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Lee SY, Chen SL, Chen SH, Chu CH, Chang YH, Lin SH, Huang SY, Tzeng NS, Kuo PH, Lee IH, Yeh TL, Yang YK, Lu RB. Interaction of the DRD3 and BDNF gene variants in subtyped bipolar disorder. Prog Neuropsychopharmacol Biol Psychiatry 2012; 39:382-7. [PMID: 22877924 DOI: 10.1016/j.pnpbp.2012.07.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 07/19/2012] [Accepted: 07/25/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVES Bipolar disorder is a severe mental disorder with prominent genetic etiologic factors. Dopaminergic dysfunction has been implicated in the pathogenesis of bipolar disorder, which suggests that the dopamine D3 receptor gene (DRD3) is a strong candidate gene. The brain-derived neurotrophic factor (BDNF) gene has been implicated in the etiology of bipolar disorder. We examined the association between the BDNF Val66Met and DRD3 Ser9Gly polymorphisms with two subtypes of bipolar disorder: bipolar-I and -II. Because BDNF regulates DRD3 expression (1), we also examined possible interactions between these genes. METHODS We recruited 964 participants: 268 with bipolar-I, 436 with bipolar-II, and 260 healthy controls. The genotypes of the BDNF Val66Met and DRD3 Ser9Gly polymorphisms were determined using polymerase chain reactions plus restriction fragment length polymorphism analysis. RESULTS Logistic regression analysis showed a significant main effect for the Val/Val genotype of the BDNF Val66Met polymorphism (P=0.020), which predicted bipolar-II patients. Significant interaction effects for the BDNF Val66Met Val/Val genotype and both DRD3 Ser9Gly Ser/Ser and Ser/Gly genotypes were found only in bipolar-II patients (P=0.027 and 0.006, respectively). CONCLUSION We provide initial evidence that the BDNF Val66Met and DRD3 Ser9Gly genotypes interact only in bipolar-II disorder and that bipolar-I and bipolar-II may be genetically distinct.
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Affiliation(s)
- Sheng-Yu Lee
- Department of Psychiatry, National Cheng Kung University, Tainan, Taiwan
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Seifuddin F, Mahon PB, Judy J, Pirooznia M, Jancic D, Taylor J, Goes FS, Potash JB, Zandi PP. Meta-analysis of genetic association studies on bipolar disorder. Am J Med Genet B Neuropsychiatr Genet 2012; 159B:508-18. [PMID: 22573399 PMCID: PMC3582382 DOI: 10.1002/ajmg.b.32057] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 04/10/2012] [Indexed: 01/05/2023]
Abstract
Numerous candidate gene association studies of bipolar disorder (BP) have been carried out, but the results have been inconsistent. Individual studies are typically underpowered to detect associations with genes of small effect sizes. We conducted a meta-analysis of published candidate gene studies to evaluate the cumulative evidence. We systematically searched for all published candidate gene association studies of BP. We then carried out a random-effects meta-analysis on all polymorphisms that were reported on by three or more case-control studies. The results from meta-analyses of these genes were compared with the findings from a recent mega-analysis of eleven genome-wide association studies (GWAS) in BP performed by the Psychiatric GWAS Consortium (PGC). A total of 487 articles were included in our review. Among these, 33 polymorphisms in 18 genes were reported on by three or more case-control studies and included in the random-effects meta-analysis. Polymorphisms in BDNF, DRD4, DAOA, and TPH1, were found to be nominally significant with a P-value < 0.05. However, none of the findings were significant after correction for multiple testing. Moreover, none of these polymorphisms were nominally significant in the PGC-BP GWAS. A number of plausible candidate genes have been previously associated with BP. However, the lack of robust findings in our review of these candidate genes highlights the need for more atheoretical approaches to study the genetics of BP afforded by GWAS. The results of this meta-analysis and from other on-going genomic experiments in BP are available online at Metamoodics (http://metamoodics.igm.jhmi.edu).
