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Mattioni J, Vansteene C, Poupon D, Gorwood P, Ramoz N. Associated and intermediate factors between genetic variants of the dopaminergic D2 receptor gene and harmful alcohol use in young adults. Addict Biol 2023; 28:e13269. [PMID: 36825486 PMCID: PMC10078472 DOI: 10.1111/adb.13269] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/08/2022] [Accepted: 01/11/2023] [Indexed: 02/10/2023]
Abstract
Dopamine receptor D2 (DRD2) and ankyrin repeat and kinase domain-containing protein 1 (ANKK1) genes have received considerable attention for their involvement in alcohol use disorder (AUD), but many questions remain on their exact role. We conducted a population-based case-control and genetic association study in a large sample of young adults. Our aim was to assess the association between DRD2 and ANKK1 single nucleotide polymorphisms (SNPs) and harmful alcohol use, disentangling associated and possible intermediate factors. A total of 1841 college students from the French region Champagne-Ardennes, aged between 18 and 21 years and who reported at least one lifetime alcohol consumption, were included in this study. Allele frequencies were analysed according to harmful alcohol use (assessed through the Alcohol Use Disorder Identification Test [AUDIT] questionnaire). Different substance use disorders, including nicotine and cannabis dependences, were also assessed through questionnaires, as was a list of potential associated factors (e.g., major depressive episode, conduct disorder, attention-deficit/hyperactivity disorder [ADHD], school failure, sugar consumption, sexual trauma, parents' use of alcohol, tobacco or cannabis). We found that DRD2 rs1800498 was associated with harmful alcohol use. Many factors were detected, but a global path analysis revealed that DRD2 rs1800498 had a significant direct effect on harmful alcohol use and that early age at first alcohol consumption and depressive symptoms moderated this effect. This study suggests an interplay between harmful alcohol use, DRD2 genotypes and other risk factors that, with a full understanding, could be useful for preventive purposes.
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Affiliation(s)
- Julia Mattioni
- Université Paris Cité, INSERM, U1266 (Institute of Psychiatry and Neuroscience of Paris), Paris, France.,CMME, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France
| | - Clément Vansteene
- CMME, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France
| | - Daphnee Poupon
- CMME, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France
| | - Philip Gorwood
- Université Paris Cité, INSERM, U1266 (Institute of Psychiatry and Neuroscience of Paris), Paris, France.,CMME, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Paris, France
| | - Nicolas Ramoz
- Université Paris Cité, INSERM, U1266 (Institute of Psychiatry and Neuroscience of Paris), Paris, France
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2
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DeGarmo DS, Gewirtz AH, Li L, Tavalire HF, Cicchetti D. The ADAPT Parenting Intervention Benefits Combat Exposed Fathers Genetically Susceptible to Problem Drinking. PREVENTION SCIENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR PREVENTION RESEARCH 2023; 24:150-160. [PMID: 36057024 DOI: 10.1007/s11121-022-01424-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2022] [Indexed: 02/03/2023]
Abstract
Testing a vantage sensitivity model from differential susceptibility theory (DST), we examined a G × E × I hypothesis; that is, whether a military parenting intervention program (I) might buffer a G × E susceptibility for military deployed fathers exposed to deployment combat stress and trauma. We hypothesized that combat stress (E, referring to the natural environmental factor) would lead to increases in problem drinking, and that the effect of problem drinking would be amplified by genetic predisposition (G) for drinking reward systems, substance use, and addictive behaviors (i.e., differential vulnerability). Providing a preventive intervention designed to improve post-deployment family environments (I, vantage sensitivity) is hypothesized to buffer the negative impacts of combat exposure and genetic susceptibility. The sample included 185 post-deployed military fathers who consented to genotyping, from a larger sample of 294 fathers enrolled in a randomized effectiveness trial of the After Deployment Adaptive Parenting Tools (ADAPT) intervention. Trauma-exposed military fathers at genetic susceptibility for problem drinking assigned to the ADAPT intervention reported significantly more reductions in risky drinking compared with fathers at genetic susceptibility assigned to the control group, with a small effect size for the G × E × I interaction (d = .2). Trial Registration. The ADAPT trial is registered at the US National Institutes of Health ( ClinicalTrials.gov ) # NCT03522610.
