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Yang Y, Zhang L, Guo D, Zhang L, Yu H, Liu Q, Su X, Shao M, Song M, Zhang Y, Ding M, Lu Y, Liu B, Li W, Yue W, Fan X, Yang G, Lv L. Association of DTNBP1 With Schizophrenia: Findings From Two Independent Samples of Han Chinese Population. Front Psychiatry 2020; 11:446. [PMID: 32581860 PMCID: PMC7286384 DOI: 10.3389/fpsyt.2020.00446] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 05/04/2020] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Schizophrenia (SZ) is a complex psychiatric disorder that has a strong genetic basis. Dystrobrevin-binding protein 1 (DTNBP1) is one of the genes thought to be pivotal in regulating the glutamatergic system. Studies have suggested that variations in DTNBP1 confer susceptibility to SZ and clinical symptoms. Here, we performed a two-stage independent verification study to identify polymorphisms of the DTNBP1 gene that might be associated with SZ in the Han Chinese population. METHODS In stage 1, 14 single nucleotide polymorphisms (SNPs) were genotyped in 528 paranoid SZ patients and 528 healthy controls (HCs) using the Illumina GoldenGate assays on a BeadStation 500G Genotyping System. In stage 2, ten SNPs were genotyped in an independent sample of 1,031 SZ patients and 621 HCs using the Illumina 660k Genotyping System. Clinical symptoms were assessed using the Positive and Negative Syndrome Scale. RESULTS There was a significant association related to allele frequency, and a trend association in relation to genotype between SZ patients and HCs at rs4712253 (p = 0.03 and 0.05, respectively). These associations were not evident following Bonferroni correction (p > 0.05 for both). Haplotype association analysis revealed that only two haplotypes (GAG and GAA; rs16876575-rs9464793-rs4712253) were significantly different between SZ patients and HCs (χ2 = 4.24, 6.37, p = 0.04 and 0.01, respectively). In addition, in SZ patients there was a significant association in the rs4964793 genotype for positive symptoms, and in the rs1011313 genotype for excitement/hostility symptoms (p = 0.01 and 0.002, respectively). We found a significant association in the baseline symbol digital modalities test (SDMT), forward-digital span (DS), backward-DS, and semantic fluency between SZ patients and HCs (p < 0.05 for all). Finally, the SNP rs1011313 genotypes were associated with SDMT in SZ patients (p = 0.04). CONCLUSION This study provides further evidence that SNP rs4712253 of DTNBP1 has a nominal association with SZ in the Han Chinese population. Such a genotype variation may play a role in psychopathology and cognitive function.
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Affiliation(s)
- Yongfeng Yang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Luwen Zhang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Dong Guo
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Lin Zhang
- Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Hongyan Yu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China
| | - Qing Liu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Xi Su
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Minglong Shao
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Men Song
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Yan Zhang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Minli Ding
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China
| | - Yanli Lu
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China
| | - Bing Liu
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Wenqiang Li
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Weihua Yue
- Institute of Mental Health, Peking University, Beijing, China.,Ministry of Health Key Laboratory of Mental Health, Peking University, Beijing, China
| | - Xiaoduo Fan
- Psychiatry Department, University of Massachusetts Medical School and UMass Memorial Medical Center, Worcester, MA, United States
| | - Ge Yang
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
| | - Luxian Lv
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, China.,Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.,Psychiatry Department, Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China.,Psychiatry Department, Henan Provincial People's Hospital, Zhengzhou, China
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2
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Al Eissa MM, Sharp SI, O’ Brien NL, Fiorentino A, Bass NJ, Curtis D, McQuillin A. Genetic association and functional characterization of MCPH1 gene variation in bipolar disorder and schizophrenia. Am J Med Genet B Neuropsychiatr Genet 2019; 180:258-265. [PMID: 30859703 PMCID: PMC8005923 DOI: 10.1002/ajmg.b.32722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 12/10/2018] [Accepted: 01/08/2019] [Indexed: 12/12/2022]
Abstract
A rare microcephalin 1 gene (MCPH1) variant rs61749465A>G (p.Asp61Gly) with prior evidence for association with schizophrenia (p = 3.78 × 10-7 ) was tested for association in 2,300 bipolar disorder (BPD) participants, 1,930 SCZ participants and 1,820 normal comparison subjects. We report evidence for association of rs61749465A>G with BPD (p = 0.0009). rs61749465 is located in the N-terminal of the BRCT1 domain of MCPH1. Bioinformatic analysis predicted the Asp61Gly substitution to be damaging to MCPH1 function. A second MCPH1 BRCT1 domain variant (rs199422124C>G; p.Thr27Arg), reported to cause autosomal recessive microcephaly, was not detected in the participants tested here. We sought to characterize the functional effects of these variants on MCPH1 function. Cell count assays indicated that rs199422124 allele G had a greater impact on cell survival compared to the G allele of rs61749465. Gene expression analysis combined with gene network and pathway analysis indicated that rs61749465 allele G may impact protein translation and cell cycle control. The evidence for association between rs61749465A>G and psychosis in both BPD and SCZ warrants further replication. Likewise, the data from the functional analyses point to molecular mechanisms that may underlie the proposed MCPH1 mediated risk of psychosis and pathogenesis in autosomal recessive microcephaly require additional experimental validation.
