1
|
Wang RY, Chen HJ, Huang CL, Wang JY, Lee TE, Lee HY, Hung CC. Impacts of GRIN3A, GRM6 and TPH2 genetic polymorphisms on quality of life in methadone maintenance therapy population. PLoS One 2018; 13:e0201408. [PMID: 30059533 PMCID: PMC6066242 DOI: 10.1371/journal.pone.0201408] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/14/2018] [Indexed: 11/18/2022] Open
Abstract
Opioid addiction is a major public health issue worldwide. Methadone maintenance treatment (MMT) is used to detoxify users of illicit opiates, but drug relapse is common and associated with poor quality of life (QoL). This study investigated the associations between the GRIN3A, GRM6, and TPH2 genetic variants and QoL in the MMT population. A total of 319 participants were included in the study, and genotyping of GRIN3A, GRM6, and TPH2 genes was performed using the Sequenom iPLEX. Associations between genotypes and the domains of QoL were examined through posthoc analysis with LSMEANS syntax using SAS 9.1.3. The single nucleotide polymorphisms rs9325202 and rs1487275 in the TPH2 gene were significantly associated with the QoL domain of physical functioning. The least absolute shrinkage and selection operator regression model revealed that the risk allele rs1487275-G was significantly correlated with the domain of physical functioning when clinical characteristics were considered as covariates. The results of the present study illuminate the importance of the genetic basis of QoL in the MMT population, and suggest that genotypes should be considered as a potential QoL indicator.
Collapse
Affiliation(s)
- Ruey-Yun Wang
- Department of Public Health, China Medical University, Taichung, Taiwan, R.O.C
- Brain Disease Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C
| | - Hsiu-Ju Chen
- Department of Pharmacy, College of Pharmacy, China Medical University, Taiwan, R.O.C
| | - Chieh-Liang Huang
- Brain Disease Research Center, China Medical University Hospital, Taichung, Taiwan, R.O.C
- Center for Drug Abuse and Addiction, China Medical University Hospital, Taichung, Taiwan, R.O.C
- College of Medicine, China Medical University, Taichung, Taiwan, R.O.C
| | - Jiun-Yi Wang
- Department of Healthcare Administration, Asia University, Wufeng, Taichung, Taiwan, R.O.C
| | - Tsui-Er Lee
- Office of Physical Education, Asia University, Taichung, Taiwan, R.O.C
| | - Hsiang-Yen Lee
- Department of Internal Medicine, Taipei Medical University Hospital, Xinyi District, Taipei City, Taiwan, R.O.C
| | - Chin-Chuan Hung
- Department of Pharmacy, College of Pharmacy, China Medical University, Taiwan, R.O.C
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan, R.O.C
- * E-mail:
| |
Collapse
|
2
|
Gillespie AL, Samanaite R, Mill J, Egerton A, MacCabe JH. Is treatment-resistant schizophrenia categorically distinct from treatment-responsive schizophrenia? a systematic review. BMC Psychiatry 2017; 17:12. [PMID: 28086761 PMCID: PMC5237235 DOI: 10.1186/s12888-016-1177-y] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 12/23/2016] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Schizophrenia is a highly heterogeneous disorder, and around a third of patients are treatment-resistant. The only evidence-based treatment for these patients is clozapine, an atypical antipsychotic with relatively weak dopamine antagonism. It is plausible that varying degrees of response to antipsychotics reflect categorically distinct illness subtypes, which would have significant implications for research and clinical practice. If these subtypes could be distinguished at illness onset, this could represent a first step towards personalised medicine in psychiatry. This systematic review investigates whether current evidence supports conceptualising treatment-resistant and treatment-responsive schizophrenoa as categorically distinct subtypes. METHOD A systematic literature search was conducted, using PubMed, EMBASE, PsycInfo, CINAHL and OpenGrey databases, to identify all studies which compared treatment-resistant schizophrenia (defined as either a lack of response to two antipsychotic trials or clozapine prescription) to treatment-responsive schizophrenia (defined as known response to non-clozapine antipsychotics). RESULTS Nineteen studies of moderate quality met inclusion criteria. The most robust findings indicate that treatment-resistant patients show glutamatergic abnormalities, a lack of dopaminergic abnormalities, and significant decreases in grey matter compared to treatment-responsive patients. Treatment-resistant patients were also reported to have higher familial loading; however, no individual gene-association study reported their findings surviving correction for multiple comparisons. CONCLUSIONS Tentative evidence supports conceptualising treatment-resistant schizophrenia as a categorically different illness subtype to treatment-responsive schizophrenia. However, research is limited and confirmation will require replication and rigorously controlled studies with large sample sizes and prospective study designs.
Collapse
Affiliation(s)
- Amy L. Gillespie
- Psychosis Studies Department, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, 16 De Crespigny Park, Denmark Hill, London, SE5 8AF UK
| | - Ruta Samanaite
- Psychosis Studies Department, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, 16 De Crespigny Park, Denmark Hill, London, SE5 8AF UK
| | - Jonathan Mill
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, UK ,University of Exeter Medical School, Exeter University, St Luke’s Campus, Exeter, UK
| | - Alice Egerton
- Psychosis Studies Department, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, 16 De Crespigny Park, Denmark Hill, London, SE5 8AF UK
| | - James H. MacCabe
- Psychosis Studies Department, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, 16 De Crespigny Park, Denmark Hill, London, SE5 8AF UK
| |
Collapse
|
3
|
Fernàndez-Castillo N, Cormand B. Aggressive behavior in humans: Genes and pathways identified through association studies. Am J Med Genet B Neuropsychiatr Genet 2016; 171:676-96. [PMID: 26773414 DOI: 10.1002/ajmg.b.32419] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 01/04/2016] [Indexed: 12/21/2022]
Abstract
Aggressive behavior has both genetic and environmental components. Many association studies have been performed to identify genetic factors underlying aggressive behaviors in humans. In this review we summarize the previous work performed in this field, considering both candidate gene (CGAS) and genome-wide association studies (GWAS), excluding those performed in samples where the primary diagnosis is a psychiatric or neurological disorder other than an aggression-related phenotype. Subsequently, we have studied the enrichment of pathways and functions in GWAS data. The results of our searches show that most CGAS have identified associations with genes involved in dopaminergic and serotonergic neurotransmission and in hormone regulation. On the other hand, GWAS have not yet identified genome-wide significant associations, but top nominal findings are related to several signaling pathways, such as axon guidance or estrogen receptor signaling, and also to neurodevelopmental processes and synaptic plasticity. Future studies should use larger samples, homogeneous phenotypes and standardized measurements to identify genes that underlie aggressive behaviors in humans. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Noèlia Fernàndez-Castillo
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Catalonia, Spain.,Institut de Biomedicina de la Universitat de Barcelona (IBUB), Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Spain
| | - Bru Cormand
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Catalonia, Spain.,Institut de Biomedicina de la Universitat de Barcelona (IBUB), Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Spain
| |
Collapse
|
4
|
Blum K, Simpatico T, Febo M, Rodriquez C, Dushaj K, Li M, Braverman ER, Demetrovics Z, Oscar-Berman M, Badgaiyan RD. Hypothesizing Music Intervention Enhances Brain Functional Connectivity Involving Dopaminergic Recruitment: Common Neuro-correlates to Abusable Drugs. Mol Neurobiol 2016; 54:3753-3758. [PMID: 27246565 DOI: 10.1007/s12035-016-9934-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 05/10/2016] [Indexed: 01/27/2023]
Abstract
The goal of this review is to explore the clinical significance of music listening on neuroplasticity and dopaminergic activation by understanding the role of music therapy in addictive behavior treatment. fMRI data has shown that music listening intensely modifies mesolimbic structural changes responsible for reward processing (e.g., nucleus accumbens [NAc]) and may control the emotional stimuli's effect on autonomic and physiological responses (e.g., hypothalamus). Music listening has been proven to induce the endorphinergic response blocked by naloxone, a common opioid antagonist. NAc opioid transmission is linked to the ventral tegmental area (VTA) dopamine release. There are remarkable commonalities between listening to music and the effect of drugs on mesolimbic dopaminergic activation. It has been found that musical training before the age of 7 results in changes in white-matter connectivity, protecting carriers with low dopaminergic function (DRD2A1 allele, etc.) from poor decision-making, reward dependence, and impulsivity. In this article, we briefly review a few studies on the neurochemical effects of music and propose that these findings are relevant to the positive clinical findings observed in the literature. We hypothesize that music intervention enhances brain white matter plasticity through dopaminergic recruitment and that more research is needed to explore the efficacy of these therapies.
