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Wolf EJ, Hawn SE, Sullivan DR, Miller MW, Sanborn V, Brown E, Neale Z, Fein-Schaffer D, Zhao X, Logue MW, Fortier CB, McGlinchey RE, Milberg WP. Neurobiological and genetic correlates of the dissociative subtype of posttraumatic stress disorder. JOURNAL OF PSYCHOPATHOLOGY AND CLINICAL SCIENCE 2023; 132:409-427. [PMID: 37023279 PMCID: PMC10286858 DOI: 10.1037/abn0000795] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Approximately 10%-30% of individuals with posttraumatic stress disorder (PTSD) exhibit a dissociative subtype of the condition defined by symptoms of depersonalization and derealization. This study examined the psychometric evidence for the dissociative subtype of PTSD in a sample of young, primarily male post-9/11-era Veterans (n = 374 at baseline and n = 163 at follow-up) and evaluated its biological correlates with respect to resting state functional connectivity (default mode network [DMN]; n = 275), brain morphology (hippocampal subfield volume and cortical thickness; n = 280), neurocognitive functioning (n = 337), and genetic variation (n = 193). Multivariate analyses of PTSD and dissociation items suggested a class structure was superior to dimensional and hybrid ones, with 7.5% of the sample comprising the dissociative class; this group showed stability over 1.5 years. Covarying for age, sex, and PTSD severity, linear regression models revealed that derealization/depersonalization severity was associated with: decreased DMN connectivity between bilateral posterior cingulate cortex and right isthmus (p = .015; adjusted-p [padj] = .097); increased bilateral whole hippocampal, hippocampal head, and molecular layer head volume (p = .010-.034; padj = .032-.053); worse self-monitoring (p = .018; padj = .079); and a candidate genetic variant (rs263232) in the adenylyl cyclase 8 gene (p = .026), previously associated with dissociation. Results converged on biological structures and systems implicated in sensory integration, the neural representation of spatial awareness, and stress-related spatial learning and memory, suggesting possible mechanisms underlying the dissociative subtype of PTSD. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
- Erika J. Wolf
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
| | - Sage E. Hawn
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
| | - Danielle R. Sullivan
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
| | - Mark W. Miller
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
| | - Victoria Sanborn
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
| | - Emma Brown
- Translational Research Center for TBI and Stress Disorders and Geriatric Research Educational and Clinical Center, VA Boston Healthcare System, Boston, MA
| | - Zoe Neale
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
| | | | - Xiang Zhao
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
| | - Mark W. Logue
- National Center for PTSD at VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Boston University School of Medicine, Boston, MA
- Department of Biostatistics, Boston University School of Public Health Boston, MA
- Biomedical Genetics, Boston University School of Medicine, Boston, MA
| | - Catherine B. Fortier
- Translational Research Center for TBI and Stress Disorders and Geriatric Research Educational and Clinical Center, VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Harvard Medical School, Boston, MA
| | - Regina E. McGlinchey
- Translational Research Center for TBI and Stress Disorders and Geriatric Research Educational and Clinical Center, VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Harvard Medical School, Boston, MA
| | - William P. Milberg
- Translational Research Center for TBI and Stress Disorders and Geriatric Research Educational and Clinical Center, VA Boston Healthcare System, Boston, MA
- Department of Psychiatry, Harvard Medical School, Boston, MA
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Chen J, Ding Q, An L, Wang H. Ca2+-stimulated adenylyl cyclases as therapeutic targets for psychiatric and neurodevelopmental disorders. Front Pharmacol 2022; 13:949384. [PMID: 36188604 PMCID: PMC9523369 DOI: 10.3389/fphar.2022.949384] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
As the main secondary messengers, cyclic AMP (cAMP) and Ca2+ trigger intracellular signal transduction cascade and, in turn, regulate many aspects of cellular function in developing and mature neurons. The group I adenylyl cyclase (ADCY, also known as AC) isoforms, including ADCY1, 3, and 8 (also known as AC1, AC3, and AC8), are stimulated by Ca2+ and thus functionally positioned to integrate cAMP and Ca2+ signaling. Emerging lines of evidence have suggested the association of the Ca2+-stimulated ADCYs with bipolar disorder, schizophrenia, major depressive disorder, post-traumatic stress disorder, and autism. In this review, we discuss the molecular and cellular features as well as the physiological functions of ADCY1, 3, and 8. We further discuss the recent therapeutic development to target the Ca2+-stimulated ADCYs for potential treatments of psychiatric and neurodevelopmental disorders.