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Affiliation(s)
- Fayaz Seifuddin
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Pamela Belmonte Mahon
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Jennifer Judy
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Mehdi Pirooznia
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Dubravka Jancic
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Jacob Taylor
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Fernando S. Goes
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - James B. Potash
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Peter P. Zandi
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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3
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Lee SY, Chen SL, Chen SH, Huang SY, Tzeng NS, Chang YH, Wang CL, Lee IH, Yeh TL, Yang YK, Lu RB. The COMT and DRD3 genes interacted in bipolar I but not bipolar II disorder. World J Biol Psychiatry 2011; 12:385-91. [PMID: 20698735 DOI: 10.3109/15622975.2010.505298] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES. Clarifying the association between bipolar I and bipolar II disorders at the genetic level is essential for improving our understanding of them. In this study, we evaluated the hypothesis that the dopaminergic polymorphisms are risk factors for bipolar disorders. We examined the association between the catechol-O-methyltransferase (COMT) Val158Met and dopamine D3 receptor (DRD3) Ser9Gly polymorphisms and bipolar I and II disorders, as well as possible interactions between these genes. METHODS. Seven hundred and eleven participants were recruited: 205 with bipolar I, 270 with bipolar II, and 236 healthy controls. The genotypes of the COMT Val158Met and DRD3 Ser9Gly polymorphisms were determined using polymerase chain reactions plus restriction fragment length polymorphism analysis. RESULTS. Logistic regression analyses showed a statistically significant main effect for the Met/Met genotype of the COMT Val158Met polymorphism (P=0.032) and a significant interaction effect for the Met/Met genotype of the COMT Val158Met and Ser/Ser genotypes of the DRD3 Ser9Gly polymorphism (P=0.001) predicted bipolar I patients. However, there was no association between the COMT Val158Met or DRD3 Ser9Gly and bipolar II. CONCLUSIONS. We provide initial evidence that the COMT Val158Met and DRD3 Ser9Gly genotypes interact in bipolar I and bipolar II disorders and that bipolar I and bipolar II are genetically distinct.
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Affiliation(s)
- Sheng-Yu Lee
- Department of Psychiatry, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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4
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Abstract
OBJECTIVE Despite effective pharmacological treatments for bipolar disorder, we still lack a comprehensive pathophysiological model of the illness. Recent neurobiological research has implicated a number of key brain regions and neuronal components in the behavioural and cognitive manifestations of bipolar disorder. Dopamine has previously been investigated in some depth in bipolar disorder, but of late has not been a primary focus of attention. This article examines the role of dopamine in bipolar disorder, incorporating recent advances into established models where possible. METHODS A critical evaluation of the literature was undertaken, including a review of behavioural, neurochemical, receptor, and imaging studies, as well as genetic studies focusing on dopamine receptors and related metabolic pathways. In addition, pharmacologic manipulation of the central dopaminergic pathways and comparisons with other disease states such as schizophrenia were considered, principally as a means of exploring the hypothesised models. RESULTS Multiple lines of evidence, including data from pharmacological interventions and structural and functional magnetic resonance imaging studies, suggest that the dopaminergic system may play a central role in bipolar disorder. CONCLUSION Future research into the pathophysiological mechanisms of bipolar disorder and the development of new treatments for bipolar disorder should focus on the dopaminergic system.
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Affiliation(s)
- David A Cousins
- Newcastle Magnetic Resonance Centre, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK.
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5
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Van Den Bogaert A, Del-Favero J, Van Broeckhoven C. Major affective disorders and schizophrenia: a common molecular signature? Hum Mutat 2006; 27:833-53. [PMID: 16917879 DOI: 10.1002/humu.20369] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Psychiatric disorders, including affective disorders (AD) and schizophrenia (SZ) are among the most common disabling brain diseases in Western populations and result in high costs in terms of morbidity as well as mortality. Although their etiology and pathophysiology is largely unknown, family-, twin-, and adoption studies argue for a strong genetic determination of these disorders. These studies indicate that there is between 40 and 85% heritability for these disorders but point also to the importance of environmental factors. Therefore, any research strategy aiming at the identification of genes involved in the development of AD and SZ should account for the complex nature (multifactorial) of these disorders. During the last decade, molecular genetic studies have contributed a great deal to the identification of genetic factors involved in complex disorders. Here we provide a comprehensive review of the most promising genes for AD and SZ, and the methods and approaches that were used for their identification. Also, we discuss the current knowledge and hypotheses that have been formulated regarding the effect of variations on protein functioning as well as recent observations that point to common molecular mechanisms.