Collapse
Affiliation(s)
- Kenneth Blum
- Department of Psychiatry & McKnight Brain Institute, University of Florida, College of Medicine, Box 100183, Gainesville, FL, 32610-0183, USA. .,Department of Psychiatry and Human Global Mental Health Institute, Center for Clinical & Translational Science, University of Vermont, Burlington, VT, USA. .,Division of Neuroscience -Based Therapy, Summit Estate Recovery Center, Las Gatos, CA, USA. .,Division of Addition Services, Dominion Diagnostics, LLC, North Kingstown, RI, USA. .,PATH Foundation NY, New York, NY, USA. .,IGENE, LLC, Austin, TX, USA. .,Division of Applied Clinical Research, Dominion Diagnostics, LLC, North Kingstown, RI, USA. .,Department of Clinical Psychology and Addiction, Institute of Psychology, Eötvös Loránd University, Budapest, Hungary. .,Division of Neuroscience Research & Addiction Therapy, Shores Treatment & Recovery Center, Port Saint Lucie, FL, USA.
| | - Thomas Simpatico
- Department of Psychiatry and Human Global Mental Health Institute, Center for Clinical & Translational Science, University of Vermont, Burlington, VT, USA
| | - Marcelo Febo
- Department of Psychiatry & McKnight Brain Institute, University of Florida, College of Medicine, Box 100183, Gainesville, FL, 32610-0183, USA
| | | | | | - Mona Li
- PATH Foundation NY, New York, NY, USA
| | | | - Zsolt Demetrovics
- Department of Clinical Psychology and Addiction, Institute of Psychology, Eötvös Loránd University, Budapest, Hungary
| | - Marlene Oscar-Berman
- Departments of Psychiatry and Anatomy & Neurobiology, Boston University School of Medicine and Boston VA Healthcare System, Boston, MA, USA
| | - Rajendra D Badgaiyan
- Department of Psychiatry, University of Minnesota, Minneapolis, MN, USA.,Neuromodulation Program, University of Minnesota Twin City Campus, Minneapolis, MN, USA.,Laboratory of Advanced Radiochemistry, University of Minnesota Twin City Campus, Minneapolis, MN, USA
| |
Collapse
|
5
|
Steenbergen L, Jongkees BJ, Sellaro R, Colzato LS. Tryptophan supplementation modulates social behavior: A review. Neurosci Biobehav Rev 2016; 64:346-58. [DOI: 10.1016/j.neubiorev.2016.02.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 02/22/2016] [Accepted: 02/23/2016] [Indexed: 01/09/2023]
|
6
|
Veroude K, Zhang-James Y, Fernàndez-Castillo N, Bakker MJ, Cormand B, Faraone SV. Genetics of aggressive behavior: An overview. Am J Med Genet B Neuropsychiatr Genet 2016; 171B:3-43. [PMID: 26345359 DOI: 10.1002/ajmg.b.32364] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 08/05/2015] [Indexed: 12/24/2022]
Abstract
The Research Domain Criteria (RDoC) address three types of aggression: frustrative non-reward, defensive aggression and offensive/proactive aggression. This review sought to present the evidence for genetic underpinnings of aggression and to determine to what degree prior studies have examined phenotypes that fit into the RDoC framework. Although the constructs of defensive and offensive aggression have been widely used in the animal genetics literature, the human literature is mostly agnostic with regard to all the RDoC constructs. We know from twin studies that about half the variance in behavior may be explained by genetic risk factors. This is true for both dimensional, trait-like, measures of aggression and categorical definitions of psychopathology. The non-shared environment seems to have a moderate influence with the effects of shared environment being unclear. Human molecular genetic studies of aggression are in an early stage. The most promising candidates are in the dopaminergic and serotonergic systems along with hormonal regulators. Genome-wide association studies have not yet achieved genome-wide significance, but current samples are too small to detect variants having the small effects one would expect for a complex disorder. The strongest molecular evidence for a genetic basis for aggression comes from animal models comparing aggressive and non-aggressive strains or documenting the effects of gene knockouts. Although we have learned much from these prior studies, future studies should improve the measurement of aggression by using a systematic method of measurement such as that proposed by the RDoC initiative.