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Lai D, Wetherill L, Bertelsen S, Carey CE, Kamarajan C, Kapoor M, Meyers JL, Anokhin AP, Bennett DA, Bucholz KK, Chang KK, De Jager PL, Dick DM, Hesselbrock V, Kramer J, Kuperman S, Nurnberger JI, Raj T, Schuckit M, Scott DM, Taylor RE, Tischfield J, Hariri AR, Edenberg HJ, Agrawal A, Bogdan R, Porjesz B, Goate AM, Foroud T. Genome-wide association studies of alcohol dependence, DSM-IV criterion count and individual criteria. GENES, BRAIN, AND BEHAVIOR 2019; 18:e12579. [PMID: 31090166 PMCID: PMC6612573 DOI: 10.1111/gbb.12579] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/19/2019] [Accepted: 05/11/2019] [Indexed: 01/04/2023]
Abstract
Genome-wide association studies (GWAS) of alcohol dependence (AD) have reliably identified variation within alcohol metabolizing genes (eg, ADH1B) but have inconsistently located other signals, which may be partially attributable to symptom heterogeneity underlying the disorder. We conducted GWAS of DSM-IV AD (primary analysis), DSM-IV AD criterion count (secondary analysis), and individual dependence criteria (tertiary analysis) among 7418 (1121 families) European American (EA) individuals from the Collaborative Study on the Genetics of Alcoholism (COGA). Trans-ancestral meta-analyses combined these results with data from 3175 (585 families) African-American (AA) individuals from COGA. In the EA GWAS, three loci were genome-wide significant: rs1229984 in ADH1B for AD criterion count (P = 4.16E-11) and Desire to cut drinking (P = 1.21E-11); rs188227250 (chromosome 8, Drinking more than intended, P = 6.72E-09); rs1912461 (chromosome 15, Time spent drinking, P = 1.77E-08). In the trans-ancestral meta-analysis, rs1229984 was associated with multiple phenotypes and two additional loci were genome-wide significant: rs61826952 (chromosome 1, DSM-IV AD, P = 8.42E-11); rs7597960 (chromosome 2, Time spent drinking, P = 1.22E-08). Associations with rs1229984 and rs18822750 were replicated in independent datasets. Polygenic risk scores derived from the EA GWAS of AD predicted AD in two EA datasets (P < .01; 0.61%-1.82% of variance). Identified novel variants (ie, rs1912461, rs61826952) were associated with differential central evoked theta power (loss - gain; P = .0037) and reward-related ventral striatum reactivity (P = .008), respectively. This study suggests that studying individual criteria may unveil new insights into the genetic etiology of AD liability.
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Affiliation(s)
- Dongbing Lai
- Department of Medical and Molecular Genetics, Indiana
University School of Medicine, Indianapolis, IN
| | - Leah Wetherill
- Department of Medical and Molecular Genetics, Indiana
University School of Medicine, Indianapolis, IN
| | - Sarah Bertelsen
- Department of Neuroscience, Icahn School of Medicine at Mt.
Sinai, New York, NY
| | - Caitlin E. Carey
- BRAIN Lab, Department of Psychological and Brain Sciences,
Washington University School of Medicine, St. Louis, MO
| | - Chella Kamarajan
- Henri Begleiter Neurodynamics Lab, Department of
Psychiatry, State University of New York, Downstate Medical Center, Brooklyn,
NY
| | - Manav Kapoor
- Department of Neuroscience, Icahn School of Medicine at Mt.
Sinai, New York, NY
| | - Jacquelyn L. Meyers
- Henri Begleiter Neurodynamics Lab, Department of
Psychiatry, State University of New York, Downstate Medical Center, Brooklyn,
NY
| | - Andrey P. Anokhin
- Department of Psychiatry, Washington University School of
Medicine, St. Louis, MO
| | - David A. Bennett
- Rush Alzheimer's Disease Center, Rush University
Medical Center, Chicago, IL
| | - Kathleen K. Bucholz
- Department of Psychiatry, Washington University School of
Medicine, St. Louis, MO
| | - Katharine K. Chang
- BRAIN Lab, Department of Psychological and Brain Sciences,
Washington University School of Medicine, St. Louis, MO
| | - Philip L. De Jager
- Departments of Neurology and Psychiatry, Brigham and
Women's Hospital, Boston, MA
| | - Danielle M. Dick
- Department of Psychology, Virginia Commonwealth University,
Richmond, VA
| | | | - John Kramer
- Department of Psychiatry, Roy Carver College of Medicine,
University of Iowa, Iowa City, IA
| | - Samuel Kuperman
- Department of Psychiatry, Roy Carver College of Medicine,
University of Iowa, Iowa City, IA
| | - John I. Nurnberger
- Department of Medical and Molecular Genetics, Indiana
University School of Medicine, Indianapolis, IN
- Department of Psychiatry, Indiana University School of
Medicine, Indianapolis, IN
| | - Towfique Raj
- Department of Neuroscience, Icahn School of Medicine at Mt.
Sinai, New York, NY
| | - Marc Schuckit
- Department of Psychiatry, University of California, San
Diego Medical School, San Diego, CA
| | - Denise M. Scott
- Departments of Pediatrics and Human Genetics, Howard
University, Washington, DC
| | | | | | - Ahmad R. Hariri
- Laboratory of NeuroGenetics, Department of Psychology and
Neuroscience, Duke University, Durham, NC, USA
| | - Howard J. Edenberg
- Department of Medical and Molecular Genetics, Indiana
University School of Medicine, Indianapolis, IN
- Department of Biochemistry and Molecular Biology, Indiana
University School of Medicine, Indianapolis, IN
| | - Arpana Agrawal
- Department of Psychiatry, Washington University School of
Medicine, St. Louis, MO
| | - Ryan Bogdan
- BRAIN Lab, Department of Psychological and Brain Sciences,
Washington University School of Medicine, St. Louis, MO
| | - Bernice Porjesz
- Henri Begleiter Neurodynamics Lab, Department of
Psychiatry, State University of New York, Downstate Medical Center, Brooklyn,
NY
| | - Alison M. Goate
- Department of Neuroscience, Icahn School of Medicine at Mt.
Sinai, New York, NY
| | - Tatiana Foroud
- Department of Medical and Molecular Genetics, Indiana
University School of Medicine, Indianapolis, IN
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Allen JD, Bishop JR. A systematic review of genome-wide association studies of antipsychotic response. Pharmacogenomics 2019; 20:291-306. [PMID: 30883267 PMCID: PMC6563266 DOI: 10.2217/pgs-2018-0163] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/07/2019] [Indexed: 12/18/2022] Open
Abstract
Clinical symptom response to antipsychotic medications is highly variable. Genome-wide association studies (GWAS) provide a 'hypothesis-free' method of interrogating the genome for biomarkers of antipsychotic response. We performed a systematic review of GWAS findings for antipsychotic efficacy or effectiveness. 14 studies met our inclusion criteria, ten of which examined antipsychotic response using quantitative rating scales to measure symptom improvement. 15 genome-wide significant loci were identified, seven of which were replicated in other antipsychotic GWAS publications: CNTNAP5, GRID2, GRM7, 8q24 (KCNK9), PCDH7, SLC1A1 and TNIK. Notably, four replicated loci are involved in glutamatergic pathways. Additional validation and evaluation of the biological significance of these markers is warranted. These markers should also be evaluated for clinical utility, especially in the context of other validated pharmacogenomic variants (e.g., CYP450 genes). These findings may generate new avenues for development of novel antipsychotic treatments.
