Potential long-term effects of MDMA on the basal ganglia-thalamocortical circuit: A proton MR spectroscopy and diffusion-tensor imaging study

Hua Shan Liu, Ming Chung Chou, Hsiao Wen Chung, Nai Yu Cho, Shih Wei Chiang, Chao Ying Wang, Hung Wen Kao, Guo Shu Huang, Chen Yu Chen

研究成果: 雜誌貢獻文章同行評審

20 引文 斯高帕斯(Scopus)


Purpose: To investigate the effects of 3,4-methylenedioxymethamphetamine (MDMA, commonly known as "ecstasy") on the alterations of brain metabolites and anatomic tissue integrity related to the function of the basal ganglia-thalamocortical circuit by using proton magnetic resonance (MR) spectroscopy and diffusion-tensor MR imaging. Materials and Methods: This study was approved by a local institutional review board, and written informed consent was obtained from all subjects. Thirty-one long-term (> 1 year) MDMA users and 33 healthy subjects were enrolled. Proton MR spectroscopy from the middle frontal cortex and bilateral basal ganglia and whole-brain diffusion-tensor MR imaging were performed with a 3.0-T system. Absolute concentrations of metabolites were computed, and diffusion-tensor data were registered to the International Consortium for Brain Mapping template to facilitate voxel-based group comparison. Results: The mean myo-inositol level in the basal ganglia of MDMA users (left: 4.55 mmol/L ± 2.01 [standard deviation], right: 4.48 mmol/L ± 1.33) was significantly higher than that in control subjects (left: 3.25 mmol/L ± 1.30, right: 3.31 mmol/L ± 1.19)(P <.001). Cumulative lifetime MDMA dose showed a positive correlation with the levels of choline-containing compounds (Cho) in the right basal ganglia(r = 0.47, P =.02). MDMA users also showed a significant increase in fractional anisotropy (FA) in the bilateral thalami and significant changes in water diffusion in several regions related to the basal ganglia-thalamocortical circuit as compared with control subjects(P <.05; cluster size, >50 voxels). Conclusion: Increased myo-inositol and Cho concentrations in the basal ganglia of MDMA users are suggestive of glial response to degenerating serotonergic functions. The abnormal metabolic changes in the basal ganglia may consequently affect the inhibitory effect of the basal ganglia to the thalamus, as suggested by the increased FA in the thalamus and abnormal changes in water diffusion in the corresponding basal ganglia-thalamocortical circuit.
頁(從 - 到)531-540
出版狀態已發佈 - 8月 2011

ASJC Scopus subject areas

  • 放射學、核子醫學和影像學


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