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Affiliation(s)
- Ann Van Den Bogaert
- Department of Molecular Genetics, Flanders Interuniversity Institute for Biotechnology, University of Antwerp, Antwerpen, Belgium
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Freimer M, Kranzler H, Satel S, Lacobelle J, Skipsey K, Charney D, Gelernter J. No association between D3 dopamine receptor (DRD3) alleles and cocaine dependence. Addict Biol 2003; 1:281-7. [PMID: 12893467 DOI: 10.1080/1355621961000124896] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Cocaine is thought to act in the brain primarily by blocking dopamine re-uptake. The dopamine D3 receptor (genetic locus DRD3) is localized to brain regions that have been implicated in the reinforcing effects of a number of substances of abuse, including cocaine. The DRD3 coding region contains a polymorphism identifiable as a polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP). This polymorphism leads to an amino acid substitution at position 9 in the extracellular N-terminus of the D3 dopamine receptor. We examined alleles of the DRD3 gene in cocaine dependence using a genetic association strategy in samples of 62 white and 62 black cocaine-dependent individuals. Comparisons were made with local (Connecticut) control subjects for both groups, and with a larger sample of literature controls (for the white subjects) and a contrast group of schizophrenic patients (for the black subjects). No association was found between cocaine dependence and DRD3 alleles in either group (Bonferroni corrected). There was a significant difference in allele frequency between whites and blacks. These results are consistent with no role for genetic variation of the D3 dopamine receptor in susceptibility to cocaine dependence.
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Affiliation(s)
- M Freimer
- Department of Psychiatry, Yale University School of Medicine and West Haven VA Medical Center, West Haven, CT 06516, USA
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Massat I, Souery D, Del-Favero J, Van Gestel S, Serretti A, Macciardi F, Smeraldi E, Kaneva R, Adolfsson R, Nylander PO, Blackwood D, Muir W, Papadimitriou GN, Dikeos D, Oru? L, Segman RH, Ivezi? S, Aschauer H, Ackenheil M, Fuchshuber S, Dam H, Jakovljevi? M, Peltonen L, Hilger C, Hentges F, Staner L, Milanova V, Jazin E, Lerer B, Van Broeckhoven C, Mendlewicz J. Positive association of dopamine D2 receptor polymorphism with bipolar affective disorder in a European multicenter association study of affective disorders. ACTA ACUST UNITED AC 2002. [DOI: 10.1002/ajmg.10118] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cordeiro Júnior Q, Junqueira R, Vallada H. Estudo de associação entre o polimorfismo serina-9-glicina do receptor dopaminérgico D3 e esquizofrenia. ARQUIVOS DE NEURO-PSIQUIATRIA 2001. [DOI: 10.1590/s0004-282x2001000200013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Duas abordagens genético-moleculares foram realizadas para investigar a possível associação entre o polimorfismo serina-9-glicina no receptor dopaminérgico D3 e esquizofrenia. Na primeira análise, um grupo de 141 pacientes com esquizofrenia foi comparado a um grupo-controle de 189 indivíduos pareado para sexo e origem étnica. No outro estudo, foi realizada análise de 35 trios (pai e mãe não afetados e paciente com esquizofrenia). Os resultados desses estudos não apresentaram associação alélica ou genotípica estatisticamente significante com esquizofrenia. Pode-se concluir que o polimorfismo serina-9-glicina no receptor dopaminérgico D3 não é um fator de risco para desenvolver esquizofrenia na população estudada.
