[99mTc]TRODAT-1/[123I]IBZM SPECT studies of the dopaminergic system in Tourette syndrome

Wen Juh Hwang, Wei Jen Yao, Ying Kai Fu, An Shoei Yang

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)


The good clinical effectiveness of dopamine depleter and receptor antagonists on tics suggests dopaminergic hyperactivity in Tourette syndrome (TS). In this case-control study of 10 TS patients and 15 age-matched healthy controls, we evaluated (i) presynaptic and postsynaptic striatal dopaminergic function using [99mTc]TRODAT-1/[123I]IBZM single photon emission computed tomography (SPECT) and (ii) correlations between dopamine transporter (DAT)/D2 receptor binding sites and tic severity scores. Patients 1-5 were pretreated with haloperidol and were drug free for at least 3 months before SPECT imaging. Patients 6-10 were drug-naïve. We found no significant difference in DAT and D2 receptor binding sites between TS patients and healthy controls nor any association between striatal DAT or D2 receptor binding sites and tic severity assessed using the Modified Rush Videotape Rating Scale. Our findings provided no direct evidence of abnormally available striatal DAT or dopamine D2 receptors in TS. However, functional abnormalities of the dopaminergic system, e.g., alterations in the synaptic release of endogenous dopamine, cannot be completely ruled out.

頁(從 - 到)159-166
期刊Psychiatry Research - Neuroimaging
出版狀態Published - 2008 2月 28

All Science Journal Classification (ASJC) codes

  • 神經科學(雜項)
  • 放射學、核子醫學和影像學
  • 精神病學和心理健康


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