Cited by 41Obsessive-Compulsive Spectrum DisordersNeurotransmitter Receptor Influence on BehaviorSchizophrenia research and treatment

Phasic dysfunction of dopamine transmission in Tourette's syndrome evaluated with 99mTc TRODAT-1 imaging

Yeh, Chin-Bin, Lee, Chung-Shian, Ma, Kuo-Hsing, Lee, Meei-Shyuan, Chang, Chia-Jung, Huang, Wen-Sheng·2007·Psychiatry Research: Neuroimaging

Abstract

This study investigated the complex dysregulation of the dopaminergic neurotransmitter system in Tourette's syndrome (TS) patients challenged with methylphenidate (MPH). Eight drug-naïve male patients (aged 21-25 years) who met DSM-IV criteria for TS and had a mean disease severity of 25 on the Yale Global Tic Severity Scale were recruited. Brain (99m)TC TRODAT-1 dopamine transporter (DAT) single photon emission computed tomography (SPECT) was performed 5 days before, and 2 h after 10 mg of orally administered MPH. Eight age-matched healthy males served as controls. Repeated measures analysis of variance was used to measure differences in DAT-binding ratios before and after MPH challenge between the TS patients and controls. The DAT-binding ratios decreased significantly after MPH treatment in both groups. However, a significant interaction between group and MPH effects was found only in the right caudate, which was mainly due to a smaller decline of the DAT-binding ratio after MPH in the TS group than in the controls. Such a distinction was not found in the other striatal sub-regions in the two groups. No correlation, however, was observed between the tic severity score and DAT-binding ratio measured from the whole striatum or its sub-regions. The observed change in the DAT-binding ratio might indicate a functional abnormality of the dopaminergic system in the right caudate nucleus of TS patients. Future studies exploring dopamine transmission are thus needed to understand the pathophysiology of TS.

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Crossref · 10.1016/j.pscychresns.2007.01.003

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Authors
Yeh, C.-B., Lee, C.-S., Ma, K.-H., Lee, M.-S., Chang, C.-J., & Huang, W.-S.
Affiliations
  • Tri-Service General Hospital (TW)
  • Chi Mei Medical Center (TW)
  • National Defense Medical Center (TW)
Corresponding author
Huang, Wen-Sheng
Venue
Psychiatry Research: Neuroimaging
Publisher
Elsevier BV
Published
2007-10
Volume
156
Issue
1
Pages
75-82
ISSN
0925-4927 (ISSN-L)
OpenAlex
W2064263607
Cited by
41
References
53
Citations by year
2023: 1 · 2022: 2 · 2020: 2 · 2019: 2 · 2018: 4 · 2017: 1 · 2016: 1 · 2015: 3 · 2014: 3 · 2013: 3 · 2012: 8
FWCI
2.54
Type
journal article
Language
en
Open access
closed
Locations
  • Psychiatry Research Neuroimaging (publishedVersion)
  • PubMed (publishedVersion)
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 › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
Tourette syndrome, dopamine transporter, 99mTc-TRODAT-1, dopamine signaling, caudate nucleus, striatum, tic severity, dopamine transporter binding
MeSH terms
Adult, Central Nervous System Stimulants, Brain, Caudate Nucleus, Dopamine, Tourette Syndrome, Humans, Male, Methylphenidate, Putamen, Tropanes, Organotechnetium Compounds, Tomography, Emission-Computed, Single-Photon, Radiopharmaceuticals

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