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Affiliation(s)
- Mariam M Al Eissa
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, Rockefeller Building, 21 University Street, London WC1E 6BT, UK
| | - Sally I Sharp
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, Rockefeller Building, 21 University Street, London WC1E 6BT, UK
| | - Niamh L O’ Brien
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, Rockefeller Building, 21 University Street, London WC1E 6BT, UK
| | - Alessia Fiorentino
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, Rockefeller Building, 21 University Street, London WC1E 6BT, UK
| | - Nicholas J Bass
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, Rockefeller Building, 21 University Street, London WC1E 6BT, UK
| | - David Curtis
- UCL Genetics Institute, UCL, Darwin Building, Gower Street, London, WC1E, 6BT, UK
| | - Andrew McQuillin
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, Rockefeller Building, 21 University Street, London WC1E 6BT, UK
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Lazar NL, Neufeld RWJ, Cain DP. Contribution of nonprimate animal models in understanding the etiology of schizophrenia. J Psychiatry Neurosci 2011; 36:E5-29. [PMID: 21247514 PMCID: PMC3120891 DOI: 10.1503/jpn.100054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Schizophrenia is a severe psychiatric disorder that is characterized by positive and negative symptoms and cognitive impairments. The etiology of the disorder is complex, and it is thought to follow a multifactorial threshold model of inheritance with genetic and neurodevelop mental contributions to risk. Human studies are particularly useful in capturing the richness of the phenotype, but they are often limited to the use of correlational approaches. By assessing behavioural abnormalities in both humans and rodents, nonprimate animal models of schizophrenia provide unique insight into the etiology and mechanisms of the disorder. This review discusses the phenomenology and etiology of schizophrenia and the contribution of current nonprimate animal models with an emphasis on how research with models of neuro transmitter dysregulation, environmental risk factors, neurodevelopmental disruption and genetic risk factors can complement the literature on schizophrenia in humans.
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Affiliation(s)
- Noah L Lazar
- Department of Psychology, University of Western Ontario, London, Ont.
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4
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Fatjó-Vilas M, Papiol S, Estrada G, Bombín I, Peralta V, Rosa A, Parellada M, Miret S, Martín M, Lázaro L, Campanera S, Muñoz MJ, Lera-Miguel S, Arias B, Navarro ME, Castro-Fornieles J, Cuesta MJ, Arango C, Fañanás L. Dysbindin-1 gene contributes differentially to early- and adult-onset forms of functional psychosis. Am J Med Genet B Neuropsychiatr Genet 2011; 156B:322-33. [PMID: 21305691 DOI: 10.1002/ajmg.b.31166] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Accepted: 12/02/2010] [Indexed: 12/11/2022]
Abstract
Dysbindin-1 is a relatively ubiquitous protein in the brain which is involved in the modulation of synaptic homeostasis. The dysbindin-1 gene (DTNBP1) has been associated with schizophrenia and bipolar disorder diagnoses. However, its contribution to the severity of the clinical and neurocognitive expression of these disorders remains controversial. We aimed to explore the association between DTNBP1 and the phenotypes which are more directly linked with the underlying biology, such as age at onset and neurocognitive impairment. The present family sample comprised 894 Caucasian individuals: 268 patients affected by functional psychosis [58% with illness onset before 18 years, mean age at onset (SD): 14.71 (2.10)], 483 parents and 143 siblings. Ten DTNBP1 single nucleotide polymorphisms were genotyped in all individuals and their transmission disequilibrium was tested in relation to: (i) the risk for psychosis; (ii) patients' age at onset; and (iii) familial neurocognitive performance (including IQ estimation and executive functioning). In early-onset families a 5-marker haplotype encompassing exons 2-4 and the surrounding introns was significantly over-transmitted to cases, while in adult-onset families two haplotypes corresponding to the region between introns 4 and 7 were over-transmitted to cases. Estimated IQ was associated with the rs760666 marker in the whole sample, whereas a significant association between executive functioning and the rs2619522 marker appeared in early-onset families. Our findings confirm the role of the dysbindin-1 gene in the risk for functional psychosis and show a differential haplotypic risk pattern in families with early as opposed to adult onset in the affected offspring.
