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  • Title: Prefrontal dysfunction in schizophrenia controlling for COMT Val158Met genotype and working memory performance.
    Author: Bertolino A, Caforio G, Petruzzella V, Latorre V, Rubino V, Dimalta S, Torraco A, Blasi G, Quartesan R, Mattay VS, Callicott JH, Weinberger DR, Scarabino T.
    Journal: Psychiatry Res; 2006 Oct 30; 147(2-3):221-6. PubMed ID: 16952445.
    Abstract:
    Earlier studies with functional imaging in schizophrenia have demonstrated dysfunction of the dorsolateral prefrontal cortex during working memory. Controlling for behavioral performance and for catechol-O-methyltransferase (COMT) Val158Met genotype, we here demonstrate in a functional magnetic resonance imaging paradigm that patients recruit greater neuronal resources in prefrontal cortex during working memory, suggesting that this phenotype is a core functional trait of the disease. We also replicated earlier findings that the Val allele of the COMT polymorphism is associated with greater engagement of the prefrontal cortex.
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