Metabolites alterations in the medial prefrontal cortex of methamphetamine users in abstinence: A 1H MRS study

Qiuxia Wu, Chang Qi, Jiang Long, Yanhui Liao, Xuyi Wang, An Xie, Jianbin Liu, Wei Hao, Yiyuan Tang, Baozhu Yang, Tieqiao Liu, Jinsong Tang

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3 Scopus citations

Abstract

Background: The medial prefrontal cortex (mPFC) contains various neurotransmitter systems and plays an important role in drug use. Broad body of literature on how methamphetamine (MA) affects the structure and metabolism in the animal's mPFC is emerging, while the effects on metabolites of mPFC among human is still unclear. In this study, proton magnetic resonance spectroscopy (1H MRS) was used to measure metabolites of mPFC in methamphetamine dependent subjects. Methods: Sixty-one subjects with a history of MA dependence (fulfiled the Diagnostic and Statistical Manual of Mental Disorders, fourth edition criteria) and 65 drug-naïve control subjects (age19-45) completed 1H MRS scans using 3.0T Siemens MRI scanner. Single voxel spectra were acquired from the mPFC bilaterally using a point resolved spectroscopy sequence (PRESS). The 1H MRS data were automatically fit with linear combination model for quantification of metabolite levels of n-acetyl-aspartate (NAA), myo-inositol (mI), glycerophosphocholine plus phosphocholine(GPC+PC), phosphocreatine plus creatine (PCr+Cr), and glutamate (Glu). Metabolite levels were reported as ratios to PCr+Cr. Results: The MA group showed a significant reduction in NAA/PCr+Cr ratio and elevation in Glu/PCr+Cr ratio and mI/PCr+Cr ratio, compared with healthy control. No significant correlation was found between metabolite ratios and MA use variables. Conclusions: MA use is associated with a significant increased Glu/PCr+Cr ratio, mI/PCr+Cr ratio and reduced NAA/PCr+Cr ratio in the mPFC of MA dependence subjects. These findings suggest that Glu may play a key role in MA induced neurotoxicity.

Original languageEnglish
Article number478
JournalFrontiers in Psychiatry
Volume9
Issue numberOCT
DOIs
StatePublished - Oct 15 2018

Keywords

  • Glu/PCR+Cr
  • H MRS
  • MI/PCR+Cr
  • MPF
  • Methamphetamine
  • NAA/PCR+Cr

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    Wu, Q., Qi, C., Long, J., Liao, Y., Wang, X., Xie, A., Liu, J., Hao, W., Tang, Y., Yang, B., Liu, T., & Tang, J. (2018). Metabolites alterations in the medial prefrontal cortex of methamphetamine users in abstinence: A 1H MRS study. Frontiers in Psychiatry, 9(OCT), [478]. https://doi.org/10.3389/fpsyt.2018.00478