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Affiliation(s)
- David S DeGarmo
- Prevention Science Institute, University of Oregon, Eugene, USA
| | - Abigail H Gewirtz
- Department of Psychology, REACH Institute, Arizona State University, Tempe, USA.
| | - Lijun Li
- Department of Family Social Science, University of Minnesota-Twin Cities, Minneapolis, USA
| | | | - Dante Cicchetti
- Institute of Child Development, University of Minnesota-Twin Cities, Minneapolis, USA
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3
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Interaction Effects of DRD2 Genetic Polymorphism and Interpersonal Stress on Problematic Gaming in College Students. Genes (Basel) 2022; 13:genes13030449. [PMID: 35328003 PMCID: PMC8951734 DOI: 10.3390/genes13030449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/24/2022] [Accepted: 02/26/2022] [Indexed: 11/17/2022] Open
Abstract
Problematic gaming has become a public concern, influenced both by genetic factors and stressful environments. Studies have reported the effects of dopamine-related genes and interpersonal stressors on problematic gaming, but gene and environment interaction (G × E) studies have not been conducted. In this study, we investigated the interaction effects of dopamine receptor D2 (DRD2) polymorphisms and interpersonal stress on problematic gaming and the mediating effect of avoidant coping to reveal the mechanism of the G × E process. We recruited 168 college students (mean age = 22; male 63.1%) and genotyped their DRD2 C957T (rs6277) and Taq1 (rs1800497) polymorphisms. The results of the mediated moderation analysis showed that, when experiencing interpersonal stressors, individuals with both the C957T T allele and the Taq1 A1 allele showed more elevated problematic gaming scores than non-carriers. Moreover, the interaction effect of the combined DRD2 polymorphisms and interpersonal stress was significantly mediated by avoidant coping. These findings suggest that the influence of interpersonal stress on problematic gaming can be changed as a function of DRD2 genotypes, which may be because of the avoidant coping styles of C957T T allele and Taq1 A1 allele carriers in response to stress.
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4
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Picci G, Fishbein DH, VanMeter JW, Rose EJ. Effects of OPRM1 and DRD2 on brain structure in drug-naïve adolescents: Genetic and neural vulnerabilities to substance use. Psychopharmacology (Berl) 2022; 239:141-152. [PMID: 34816289 PMCID: PMC8776605 DOI: 10.1007/s00213-021-06030-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 11/15/2021] [Indexed: 01/03/2023]
Abstract
Genetic variants in the opioid receptor mu 1 (OPRM1) and dopamine receptor d2 (DRD2) genes are implicated in behavioral phenotypes related to substance use disorders (SUD). Despite associations among OPRM1 (rs179971) and DRD2 (rs6277) genes and structural alterations in neural reward pathways implicated in SUDs, little is known about the contribution of risk-related gene variants to structural neurodevelopment. In a 3-year longitudinal study of initially SU-naïve adolescents (N = 129; 70 females; 11-14 years old), participants underwent an MRI structural scan at baseline and provided genetic assays for OPRM1 and DRD2 with SU behavior assessed during follow-up visits. Baseline differences in key reward-related brain regions (i.e., bilateral caudate and cingulate cortex) were detected in those with genetic liability for SU in OPRM1 who went onto engage in SU at subsequent waves of data collection. In addition, main effects of OPRM1, DRD2, and SU were related to variability in structure of the putamen, anterior cingulate, and nucleus accumbens, respectively. These data provide preliminary evidence that genetic risk factors interact with future SU to confer structural variability prior to SU in regions commonly implicated in risk for SU and the development of SUDs.
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Affiliation(s)
- Giorgia Picci
- Institute for Human Neuroscience, Boys Town National Research Hospital, 378 Bucher Drive, Boys Town, NE, 68010, USA.
