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Fetal brain development and later schizophrenia.

R M Murray1, P Jones, E O'Callaghan

  • 1Department of Psychological Medicine, King's College Hospital, London, UK.

Ciba Foundation Symposium
|January 1, 1991
PubMed
Summary
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Schizophrenia is linked to brain structure changes like enlarged ventricles and reduced temporal lobe volume. Evidence suggests schizophrenia may originate from fetal or neonatal developmental issues, possibly involving neuronal migration problems.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Developmental Biology

Background:

  • Computed tomography (CT) and magnetic resonance imaging (MRI) reveal cerebral ventricular enlargement and reduced temporal lobe volumes in some schizophrenia patients.
  • Neuropathological studies corroborate these findings, noting diminished hippocampal volume and abnormal parahippocampal gyrus cell clusters.

Purpose of the Study:

  • To investigate structural brain abnormalities and epidemiological factors associated with schizophrenia.
  • To explore the potential origins of schizophrenia in early developmental stages.

Main Methods:

  • Review of computed tomography (CT) and magnetic resonance imaging (MRI) studies.
  • Analysis of neuropathological investigations.
  • Comparison of epidemiological data, including minor physical anomalies, obstetric complications, and birth season, between schizophrenic patients and controls.

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Main Results:

  • Schizophrenia patients exhibit cerebral ventricular enlargement and decreased temporal lobe, hippocampus, and parahippocampal gyrus volumes.
  • Increased prevalence of minor physical anomalies, obstetric complications, and late winter births observed in schizophrenic patients compared to controls.
  • Epidemiological and structural data suggest schizophrenia may originate during fetal or neonatal development.

Conclusions:

  • Structural brain abnormalities and epidemiological factors point to fetal or neonatal origins for a significant proportion of schizophrenia cases.
  • Aberrant neurodevelopment, potentially involving impaired neuronal migration, is a plausible mechanism underlying schizophrenia.
  • Further research is needed to elucidate the precise mechanisms of neurodevelopmental disruption in schizophrenia.