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Affiliation(s)
- Mar Fatjó-Vilas
- Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Institut de Biomedicina de la Universitat de Barcelona, Centro de Investigación Biomédica en Red de Salud Mental, Spain
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5
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Sun YH, Shen Y, Xu Q. DTNBP1 gene is associated with some symptom factors of schizophrenia in Chinese Han nationality. ACTA ACUST UNITED AC 2010; 25:85-9. [PMID: 20598229 DOI: 10.1016/s1001-9294(10)60027-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To study the association of DTNBP1 gene with some symptom factors of schizophrenia. METHODS A total of 285 unrelated schizophrenic individuals were recruited from December 2004 to January 2009 for genetic analysis, and their symptom factors were assessed based on the Positive and Negative Syndrome Scale (PANSS). The quantitative trait test was performed by the UNPHASED program (version 3.0.12) to investigate the association between scored positive and negative symptoms and the single nucleotide polymorphisms (SNPs) in DTNBP1 gene. RESULTS The quantitative trait test showed allelic association of rs909706 with the excitement symptom of schizophrenia (P<0.05, adjusted by 10,000 permutations), while the genotype C/G of rs2619539 with a negative symptom, lack of spontaneity and flow of conversation (P<0.05, adjusted by 10,000 permutations). CONCLUSION DTNBP1 variations are possibly associated with some symptoms of schizophrenia, which could partly explain the relationship between the susceptibility gene DTNBP1 and that disease.
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Affiliation(s)
- Yu-hui Sun
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100005, China
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6
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Voisey J, Swagell CD, Hughes IP, Lawford BR, Young RM, Morris CP. Analysis of HapMap tag-SNPs in dysbindin (DTNBP1) reveals evidence of consistent association with schizophrenia. Eur Psychiatry 2010; 25:314-9. [PMID: 20615671 DOI: 10.1016/j.eurpsy.2009.11.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Revised: 11/02/2009] [Accepted: 11/08/2009] [Indexed: 12/20/2022] Open
Abstract
Dystrobrevin binding protein 1 (DTNBP1), or dysbindin, is thought to be critical in regulating the glutamatergic system. While the dopamine pathway is known to be important in the aetiology of schizophrenia, it seems likely that glutamatergic dysfunction can lead to the development of schizophrenia. DTNBP1 is widely expressed in brain, levels are reduced in brains of schizophrenia patients and a DTNBP1 polymorphism has been associated with reduced brain expression. Despite numerous genetic studies no DTNBP1 polymorphism has been strongly implicated in schizophrenia aetiology. Using a haplotype block-based gene-tagging approach we genotyped 13 SNPs in DTNBP1 to investigate possible associations with DTNBP1 and schizophrenia. Four polymorphisms were found to be significantly associated with schizophrenia. The strongest association was found with an A/C SNP in intron 7 (rs9370822). Homozygotes for the C allele of rs9370822 were more than two and a half times as likely to have schizophrenia compared to controls. The other polymorphisms showed much weaker association and are less likely to be biologically significant. These results suggest that DTNBP1 is a good candidate for schizophrenia risk and rs9370822 is either functionally important or in disequilibrium with a functional SNP, although our observations should be viewed with caution until they are independently replicated.
