnosis of Parkinson's disease (PD) as a prodromal symptom of PD. However, there is limited reports about RBD in primates. In this research project, we succeeded in identifying REM and non-REM by wireless EEG and EMG measurements on marmosets, and established a technique for measuring long sleep EEG in primates. Furthermore, by inoculating α-Syn aggregates into the olfactory bulb or gastrointestinal tract, we created a primate PD model in which α-Syn aggregates propagate into the brain. Moreover, we found RBD-like symptoms occurred after the inoculation.

Free Research Field

パーキンソン病

Academic Significance and Societal Importance of the Research Achievements

これまで睡眠研究は主にげっ歯類を用いて行われてきた。しかしながらげっ歯類の睡眠パターンは夜行性・多相性睡眠であり、霊長類は昼行性・単相性睡眠であることから大きく異なる。このため霊長類での睡眠研究が必要と考えられるが、これまで報告は限定的だった。本研究課題では霊長類での長期睡眠脳波測定を実現した。さらにこの睡眠測定技術を用いて、PDで注目されているRBDの再現に成功した。これらは霊長類での睡眠研究の基礎技術となり、さらにPDの早期診断や病態解明にも役立つものである。

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Published: 2025-01-30  

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