Collapse
Affiliation(s)
- Kim Veroude
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboudumc, Nijmegen, The Netherlands
| | - Yanli Zhang-James
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, New York.,Departments of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, New York
| | - Noèlia Fernàndez-Castillo
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Catalonia, Spain.,Institut de Biomedicina de la Universitat de Barcelona (IBUB), Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Spain
| | - Mireille J Bakker
- Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboudumc, Nijmegen, The Netherlands
| | - Bru Cormand
- Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Catalonia, Spain.,Institut de Biomedicina de la Universitat de Barcelona (IBUB), Catalonia, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Spain
| | - Stephen V Faraone
- Departments of Psychiatry and of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, New York.,Departments of Neuroscience and Physiology, SUNY Upstate Medical University, Syracuse, New York.,K.G. Jebsen Centre for Research on Neuropsychiatric Disorders, University of Bergen, Bergen, Norway
| |
Collapse
|
7
|
Castro-Díaz S, Gómez-Restrepo C, Gil F, Uribe Restrepo M, Miranda C, de la Espriella M, Arenas Á, Pinto D. [Risk Factors for Suicidal Ideation in Patients with Depressive Disorders in Colombia]. ACTA ACUST UNITED AC 2014; 43 Suppl 1:27-35. [PMID: 26574111 DOI: 10.1016/j.rcp.2013.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 11/28/2013] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Suicidal ideation is a poor prognostic factor in patients with depression, due to the risk of suicide attempt or completed suicide. However, it is a relatively unexplored aspect in the Colombian population. It is important to identify the associated factors in order to develop appropriate treatment strategies. OBJECTIVE To identify risk factors for suicidal ideation in patients with major depressive disorder between 18 and 65 years in 5 Colombian cities. METHODS Data from 295 patients diagnosed with major depressive disorder were used from the Study of the Economic Burden of Depression in Colombia. The association between the clinical and psychosocial variables with the presence of suicidal ideation was assessed using two-level hierarchical models. RESULTS Female sex was a factor associated with a lower risk of suicidal ideation. Factors associated with the presence of suicidal ideation include unemployment, smoking and alcohol use in the past 30 days, mental health perceived as fair or poor, diagnosis of double depression, inpatient treatment, low income, unemployment, and a major financial crisis in the last 2 years. CONCLUSIONS Suicidal ideation is highly prevalent in patients with major depressive disorder. Risk factors associated with both the clinical and psychosocial domain must be carefully evaluated during risk assessment of patients with this diagnosis.
Collapse
Affiliation(s)
- Sergio Castro-Díaz
- Médico, residente de Psiquiatría de tercer año, Departamento de Psiquiatría y Salud Mental, Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Carlos Gómez-Restrepo
- Médico psiquiatra, psicoanalista, epidemiólogo clínico, profesor del Departamento de Psiquiatría y Salud Mental, director del Departamento de Epidemiología Clínica y Bioestadística, Pontificia Universidad Javeriana, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Fabián Gil
- Estadístico y bioestadístico, profesor asistente del Departamento de Epidemiología Clínica y Bioestadística, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Miguel Uribe Restrepo
- Médico psiquiatra, psicoanalista, Departamento de Psiquiatría y Salud Mental, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Carlos Miranda
- Médico psiquiatra, director médico del Hospital Psiquiátrico Universitario del Valle, profesor de la Universidad del Valle, Cali, Colombia
| | - Mauricio de la Espriella
- Médico psiquiatra, director médico de la Clínica Nuestra Señora del Perpetuo Socorro, Pasto. Profesor del Departamento de Psiquiatría y Salud Mental, Pontificia Universidad Javeriana, Pasto, Colombia
| | - Álvaro Arenas
- Médico psiquiatra, director científico de la Clínica la Inmaculada. Instructor del Departamento de Psiquiatría y Salud Mental, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Diana Pinto
- Médica, magistra en Administración de Salud, DSc en Economía y Política de Salud Internacional. Profesora asociada del Departamento de Epidemiología Clínica y Bioestadística, Pontificia Universidad Javeriana, Bogotá, Colombia
| |
Collapse
|
8
|
Barrot C, Sánchez C, Abellana R, Ortega M, Gené M. Polimorfismos genéticos como indicadores de la vulnerabilidad individual a la adicción al tabaco. Med Clin (Barc) 2013. [DOI: 10.1016/j.medcli.2012.05.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
9
|
Interaction between tryptophan hydroxylase I polymorphisms and childhood abuse is associated with increased risk for borderline personality disorder in adulthood. Psychiatr Genet 2012; 22:15-24. [PMID: 21989108 DOI: 10.1097/ypg.0b013e32834c0c4c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Borderline personality disorder (BPD) is a severe disorder with high morbidity and mortality, but unknown etiology. Childhood abuse has been proposed as an etiological factor, but the mechanism by which an abuse history could influence the risk for BPD has not been determined. The aim of this study was to determine whether the tryptophan hydroxylase 1 (TPH1) gene is related to BPD in a clinical sample, and whether TPH1 genotypes or haplotypes moderate the relationship between abuse history and BPD. METHODS Three hundred and ninety-eight patients diagnosed with mood disorders were genotyped for TPH1 G-6526A promoter polymorphism (rs4537731) and the A218C intron 7 polymorphism (rs1800532) and a set of ancestry informative markers, assessed for Diagnostic and Statistical Manual of Mental Disorders, 4th edition diagnoses, and assessed for a history of physical and sexual abuse. RESULTS Patients with a diagnosis of BPD were more likely to be risk allele carriers (A alleles at both loci) than the non-BPD group. Logistic regression analysis predicting BPD diagnosis with both single-nucleotide polymorphisms and haplotypes showed significant interaction effects between genotype and abuse history. Poisson regression predicting the number of BPD diagnostic criteria met with the same predictor set also included a significant interaction term. Risk allele carriers with a history of abuse had an increased likelihood of a BPD diagnosis. CONCLUSION Variation in TPH1 may increase risk for developing BPD as a result of childhood abuse. Elements of BPD pathology may be due in part to a genetically influenced serotonergic dysfunction, which in turn may lead to a differential response to environmental stressors.
Collapse
|
10
|
Wang J, Li MD. Common and unique biological pathways associated with smoking initiation/progression, nicotine dependence, and smoking cessation. Neuropsychopharmacology 2010; 35:702-19. [PMID: 19890259 PMCID: PMC2814000 DOI: 10.1038/npp.2009.178] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Twin and family studies reveal a significant genetic contribution to the risk of smoking initiation and progression (SI/P), nicotine dependence (ND), and smoking cessation (SC). Further, numerous genes have been implicated in these smoking-related behaviors, especially for ND. However, no study has presented a comprehensive and systematic view of the genetic factors associated with these important smoking-related phenotypes. By reviewing the literature on these behaviors, we identified 16, 99, and 75 genes that have been associated with SI/P, ND, and SC, respectively. We then determined whether these genes were enriched in pathways important in the neuronal and brain functions underlying addiction. We identified 9, 21, and 13 pathways enriched in the genes associated with SI/P, ND, and SC, respectively. Among these pathways, four were common to all of the three phenotypes, that is, calcium signaling, cAMP-mediated signaling, dopamine receptor signaling, and G-protein-coupled receptor signaling. Further, we found that serotonin receptor signaling and tryptophan metabolism pathways were shared by SI/P and ND, tight junction signaling pathway was shared by SI/P and SC, and gap junction, neurotrophin/TRK signaling, synaptic long-term potentiation, and tyrosine metabolism were shared between ND and SC. Together, these findings show significant genetic overlap among these three related phenotypes. Although identification of susceptibility genes for smoking-related behaviors is still in an early stage, the approach used in this study has the potential to overcome the hurdles caused by factors such as genetic heterogeneity and small sample size, and thus should yield greater insights into the genetic mechanisms underlying these complex phenotypes.