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Affiliation(s)
- J Voisey
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
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Dick DM, Riley B, Kendler KS. Nature and nurture in neuropsychiatric genetics: where do we stand? DIALOGUES IN CLINICAL NEUROSCIENCE 2010. [PMID: 20373663 PMCID: PMC3181950 DOI: 10.31887/dcns.2010.12.1/ddick] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Both genetic and nongenetic risk factors, as well as interactions and correlations between them, are thought to contribute to the etiology of psychiatric and behavioral phenotypes. Genetic epidemiology consistently supports the involvement of genes in liability. Molecular genetic studies have been less successful in identifying liability genes, but recent progress suggests that a number of specific genes contributing to risk have been identified. Collectively, the results are complex and inconsistent, with a single common DNA variant in any gene influencing risk across human populations. Few specific genetic variants influencing risk have been unambiguously identified. Contemporary approaches, however, hold great promise to further elucidate liability genes and variants, as well as their potential inter-relationships with each other and with the environment. We will review the fields of genetic epidemiology and molecular genetics, providing examples from the literature to illustrate the key concepts emerging from this work.
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Affiliation(s)
- Danielle M Dick
- Department of Psychiatry, Virginia Institute of Psychiatric and Behavioral Genetics, Richmond 23298, USA
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Dwyer S, Carroll L, Mantripragada KK, Owen MJ, O'Donovan MC, Williams NM. Mutation screening of the DTNBP1 exonic sequence in 669 schizophrenics and 710 controls using high-resolution melting analysis. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:766-74. [PMID: 19859905 DOI: 10.1002/ajmg.b.31045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A large number of independent studies have reported evidence for association between the dysbindin gene (DTNBP1) and schizophrenia; however, specific risk alleles have been not been implicated as causal. In this study we set out to perform a comprehensive assessment of DNA variation within the exonic sequence of DTNBP1. To achieve this we optimized a high-resolution melting analysis (HRMA) protocol and applied it to screen all 11 DTNBP1 exons for DNA variants in a sample of 669 cases and 710 controls from the UK. Despite identifying seven exonic variants with a minor allele frequency (MAF) >0.01, none was significantly associated with schizophrenia (minimum P = 0.054), showing that the strong association we previously reported in this sample is not the result of association to a common functional variant located within the exonic sequence of any of the three major DTNBP1 transcripts. We also sought additional support for DTNBP1 as a susceptibility gene for schizophrenia by testing the hypothesis that rare exonic highly penetrant variants exist at the DTNBP1 locus. Our analysis failed to identify an enrichment of rare functional variants in the patients compared to the controls. Taken as a whole, this data demonstrate that if DTNBP1 is a risk gene for schizophrenia then risk is not conferred by mutations that affect the structure of the dysbindin protein.
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Affiliation(s)
- S Dwyer
- MRC Centre for Neuropsychiatric Genetics and Genomics, Department of Psychological Medicine and Neurology, Cardiff University, Cardiff, UK
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Markov V, Krug A, Krach S, Jansen A, Eggermann T, Zerres K, Stöcker T, Shah NJ, Nöthen MM, Treutlein J, Rietschel M, Kircher T. Impact of schizophrenia-risk gene dysbindin 1 on brain activation in bilateral middle frontal gyrus during a working memory task in healthy individuals. Hum Brain Mapp 2010; 31:266-75. [PMID: 19650139 DOI: 10.1002/hbm.20862] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Working memory (WM) dysfunction is a hallmark feature of schizophrenia. Functional imaging studies using WM tasks have documented both prefrontal hypo- and hyperactivation in schizophrenia. Schizophrenia is highly heritable, and it is unclear which susceptibility genes modulate WM and its neural correlates. A strong linkage between genetic variants in the dysbindin 1 gene and schizophrenia has been demonstrated. The aim of this study was to investigate the influence of the DTNBP1 schizophrenia susceptibility gene on WM and its neural correlates in healthy individuals. Fifty-seven right-handed, healthy male volunteers genotyped for DTNBP1 SNP rs1018381 status were divided in heterozygous risk-allele carriers (T/C) and homozygous noncarriers (C/C). WM was assessed by a 2-back vs. 0-back version of the Continuous Performance Test (CPT), while brain activation was measured with fMRI. DTNBP1 SNP rs1018381 carrier status was determined and correlated with WM performance and brain activation. Despite any differences in behavioral performance, risk-allele carriers exhibited significantly increased activation of the bilateral middle frontal gyrus (BA 9), a part of the dorsolateral prefrontal cortex (DLPFC), compared to noncarriers. This difference did not correlate with WM performance. The fMRI data provide evidence for an influence of genetic variation in DTNBP1 gene region tagged by SNP rs1018381 on bilateral middle frontal gyrus activation during a WM task. The increased activation in these brain areas may be a consequence of "inefficient" or compensatory DLPFC cognitive control functions.