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Affiliation(s)
- Josiah D Allen
- Department of Experimental & Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN 55455, USA
- Medigenics Consulting LLC, Minneapolis, MN 55407, USA
| | - Jeffrey R Bishop
- Department of Experimental & Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN 55455, USA
- Department of Psychiatry, University of Minnesota Medical School, Minneapolis, MN 55455, USA
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8q22.1 Microduplication Syndrome: Why the Brain Should Be Spared? A Literature Review and a Case Report. Case Rep Med 2018; 2018:3871425. [PMID: 30123278 PMCID: PMC6079567 DOI: 10.1155/2018/3871425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 04/12/2018] [Indexed: 11/20/2022] Open
Abstract
Microduplication of chromosome 8q22.1 is mainly associated to Leri's pleonosteosis syndrome phenotype, an extremely rare autosomal dominant disease encompassing the GDF6 and SDC2 genes. To date, most of the authors focus their attention only on skeletal symptoms of the disease, and they do not systematically research or describe the co-occurrence of psychiatric illnesses or mental disorders with these muscular-skeletal diseases. In this report, we provide a description of an 8-year-old girl, with a positive family history for both skeletal malformations and bipolar disorders (BD). We suggest a possible association between Leri's pleonosteosis features and psychiatric symptoms. Furthermore, our report could be added to the large amount of reports that describe the correlation between genetic regions and disease risk for both psychiatric and rheumatological disorders.
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Naß J, Efferth T. Pharmacogenetics and Pharmacotherapy of Military Personnel Suffering from Post-traumatic Stress Disorder. Curr Neuropharmacol 2018; 15:831-860. [PMID: 27834145 PMCID: PMC5652029 DOI: 10.2174/1570159x15666161111113514] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/23/2016] [Accepted: 11/08/2016] [Indexed: 12/26/2022] Open
Abstract
Background: Posttraumatic stress disorder (PTSD) is a severe problem among soldiers with combating experience difficult to treat. The pathogenesis is still not fully understood at the psychological level. Therefore, genetic research became a focus of interest. The identification of single nucleotide polymorphisms (SNPs) may help to predict, which persons are at high risk to develop PTSD as a starting point to develop novel targeted drugs for treatment. Methods: We conducted a systematic review on SNPs in genes related to PTSD pathology and development of targeted pharmacological treatment options based on PubMed database searches. We focused on clinical trials with military personnel. Results: SNPs in 22 human genes have been linked to PTSD. These genes encode proteins acting as neurotransmitters and receptors, downstream signal transducers and metabolizing enzymes. Pharmacological inhibitors may serve as drug candidates for PTSD treatment, e.g. β2 adrenoreceptor antagonists, dopamine antagonists, partial dopamine D2 receptor agonists, dopamine β hydroxylase inhibitors, fatty acid amid hydrolase antagonists, glucocorticoid receptor agonists, tropomyosin receptor kinase B agonists, selective serotonin reuptake inhibitors, catechol-O-methyltransferase inhibitors, gamma-amino butyric acid receptor agonists, glutamate receptor inhibitors, monoaminoxidase B inhibitors, N-methyl-d-aspartate receptor antagonists. Conclusion: The combination of genetic and pharmacological research may lead to novel target-based drug developments with improved specificity and efficacy to treat PTSD. Specific SNPs may be identified as reliable biomarkers to assess individual disease risk. Focusing on soldiers suffering from PTSD will not only help to improve treatment options for this specific group, but for all PTSD patients and the general population.
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Affiliation(s)
- Janine Naß
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz. Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz. Germany
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A Novel Relationship for Schizophrenia, Bipolar, and Major Depressive Disorder. Part 8: a Hint from Chromosome 8 High Density Association Screen. Mol Neurobiol 2016; 54:5868-5882. [DOI: 10.1007/s12035-016-0102-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 09/06/2016] [Indexed: 12/21/2022]
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Maestri A, Sortica VA, Tovo-Rodrigues L, Santos MC, Barbagelata L, Moraes MR, Alencar de Mello W, Gusmão L, Sousa RCM, Emanuel Batista dos Santos S. Siaα2-3Galβ1- Receptor Genetic Variants Are Associated with Influenza A(H1N1)pdm09 Severity. PLoS One 2015; 10:e0139681. [PMID: 26436774 PMCID: PMC4593567 DOI: 10.1371/journal.pone.0139681] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 09/16/2015] [Indexed: 01/30/2023] Open
Abstract
Different host genetic variants may be related to the virulence and transmissibility of pandemic Influenza A(H1N1)pdm09, influencing events such as binding of the virus to the entry receptor on the cell of infected individuals and the host immune response. In the present study, two genetic variants of the ST3GAL1 gene, which encodes the Siaα2-3Galβ1- receptor to which influenza A(H1N1)pdm09 virus binds for entry into the host cell, were investigated in an admixed Brazilian population. First, the six exons encoding the ST3GAL1 gene were sequenced in 68 patients infected with strain A(H1N1)pdm09. In a second phase of the study, the rs113350588 and rs1048479 polymorphisms identified in this sample were genotyped in a sample of 356 subjects from the northern and northeastern regions of Brazil with a diagnosis of pandemic influenza. Functional analysis of the polymorphisms was performed in silico and the influence of these variants on the severity of infection was evaluated. The results suggest that rs113350588 and rs1048479 may alter the function of ST3GAL1 either directly through splicing regulation alteration and/or indirectly through LD with SNP with regulatory function. In the study the rs113350588 and rs1048479 polymorphisms were in linkage disequilibrium in the population studied (D’ = 0.65). The GC haplotype was associated with an increased risk of death in subjects with influenza (OR = 4.632, 95% CI = 2.10;1.21). The AT haplotype was associated with an increased risk of severe disease and death (OR = 1.993, 95% CI = 1.09;3.61 and OR 4.476, 95% CI = 2.37;8.44, respectively). This study demonstrated for the first time the association of ST3GAL1 gene haplotypes on the risk of more severe disease and death in patients infected with Influenza A(H1N1)pdm09 virus.