Collapse
Affiliation(s)
- Ju Wang
- Section of Neurobiology, Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, Charlottesville, VA, USA
| | - Ming D Li
- Section of Neurobiology, Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, Charlottesville, VA, USA,Section of Neurobiology, Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Suite 110, Charlottesville, VA 22911, USA. Tel: +434 243 0566; Fax: +434 973 7031; E-mail:
| |
Collapse
|
11
|
Ukkola LT, Onkamo P, Raijas P, Karma K, Järvelä I. Musical aptitude is associated with AVPR1A-haplotypes. PLoS One 2009; 4:e5534. [PMID: 19461995 PMCID: PMC2678260 DOI: 10.1371/journal.pone.0005534] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 04/28/2009] [Indexed: 12/16/2022] Open
Abstract
Artistic creativity forms the basis of music culture and music industry. Composing, improvising and arranging music are complex creative functions of the human brain, which biological value remains unknown. We hypothesized that practicing music is social communication that needs musical aptitude and even creativity in music. In order to understand the neurobiological basis of music in human evolution and communication we analyzed polymorphisms of the arginine vasopressin receptor 1A (AVPR1A), serotonin transporter (SLC6A4), catecol-O-methyltranferase (COMT), dopamin receptor D2 (DRD2) and tyrosine hydroxylase 1 (TPH1), genes associated with social bonding and cognitive functions in 19 Finnish families (n = 343 members) with professional musicians and/or active amateurs. All family members were tested for musical aptitude using the auditory structuring ability test (Karma Music test; KMT) and Carl Seashores tests for pitch (SP) and for time (ST). Data on creativity in music (composing, improvising and/or arranging music) was surveyed using a web-based questionnaire. Here we show for the first time that creative functions in music have a strong genetic component (h(2) = .84; composing h(2) = .40; arranging h(2) = .46; improvising h(2) = .62) in Finnish multigenerational families. We also show that high music test scores are significantly associated with creative functions in music (p<.0001). We discovered an overall haplotype association with AVPR1A gene (markers RS1 and RS3) and KMT (p = 0.0008; corrected p = 0.00002), SP (p = 0.0261; corrected p = 0.0072) and combined music test scores (COMB) (p = 0.0056; corrected p = 0.0006). AVPR1A haplotype AVR+RS1 further suggested a positive association with ST (p = 0.0038; corrected p = 0.00184) and COMB (p = 0.0083; corrected p = 0.0040) using haplotype-based association test HBAT. The results suggest that the neurobiology of music perception and production is likely to be related to the pathways affecting intrinsic attachment behavior.
Collapse
Affiliation(s)
- Liisa T. Ukkola
- Department of Medical Genetics, University of Helsinki, Helsinki, Finland
| | - Päivi Onkamo
- Department of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Pirre Raijas
- Sibelius Academy, DocMus Department, Helsinki, Finland
| | - Kai Karma
- Sibelius Academy, Department of Music Education, Helsinki, Finland
| | - Irma Järvelä
- Department of Medical Genetics, University of Helsinki, Helsinki, Finland
- Laboratory of Molecular Genetics, Helsinki University Central Hospital, Helsinki, Finland
| |
Collapse
|
12
|
Wilson ST, Stanley B, Brent DA, Oquendo MA, Huang YY, Mann JJ. The tryptophan hydroxylase-1 A218C polymorphism is associated with diagnosis, but not suicidal behavior, in borderline personality disorder. Am J Med Genet B Neuropsychiatr Genet 2009; 150B:202-8. [PMID: 18506706 PMCID: PMC2674018 DOI: 10.1002/ajmg.b.30788] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
While there is some preliminary evidence that the tryptophan hydroxylase I (TPH1) polymorphisms are related to Borderline Personality Disorder (BPD), it is not clear if this association is due to the high rates of suicidal behavior in this patient group. Because of the reported association between TPH1 polymorphisms and suicidal behavior, determining whether TPH1 is related to BPD independent of suicidal behavior is of particular importance. One hundred patients diagnosed with BPD and 101 healthy controls were genotyped for TPH1 intron 7 A218C polymorphism and assessed for impulsiveness and hostility. The BPD patient group had a higher frequency of A allele carriers (AA/AC genotypes) than the control group (chi(2) = 6.12, df = 1, P = 0.01), and differed by genotype frequencies (P = 0.03). Suicide attempter status in the patient group was not related to genotype. Logistic regression analysis controlling for age and gender predicted BPD diagnosis from TPH1 allele group (AA/AC vs. CC, P = 0.03), and TPH1 heterozygotes (AC) appeared to have the highest risk for BPD (P = 0.03). In the full sample, participants with the AC genotype had higher impulsiveness and hostility scores. However, TPH1 did not predict these traits in either of the groups independently, suggesting the association may be an artifact of the association between TPH1 and BPD. Results suggest that the A allele of the tryptophan hydroxylase-1 A218 polymorphism may be associated with BPD, and that it does not appear to be related to suicidal behavior in this population. An aspect of BPD pathology may be due to serotonergic dysfunction.
Collapse
Affiliation(s)
- Scott T. Wilson
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute
,Department of Psychiatry, Columbia University College of Physicians & Surgeons
| | - Barbara Stanley
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute
,Department of Psychiatry, Columbia University College of Physicians & Surgeons
,Department of Psychology, City University of New York-John Jay College
| | - David A. Brent
- Department of Psychiatry, University of Pittsburg Medical Center
| | - Maria A. Oquendo
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute
,Department of Psychiatry, Columbia University College of Physicians & Surgeons
| | - Yung-yu Huang
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute
,Department of Psychiatry, Columbia University College of Physicians & Surgeons
| | - J. John Mann
- Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute
,Department of Psychiatry, Columbia University College of Physicians & Surgeons
| |
Collapse
|
13
|
Gartner CE, Barendregt JJ, Hall WD. Multiple genetic tests for susceptibility to smoking do not outperform simple family history. Addiction 2009; 104:118-26. [PMID: 19133896 DOI: 10.1111/j.1360-0443.2008.02392.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AIMS To evaluate the utility of using predictive genetic screening of the population for susceptibility to smoking. METHODS The results of meta-analyses of genetic association studies of smoking behaviour were used to create simulated data sets using Monte Carlo methods. The ability of the genetic tests to screen for smoking was assessed using receiver operator characteristic curve analysis. The result was compared to prediction using simple family history information. To identify the circumstances in which predictive genetic testing would potentially justify screening we simulated tests using larger numbers of alleles (10, 15 and 20) that varied in prevalence from 10 to 50% and in strength of association [relative risks (RRs) of 1.2-2.1]. RESULTS A test based on the RRs and prevalence of five susceptibility alleles derived from meta-analyses of genetic association studies of smoking performed similarly to chance and no better than the prediction based on simple family history. Increasing the number of alleles from five to 20 improved the predictive ability of genetic screening only modestly when using genes with the effect sizes reported to date. CONCLUSIONS This panel of genetic tests would be unsuitable for population screening. This situation is unlikely to be improved upon by screening based on more genetic tests. Given the similarity with associations found for other polygenic conditions, our results also suggest that using multiple genes to screen the general population for genetic susceptibility to polygenic disorders will be of limited utility.