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Elvidge G, Jones I, McCandless F, Asherson P, Owen MJ, Craddock N. Allelic variation of a BalI polymorphism in the DRD3 gene does not influence susceptibility to bipolar disorder: results of analysis and meta-analysis. AMERICAN JOURNAL OF MEDICAL GENETICS 2001; 105:307-11. [PMID: 11378841 DOI: 10.1002/ajmg.1353] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Bipolar disorder is a major psychiatric illness that has evidence for a significant genetic contribution toward its development. In recent years, the BalI RFLP (restriction fragment length polymorphism) in the dopamine D3 receptor gene has been examined as a possible susceptibility factor for both schizophrenia and bipolar disorder. While analysis in schizophrenia has produced examples of increased homozygosity in patients, less encouraging results have been found for bipolar disorder. Recently, however, a family-based association study has found a significant excess of allele 1 and allele 1-containing genotypes in transmitted alleles to bipolar probands over nontransmitted controls. In a large bipolar case control sample (n = 454), we have been unable to replicate the family-based association study (chi-square = 0.137, P = 0.71, 1 df) or detect an effect similar to the positive homozygosity findings in schizophrenia (chi-square = 0.463, P = 0.50, 1 df). A meta-analysis of previous association studies also revealed no difference in allele distributions between bipolar patients and controls for this polymorphism in ethnically homogeneous samples (odds ratio, OR, = 1.04; P = 0.60; 95% confidence interval, CI, = 0.89-1.20). In view of this evidence, we conclude that variation at the BalI RFLP is not an important factor influencing the susceptibility to bipolar disorder. It remains possible, however, that other sequence variations within the DRD3 gene could play a role.
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Affiliation(s)
- G Elvidge
- Department of Psychiatry, University of Birmingham, Queen Elizabeth Psychiatric Hospital, Birmingham, England
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10
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Abstract
Many genetic studies have focussed on dopamine receptors and their relationship to neuropsychiatric disease. Schizophrenia, bipolar disorder, and substance abuse have been the most studied, but no conclusive linkage or association has been found. The possible influence of dopamine receptor variants on drug response has not received as much attention. While there is some evidence that polymorphisms and mutations in dopamine receptors can alter functional activity and pharmacological profiles, no conclusive data link these gene variants to drug response or disease. The lack of unequivocal findings may be related, in part, to the subtle changes in receptor pharmacology that these polymorphisms and mutations mediate. These subtle effects may be obscured by the influence of genes controlling drug metabolism and kinetics. Further insight into the pharmacogenetics of dopamine receptors may require not just more studies, but novel approaches to the study of complex genetic traits and diseases.
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MESH Headings
- Animals
- Dopamine Agents/pharmacology
- Humans
- Polymorphism, Genetic/genetics
- Receptors, Dopamine/drug effects
- Receptors, Dopamine/genetics
- Receptors, Dopamine D1/drug effects
- Receptors, Dopamine D1/genetics
- Receptors, Dopamine D2/drug effects
- Receptors, Dopamine D2/genetics
- Receptors, Dopamine D3
- Receptors, Dopamine D4
- Receptors, Dopamine D5
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Affiliation(s)
- A H Wong
- Centre for Addiction and Mental Health, 250 College Street, M5T 1R8, Toronto, ON, Canada.
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11
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Serretti A, Macciardi F, Cusin C, Lattuada E, Souery D, Lipp O, Mahieu B, Van Broeckhoven C, Blackwood D, Muir W, Aschauer HN, Heiden AM, Ackenheil M, Fuchshuber S, Raeymaekers P, Verheyen G, Kaneva R, Jablensky A, Papadimitriou GN, Dikeos DG, Stefanis CN, Smeraldi E, Mendlewicz J. Linkage of mood disorders with D2, D3 and TH genes: a multicenter study. J Affect Disord 2000; 58:51-61. [PMID: 10760558 DOI: 10.1016/s0165-0327(99)00112-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND It has been suggested that the dopaminergic system is involved in the pathophysiology of mood disorders. We conducted a multicenter study of families with mood disorders, to investigate a possible linkage with genes coding for dopamine receptor D2, dopamine receptor D3 and tyrosine hydroxylase (TH). METHODS Twenty three mood disorder pedigrees collected within the framework of the European Collaborative Project on Affective Disorders were analyzed with parametric and non-parametric linkage methods. Various potential phenotypes were considered, from a narrow (only bipolar as affected) to a broad (bipolar+major depressive+schizoaffective disorders) definition of affection status. RESULTS Parametric analyses excluded linkage for all the candidate genes, even though small positive LOD (Limit of Detection) scores were observed for TH in three families. Non-parametric analyses yielded negative results for all markers. CONCLUSION The D2 and D3 dopamine receptors were, therefore, not a major liability factor for mood disorders in our sample, whereas TH may play a role in a subgroup of patients.