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Affiliation(s)
- Alvino Maestri
- Laboratory of Human and Medical Genetics, Federal University of Pará, Belém, Pará, Brazil
- * E-mail:
| | | | - Luciana Tovo-Rodrigues
- Centre of Epidemiological research, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil
| | - Mirleide Cordeiro Santos
- Laboratory of Respiratory Viruses, Virology Section, Evandro Chagas Institute, Ananindeua, Pará, Brazil
| | - Luana Barbagelata
- Laboratory of Respiratory Viruses, Virology Section, Evandro Chagas Institute, Ananindeua, Pará, Brazil
| | - Milene Raiol Moraes
- Laboratory of Human and Medical Genetics, Federal University of Pará, Belém, Pará, Brazil
| | - Wyller Alencar de Mello
- Laboratory of Respiratory Viruses, Virology Section, Evandro Chagas Institute, Ananindeua, Pará, Brazil
| | - Leonor Gusmão
- Institute of Molecular Pathology and Immunology, University of Porto (IPATIMUP), Porto, Portugal
| | - Rita Catarina Medeiros Sousa
- Laboratory of Respiratory Viruses, Virology Section, Evandro Chagas Institute, Ananindeua, Pará, Brazil
- Tropical Medicine Institute, Federal University of Pará, Belém, Pará, Brazil
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Gonzalez S, Camarillo C, Rodriguez M, Ramirez M, Zavala J, Armas R, Contreras SA, Contreras J, Dassori A, Almasy L, Flores D, Jerez A, Raventós H, Ontiveros A, Nicolini H, Escamilla M. A genome-wide linkage scan of bipolar disorder in Latino families identifies susceptibility loci at 8q24 and 14q32. Am J Med Genet B Neuropsychiatr Genet 2014; 165B:479-91. [PMID: 25044503 DOI: 10.1002/ajmg.b.32251] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 05/27/2014] [Indexed: 12/14/2022]
Abstract
A genome-wide nonparametric linkage screen was performed to localize Bipolar Disorder (BP) susceptibility loci in a sample of 3757 individuals of Latino ancestry. The sample included 963 individuals with BP phenotype (704 relative pairs) from 686 families recruited from the US, Mexico, Costa Rica, and Guatemala. Non-parametric analyses were performed over a 5 cM grid with an average genetic coverage of 0.67 cM. Multipoint analyses were conducted across the genome using non-parametric Kong & Cox LOD scores along with Sall statistics for all relative pairs. Suggestive and significant genome-wide thresholds were calculated based on 1000 simulations. Single-marker association tests in the presence of linkage were performed assuming a multiplicative model with a population prevalence of 2%. We identified two genome-wide significant susceptibly loci for BP at 8q24 and 14q32, and a third suggestive locus at 2q13-q14. Within these three linkage regions, the top associated single marker (rs1847694, P = 2.40 × 10(-5)) is located 195 Kb upstream of DPP10 in Chromosome 2. DPP10 is prominently expressed in brain neuronal populations, where it has been shown to bind and regulate Kv4-mediated A-type potassium channels. Taken together, these results provide additional evidence that 8q24, 14q32, and 2q13-q14 are susceptibly loci for BP and these regions may be involved in the pathogenesis of BP in the Latino population.
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Affiliation(s)
- Suzanne Gonzalez
- Center of Excellence for Neurosciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas; Department of Psychiatry, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas
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10
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Angata T. Associations of genetic polymorphisms of Siglecs with human diseases. Glycobiology 2014; 24:785-93. [PMID: 24841380 DOI: 10.1093/glycob/cwu043] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Genetic polymorphism studies in humans provide unique opportunities to understand human biology and the mechanisms of diseases. Correlations between polymorphisms in the genes encoding human Siglecs and various diseases have been reported. Leading examples, such as the CD33 polymorphism associated with late-onset Alzheimer's disease, are well supported by genetic replication and mechanistic studies, while some others (such as SIGLEC8 polymorphism associated with bronchial asthma and SIGLEC14 polymorphism associated with exacerbation of chronic obstructive pulmonary disease) may benefit reinforcement by independent genetic replication or mechanistic studies. In a few cases, such as MAG polymorphism associated with psychological disorder and CD22 polymorphism associated with autoimmune disease, the phenotype associated with a genetic polymorphism of a Siglec gene and that of an enzyme gene involved in the biosynthesis of Siglec ligand show some overlap, providing indirect support for the observed genotype-phenotype association. Although studies using engineered mutant mice have provided invaluable insights into the biological functions and mechanisms of diseases, it is not always possible to develop appropriate mouse model to replicate human situations because of significant species-to-species differences, which can be a major obstacle in understanding the biology of some of human CD33/Siglec-3-related Siglecs. Further studies in genetic polymorphisms of human Siglecs, combined with appropriate functional studies, may reveal unexpected biological roles of human Siglecs, and identify possible targets for prevention and/or treatment of certain diseases.