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Affiliation(s)
- Valentin Markov
- Department of Psychiatry and Psychotherapy, Medical Faculty, RWTH Aachen University, Aachen, Germany.
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10
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Bergen SE, Fanous AH, Kuo PH, Wormley BK, O’Neill FA, Walsh D, Riley BP, Kendler KS. No association of dysbindin with symptom factors of schizophrenia in an Irish case-control sample. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:700-705. [PMID: 19760674 PMCID: PMC2859300 DOI: 10.1002/ajmg.b.31029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Robust associations between the dysbindin gene (DTNBP1) and schizophrenia have been demonstrated in many but not all samples, and evidence that this gene particularly predisposes to negative symptoms in this illness has been presented. The current study sought to replicate the previously reported negative symptom associations in an Irish case-control sample. Association between dysbindin and schizophrenia has been established in this cohort, and a factor analysis of the assessed symptoms yielded three factors, Positive, Negative, and Schneiderian. The sequential addition method was applied using UNPHASED to assess the relationship between these symptom factors and the high-risk haplotype. No associations were detected for any of the symptom factors indicating that the dysbindin risk haplotype does not predispose to a particular group of symptoms in this sample. Several possibilities, such as differing risk haplotypes, may explain this finding.
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Affiliation(s)
- Sarah E. Bergen
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia,Correspondence to: Sarah E. Bergen, Department of Human Genetics, Medical College of Virginia, Virginia Commonwealth University, Box 980126, Richmond, VA 23219.
| | - Ayman H. Fanous
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia,Washington VA Medical Center, Washington, District of Columbia,Department of Psychiatry, Georgetown University Medical Center, Washington, District of Columbia
| | - Po-Hsiu Kuo
- Department of Public Health, National Taiwan University, Taipei, Taiwan
| | - Brandon K. Wormley
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
| | | | | | - Brien P. Riley
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
| | - Kenneth S. Kendler
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia,Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
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11
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Dick DM, Riley B, Kendler KS. Nature and nurture in neuropsychiatric genetics: where do we stand? DIALOGUES IN CLINICAL NEUROSCIENCE 2010; 12:7-23. [PMID: 20373663 PMCID: PMC3181950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Both genetic and nongenetic risk factors, as well as interactions and correlations between them, are thought to contribute to the etiology of psychiatric and behavioral phenotypes. Genetic epidemiology consistently supports the involvement of genes in liability. Molecular genetic studies have been less successful in identifying liability genes, but recent progress suggests that a number of specific genes contributing to risk have been identified. Collectively, the results are complex and inconsistent, with a single common DNA variant in any gene influencing risk across human populations. Few specific genetic variants influencing risk have been unambiguously identified, Contemporary approaches, however hold great promise to further elucidate liability genes and variants, as well as their potential inter-relationships with each other and with the environment. We will review the fields of genetic epidemiology and molecular genetics, providing examples from the literature to illustrate the key concepts emerging from this work.
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Affiliation(s)
- Danielle M Dick
- Department of Psychiatry, Virginia Institute of Psychiatric and Behavioral Genetics, Richmond 23298, USA
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12
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Riley B, Kuo PH, Maher BS, Fanous AH, Sun J, Wormley B, O’Neill FA, Walsh D, Zhao Z, Kendler KS. The dystrobrevin binding protein 1 (DTNBP1) gene is associated with schizophrenia in the Irish Case Control Study of Schizophrenia (ICCSS) sample. Schizophr Res 2009; 115:245-53. [PMID: 19800201 PMCID: PMC2783814 DOI: 10.1016/j.schres.2009.09.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 09/01/2009] [Accepted: 09/07/2009] [Indexed: 10/20/2022]
Abstract
BACKGROUND DTNBP1 is associated with schizophrenia in many studies, but the associated alleles and haplotypes vary between samples. METHOD We assessed nine single nucleotide polymorphisms (SNPs) in this gene for association with schizophrenia in a new sample of 1021 cases and 626 controls from Ireland. RESULTS Four SNPs give evidence of association (0.000018<p<0.045), most strongly with the common allele at rs760761. A haplotype of the common alleles of five markers (including rs760761) and the minor allele of rs2619538 overlapping the 5' end of the DTNBP1 gene also gives evidence for association (p=0.0002). Secondary analyses showed no difference in the association signal based on sex or family history. These results are in agreement with the most consistently observed association with common alleles and common-allele haplotypes, reported in a previous study of Irish cases and controls but not in an Irish high-density family sample. Our results do not support the prior report from a Swedish sample of increased association in cases with a family history of psychotic illness. Comparison of human, chimpanzee and rhesus sequence suggest that rs760761 is a particularly variable position in the primate lineage. CONCLUSION This study provides further evidence from a large case/control sample for association of common DTNBP1 alleles and haplotypes with schizophrenia.