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Affiliation(s)
- A Serretti
- Istituto Scientifico Ospedale San Raffaele, Department of Neuropsychiatric Sciences, University of Milan School of Medicine, Via Luigi Prinetti 29, 20127, Milan, Italy.
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12
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Abstract
OBJECTIVES To review the methodologies and findings in the genetics of bipolar disorder (BPD), and to suggest future directions for research. METHODS Reports of family, twin, adoption, linkage, association, cytogenetic, and animal model studies, and segregation analyses in English, were identified from multiple MEDLINE searches. Hand searches were carried out in bibliographies from review articles. RESULTS Family, twin, and adoption studies have provided strong evidence for a genetic etiology in BPD. Early reports of linkage of BPD to DNA markers at several chromosomal sites have not proven robust, perhaps because of the complex nature of BPD inheritance. However, linkage findings in the 1990s, on chromosomes 18, 21q, 12q, and 4p, have provided leads that are being pursued through both genetic and physical mapping. No gene has yet been definitively implicated in BPD. CONCLUSIONS Strategies for increasing the power to detect BPD genes include: (1) dividing the phenotype into genetically meaningful subtypes to decrease heterogeneity: and (2) ascertaining a very large family sample--a multicenter study now in progress will collect 700 bipolar I sibling pairs. BPD may result from several genes acting in concert so that new multilocus statistical methods could enhance the capacity to detect loci involved. Family-based association studies using a very large number of newly identified single nucleotide polymorphisms (SNPs) may allow for more efficient screening of the genome. As the Human Genome Project approaches its goal of isolating all genes by 2003, the data generated is likely to speed identification of candidate BPD genes.
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Affiliation(s)
- J B Potash
- Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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13
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Serretti A, Lattuada E, Cusin C, Lilli R, Lorenzi C, Smeraldi E. Dopamine D3 receptor gene not associated with symptomatology of major psychoses. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1096-8628(19991015)88:5<476::aid-ajmg8>3.0.co;2-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Bocchetta A, Piccardi MP, Palmas MA, Chillotti C, Oi A, Del Zompo M. Family-based association study between bipolar disorder andDRD2, DRD4, DAT, andSERT in Sardinia. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1096-8628(19991015)88:5<522::aid-ajmg16>3.0.co;2-m] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Savoye C, Laurent C, Amadeo S, Gheysen F, Leboyer M, Lejeune J, Zarifian E, Mallet J. No association between dopamine D1, D2, and D3 receptor genes and manic-depressive illness. Biol Psychiatry 1998; 44:644-7. [PMID: 9787891 DOI: 10.1016/s0006-3223(97)00441-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND The dopaminergic receptor genes are candidate genes for manic-depressive illness (MDI). To test this putative involvement we used a case-control study on samples from the native population of the northwest part of France. METHODS Fifty patients for D1 and D2, 61 patients for D3, and 86-223 controls were tested. RESULTS No significant association was found between allelic frequencies or genotype counts and MDI, even when the data were pooled with those from published studies. CONCLUSIONS Single mutations of either of the studied receptor genes are not major determinants of MDI.
