期刊
ANNALS OF NEUROLOGY
卷 55, 期 1, 页码 125-129出版社
WILEY-LISS
DOI: 10.1002/ana.10814
关键词
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资金
- NIDA NIH HHS [DA7182] Funding Source: Medline
The dopamine D-1 receptor is considered to participate in levodopa's antiparkinsonian action and levodopa-induced dyskinesias. We examined the functional status of the D-1 receptor in brain of patients with Parkinson's disease (PD), multiple system atrophy (MSA), and progressive supranuclear palsy (PSP). Dopamine-stimulated adenylyl cyclase activity was significantly increased in putamen (+43%) and frontal cortex (+52%) in PD, normal in PSP, but decreased by 47% in putamen in MSA. The supersensitive dopamine D-1 receptors in both striatum and cerebral cortex in PD might compensate for dopamine deficiency, but could also contribute to long-term complications of levodopa therapy.
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