| | - Diana H Fishbein
- Department of Human Development and Family Studies, Program for Translational Research On Adversity and Neurodevelopment (P-TRAN), Edna Bennett Pierce Prevention Research Center, Penn State University, 218 Health and Human Development Building, University Park, PA, 16802, USA
| | - John W VanMeter
- Center for Functional and Molecular Imaging, Georgetown University Medical Center, 3900 Reservoir Road NW, Washington, DC, 20057, USA
| | - Emma J Rose
- Program for Translational Research On Adversity and Neurodevelopment (P-TRAN), Edna Bennett Pierce Prevention Research Center, Penn State University, 310A Biobehavioral Health Building, University Park, PA, 16802, USA
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5
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Klaus K, Vaht M, Pennington K, Harro J. Interactive effects of DRD2 rs6277 polymorphism, environment and sex on impulsivity in a population-representative study. Behav Brain Res 2021; 403:113131. [PMID: 33444693 DOI: 10.1016/j.bbr.2021.113131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 12/31/2020] [Accepted: 01/07/2021] [Indexed: 11/17/2022]
Abstract
Previous research has shown that dopaminergic dysregulation and early life stress interact to impact on aspects of impulse control. This study aimed to explore the potentially interactive effects of the rs6277 polymorphism of the dopamine D2 receptor gene (DRD2), stressful or supportive environment and sex on behavioural and self-reported measures of impulsivity, as well as alcohol use - a condition characterised by a deficit in impulse control. The sample consisted of the younger cohort (n = 583) of the longitudinal Estonian Children Personality, Behaviour and Health Study. The results showed that the CC homozygotes (suggested to have decreased striatal D2 receptor availability) who had experienced stressful life events (SLE) or maltreatment in the family prior to age 15 showed higher self-reported maladaptive impulsivity at age 15. The genotype-SLE interaction and further association with sex was also evident in the frequency of alcohol use at age 15. Lack of warmth in the family contributed to significantly higher levels of thoughtlessness and more frequent alcohol use in CC carriers at age 25, whereas family support was associated with lower thoughtlessness scores in CC males, which may suggest a protective effect of supportive family environment in this group. Together the findings suggest that DRD2 rs6277 polymorphism, in interaction with environmental factors experienced in childhood and youth may affect facets of impulsivity. Future work should aim to further clarify the sex and age-specific effects of stressful and supportive environment on the development of neuronal systems that are compromised in disorders characterised by deficits in impulse control.
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Affiliation(s)
- K Klaus
- School of Psychology, University of Lincoln, Brayford Wharf, Lincoln, LN5 7AT, England, UK; MRC Cognition and Brain Sciences Unit, University of Cambridge, 15 Chaucer Road, Cambridge, CB3 0HH, England, UK.
| | - M Vaht
- Estonian Genome Centre, Institute of Genomics, University of Tartu, Riia 23b, 51010, Tartu, Estonia
| | - K Pennington
- School of Psychology, University of Lincoln, Brayford Wharf, Lincoln, LN5 7AT, England, UK
| | - J Harro
- Faculty of Science and Technology, Institute of Chemistry, University of Tartu, Ravila 14A, 50411, Tartu, Estonia
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6
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Li X, Bäckman L, Persson J. The relationship of age and DRD2 polymorphisms to frontostriatal brain activity and working memory performance. Neurobiol Aging 2019; 84:189-199. [PMID: 31629117 DOI: 10.1016/j.neurobiolaging.2019.08.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 08/08/2019] [Accepted: 08/24/2019] [Indexed: 11/26/2022]
Abstract
Dopamine (DA) in both prefrontal cortex (PFC) and caudate nucleus is critical for working memory (WM) function. The C957T and Taq1A polymorphisms of the DRD2 gene are related to DA D2 receptor densities in PFC and striatum. Using functional MRI, we investigated the relationship of age and these 2 DRD2 gene polymorphisms to WM function and examined possible age by gene interactions. Results demonstrated less caudate activity for older adults (70-80 years; n = 112) compared with the younger age group (25-65 years; n = 191), suggesting age-related functional differences in this region. Importantly, there was a gene-related difference regarding WM performance and frontostriatal brain activity. Specifically, better WM performance and greater activity in PFC were found among C957T C allele carriers. Combined genetic markers for increased DA D2 receptor density were associated with greater caudate activity and higher WM updating performance. The genetic effects on blood oxygen level-dependent activity were only observed in older participants, suggesting magnified genetic effects in aging. Our findings emphasize the importance of DA-related genes in regulating WM functioning in aging and demonstrate a positive link between DA and brain activation in the frontostriatal circuitry.
