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Molecular genetics of schizophrenia Hiroshi Kunugi 1 1Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry Keyword: schizophrenia , susceptibility gene , association study , linkage study pp.693-702
Published Date 2006/10/10
DOI https://doi.org/10.11477/mf.1431100390
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 Genetic factors clearly play an important role in the pathogenesis of schizophrenia, which have prompted numerous molecular genetic studies such as linkage, association, and cytogenetic, studies. Despite difficulties underlying the search of schizophrenia genes, growing number of promising genes have been reported. These include dysbindin, neuregulin 1, PPP3CC, DAO, DAOA, epsin 4, RGS4, COMT, PRODH, ZDHHC8, and DISC 1. Findings of these genes from postmortem brain studies and animal studies as well as molecular genetic studies are reviewed. Since responsible variants have not yet been determined for these genes(except COMT), further studies are required to draw any conclusion as to whether and how each gene gives susceptibility to schizophrenia. Many candidate genes based on dopamine hypothesis, neurodevelopmental hypothesis, and glutamate hypothesis in the etiology of schizophrenia,h ave been tested for association with the disorder, which have given rise to potentially important findings. Genome-wide association studies will eventually determine schizophrenia susceptibility genes in the near future.


Copyright © 2006, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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