Cited by 29Obsessive-Compulsive Spectrum DisordersNeurotransmitter Receptor Influence on BehaviorNeurological disorders and treatments

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

Hwang, Wen-Juh, Yao, Wei-Jen, Fu, Ying-Kai, Yang, An-Shoei·2008·Psychiatry Research: Neuroimaging

Abstract

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 [(99m)Tc]TRODAT-1/[(123)I]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.

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Crossref · 10.1016/j.pscychresns.2007.04.006

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Authors
Hwang, W.-J., Yao, W.-J., Fu, Y.-K., & Yang, A.-S.
Affiliations
  • National Cheng Kung University (TW)
  • Institute of Nuclear Energy Research (TW)
Corresponding author
Hwang, Wen-Juh
Venue
Psychiatry Research: Neuroimaging
Publisher
Elsevier BV
Published
2008-02
Volume
162
Issue
2
Pages
159-166
ISSN
0925-4927 (ISSN-L)
OpenAlex
W1998902316
Cited by
29
References
58
Citations by year
2026: 2 · 2020: 3 · 2019: 1 · 2018: 2 · 2017: 1 · 2016: 1 · 2015: 3 · 2014: 3 · 2013: 2 · 2012: 3
FWCI
2.96
Type
journal article
Language
en
Open access
closed
Locations
  • Psychiatry Research Neuroimaging (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Council
  • Atomic Energy Council
Topics
  • Social Sciences › Psychology › Clinical Psychology › Obsessive-Compulsive Spectrum Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
Keywords
Tourette syndrome, dopaminergic system, dopamine transporter, dopamine D2 receptor, striatum, tics, tic severity, dopamine release, haloperidol, 99mTc-TRODAT-1, [123I]IBZM
MeSH terms
Adolescent, Adult, Benzamides, Corpus Striatum, Female, Tourette Syndrome, Humans, Image Processing, Computer-Assisted, Iodine Radioisotopes, Magnetic Resonance Imaging, Male, Neurologic Examination, Pyrrolidines, Synapses, Tropanes, Organotechnetium Compounds, Tomography, Emission-Computed, Single-Photon, Receptors, Dopamine D2, Receptors, Presynaptic, Dopamine Plasma Membrane Transport Proteins

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