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Affiliation(s)
- C Savoye
- Service de Pédopsychiatrie, C.H.R.U. Clémenceau, Caen, France
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16
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Mynett-Johnson L, Murphy V, McCormack J, Shields DC, Claffey E, Manley P, McKeon P. Evidence for an allelic association between bipolar disorder and a Na+, K+ adenosine triphosphatase alpha subunit gene (ATP1A3). Biol Psychiatry 1998; 44:47-51. [PMID: 9646882 DOI: 10.1016/s0006-3223(97)00343-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Disturbances in central nervous system Na+, K+ adenosine triphosphatase (ATPase) activity have previously been proposed as being involved in the pathophysiology of bipolar mood disorder. METHODS We have examined one particular alpha subunit of this enzyme for allelic association in a sample of 85 Irish bipolar patients and 85 matched controls. RESULTS There was evidence for an overall allelic association between the disease and a dinucleotide polymorphism within the ATP1A3 gene (p = .022). Subjects were then analyzed on the basis of a number of criteria, and the significance of the association increased when cases were divided based on the nature of the first episode. Patients who presented with a depressive episode first showed a significant association (p = .001) with this polymorphism. CONCLUSIONS The results presented here provide preliminary evidence of an association between bipolar disorder and an alpha subunit of Na+, K+ ATPase, the expression of which predominates in the brain.
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17
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Papadimitriou GN, Dikeos DG, Karadima G, Avramopoulos D, Daskalopoulou EG, Vassilopoulos D, Stefanis CN. Association between the GABAA receptor ?5 subunit gene locus (GABRA5) and bipolar affective disorder. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/(sici)1096-8628(19980207)81:1<73::aid-ajmg14>3.0.co;2-t] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Piccardi MP, Severino G, Bocchetta A, Palmas MA, Ruiu S, Del Zompo M. No evidence of association between dopamine D3 receptor gene and bipolar affective disorder. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/(sici)1096-8628(19970418)74:2<137::aid-ajmg4>3.0.co;2-r] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Souery D, Lipp O, Mahieu B, Mendelbaum K, De Martelaer V, Van Broeckhoven C, Mendlewicz J. Association study of bipolar disorder with candidate genes involved in catecholamine neurotransmission: DRD2, DRD3, DAT1, and TH genes. AMERICAN JOURNAL OF MEDICAL GENETICS 1996; 67:551-5. [PMID: 8950413 DOI: 10.1002/(sici)1096-8628(19961122)67:6<551::aid-ajmg7>3.0.co;2-k] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Despite strong evidence for genetic involvement in the etiology of affective disorders (from twin adoption and family studies), linkage and association methodologies are still exploring the nature of genetic factors in these diseases. Interesting testable hypotheses have been described, including candidate genes involved in catecholamine neurotransmission. We studied 69 bipolar patients and 69 matched controls (for age, sex, and geographical origin) for association and linkage disequilibrium with DNA markers at the following genes: the tyrosine hydroxylase gene, dopamine transporter gene, and dopamine D2 and D3 receptor genes. Association and linkage disequilibrium were excluded between bipolar affective disorder and these four candidate genes in our sample.
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Affiliation(s)
- D Souery
- Department of Psychiatry, University Clinics of Brussels, Erasme Hospital, Free University of Brussels, Belgium
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20
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Manki H, Kanba S, Muramatsu T, Higuchi S, Suzuki E, Matsushita S, Ono Y, Chiba H, Shintani F, Nakamura M, Yagi G, Asai M. Dopamine D2, D3 and D4 receptor and transporter gene polymorphisms and mood disorders. J Affect Disord 1996; 40:7-13. [PMID: 8882909 DOI: 10.1016/0165-0327(96)00035-3] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Disturbances in dopaminergic systems have been implicated in the etiology of mood disorders. Although genetic factors also play an important role, no major gene has been identified. We conducted an association study using the dopamine D2, D3 and D4 receptor, and transporter gene polymorphisms, comparing 101 mood-disorder patients (52 bipolar and 49 unipolar) and 100 controls. Our results suggest that there is a significant association between the dopamine D4 receptor gene and mood disorders, especially major depression, but no association between the other polymorphisms and mood disorders. Further investigations are needed to clarify the clinical significance of this association in the pathophysiology of mood disorders.