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Affiliation(s)
- Brien Riley
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA.
| | - Po-Hsiu Kuo
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | - Brion S. Maher
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Department of Human & Molecular Genetics, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | - Ayman H. Fanous
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA, Department of Psychiatry, Georgetown University School of Medicine, Washington DC, USA, Mental Health Service Line, Washington VA Medical Center, Washington DC, USA
| | - Jingchun Sun
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | - Brandon Wormley
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | | | | | - Zhongming Zhao
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
| | - Kenneth S. Kendler
- Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA, Department of Human & Molecular Genetics, Virginia Commonwealth University, Richmond, VA, USA, Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
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Whole genome association study in a homogenous population in Shandong peninsula of China reveals JARID2 as a susceptibility gene for schizophrenia. J Biomed Biotechnol 2009; 2009:536918. [PMID: 19884986 PMCID: PMC2768871 DOI: 10.1155/2009/536918] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 07/21/2009] [Accepted: 07/29/2009] [Indexed: 02/04/2023] Open
Abstract
DNA pooling can provide an economic and efficient way to detect susceptibility loci to complex diseases. We carried out a genome screen with 400 microsatellite markers spaced at approximately 10 cm in two DNA pools consisting of 119 schizophrenia (SZ) patients and 119 controls recruited from a homogenous population in the Chang Le area of the Shandong peninsula of China. Association of D6S289, a dinucleotide repeat polymorphism in the JARID2 gene with SZ, was found and confirmed by individual genotyping (X2 = 17.89; P = .047). In order to refine the signal, we genotyped 14 single nucleotide polymorphisms (SNPs) covering JARID2 and the neighboring gene, DNTBP1, in an extended sample of 309 cases and 309 controls from Shandong peninsula (including the samples from the pools). However, rs2235258 and rs9654600 in JARID2 showed association in allelic, genotypic and haplotypic tests with SZ patients from Chang Le area. This was not replicates in the extended sample, we conclude that JARID2 could be a susceptibility gene for SZ.
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Kircher T, Markov V, Krug A, Eggermann T, Zerres K, Nöthen MM, Skowronek MH, Rietschel M. Association of the DTNBP1 genotype with cognition and personality traits in healthy subjects. Psychol Med 2009; 39:1657-1665. [PMID: 19335929 DOI: 10.1017/s0033291709005388] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Schizophrenia is a complex disorder with a high heritability. Family members have an increased risk not only for schizophrenia per se but also for schizophrenia spectrum disorders. Impairment of neuropsychological functions found in schizophrenia patients are also frequently observed in their relatives. The dystrobrevin-binding protein 1 (DTNBP1) gene located at chromosome 6p22.3 is one of the most often replicated vulnerability genes for schizophrenia. In addition, this gene has been shown to modulate general cognitive abilities both in healthy subjects and in patients with schizophrenia. METHOD In a sample of 521 healthy subjects we investigated an association between the DTNBP1 genotype [single nucleotide polymorphism (SNP) rs1018381], personality traits [using the NEO Five-Factor Inventory (NEO-FFI) and the Schizotypal Personality Questionnaire - Brief Version (SPQ-B)] and cognitive function (estimated IQ, verbal fluency, attention, working memory and executive function). RESULTS Significantly lower scores on the SPQ-B (p=0.0005) and the Interpersonal Deficit subscale (p=0.0005) in carriers of the A-risk allele were detected. There were no differences in any of the cognitive variables between groups. CONCLUSIONS The results indicate that genetic variation of the DTNBP1 genotype might exert gene-specific modulating effects on schizophrenia endophenotypes at the population level.
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Affiliation(s)
- T Kircher
- Department of Psychiatry and Psychotherapy, Philipps-University Marburg, Germany.
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15
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DTNBP1 haplotype influences baseline assessment scores of schizophrenic in-patients. Neurosci Lett 2008; 440:150-4. [DOI: 10.1016/j.neulet.2008.05.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Revised: 04/30/2008] [Accepted: 05/14/2008] [Indexed: 02/06/2023]
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