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Affiliation(s)
- Xin Li
- Aging Research Center, Karolinska Institute and Stockholm University, Stockholm, Sweden.
| | - Lars Bäckman
- Aging Research Center, Karolinska Institute and Stockholm University, Stockholm, Sweden
| | - Jonas Persson
- Aging Research Center, Karolinska Institute and Stockholm University, Stockholm, Sweden
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7
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Park JY, Lengacher CA, Reich RR, Alinat CB, Ramesar S, Le A, Paterson CL, Pleasant ML, Park HY, Kiluk J, Han H, Ismail-Khan R, Kip KE. Translational genomic research: the role of genetic polymorphisms in MBSR program among breast cancer survivors (MBSR[BC]). Transl Behav Med 2019; 9:693-702. [PMID: 30137607 DOI: 10.1093/tbm/iby061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Genetic variations of breast cancer survivors (BCS) may contribute to level of residual symptoms, such as depression, stress, fatigue, and cognitive impairment. The objective of this study was to investigate whether particular single-nucleotide polymorphisms (SNPs) moderated symptom improvement resulting from the Mindfulness-Based Stress Reduction for Breast Cancer (MBSR[BC]) program. An overarching goal of personalized medicine is to identify individuals as risk for disease and tailor interventions based on genetic profiles of patients with diseases including cancer. BCS were recruited from Moffitt Cancer Center and University of South Florida's Breast Health Program and were randomized to either the 6-week MBSR(BC) program (n = 92) or Usual Care (n = 93). Measures of symptoms, demographic, and clinical history data were attained at baseline, 6 weeks, and 12 weeks. A total of 10 SNPs from eight genes known to be related to these symptoms were studied using genomic DNA extracted from blood. Our results were examined for effect sizes, consistency, and statistical significance (p < .05). Three SNPs (rs4680 in COMT, rs6314 in HTR2A, and rs429358 in APOE) emerged as having the strongest (though relatively weak) and most consistent effects in moderating the impact of the MBSR program on symptom outcomes. Although effects were generally weak, with only one effect withstanding multiple comparisons correction for statistical significance, this translational behavioral research may help start the identification of genetic profiles that moderate the impact of MBSR(BC). The ultimate goal of this study is the development of personalized treatment programs tailored to the genetic profile of each patient.
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Affiliation(s)
- Jong Y Park
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | | | - Richard R Reich
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | | | - Sophia Ramesar
- University of South Florida College of Nursing, Tampa, FL, USA
| | - Alice Le
- University of South Florida College of Nursing, Tampa, FL, USA
| | - Carly L Paterson
- National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | | | - Hyun Y Park
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - John Kiluk
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Hyo Han
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Roohi Ismail-Khan
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Kevin E Kip
- Department of Epidemiology and Biostatistics, University of South Florida, College of Public Health, Tampa, FL, USA
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8
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Ning Y, Tan CS, Maraki A, Ho PJ, Hodgins S, Comasco E, Nilsson KW, Wagner P, Khoo EY, Tai ES, Kao SL, Hartman M, Reilly M, Støer NC. Handling ties in continuous outcomes for confounder adjustment with rank-ordered logit and its application to ordinal outcomes. Stat Methods Med Res 2019; 29:437-454. [PMID: 30943882 DOI: 10.1177/0962280219837656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The rank-ordered logit (rologit) model was recently introduced as a robust approach for analysing continuous outcomes, with the linear exposure effect estimated by scaling the rank-based log-odds estimate. Here we extend the application of the rologit model to continuous outcomes with ties and ordinal outcomes treated as imperfectly-observed continuous outcomes. By identifying the functional relationship between survival times and continuous outcomes, we explicitly establish the equivalence between the rologit and Cox models to justify the use of the Breslow, Efron and perturbation methods in the analysis of continuous outcomes with ties. Using simulation, we found all three methods perform well with few ties. Although an increasing extent of ties increased the bias of the log-odds and linear effect estimates and resulted in reduced power, which was somewhat worse when the model was mis-specified, the perturbation method maintained a type I error around 5%, while the Efron method became conservative with heavy ties but outperformed Breslow. In general, the perturbation method had the highest power, followed by the Efron and then the Breslow method. We applied our approach to three real-life datasets, demonstrating a seamless analytical workflow that uses stratification for confounder adjustment in studies of continuous and ordinal outcomes.
