| Project/Area Number |
20591033
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Neurology
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| Research Institution | Nippon Medical School |
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Principal Investigator |
MISHINA Masahiro Nippon Medical School, 医学部, 講師 (70322518)
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| Co-Investigator(Kenkyū-buntansha) |
鈴木 正彦 東京慈恵会医科大学, 医学部, 講師 (20266638)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 神経機能画像学 / パーキンソン病 / PET / アデノシン受容体 / ジスキネジア / 抗パーキンソン病薬 / 副作用 / 被殻 / アデノシンA1受容体 / アデノシンA2A受容体 / 睡眠発作 / ドパミン / アデノシンA_1受容体 / アデノシンA_<2A>受容体 |
|---|
| Research Abstract |
Adenosine A^<2A> receptors (A2ARs) are thought to interact negatively with the dopamine D_2 receptor (D2R). We developed PET ligands for mapping adenosine receptors, and we successfully visualized A2ARs with ^<11>C-TMSX. In this study, we investigated A2ARs in the striata of drug-naive PD patients and PD patients with dyskinesia using ^<11>C-TMSX PET. Our study demonstrated that the A2ARs in the putamen were increased in the PD patients with dyskinesia, and also suggested that the A2ARs in the putamen compensate for the asymmetrical decrease of dopamine in drug-naive PD patients and that antiparkinsonian therapy increases the A2ARs in the putamen. The A2ARs may play an important role in regulation of parkinsonism in PD.
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