Collapse
Affiliation(s)
- Coral E Gartner
- The University of Queensland, School of Population Health, Herston, QLD, Australia.
| | | | | |
Collapse
|
14
|
David SP, Johnstone EC, Murphy MF, Aveyard P, Guo B, Lerman C, Munafò MR. Genetic variation in the serotonin pathway and smoking cessation with nicotine replacement therapy: new data from the Patch in Practice trial and pooled analyses. Drug Alcohol Depend 2008; 98:77-85. [PMID: 18562131 PMCID: PMC4439462 DOI: 10.1016/j.drugalcdep.2008.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Revised: 04/20/2008] [Accepted: 04/23/2008] [Indexed: 11/24/2022]
Abstract
The serotonin pathway has been implicated in nicotine dependence and may influence smoking cessation. Therefore, 792 cigarette smokers from the Patch in Practice trial were genotyped for the tryptophan hydroxylase (TPH1 A779C), serotonin transporter (SLC6A45-HTTLPR), and 5-HT1A (HTR1A C-1019G) polymorphisms. Cox regression analysis did not demonstrate significant effects of any of the three genotypes on relapse to smoking: TPH1 (Reference AA; AC: hazard ratio (HR) 0.99, 95% confidence interval (CI) 0.78, 1.24, p=0.90; CC: HR 0.93, 95% CI 0.73, 1.18, p=0.55); 5-HTTLPR (Reference LL; SL: HR 1.01, 95% CI 0.85, 1.20, p=0.90; SS: HR 1.13, 95% CI 0.91, 1.39, p=0.27); HTR1A (Reference CC; CG: HR 1.04, 95% CI 0.86, 1.25, p=0.70; GG: HR 1.01, 95% CI 0.82, 1.24, p=0.93). Moreover, pooled analyses of data from all three extant pharmacogenetic NRT trials (N=1398) found no significant effect of 5-HTTLPR genotype on continuous abstinence at 12-week (Reference LL; SL: odds ratio (OR)=1.25, 95% CI 0.89, 1.74, p=0.19; SS: OR=1.31, 95% CI 0.86, 1.98, p=0.21) or 26-week follow-up (Reference LL; SL: OR=0.93, 95% CI 0.64, 1.33, p=0.68; SS: OR=1.00, 95% CI 0.63, 1.58, p=1.00). These data do not support a statistically or clinically significant moderating effect of these specific 5-HT pathway genetic variants on smoking cessation. However, the possibility remains that other variants in these or other 5-HT genes may influence NRT efficacy for smoking cessation in treatment seeking smokers.
Collapse
Affiliation(s)
- Sean P. David
- Department of Family Medicine, Center for Primary Care & Prevention, The Warren Alpert Medical School of Brown University, 111 Brewster Street, Pawtucket, RI 02806, USA,Corresponding author at: Brown University Center for Primary Care & Prevention, 111 Brewster Street, Pawtucket, RI 02860, USA. Tel.: +1 401 729 2071; fax: +1 401 729 2494. (S.P. David)
| | - Elaine C. Johnstone
- Department of Clinical Pharmacology, University of Oxford, Old Road Campus Research Building, Old Road Campus, Oxford OX3 7DQ, UK
| | - Michael F.G. Murphy
- Department of Paediatrics, Childhood Cancer Research Group, University of Oxford, 57 Woodstock Road, Oxford OX2 6HJ, UK
| | - Paul Aveyard
- Department of Primary Care and General Practice, University of Birmingham, Edgbaston B15 2TT, UK
| | - Boliang Guo
- Department of Public Health and Epidemiology, University of Birmingham, Birmingham B15 2TT, UK
| | - Caryn Lerman
- Department of Psychiatry, Tobacco Use Research Center, University of Pennsylvania, 3535 Market Street, Philadelphia, PA 19194, USA
| | - Marcus R. Munafò
- Department of Experimental Psychology, University of Bristol, 12a Priory Road, Bristol BS8 1TU, UK
| |
Collapse
|
15
|
Montag C, Basten U, Stelzel C, Fiebach CJ, Reuter M. The BDNF Val66Met polymorphism and smoking. Neurosci Lett 2008; 442:30-3. [DOI: 10.1016/j.neulet.2008.06.064] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2008] [Revised: 06/24/2008] [Accepted: 06/24/2008] [Indexed: 01/23/2023]
|
16
|
Nielsen DA, Barral S, Proudnikov D, Kellogg S, Ho A, Ott J, Kreek MJ. TPH2 and TPH1: association of variants and interactions with heroin addiction. Behav Genet 2008; 38:133-50. [PMID: 18181017 DOI: 10.1007/s10519-007-9187-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2007] [Accepted: 12/04/2007] [Indexed: 12/11/2022]
Abstract
The tryptophan hydroxylase 2 gene (TPH2) was resequenced at the 5' upstream, coding, and 3' downstream regions, including all 11 exons in 185 subjects. Twenty-three novel and 14 known variants were identified. In a cohort of 583 consecutively ascertained subjects, including normal volunteers and those with specific addictive diseases, six common TPH2 and one TPH1 variant were genotyped. Allele frequencies of three TPH2 variants and the TPH1 variant varied significantly among the four ethnic groups within the control subjects. Of these subjects, 385 who met heroin addiction or control criteria and were of Caucasian, African-American, or Hispanic ethnicity were examined for potential association with vulnerability to develop heroin addiction. At the two locus genotype level in Hispanics, the TPH1 rs1799913 variant was found to significantly interact with the TPH2 rs7963720 variant and heroin addiction (P=0.022), and with the TPH2 rs4290270 variant and heroin addiction (P=0.011). In the African-American group, a significant association of a specific TPH2 haplotype with heroin addiction also was found (SNPHAP, P=0.004; PHASE P=0.036).
Collapse
Affiliation(s)
- David A Nielsen
- Laboratory of Biology of the Addictive Diseases, The Rockefeller University, Box 171, 1230 York Avenue, New York, NY 10065, USA.
| | | | | | | | | | | | | |
Collapse
|
17
|
Reuter M, Hennig J, Amelang M, Montag C, Korkut T, Hueweler A, Stürmer T. The role of the TPH1 and TPH2 genes for nicotine dependence: a genetic association study in two different age cohorts. Neuropsychobiology 2008; 56:47-54. [PMID: 17986837 DOI: 10.1159/000110728] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2007] [Accepted: 09/13/2007] [Indexed: 11/19/2022]
Abstract
Based on pharmacological and genetic studies suggesting a role of the serotonergic system for nicotine dependence, two genetic variants, one on the tryptophan hydroxylase 1 (TPH1) and one on the TPH2 gene, were investigated. The TPH2 -703G/T promoter polymorphism was associated with smoking status and age of smoking onset in two independent Caucasian samples of different age cohorts. Sample 1 consisted of 3,602 subjects of a population-based cohort study of whom 95% were 40-65 years old, and sample 2 consisted of 723 subjects in the twenties. The TPH1 779A/C was only investigated in sample 2 where additional data with respect to the degree of nicotine dependence were assessed. Results yield support for previous findings of an association between the AA genotype of TPH1 779A/C and nicotine status and a tendency for a heterosis effect with respect to the degree of nicotine dependence. The TPH2 -703G/T was significantly associated with age of smoking onset in both samples. The interaction between the T allele and gender was significant in both samples. Carriers of the GG genotype started significantly earlier to smoke than carriers with a T allele. In the older cohort, age of onset was earlier in carriers of the GG genotype only in men, and in the younger cohort the GG genotype predisposes only women to start smoking earlier in life. This interaction could constitute a gene-by-environment interaction that is discussed on the background of previous studies relating the -703G/T polymorphism to anxiety, a personality dimension that has been shown to be a risk factor for nicotine dependence.
