Anterior cingulate cortex choline levels in female adolescents with unipolar versus bipolar depression: A potential new tool for diagnosis

Xian Feng Shi, Lauren N. Forrest, M. Danielle Kuykendall, Andrew P. Prescot, Young Hoon Sung, Rebekah S. Huber, Tracy L. Hellem, Eun Kee Jeong, Perry F. Renshaw, Douglas G. Kondo

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Background Delayed diagnosis in bipolar disorder (BD) due to misdiagnosis as major depressive disorder (MDD) is a significant public health concern. Thus, identification of relevant diagnostic biomarkers is a critical unmet need, particularly early in the course of illness. The anterior cingulate cortex (ACC) is thought to play an important role in mood disorder pathophysiology. Case-control studies utilizing proton-1 magnetic resonance spectroscopy ( 1H-MRS) have found increased total choline levels in several brain regions in MDD. However, there are no published 1H-MRS reports directly comparing adolescents with MDD and BD. We hypothesized that ACC choline levels would be increased in adolescents with unipolar versus bipolar depression. Methods We studied depressed adolescents with MDD (n=28; mean age 17.0±2.1 years) and BD (n=9; 17.3±3.1 years). A Siemens Verio 3-Tesla clinical MRI system was used to acquire scans, using a single-voxel PRESS sequence. The voxel (18.75 cm3) was positioned on the ACC in the midsagittal plane. To remove potential gender effects, only female adolescent participants were included. Data were analyzed using the ANOVA and post-hoc Tukey tests. Results A significantly increased ACC choline/creatine ratio was observed in participants with MDD (mean=0.253±0.021) compared to BD (mean=0.219±0.020) (p=0.0002). There were no significant differences in the other 1H-MRS metabolites. Limitations Cross sectional design, single gender sample, limited sample size. Conclusions The present findings suggest that ACC total choline may have the potential to serve as a diagnostic biomarker in adolescent mood disorders.

Original languageEnglish (US)
Pages (from-to)25-29
Number of pages5
JournalJournal of Affective Disorders
Volume167
DOIs
StatePublished - Oct 1 2014

All Science Journal Classification (ASJC) codes

  • Clinical Psychology
  • Psychiatry and Mental health

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