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Affiliation(s)
- Yilin Ning
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore.,Yong Loo Lin School of Medicine, Department of Surgery, National University of Singapore and National University Health System, Singapore
| | - Chuen Seng Tan
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Angeliki Maraki
- Department of Mathematics, Stockholm University, Stockholm, Sweden
| | - Peh Joo Ho
- Saw Swee Hock School of Public Health, National University of Singapore and National University Health System, Singapore
| | - Sheilagh Hodgins
- Institut Universitaire en Santé Mentale de Montréal, et Département de Psychiatrie et Addictologie, Université de Montréal, Montréal, Canada.,Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Erika Comasco
- Science for Life Laboratory, Department of Neuroscience, Uppsala University, Uppsala, Sweden
| | - Kent W Nilsson
- Centre for Clinical Research, Uppsala University, Västmanland County Hospital, Västerås, Sweden
| | - Philippe Wagner
- Centre for Clinical Research, Uppsala University, Västmanland County Hospital, Västerås, Sweden
| | - Eric Yh Khoo
- Yong Loo Lin School of Medicine, Department of Medicine, National University of Singapore and National University Health System, Singapore.,University Medicine Cluster, Division of Endocrinology, National University Health System, Singapore
| | - E-Shyong Tai
- Yong Loo Lin School of Medicine, Department of Medicine, National University of Singapore and National University Health System, Singapore.,University Medicine Cluster, Division of Endocrinology, National University Health System, Singapore
| | - Shih Ling Kao
- Yong Loo Lin School of Medicine, Department of Medicine, National University of Singapore and National University Health System, Singapore.,University Medicine Cluster, Division of Endocrinology, National University Health System, Singapore
| | - Mikael Hartman
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore.,Yong Loo Lin School of Medicine, Department of Surgery, National University of Singapore and National University Health System, Singapore
| | - Marie Reilly
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Nathalie C Støer
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Norwegian National Advisory Unit on Women's Health, Oslo University Hospital, Oslo, Norway
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9
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Karalija N, Papenberg G, Wåhlin A, Johansson J, Andersson M, Axelsson J, Riklund K, Lövdén M, Lindenberger U, Bäckman L, Nyberg L. C957T-mediated Variation in Ligand Affinity Affects the Association between 11C-raclopride Binding Potential and Cognition. J Cogn Neurosci 2019; 31:314-325. [DOI: 10.1162/jocn_a_01354] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The dopamine (DA) system plays an important role in cognition. Accordingly, normal variation in DA genes has been found to predict individual differences in cognitive performance. However, little is known of the impact of genetic differences on the link between empirical indicators of the DA system and cognition in humans. The present work used PET with 11C-raclopride to assess DA D2-receptor binding potential (BP) and links to episodic memory, working memory, and perceptual speed in 179 healthy adults aged 64–68 years. Previously, the T-allele of a DA D2-receptor single-nucleotide polymorphism, C957T, was associated with increased apparent affinity of 11C-raclopride, giving rise to higher BP values despite similar receptor density values between allelic groups. Consequently, we hypothesized that 11C-raclopride BP measures inflated by affinity rather than D2-receptor density in T-allele carriers would not be predictive of DA integrity and therefore prevent finding an association between 11C-raclopride BP and cognitive performance. In accordance with previous findings, we show that 11C-raclopride BP was increased in T-homozygotes. Importantly, 11C-raclopride BP was only associated with cognitive performance in groups with low or average ligand affinity (C-allele carriers of C957T, n = 124), but not in the high-affinity group (T-homozygotes, n = 55). The strongest 11C-raclopride BP–cognition associations and the highest level of performance were found in C-homozygotes. These findings show that genetic differences modulate the link between BP and cognition and thus have important implications for the interpretation of DA assessments with PET and 11C-raclopride in multiple disciplines ranging from cognitive neuroscience to psychiatry and neurology.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Ulman Lindenberger
