Morphology of the subgenual prefrontal cortex in pediatric bipolar disorder

Hasan A. Baloch, John P. Hatch, Rene L. Olvera, Mark Nicoletti, Sheila C. Caetano, Giovana B. Zunta-Soares, Jair C. Soares

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Objectives: The subgenual prefrontal cortex (SGPFC) is an important brain region involved in emotional regulation and reward mechanisms. Volumetric abnormalities in this region have been identified in adults with bipolar disorder but thus far not in pediatric cases. We examined the volume of this brain region in subjects with pediatric bipolar disorder (PBD) and compared them to healthy controls. Methods: Fifty one children and adolescents (mean age ± SD; 13.2 ± 2.9 y) with DSM-IV PBD and 41 (mean age ± SD; 13.7 ± 2.7 y) healthy comparison subjects (HC) underwent 1.5 T structural magnetic resonance imaging (MRI) brain scans. We traced the SGPFC manually and compared SGPFC gray matter volumes using analysis of covariance with age, gender, and intracranial volume as covariates. We also examined the relationship of family history of affective disorders and medication status to SGPFC volumes. Results: SGPFC volumes were not significantly different in PBD and HC subjects. However, exploratory analysis showed PBD subjects who had one or more first degree relatives with mood disorders (n = 33) had significantly smaller left hemisphere SGPFC compared to HC (p = 0.03 Sidak corrected). Current usage of a mood stabilizer was significantly associated with larger right SGPFC volume in PBD (F = 4.82, df = 1/41, p = 0.03). Conclusion: Subjects with PBD and a close family history of mood disorders may have smaller left SGPFC volumes than HC. Mood stabilizing medication may also impact SGPFC size and could have masked more subtle abnormalities overall.

Original languageEnglish (US)
Pages (from-to)1106-1110
Number of pages5
JournalJournal of Psychiatric Research
Volume44
Issue number15
DOIs
StatePublished - Nov 1 2010

Keywords

  • Emotional regulation
  • Mania
  • Mood stabilizers
  • Pediatric bipolar disorder
  • Structural MRI
  • Subgenual prefrontal cortex

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Biological Psychiatry

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