Collapse
Affiliation(s)
- Martin Reuter
- Department of Psychology, University of Bonn, Bonn, Germany.
| | | | | | | | | | | | | |
Collapse
|
18
|
Association between 5-HT2A, TPH1 and GNB3 genotypes and response to typical neuroleptics: a serotonergic approach. BMC Psychiatry 2007; 7:22. [PMID: 17521439 PMCID: PMC1888684 DOI: 10.1186/1471-244x-7-22] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Accepted: 05/23/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Schizophrenia is a common psychiatric disease affecting about 1% of population. One major problem in the treatment is finding the right the drug for the right patients. However, pharmacogenetic results in psychiatry can seldom be replicated. METHODS We selected three candidate genes associated with serotonergic neurotransmission for the study: serotonin 2A (5-HT2A) receptor gene, tryptophan hydroxylase 1 (TPH1) gene, and G-protein beta-3 subunit (GNB3) gene. We recruited 94 schizophrenia patients representing extremes in treatment response to typical neuroleptics: 43 were good responders and 51 were poor responders. The control group consisted of 392 healthy blood donors. RESULTS We do, in part, replicate the association between 5-HT2A T102C polymorphism and response to typical neuroleptics. In female patients, C/C genotype was significantly more common in non-responders than in responders [OR = 6.04 (95% Cl 1.67-21.93), p = 0.005] or in the control population [OR = 4.16 (95% CI 1.46-11.84), p = 0.005]. TPH1 A779C C/A genotype was inversely associated with good treatment response when compared with non-responders [OR = 0.59 (95% Cl 0.36-0.98), p = 0.030] or with the controls [OR = 0.44 (95% CI 0.23-0.86, p = 0.016], and GNB3 C825T C/T genotype showed a trend-like positive association among the male patients with a good response compared with non-responders [OR = 3.48 (95% Cl 0.92-13.25), p = 0.061], and a clearer association when compared with the controls [OR = 4.95 (95% CI 1.56-15.70), p = 0.004]. CONCLUSION More findings on the consequences of functional polymorphisms for the role of serotonin in the development of brain and serotonergic neurotransmission are needed before more detailed hypotheses regarding susceptibility and outcome in schizophrenia can be formulated. The present results may highlight some of the biological mechanisms in different courses of schizophrenia between men and women.
Collapse
|
19
|
Reuter M, Ott U, Vaitl D, Hennig J. Impaired executive control is associated with a variation in the promoter region of the tryptophan hydroxylase 2 gene. J Cogn Neurosci 2007; 19:401-8. [PMID: 17335389 DOI: 10.1162/jocn.2007.19.3.401] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Current models of attention describe attention not as a homogenous entity but as a set of neural networks whose measurement yields a set of three endophenotypes-alerting, orienting, and executive control. Previous findings revealed different neuroanatomical regions for these subsystems, and data from twin studies indicate differences in their heritability. The present study investigated the molecular genetic basis of attention in a sample of 100 healthy subjects. Attention performance was assessed with the attention network test that distinguishes alerting, orienting, and executive control (conflict) using a simple reaction time paradigm with different cues and congruent and incongruent flankers. Two gene loci on candidate genes for cognitive functioning, the functional catechol-O-methyltransferase (COMT) VAL158MET and the tryptophan hydroxylase 2 (TPH2) -703 G/T promoter polymorphism, were tested for possible associations with attention. COMT is involved in the catabolism of dopamine, and TPH is the rate-limiting enzyme for serotonin synthesis. Results showed no effect of the COMT polymorphism on attention performance. However, the TT genotype of TPH2 -03 G/T was significantly associated with more errors (a possible indicator of impaired impulse control; p = .001) and with decreased performance in executive control (p = .001). This single-nucleotide polymorphism on the TPH2 gene explained more than 10% of the variance in both indicators of attention stressing the role of the serotonergic system for cognitive functions.
Collapse
|
20
|
Ho MK, Tyndale RF. Overview of the pharmacogenomics of cigarette smoking. THE PHARMACOGENOMICS JOURNAL 2007; 7:81-98. [PMID: 17224913 DOI: 10.1038/sj.tpj.6500436] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cigarette smoking increases the risk of numerous health problems, including cancer, cardiovascular and pulmonary disorders, making smoking the leading cause of preventable death in the world. Nicotine is primarily responsible for the highly addictive properties of cigarettes. Although the majority of smokers express a desire to quit, few are successful in doing so. Twin and family studies have indicated substantial genetic contributions to smoking behaviors. One major research focus has been to elucidate the specific genes involved; this has been accomplished primarily through genome-wide linkage analyses and candidate gene association studies. Much attention has focused on genes involved in the neurotransmitter pathways for the brain reward system and genes altering nicotine metabolism. This paper reviews the current state of knowledge for genetic factors implicated in smoking behaviors, and examines how genetic variations may affect therapeutic outcomes for drugs used to assist smoking cessation.
Collapse
Affiliation(s)
- M K Ho
- Centre for Addiction and Mental Health, Department of Pharmacology, University of Toronto, Toronto, Canada
| | | |
Collapse
|
21
|
Christiansen L, Tan Q, Iachina M, Bathum L, Kruse TA, McGue M, Christensen K. Candidate gene polymorphisms in the serotonergic pathway: influence on depression symptomatology in an elderly population. Biol Psychiatry 2007; 61:223-30. [PMID: 16806099 DOI: 10.1016/j.biopsych.2006.03.046] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2005] [Revised: 03/28/2006] [Accepted: 03/31/2006] [Indexed: 11/15/2022]
Abstract
BACKGROUND Depressed mood is a major concern in the elderly, with consequences for morbidity and mortality. Previous studies have demonstrated that genetic factors in depression and subsyndromal depressive symptoms are no less important in the elderly than during other life stages. Variations in genes included in the serotonin system have been suggested as risk factors for various psychiatric disorders but may also serve as candidates for normal variations in mood. METHODS This study included 684 elderly Danish twins to investigate the influence of 11 polymorphisms in 7 serotonin system genes on the mean level of depression symptomatology assessed over several years, reflecting individuals' underlying mood level. RESULTS A suggestive association of sequence variations in genes responsible for the synthesis (TPH), recognition (5-HTR2A), and degradation (MAOA) of serotonin with depression symptomatology was found, although the effect was generally restricted to men. We also found that a specific haplotype in VMAT2, the gene encoding the vesicular monoamine transporter, was significantly associated with depression symptoms in men (p= .007). CONCLUSIONS These results suggest that variations in genes encoding the components of serotonin metabolism may influence the basic mood level and that different genetic factors may apply in men and women.
