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An overlapping pattern of cerebral cortical thinning is associated with both positive symptoms and aggression in schizophrenia via the ENIGMA consortium

Research output: Contribution to journalArticle

Original languageEnglish
Number of pages12
JournalPsychological Medicine
Early online date16 Oct 2019
DOIs
DateAccepted/In press - 1 Aug 2019
DateE-pub ahead of print (current) - 16 Oct 2019

Abstract

BACKGROUND: Positive symptoms are a useful predictor of aggression in schizophrenia. Although a similar pattern of abnormal brain structures related to both positive symptoms and aggression has been reported, this observation has not yet been confirmed in a single sample.

METHOD: To study the association between positive symptoms and aggression in schizophrenia on a neurobiological level, a prospective meta-analytic approach was employed to analyze harmonized structural neuroimaging data from 10 research centers worldwide. We analyzed brain MRI scans from 902 individuals with a primary diagnosis of schizophrenia and 952 healthy controls.

RESULTS: The result identified a widespread cortical thickness reduction in schizophrenia compared to their controls. Two separate meta-regression analyses revealed that a common pattern of reduced cortical gray matter thickness within the left lateral temporal lobe and right midcingulate cortex was significantly associated with both positive symptoms and aggression.

CONCLUSION: These findings suggested that positive symptoms such as formal thought disorder and auditory misperception, combined with cognitive impairments reflecting difficulties in deploying an adaptive control toward perceived threats, could escalate the likelihood of aggression in schizophrenia.

    Research areas

  • Aggression, cerebral cortical thinning, hostility, impulse control, positive symptoms, prospective meta-analysis, schizophrenia

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  • Full-text PDF (accepted author manuscript)

    Rights statement: This is the author accepted manuscript (AAM). The final published version (version of record) is available online via Cambridge University Press at https://www.cambridge.org/core/journals/psychological-medicine/article/an-overlapping-pattern-of-cerebral-cortical-thinning-is-associated-with-both-positive-symptoms-and-aggression-in-schizophrenia-via-the-enigma-consortium/2E9ECCFD889C023199128D734C9DE5D7 . Please refer to any applicable terms of use of the publisher.

    Accepted author manuscript, 584 KB, PDF document

    Embargo ends: 16/04/20

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