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Affiliation(s)
- Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang District, Taipei 11529, Taiwan
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11
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Wolf EJ, Rasmusson AM, Mitchell KS, Logue MW, Baldwin CT, Miller MW. A genome-wide association study of clinical symptoms of dissociation in a trauma-exposed sample. Depress Anxiety 2014; 31:352-60. [PMID: 24677629 PMCID: PMC3984628 DOI: 10.1002/da.22260] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 01/23/2014] [Accepted: 02/05/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Recent work suggests that a subset of individuals with posttraumatic stress disorder (PTSD) exhibit marked dissociative symptoms, as defined by derealization and depersonalization. A dissociative subtype of PTSD was added to the diagnostic criteria listed in the Diagnostic and Statistical Manual of Mental Disorders, Version 5 (DSM-5) to capture this presentation of PTSD. This study examined genetic polymorphisms for association with the symptoms that define the dissociative subtype of PTSD using a genome-wide approach. METHODS The sample comprised 484 White, non-Hispanic, trauma-exposed veterans and their partners who were assessed for lifetime PTSD and dissociation using a structured clinical interview. The prevalence of PTSD was 60.5%. Single-nucleotide polymorphisms (SNPs) from across the genome were obtained from a 2.5 million SNP array. RESULTS Ten SNPs evidenced suggestive association with dissociation (P < 10(-5)). No SNPs met genome-wide significance criteria (P < 5 × 10(-8)). The peak SNP was rs263232 (β = 1.4, P = 6.12 × 10(-7)), located in the adenylyl cyclase 8 (ADCY8) gene; a second SNP in the suggestive range was rs71534169 (β = 1.63, P = 3.79 × 10(-6)), located in the dipeptidyl-peptidase 6 (DPP6) gene. CONCLUSIONS ADCY8 is integral for long-term potentiation and synaptic plasticity and is implicated in fear-related learning and memory and long-term memory consolidation. DPP6 is critical for synaptic integration and excitation. These genes may exert effects on basic sensory integration and cognitive processes that underlie dissociative phenomena.
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Affiliation(s)
- Erika J. Wolf
- National Center for PTSD at VA Boston Healthcare System,Department of Psychiatry, Boston University School of Medicine
| | - Ann M. Rasmusson
- National Center for PTSD at VA Boston Healthcare System,Department of Psychiatry, Boston University School of Medicine
| | - Karen S. Mitchell
- National Center for PTSD at VA Boston Healthcare System,Department of Psychiatry, Boston University School of Medicine
| | - Mark W. Logue
- Biomedical Genetics, Boston University School of Medicine,Department of Biostatistics, Boston University School of Public Health
| | | | - Mark W. Miller
- National Center for PTSD at VA Boston Healthcare System,Department of Psychiatry, Boston University School of Medicine
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12
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Imbrici P, Camerino DC, Tricarico D. Major channels involved in neuropsychiatric disorders and therapeutic perspectives. Front Genet 2013; 4:76. [PMID: 23675382 PMCID: PMC3646240 DOI: 10.3389/fgene.2013.00076] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 04/16/2013] [Indexed: 12/11/2022] Open
Abstract
Voltage-gated ion channels are important mediators of physiological functions in the central nervous system. The cyclic activation of these channels influences neurotransmitter release, neuron excitability, gene transcription, and plasticity, providing distinct brain areas with unique physiological and pharmacological response. A growing body of data has implicated ion channels in the susceptibility or pathogenesis of psychiatric diseases. Indeed, population studies support the association of polymorphisms in calcium and potassium channels with the genetic risk for bipolar disorders (BPDs) or schizophrenia. Moreover, point mutations in calcium, sodium, and potassium channel genes have been identified in some childhood developmental disorders. Finally, antibodies against potassium channel complexes occur in a series of autoimmune psychiatric diseases. Here we report recent studies assessing the role of calcium, sodium, and potassium channels in BPD, schizophrenia, and autism spectrum disorders, and briefly summarize promising pharmacological strategies targeted on ion channels for the therapy of mental illness and related genetic tests.
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Affiliation(s)
- Paola Imbrici
- Section of Pharmacology, Department of Pharmacy - Drug Science, University of Bari Bari, Italy
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Gilling M, Rasmussen HB, Calloe K, Sequeira AF, Baretto M, Oliveira G, Almeida J, Lauritsen MB, Ullmann R, Boonen SE, Brondum-Nielsen K, Kalscheuer VM, Tümer Z, Vicente AM, Schmitt N, Tommerup N. Dysfunction of the Heteromeric KV7.3/KV7.5 Potassium Channel is Associated with Autism Spectrum Disorders. Front Genet 2013; 4:54. [PMID: 23596459 PMCID: PMC3627139 DOI: 10.3389/fgene.2013.00054] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 03/25/2013] [Indexed: 12/01/2022] Open
Abstract
Heterozygous mutations in the KCNQ3 gene on chromosome 8q24 encoding the voltage-gated potassium channel KV7.3 subunit have previously been associated with rolandic epilepsy and idiopathic generalized epilepsy (IGE) including benign neonatal convulsions. We identified a de novo t(3;8) (q21;q24) translocation truncating KCNQ3 in a boy with childhood autism. In addition, we identified a c.1720C > T [p.P574S] nucleotide change in three unrelated individuals with childhood autism and no history of convulsions. This nucleotide change was previously reported in patients with rolandic epilepsy or IGE and has now been annotated as a very rare SNP (rs74582884) in dbSNP. The p.P574S KV7.3 variant significantly reduced potassium current amplitude in Xenopus laevis oocytes when co-expressed with KV7.5 but not with KV7.2 or KV7.4. The nucleotide change did not affect trafficking of heteromeric mutant KV7.3/2, KV7.3/4, or KV7.3/5 channels in HEK 293 cells or primary rat hippocampal neurons. Our results suggest that dysfunction of the heteromeric KV7.3/5 channel is implicated in the pathogenesis of some forms of autism spectrum disorders, epilepsy, and possibly other psychiatric disorders and therefore, KCNQ3 and KCNQ5 are suggested as candidate genes for these disorders.