Collapse
Affiliation(s)
- Lene Christiansen
- Department of Epidemiology, Institute of Public Health, University of Southern Denmark, Odense, Denmark.
| | | | | | | | | | | | | |
Collapse
|
22
|
Kirsch P, Reuter M, Mier D, Lonsdorf T, Stark R, Gallhofer B, Vaitl D, Hennig J. Imaging gene–substance interactions: The effect of the DRD2 TaqIA polymorphism and the dopamine agonist bromocriptine on the brain activation during the anticipation of reward. Neurosci Lett 2006; 405:196-201. [PMID: 16901644 DOI: 10.1016/j.neulet.2006.07.030] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2006] [Revised: 06/29/2006] [Accepted: 07/06/2006] [Indexed: 12/22/2022]
Abstract
Dopamine is known as the main neurotransmitter modulating the activation of the reward system of the brain. The DRD2 TaqIA polymorphism is associated with dopamine D2 receptor density which plays an important role in the context of reward. Persons carrying an A1 allele have a lower D2 receptor density and a higher risk to show substance abuse. The present study was designed to investigate the influence of the DRD2 TaqIA polymorphism and the selective D2 receptor agonist bromociptine on the activation of the reward system by means of functional magnetic resonance imaging (fMRI). In a double-blind crossover study with 24 participants we found an increase of reward system activation from placebo to bromocriptine only in subjects carrying the A1 allele. Furthermore, only A1 carrier showed an increase of performance under bromocriptine. The results are interpreted as reflecting a specific sensitivity for dopamine agonists in persons carrying an A1 allele and may complement actual data and theories of the development of addiction disorders postulating a higher genetic risk for substance abuse in carrier of the A1 allele.
Collapse
Affiliation(s)
- Peter Kirsch
- Center for Psychiatry, Justus-Liebig-University Giessen, Am Steg 28, D-35385 Giessen, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Lerer E, Kanyas K, Karni O, Ebstein RP, Lerer B. Why do young women smoke? II. Role of traumatic life experience, psychological characteristics and serotonergic genes. Mol Psychiatry 2006; 11:771-81. [PMID: 16770336 DOI: 10.1038/sj.mp.4001855] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cigarette smoking is a complex behavioral phenotype to which environmental, psychological and genetic factors contribute. The purpose of this study was to investigate these multifactorial effects with a specific focus on young women and on genes that encode serotonin (5-HT) receptors and the 5-HT transporter. A case-control sample of female Israeli college students provided comprehensive background data and details of cigarette smoking and completed a battery of psychological instruments. They were divided into smoking initiators (SI, n=242) or non-initiators (NI, n=148); SI were further subdivided into high (HND, n=127) and low nicotine-dependent smokers (LND, n=115) on the basis of their scores on the Fagerstrom Tolerance Questionnaire (FTQ). Single-nucleotide polymorphisms (SNPs) in five serotonin receptor genes (HTR1A, HTR1B, HTR2A, HTR2C and HTR6) and the 5-HT transporter-linked polymorphic region (5-HTTLPR) were genotyped. In a logistic regression model for SI (chi2=117.90, P=1.6 x 10(-19), Nagelkerke R2=0.42), novelty seeking (odds ratio (OR)=1.134, P=0.00009) was a significant risk factor. A five SNP CACCC haplotype in HTR6 was a strong protective factor against SI (OR=0.26; P=0.007). The interaction of HTR6-C276T genotype and lifetime traumatic experience contributed strongly to the risk of SI (OR=13.88, P=0.0001). Specifically, subjects homozygous for the HTR6-C276T C allele showed significantly increased risk of SI if they had experienced trauma. Although significant (chi2=42.85, P=1.00 x 10(-7)), the best-fitting model for ND was less predictive than the model for SI (Nagelkerke R2=0.24). HTR1B-G861C GG genotype (OR=2.29, P=0.01) was a significant risk factor for HND. Further studies should consider the interactive contribution of life events and relevant gene variants to cigarette smoking and other complex behavioral traits.
Collapse
MESH Headings
- Adult
- Case-Control Studies
- Female
- Haplotypes
- Humans
- Israel/epidemiology
- Life Change Events
- Logistic Models
- Personality
- Polymorphism, Single Nucleotide
- Receptor, Serotonin, 5-HT1A/genetics
- Receptor, Serotonin, 5-HT1B/genetics
- Receptor, Serotonin, 5-HT2A/genetics
- Receptor, Serotonin, 5-HT2C/genetics
- Receptors, Serotonin/genetics
- Risk Factors
- Smoking/epidemiology
- Smoking/genetics
- Smoking/psychology
Collapse
Affiliation(s)
- E Lerer
- Research Laboratory, Sara Herzog Memorial Hospital, Jerusalem, Israel.
| | | | | | | | | |
Collapse
|
24
|
Tochigi M, Hibino H, Otowa T, Ohtani T, Ebisawa T, Kato N, Sasaki T. No association of 5-HT2C, 5-HT6, and tryptophan hydroxylase-1 gene polymorphisms with personality traits in the Japanese population. Neurosci Lett 2006; 403:100-2. [PMID: 16682118 DOI: 10.1016/j.neulet.2006.04.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 04/10/2006] [Accepted: 04/18/2006] [Indexed: 11/17/2022]
Abstract
Serotonin 2C receptor (5-HT(2C)), serotonin 6 receptor (5-HT(6)), and tryptophan hydroxylase-1 (TPH1) genes could be candidates for personality-related genes considering the role of serotonin in various mental functions and behavior. However, a limited number of studies have investigated the association between these genes and personality traits. In the present study, we investigated the three serotonin-related genes, 5-HT(2C), 5-HT(6), and TPH1 genes, in relation to personality traits in the Japanese population. The Cys23Ser polymorphisms in the 5-HT(2C) gene, the 267T/C polymorphism of the 5-HT(6) gene, and the 779A/C polymorphisms in the TPH1 gene were genotyped in 253 healthy Japanese subjects. Personality traits were evaluated by using the Revised NEO Personality Inventory (NEO PI-R) and the State-Trait Anxiety Inventory (STAI). As a result, no significant association was observed between the polymorphisms and the NEO PI-R or the STAI scores. The present results did not provide evidence for the association between the three serotonin-related genes and personality traits. The genes might not have major role in the development of personality traits, although further investigation with larger sample size may be recommended for conclusion.
