Hippocampal shape abnormalities of patients with childhood-onset schizophrenia and their unaffected siblings

Sarah L.M. Johnson*, Lei Wang, Kathryn I. Alpert, Deanna Greenstein, Liv Clasen, Francois Lalonde, Rachel Miller, Judith Rapoport, Nitin Gogtay

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Objective: The hippocampus has been implicated in the pathogenesis of schizophrenia, and hippocampal volume deficits have been a consistently reported abnormality, but the subregional specificity of the deficits remains unknown. The authors explored the nature and developmental trajectory of subregional shape abnormalities of the hippocampus in patients with childhood-onset schizophrenia (COS), their healthy siblings, and healthy volunteers. Method: Two hundred twenty-five anatomic brain magnetic resonance images were obtained from 103 patients with COS, 169 from their 79 healthy siblings, and 255 from 101 age- and sex-matched healthy volunteers (age range = 9-29 years). The hippocampus was segmented using FreeSurfer automated image analysis software, and hippocampal shape was evaluated by comparing subjects at more than 6,000 vertices on the left and right hippocampal surfaces. Longitudinal data were examined using mixed model regression analysis. Results: Patients with COS showed significant bilateral inward deformation in the anterior hippocampus. Healthy siblings also showed a trend for anterior inward deformation. However, the trajectory of shape change did not differ significantly between the groups. Inward deformations in the anterior hippocampus were positively related to positive symptom severity, whereas outward surface displacement was positively related to overall functioning. Conclusion: This is the first and largest longitudinal three-way analysis of subregional hippocampal shape abnormalities in patients with COS and their healthy siblings compared with healthy controls. The anterior hippocampal abnormalities in COS suggest the pathophysiologic importance of this subregion in schizophrenia. The trend level and overlapping shape abnormalities in the healthy siblings suggest a more subtle, subregionally specific neuroanatomic endophenotype.

Original languageEnglish (US)
Pages (from-to)527-536.e2
JournalJournal of the American Academy of Child and Adolescent Psychiatry
Volume52
Issue number5
DOIs
StatePublished - May 2013

Keywords

  • hippocampus
  • longitudinal
  • magnetic resonance imaging
  • neurodevelopment
  • schizophrenia

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Psychiatry and Mental health

Fingerprint Dive into the research topics of 'Hippocampal shape abnormalities of patients with childhood-onset schizophrenia and their unaffected siblings'. Together they form a unique fingerprint.

Cite this