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Affiliation(s)
- H Manki
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
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21
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Turecki G, Alda M, Grof P, Martin R, Cavazzoni PA, Duffy A, Maciel P, Rouleau GA. No association between chromosome-18 markers and lithium-responsive affective disorders. Psychiatry Res 1996; 63:17-23. [PMID: 8832770 DOI: 10.1016/0165-1781(96)02864-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An allelic association study of excellent responders to lithium was conducted with a candidate gene (Golf, a G-protein receptor gene) and five other chromosome-18p markers. Golf is of special interest because it maps to a region of chromosome 18 where two independent groups (Berrettini et al., 1994; Stine et al., 1995) have found linkage to bipolar disorder. It has been proposed that G proteins are involved in the pathogenesis of bipolar disorder, and lithium, an effective prophylactic agent, is known to impair G-protein activation. To reduce heterogeneity--a common obstacle to genetic investigation--only patients who showed excellent response to lithium prophylaxis were studied. Fifty-five genetically unrelated excellent responders to lithium prophylaxis were compared with 94 normal subjects of similar ethnic background. The groups did not differ in either allele or genotype frequency for the tested markers. The data do not support the hypothesis that the tested loci confer a major susceptibility for affective disorders.
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Affiliation(s)
- G Turecki
- Centre for Research in Neuroscience, Montreal General Hospital, Canada
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Parsian A, Chakraverty S, Todd RD. Possible association between the dopamine D3 receptor gene and bipolar affective disorder. AMERICAN JOURNAL OF MEDICAL GENETICS 1995; 60:234-7. [PMID: 7573178 DOI: 10.1002/ajmg.1320600313] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A variety of studies have reported possible genetic associations between bipolar affective disorder and different loci using relative risk (case-control) comparisons. An alternative approach is to construct a contrast group using parental alleles which were not transmitted to an affected individual [Falk and Rubinstein, 1987: Ann Hum Genet 51:227-233]. We have used both approaches to test for possible associations between alleles of the dopamine D3 receptor gene and bipolar affective disorder. For relative risk studies, the probands of multiple incidence bipolar affective disorder families have been compared to alcoholic and psychiatrically normal contrast groups. Nontransmitted allele approaches have used bipolar affective disorder and alcoholic probands in which both parents were available for genotyping. Using the BalI restriction enzyme site polymorphism of Lannfelt et al. [1992: Psychiatr Genet 2:249-256], we have found no differences in the allele or genotype frequencies for bipolar vs. alcoholic or psychiatrically normal controls. In contrast, we have found evidence for an increased frequency of allele 1 and allele 1 containing genotypes in transmitted alleles from bipolar families.
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Affiliation(s)
- A Parsian
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USA
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Lim LC, Nöthen MM, Körner J, Rietschel M, Castle D, Hunt N, Propping P, Murray R, Gill M. No evidence of association between dopamine D4 receptor variants and bipolar affective disorder. AMERICAN JOURNAL OF MEDICAL GENETICS 1994; 54:259-63. [PMID: 7810585 DOI: 10.1002/ajmg.1320540314] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Disturbance in the dopamine neurotransmitter system has been implicated in the pathogenesis of affective disorder. In this study, we examine the possibility that functional variants of the recently cloned dopamine D4 receptor gene contribute to the genetic component of manic depression. The polymorphism, a 48 bp tandem repeat coding for part of the third cytoplasmic loop, was detected using a PCR based method. In a first sample of 57 patients and 59 controls, we found allele 7 to be in excess in the patients. In contrast, allele 3 was less frequent in patients. A second, larger sample of 90 patients and 91 controls was utilized to test these hypotheses. Data from the two samples were then pooled together for further analyses. We calculated the power of our samples, and if the frequency of 7 repeat allele obtained from sample 1 is true, i.e., 25% (28/114) for patients and 14% (16/118) for controls, then the power of the combined sample is 62% at 5% (two-tailed) significance level. However, both observations were not replicated; we therefore conclude that variations in this repeat at the DRD4 gene do not contribute to the genetic component of manic depression.
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Affiliation(s)
- L C Lim
- Genetics Section, Institute of Psychiatry, De Crespigny Park, London, England
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