Collapse
Affiliation(s)
- Mamoru Tochigi
- Department of Neuropsychiatry, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
25
|
Greenbaum L, Kanyas K, Karni O, Merbl Y, Olender T, Horowitz A, Yakir A, Lancet D, Ben-Asher E, Lerer B. Why do young women smoke? I. Direct and interactive effects of environment, psychological characteristics and nicotinic cholinergic receptor genes. Mol Psychiatry 2006; 11:312-22, 223. [PMID: 16314871 DOI: 10.1038/sj.mp.4001774] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Despite the health hazards, cigarette smoking is disproportionately frequent among young women. A significant contribution of genetic factors to smoking phenotypes is well established. Efforts to identify susceptibility genes do not generally take into account possible interaction with environment, life experience and psychological characteristics. We recruited 501 female Israeli students aged 20-30 years, obtained comprehensive background data and details of cigarette smoking and administered a battery of psychological instruments. Smoking initiators (n=242) were divided into subgroups with high (n=127) and low (n=115) levels of nicotine dependence based on their scores on the Fagerstrom Tolerance Questionnaire and genotyped with noninitiators (n=142) for single nucleotide polymorphisms (SNPs) in 11 nicotinic cholinergic receptor genes. We found nominally significant (P<0.05) allelic and genotypic association with smoking initiation of SNP rs2072660 and multilocus haplotypes (P<0.007-0.05) in CHRNB2 and nominal (P<0.05) allelic or genotypic association of SNPs in CHRNA7 (rs1909884), CHRNA9 (rs4861065) and CHRNB3 (rs9298629) with nicotine dependence. Employing logistic regression and controlling for known risk factors, the best-fitting model for smoking initiation encompassed a 5 SNP haplotype in CHRNB2, neuroticism and novelty seeking (P=5.9 x 10(-14), Nagelkerke r(2)=0.30). For severity of nicotine dependence, two SNPs in CHRNA7 (rs1909884 and rs883473), one SNP in CHRNA5 (rs680244) and the interaction of a SNP in CHRNA7 (rs2337980) with neuroticism, were included in the model (P=2.24 x 10(-7), Nagelkerke r(2)=0.40). These findings indicate that background factors, psychological characteristics and genetic variation in nicotinic cholinergic receptors contribute independently or interactively to smoking initiation and to severity of nicotine dependence in young women.
Collapse
Affiliation(s)
- L Greenbaum
- Biological Psychiatry Laboratory, Department of Psychiatry, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Reuter M, Hennig J. Association of the functional catechol-O-methyltransferase VAL158MET polymorphism with the personality trait of extraversion. Neuroreport 2006; 16:1135-8. [PMID: 15973162 DOI: 10.1097/00001756-200507130-00020] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Across different personality theories, there is agreement that dopamine is the neurochemical basis of extraversion. However, evidence from molecular genetics for the validity of this hypothesis is far from convincing. The functional polymorphism of the catechol-O-methyltransferase gene (COMT VAL158MET) has not been related to extraversion before, although it is a promising candidate gene locus for extraversion because of its great influence on the catabolism of dopamine. In a sample of n=363 healthy study participants, the catechol-O-methyltransferase VAL158MET polymorphism was related to extraversion and novelty seeking.Results showed a significant association between catechol-O-methyltransferase, extraversion and the subscale exploratory excitement (NS1) of novelty seeking but not with the total novelty-seeking scale supporting the psychometric analyses of the personality scales. The findings support the hypothesis that the dopamine system is involved in positive emotionality and incentive motivation, which has implications for the understanding of the neurochemical correlates of normal and psychopathological behaviors.
Collapse
Affiliation(s)
- Martin Reuter
- Department of Psychology, University of Giessen, Giessen, Germany.
| | | |
Collapse
|
27
|
Reuter M, Roth S, Holve K, Hennig J. Identification of first candidate genes for creativity: a pilot study. Brain Res 2006; 1069:190-7. [PMID: 16403463 DOI: 10.1016/j.brainres.2005.11.046] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2005] [Revised: 11/16/2005] [Accepted: 11/16/2005] [Indexed: 11/25/2022]
Abstract
Studies from behavioral genetics have demonstrated the high heritability of intelligence. However, the endeavor to detect the genes forming the molecular basis of intelligence has been rather unsuccessful until now. Pharmacological studies have demonstrated the influence of the dopaminergic (DA) and the serotonergic (5-HT) system on subcomponents of cognitive functioning, and first studies from molecular genetics have demonstrated that genes related to the DA metabolism are associated with mental abilities. However, candidate genes for creativity have not been identified so far. Therefore, the influence of the catechol-O-methyltransferase (locus: COMT VAL158MET) gene and the dopamine D2 receptor gene (locus: DRD2 TAQ IA) on creativity was tested in addition to a serotonergic gene, TPH1 (locus: TPH-A779C), in a sample of N = 92 healthy Caucasian subjects while controlling for intelligence. Results showed that the DRD2 gene and the TPH gene were both associated with total creativity, explaining 9% of the variance, while COMT was not related to creativity at all. With respect to the subcomponents, the A1+ allele of DRD2 was related to higher verbal creativity as compared to the A1- allele, and carriers of the A allele of TPH1 showed significantly higher scores in figural and in numeric creativity, indicating that the two gene loci discriminate between higher cortical functions according to the organization of cognitive functions in the respective hemispheres.
Collapse
Affiliation(s)
- Martin Reuter
- Department of Psychology, Justus-Liebig-University of Giessen, Otto-Behaghel-Str. 10F, D-35394 Giessen, Germany.
| | | | | | | |
Collapse
|
28
|
Abstract
Smoking is a complex behavior influenced by environ-mental and genetic factors. A number of twin studies demonstrate genetic influences on multiple aspects of smoking including initiation, dependence, continuation, amount consumed, and cessation. It is likely that this genetic risk involves a complex interaction between multiple genes in different biologic pathways. These may include genes involved in the general aspect of dependence (eg, genes within the dopaminergic system) and those more specific to nicotine dependence (eg, genes encoding nicotinic acetylcholine receptors and nicotine-metabolizing enzymes). Genome-wide linkage analyses and gene association studies provide approaches for identifying these genes. This review provides a brief highlight of data from some of the candidate gene association studies and discusses some of the discrepancies found in the literature. In addition, the authors have reviewed some recent studies examining how genetic variations in drug-metabolizing enzymes and drug targets can influence the response to treatment with drugs such as bupropion and nicotine.These latter studies provide the potential for maximizing treatment efficacy by individualizing the type, dosage, and duration of the treatment based on an individual's genotype/phenotype. Significant advances have been made in understanding the genetic contribution to smoking behaviors. These and future studies will provide potential directions for novel prevention and treatment strategies.
Collapse
Affiliation(s)
- Nael Al Koudsi
- Department of Pharmacology, Centre for Addiction and Mental Health, University of Toronto, Canada
| | | |
Collapse
|