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Affiliation(s)
- Mette Gilling
- Wilhelm Johannsen Centre for Functional Genome Research, Department of Cellular and Molecular Medicine, University of CopenhagenCopenhagen, Denmark
- Section for Neurogenetics, Department of Cellular and Molecular Medicine, University of CopenhagenCopenhagen, Denmark
| | - Hanne B. Rasmussen
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Department of Biomedical Sciences, University of CopenhagenCopenhagen, Denmark
| | - Kirstine Calloe
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Department of Biomedical Sciences, University of CopenhagenCopenhagen, Denmark
| | - Ana F. Sequeira
- Instituto Gulbenkian de CiênciaOeiras, Portugal
- Instituto Nacional de Saúde Dr. Ricardo JorgeLisbon, Portugal
| | - Marta Baretto
- Instituto Gulbenkian de CiênciaOeiras, Portugal
- Instituto Nacional de Saúde Dr. Ricardo JorgeLisbon, Portugal
| | - Guiomar Oliveira
- Centro de Desencolcimento da Criança, Centro Investigação e Formação clinica, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, Faculty of Medicine, University of CoimbraCoimbra, Portugal
| | - Joana Almeida
- Centro de Desencolcimento da Criança, Centro Investigação e Formação clinica, Hospital Pediátrico, Centro Hospitalar e Universitário de Coimbra, Faculty of Medicine, University of CoimbraCoimbra, Portugal
| | - Marlene B. Lauritsen
- Regional Centre for Child and Adolescent Psychiatry, Aarhus University HospitalAarhus, Denmark
| | | | - Susanne E. Boonen
- Kennedy Center, Copenhagen University HospitalRigshospitalet, Glostrup, Denmark
| | | | | | - Zeynep Tümer
- Wilhelm Johannsen Centre for Functional Genome Research, Department of Cellular and Molecular Medicine, University of CopenhagenCopenhagen, Denmark
- Kennedy Center, Copenhagen University HospitalRigshospitalet, Glostrup, Denmark
| | - Astrid M. Vicente
- Instituto Gulbenkian de CiênciaOeiras, Portugal
- Instituto Nacional de Saúde Dr. Ricardo JorgeLisbon, Portugal
| | - Nicole Schmitt
- Danish National Research Foundation Centre for Cardiac Arrhythmia, Department of Biomedical Sciences, University of CopenhagenCopenhagen, Denmark
| | - Niels Tommerup
- Wilhelm Johannsen Centre for Functional Genome Research, Department of Cellular and Molecular Medicine, University of CopenhagenCopenhagen, Denmark
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Xu C, Aragam N, Li X, Villla EC, Wang L, Briones D, Petty L, Posada Y, Arana TB, Cruz G, Mao C, Camarillo C, Su BB, Escamilla MA, Wang K. BCL9 and C9orf5 are associated with negative symptoms in schizophrenia: meta-analysis of two genome-wide association studies. PLoS One 2013; 8:e51674. [PMID: 23382809 PMCID: PMC3558516 DOI: 10.1371/journal.pone.0051674] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 11/05/2012] [Indexed: 11/18/2022] Open
Abstract
Schizophrenia is a chronic and debilitating psychiatric condition affecting slightly more than 1% of the population worldwide and it is a multifactorial disorder with a high degree of heritability (80%) based on family and twin studies. Increasing lines of evidence suggest intermediate phenotypes/endophenotypes are more associated with causes of the disease and are less genetically complex than the broader disease spectrum. Negative symptoms in schizophrenia are attractive intermediate phenotypes based on their clinical and treatment response features. Therefore, our objective was to identify genetic variants underlying the negative symptoms of schizophrenia by analyzing two genome-wide association (GWA) data sets consisting of a total of 1,774 European-American patients and 2,726 controls. Logistic regression analysis of negative symptoms as a binary trait (adjusted for age and sex) was performed using PLINK. For meta-analysis of two datasets, the fixed-effect model in PLINK was applied. Through meta-analysis we identified 25 single nucleotide polymorphisms (SNPs) associated with negative symptoms with p<5×10(-5). Especially we detected five SNPs in the first two genes/loci strongly associated with negative symptoms of schizophrenia (P(meta-analysis)<6.22×10(-6)), which included three SNPs in the BCL9 gene: rs583583 showed the strongest association at a P(meta-analysis) of 6.00×10(-7) and two SNPs in the C9orf5 (the top SNP is rs643410 with a p = 1.29 ×10(-6)). Through meta-analysis, we identified several additional negative symptoms associated genes (ST3GAL1, RNF144, CTNNA3 and ZNF385D). This is the first report of the common variants influencing negative symptoms of schizophrenia. These results provide direct evidence of using of negative symptoms as an intermediate phenotype to dissect the complex genetics of schizophrenia. However, additional studies are warranted to examine the underlying mechanisms of these disease-associated SNPs in these genes.