- Max Planck Institute for Human Development
- Max Planck UCL Centre for Computational Psychiatry and Ageing Research
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10
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Vizeli P, Liechti ME. No Influence of Dopamine System Gene Variations on Acute Effects of MDMA. Front Psychiatry 2019; 10:755. [PMID: 31708815 PMCID: PMC6821788 DOI: 10.3389/fpsyt.2019.00755] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/19/2019] [Indexed: 12/31/2022] Open
Abstract
3,4-Methylenedioxymethamphetamine (MDMA, ecstasy) is a recreational substance also investigated as medication for posttraumatic stress disorder. Dopamine (DA) system stimulation likely contributes to the acute mood effects of amphetamines, including MDMA. Genetic variants, such as single-nucleotide polymorphisms (SNPs), and polymorphic regions of the DA system genes may in part explain interindividual differences in the acute responses to MDMA in humans. We characterized the effects of common genetic variants within genes coding for key players in the DA system including the dopamine D2 receptor (DRD2/ANKK1 rs1800497, DRD2 rs6277, and rs107959), the dopamine transporter (DAT1 rs28363170, rs3836790, rs6347, rs11133767, rs11564774, rs460000, and rs463379), and dopamine D4 receptor [DRD4, variable-number tandem repeat (VNTR)] on the subjective and autonomic response to MDMA (125 mg) in pooled data from randomized, placebo-controlled, crossover studies in a total of 149 healthy subjects. Plasma concentrations of MDMA were used as covariate in the analysis to control for individual pharmacokinetic (metabolic and weight) differences. None of the tested genetic polymorphisms within the DA system altered effects of MDMA when adjusting for multiple comparisons. Genetic variations in genes coding for players of the DA system are unlikely to explain interindividual variations in the acute effects of MDMA in humans.
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Affiliation(s)
- Patrick Vizeli
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Basel, Switzerland
| | - Matthias E Liechti
- Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Basel, Switzerland
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11
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McDonell KE, van Wouwe NC, Harrison MB, Wylie SA, Claassen DO. Taq1A polymorphism and medication effects on inhibitory action control in Parkinson disease. Brain Behav 2018; 8:e01008. [PMID: 29856137 PMCID: PMC6043698 DOI: 10.1002/brb3.1008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/06/2018] [Accepted: 04/15/2018] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Dopamine therapy in Parkinson disease (PD) can have differential effects on inhibitory action control, or the ability to inhibit reflexive or impulsive actions. Dopamine agonist (DAAg) medications, which preferentially target D2 and D3 receptors, can either improve or worsen control of impulsive actions in patients with PD. We have reported that the direction of this effect depends on baseline levels of performance on inhibitory control tasks. This observation suggests that there may exist certain biologic determinants that contribute to these patient-specific differences. We hypothesized that one important factor might be functional polymorphisms in D2-like receptor genes. AIM The goal of this study was to determine whether the direction of DAAg effects on inhibitory control depends on functional polymorphisms in the DRD2 and DRD3 genes. METHODS Twenty-eight patients with PD were genotyped for known functional polymorphisms in DRD2 (rs6277 and rs1800497) and DRD3 (rs6280) receptors. These patients then completed the Simon conflict task both on and off DAAg therapy in a counterbalanced manner. RESULTS We found that patients with the rs1800497 Taq1A (A1) polymorphism (A1/A1 or A1/A2: 11 subjects) showed improved proficiency to suppress impulsive actions when on DAAg; conversely, patients with the A2/A2 allele (14 patients) became less proficient at suppressing incorrect response information on DAAg therapy (Group × Medication, F(1, 23) = 5.65, p < 0.05). Polymorphisms in rs6277 and rs6280 were not associated with a differential medication response. CONCLUSION These results suggest that certain DRD polymorphisms may determine the direction of DAAg effects on critical cognitive control processes impaired in PD. Our findings have implications for understanding pharmacogenomics interactions on a larger scale and the role these may play in the wide variability of treatment effects seen in the PD population.
