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Polymorphism of Serotonin Receptor Genes (5-HTR2A) and Dysbindin (DTNBP1) and Individual Components of Short-Term Verbal Memory Processes in Schizophrenia

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Associations between polymorphisms in the T102C and A-1438G loci of the 5-HTR2A and the P1763 and P1578 markers of the DTNBP1 gene with the overall productivity and individual subprocesses of shortterm verbal memory were studied in 4–5 patients with schizophrenia and 290 healthy subjects. Subjects were asked to reproduce immediately two lists of 10 words. The overall productivity of reproduction was assessed, along with the reproduction productivity of the first list (immediate memory or general attention), the effect of proactive interference, and the number of intrusions. Patients were significantly different from controls on all measures. Patients showed decreases in overall task performance productivity, in immediate memory productivity, and in the effect of proactive interference; fewer intrusions were seen. Both markers of the 5-HTR2A gene were associated with short-term memory productivity in the combined cohort: assessments were worse in T102C CC and A-1438G GG homozygotes. The P1763 marker of the DTNBP1 gene, conversely, had significant influences on the memory subprocesses reflected in the levels of interference and intrusions but had insignificant influence on overall productivity. Homozygotes for P1763G GG had the worst parameters. Overall, these data are consistent with the concept that these polymorphic genes are involved in different subprocesses of short-term memory both in normal subjects and in patients with schizophrenia.

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Authors and Affiliations

  1. Scientific Center for Mental Health, Russian Academy of Medical Sciences, Moscow, Russia

    M. V. Alfimova, M. V. Monakhov, L. I. Abramova, S. A. Golubev & V. E. Golimbet

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  1. M. V. Alfimova
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  2. M. V. Monakhov
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  3. L. I. Abramova
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  4. S. A. Golubev
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  5. V. E. Golimbet
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Correspondence to V. E. Golimbet.

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Translated from Zhurnal Nevrologii i Psikhatrii imeni S. S. Korsakova, Vol. 109, No. 7, pp. 70–75, July, 2009.

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Alfimova, M.V., Monakhov, M.V., Abramova, L.I. et al. Polymorphism of Serotonin Receptor Genes (5-HTR2A) and Dysbindin (DTNBP1) and Individual Components of Short-Term Verbal Memory Processes in Schizophrenia. Neurosci Behav Physi 40, 934–940 (2010). https://doi.org/10.1007/s11055-010-9348-7

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