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Affiliation(s)
- Chun Xu
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | - Nagesh Aragam
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, Tennesee, United States of America
- Department of Microbiology and Immunology, Division of Infectious Diseases, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Xia Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, People’s Republic of China
| | | | - Liang Wang
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, Tennesee, United States of America
| | - David Briones
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | - Leonora Petty
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | - Yolanda Posada
- Walden University, Minneapolis, Minnesota, United States of America
| | - Tania Bedard Arana
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | - Grace Cruz
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | | | - Cynthia Camarillo
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | | | - Michael A. Escamilla
- Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, Departments of Psychiatry/Neurology and the Center of Excellence in Neuroscience, El Paso, Texas, United States of America
| | - KeSheng Wang
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, Tennesee, United States of America
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Huang H, Jeon T, Sedmak G, Pletikos M, Vasung L, Xu X, Yarowsky P, Richards LJ, Kostovic I, Sestan N, Mori S. Coupling diffusion imaging with histological and gene expression analysis to examine the dynamics of cortical areas across the fetal period of human brain development. Cereb Cortex 2012; 23:2620-31. [PMID: 22933464 DOI: 10.1093/cercor/bhs241] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
As a prominent component of the human fetal brain, the structure of the cerebral wall is characterized by its laminar organization which includes the radial glial scaffold during fetal development. Diffusion tensor imaging (DTI) is useful to quantitatively delineate the microstructure of the developing brain and to clearly identify transient fetal layers in the cerebral wall. In our study, the spatio-temporal microstructural changes in the developing human fetal cerebral wall were quantitatively characterized with high-resolution DTI data of postmortem fetal brains from 13 to 21 gestational weeks. Eleven regions of interest for each layer in the entire cerebral wall were included. Distinctive time courses of microstructural changes were revealed for 11 regions of the neocortical plate. A histological analysis was also integrated to elucidate the relationship between DTI fractional anisotropy (FA) and histology. High FA values correlated with organized radial architecture in histological image. Expression levels of 17565 genes were quantified for each of 11 regions of human fetal neocortex from 13 to 21 gestational weeks to identify transcripts showing significant correlation with FA change. These correlations suggest that the heterogeneous and regionally specific microstructural changes of the human neocortex are related to different gene expression patterns.
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Sillén A, Brohede J, Forsell C, Lilius L, Andrade J, Odeberg J, Kimura T, Winblad B, Graff C. Linkage analysis of autopsy-confirmed familial Alzheimer disease supports an Alzheimer disease locus in 8q24. Dement Geriatr Cogn Disord 2011; 31:109-18. [PMID: 21273770 DOI: 10.1159/000323808] [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] [Accepted: 12/14/2010] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND/AIMS We have previously reported the results of an extended genome-wide scan of Swedish Alzheimer disease (AD)-affected families; in this paper, we analyzed a subset of these families with autopsy-confirmed AD. METHODS We report the fine-mapping, using both microsatellite markers and single-nucleotide polymorphisms (SNPs), in the observed maximum logarithm of the odds (LOD)-2 unit (LOD(max)-2) region under the identified linkage peak, linkage analysis of the fine-mapping data with additionally analyzed pedigrees, and association analysis of SNPs selected from candidate genes in the linked interval. The subset was made on the criterion of at least one autopsy-confirmed AD case per family, resulting in 24 families. RESULTS Linkage analysis of a family subset having at least one autopsy-confirmed AD case showed a significant nonparametric single-point LOD score of 4.4 in 8q24. Fine-mapping under the linkage peak with 10 microsatellite markers yielded an increase in the multipoint (mpt) LOD score from 2.1 to 3.0. SNP genotyping was performed on 21 selected candidate transcripts of the LOD(max)-2 region. Both family-based association and linkage analysis were performed on extended material from 30 families, resulting in a suggestive linkage at peak marker rs6577853 (mpt LOD score = 2.4). CONCLUSION The 8q24 region has been implicated to be involved in AD etiology.
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Affiliation(s)
- Anna Sillén
- Karolinska Institutet, Department of Neurobiology, Care Sciences and Society, KI-ADRC, KASPAC, Novum, Sweden
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Zhang P, Xiang N, Chen Y, Œliwerska E, McInnis MG, Burmeister M, Zöllner S. Family-based association analysis to finemap bipolar linkage peak on chromosome 8q24 using 2,500 genotyped SNPs and 15,000 imputed SNPs. Bipolar Disord 2010; 12:786-92. [PMID: 21176025 PMCID: PMC3290916 DOI: 10.1111/j.1399-5618.2010.00883.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Multiple linkage and association studies have suggested chromosome 8q24 as a promising candidate region for bipolar disorder (BP). We performed a detailed association analysis assessing the contribution of common genetic variation in this region to the risk of BP. METHODS We analyzed 2,756 single nucleotide polymorphism (SNP) markers in the chromosome 8q24 region of 3,512 individuals from 737 families. In addition, we extended genotype imputation methods to family-based data and imputed 22,725 HapMap SNPs in the same region on 8q24. We applied a family-based method to test 15,552 high-quality genotyped or imputed SNPs for association with BP. RESULTS Our association analysis identified the most significant marker (p=4.80 × 10(-5) ), near the gene encoding potassium voltage-gated channel KQT-like protein (KCNQ3). Other marginally significant markers were located near adenylate cyclase 8 (ADCY8) and ST3 beta-galactoside alpha-2,3-sialyltransferase 1 (ST3GAL1). CONCLUSIONS We developed an approach to apply MACH imputation to family-based data, which can increase the power to detect association signals. Our association results showed suggestive evidence of association of BP with loci near KCNQ3, ADCY8, and ST3GAL1. Consistent with genes identified by genome-wide association studies for BP, our results suggest the involvement of ion channelopathy in BP pathogenesis. However, common variants are insufficient to explain linkage findings in 8q24; other genetic variation should be explored.
