2023 Fiscal Year Final Research Report
The analysis of prodromal symptom (RBD) using non-human primate model.
Project/Area Number |
20K16493
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 51030:Pathophysiologic neuroscience-related
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Research Institution | Kyoto University |
Principal Investigator |
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Project Period (FY) |
2020-04-01 – 2022-03-31
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Keywords | α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.
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Free Research Field |
パーキンソン病
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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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