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Pre- and perinatal hypoxia associated with hippocampus/amygdala volume in bipolar disorder

In English

Författare

  • U. K. Haukvik
  • Thomas McNeil
  • E. H. Lange
  • I. Melle
  • A. M. Dale
  • O. A. Andreassen
  • I. Agartz

Summary, in English

Background Pre- and perinatal adversities may increase the risk for schizophrenia and bipolar disorder. Hypoxia-related obstetric complications (OCs) are associated with brain anatomical abnormalities in schizophrenia, but their association with brain anatomy variation in bipolar disorder is unknown. Method Magnetic resonance imaging brain scans, clinical examinations and data from the Medical Birth Registry of Norway were obtained for 219 adults, including 79 patients with a DSM-IV diagnosis of bipolar disorder (age 29.4 years, s.d.=11.8 years, 39% male) and 140 healthy controls (age 30.8 years, s.d.=12.0 years, 53% male). Severe hypoxia-related OCs throughout pregnancy/birth and perinatal asphyxia were each studied in relation to a priori selected brain volumes (hippocampus, lateral ventricles and amygdala, obtained with FreeSurfer), using linear regression models covarying for age, sex, medication use and intracranial volume. Multiple comparison adjustment was applied. Results Perinatal asphyxia was associated with smaller left amygdala volume (t=-2.59, p=0.012) in bipolar disorder patients, but not in healthy controls. Patients with psychotic bipolar disorder showed distinct associations between perinatal asphyxia and smaller left amygdala volume (t=-2.69, p=0.010), whereas patients with non-psychotic bipolar disorder showed smaller right hippocampal volumes related to both perinatal asphyxia (t=-2.60, p=0.015) and severe OCs (t=-3.25, p=0.003). No associations between asphyxia or severe OCs and the lateral ventricles were found. Conclusions Pre- and perinatal hypoxia-related OCs are related to brain morphometry in bipolar disorder in adulthood, with specific patterns in patients with psychotic versus non-psychotic illness.

Publiceringsår

2014

Språk

Engelska

Sidor

975-985

Publikation/Tidskrift/Serie

Psychological Medicine

Volym

44

Issue

5

Dokumenttyp

Artikel i tidskrift

Förlag

Cambridge University Press

Ämne

  • Psychiatry

Nyckelord

  • MRI
  • neurodevelopment
  • neuroimaging
  • obstetric complications
  • psychosis

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1469-8978