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Affiliation(s)
- Peng Zhang
- Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA, Center for Statistical Genetics, University of Michigan, Ann Arbor, MI, USA
| | - Nan Xiang
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, USA
| | - Yi Chen
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI, USA, Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA
| | - Elżbieta Œliwerska
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, USA
| | - Melvin G McInnis
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - Margit Burmeister
- Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA, Center for Statistical Genetics, University of Michigan, Ann Arbor, MI, USA, Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, USA, Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA, Department of Human Genetics, University of Michigan, Ann Arbor, MI, USA
| | - Sebastian Zöllner
- Center for Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA, Center for Statistical Genetics, University of Michigan, Ann Arbor, MI, USA, Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA, Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
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de Mooij-van Malsen AJG, van Lith HA, Oppelaar H, Hendriks J, de Wit M, Kostrzewa E, Breen G, Collier DA, Olivier B, Kas MJ. Interspecies trait genetics reveals association of Adcy8 with mouse avoidance behavior and a human mood disorder. Biol Psychiatry 2009; 66:1123-30. [PMID: 19691954 DOI: 10.1016/j.biopsych.2009.06.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 06/18/2009] [Accepted: 06/21/2009] [Indexed: 01/15/2023]
Abstract
BACKGROUND Identifying susceptibility genes for endophenotypes by studying analogous behaviors across species is an important strategy for understanding the pathophysiology underlying psychiatric disorders. This approach provides novel biological pathways plus validated animal models critical for selective drug development. One such endophenotype is avoidance behavior. METHODS In the present study, novel automated registration methods for longitudinal behavioral assessment in home cages are used to screen a panel of recently generated mouse chromosome substitution strains that are very powerful in quantitative trait loci (QTL) detection of complex traits. In this way, we identified chromosomes regulating avoidance behavior (increased sheltering preference) independent of motor activity levels (horizontal distance moved). Genetic information from the mouse QTL-interval was integrated with that from the homologous human linkage region for a mood disorder. RESULTS We genetically mapped a QTL for avoidance behavior on mouse chromosome 15, homologous with a human genome region (8q24) linked to bipolar disorder. Integrating the syntenic mouse QTL-interval with genotypes of 1868 BPD cases versus 14,311 control subjects revealed two associated genes (ADCY8 and KCNQ3). Adenylyl cyclase 8 (Adcy8) was differentially expressed in specific brain regions of mouse strains that differ in avoidance behavior levels. Finally, we showed that chronic infusion of the human mood stabilizer carbamazepine (that acts via adenylyl cyclase activity) significantly reduced mouse avoidance behavior, providing a further link between human mood disorders and this mouse home cage behavior. CONCLUSIONS Our data suggest that Adcy8 might encode a translational behavioral endophenotype of bipolar disorder.
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Affiliation(s)
- Annetrude J G de Mooij-van Malsen
- Rudolf Magnus Institute of Neuroscience, Department of Neuroscience and Pharmacology, University Medical Centre Utrecht, 3584 CG Utrecht, The Netherlands
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Zöllner S, Su G, Stewart WCL, Chen Y, McInnis MG, Burmeister M. Bayesian EM algorithm for scoring polymorphic deletions from SNP data and application to a common CNV on 8q24. Genet Epidemiol 2009; 33:357-68. [PMID: 19085946 DOI: 10.1002/gepi.20391] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Copy number variations (CNVs) in the human genome provide exciting candidates for functional polymorphisms. Hence, we now assess association between CNV carrier status and diseases status by evaluating the signal intensity of SNP genotyping assays. Here, we present a novel statistical method designed to perform such inference and apply this method to a known CNV in a bipolar disorder linkage region. Using Bayesian computations we calculate the posterior probability for carrier status of a CNV in each individual of a sample by jointly analyzing genotype information and hybridization intensity. We model the signal intensity as a mixture of normal distributions, allowing for locus-specific and allele-specific distributions. Using an expectation maximization algorithm we estimate the parameters of these distributions and use these estimates for inferring carrier status of each individual and for the boundaries of the CNV. We applied the method to a sample of 3,512 individuals to a previously described common deletion on 8q24, a region consistently showing linkage to bipolar disorder, and unambiguously inferred 172 heterozygous and 1 homozygous deletion carrier. We observed no significant association between bipolar disorder and carrier status. We carefully assessed the validity of the inferred carrier status and observed no indication of errors. Furthermore, the algorithm precisely identifies the boundaries of the CNV. Finally, we assessed the power of this algorithm to detect shorter CNVs by sub-sampling from the SNPs covered by this deletion, demonstrating that our EM algorithm produces precise estimates of carrier status.
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Affiliation(s)
- Sebastian Zöllner
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan 48109-2029, USA.
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Isokpehi RD, Lewis SA, Oyeleye TO, Ayensu WK, Gerald TM. Comorbidity of bipolar disorder with substance abuse: selection of prioritized genes for translational research. SUMMIT ON TRANSLATIONAL BIOINFORMATICS 2009; 2009:49-53. [PMID: 21347170 PMCID: PMC3041554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Bipolar disorder is a highly heritable mental illness. The global burden of bipolar disorder is complicated by its comorbidity with substance abuse. Several genome-wide linkage/association studies on bipolar disorder as well as substance abuse have focused on the identification and/or prioritization of candidate disease genes. A useful step for translational research of these identified/prioritized genes is to identify sets of genes that have particular kinds of publicly available data. Therefore, we have leveraged the availability of links to related resources in the Entrez Gene database to develop a web-based resource for selecting genes based on presence or absence in particular biological data resources. The utility of our approach is demonstrated using a set of 3,399 genes from multiple eukaryotes that have been studied in the context of bipolar disorder and/or substance abuse. A web resource to automate the selection of genes that contain certain database links is available at http://compbio.jsums.edu/bpd.
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