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Affiliation(s)
| | | | | | - Scott A. Wylie
- Department of NeurosurgeryUniversity of LouisvilleLouisvilleKYUnited States
| | - Daniel O. Claassen
- Department of NeurologyVanderbilt University Medical CenterNashvilleTennessee
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12
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Richter A, Barman A, Wüstenberg T, Soch J, Schanze D, Deibele A, Behnisch G, Assmann A, Klein M, Zenker M, Seidenbecher C, Schott BH. Behavioral and Neural Manifestations of Reward Memory in Carriers of Low-Expressing versus High-Expressing Genetic Variants of the Dopamine D2 Receptor. Front Psychol 2017; 8:654. [PMID: 28507526 PMCID: PMC5410587 DOI: 10.3389/fpsyg.2017.00654] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 04/12/2017] [Indexed: 12/13/2022] Open
Abstract
Dopamine is critically important in the neural manifestation of motivated behavior, and alterations in the human dopaminergic system have been implicated in the etiology of motivation-related psychiatric disorders, most prominently addiction. Patients with chronic addiction exhibit reduced dopamine D2 receptor (DRD2) availability in the striatum, and the DRD2 TaqIA (rs1800497) and C957T (rs6277) genetic polymorphisms have previously been linked to individual differences in striatal dopamine metabolism and clinical risk for alcohol and nicotine dependence. Here, we investigated the hypothesis that the variants of these polymorphisms would show increased reward-related memory formation, which has previously been shown to jointly engage the mesolimbic dopaminergic system and the hippocampus, as a potential intermediate phenotype for addiction memory. To this end, we performed functional magnetic resonance imaging (fMRI) in 62 young, healthy individuals genotyped for DRD2 TaqIA and C957T variants. Participants performed an incentive delay task, followed by a recognition memory task 24 h later. We observed effects of both genotypes on the overall recognition performance with carriers of low-expressing variants, namely TaqIA A1 carriers and C957T C homozygotes, showing better performance than the other genotype groups. In addition to the better memory performance, C957T C homozygotes also exhibited a response bias for cues predicting monetary reward. At the neural level, the C957T polymorphism was associated with a genotype-related modulation of right hippocampal and striatal fMRI responses predictive of subsequent recognition confidence for reward-predicting items. Our results indicate that genetic variations associated with DRD2 expression affect explicit memory, specifically for rewarded stimuli. We suggest that the relatively better memory for rewarded stimuli in carriers of low-expressing DRD2 variants may reflect an intermediate phenotype of addiction memory.
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Affiliation(s)
- Anni Richter
- Leibniz Institute for NeurobiologyMagdeburg, Germany
| | | | - Torsten Wüstenberg
- Department of Psychiatry and Psychotherapy, Charité University HospitalBerlin, Germany
| | - Joram Soch
- Leibniz Institute for NeurobiologyMagdeburg, Germany
| | - Denny Schanze
- Institute of Human Genetics, Otto von Guericke UniversityMagdeburg, Germany
| | - Anna Deibele
- Leibniz Institute for NeurobiologyMagdeburg, Germany
| | | | - Anne Assmann
- Leibniz Institute for NeurobiologyMagdeburg, Germany.,Department of Neurology, University of MagdeburgMagdeburg, Germany
| | - Marieke Klein
- Leibniz Institute for NeurobiologyMagdeburg, Germany
| | - Martin Zenker
- Institute of Human Genetics, Otto von Guericke UniversityMagdeburg, Germany
| | - Constanze Seidenbecher
- Leibniz Institute for NeurobiologyMagdeburg, Germany.,Center for Behavioral Brain SciencesMagdeburg, Germany
| | - Björn H Schott
- Leibniz Institute for NeurobiologyMagdeburg, Germany.,Department of Psychiatry and Psychotherapy, Charité University HospitalBerlin, Germany.,Department of Neurology, University of MagdeburgMagdeburg, Germany.,Center for Behavioral Brain SciencesMagdeburg, Germany
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13
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Smith CT, Dang LC, Buckholtz JW, Tetreault AM, Cowan RL, Kessler RM, Zald DH. The impact of common dopamine D2 receptor gene polymorphisms on D2/3 receptor availability: C957T as a key determinant in putamen and ventral striatum. Transl Psychiatry 2017; 7:e1091. [PMID: 28398340 PMCID: PMC5416688 DOI: 10.1038/tp.2017.45] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 12/02/2016] [Accepted: 01/17/2017] [Indexed: 12/20/2022] Open
Abstract
Dopamine function is broadly implicated in multiple neuropsychiatric conditions believed to have a genetic basis. Although a few positron emission tomography (PET) studies have investigated the impact of single-nucleotide polymorphisms (SNPs) in the dopamine D2 receptor gene (DRD2) on D2/3 receptor availability (binding potential, BPND), these studies have often been limited by small sample size. Furthermore, the most commonly studied SNP in D2/3 BPND (Taq1A) is not located in the DRD2 gene itself, suggesting that its linkage with other DRD2 SNPs may explain previous PET findings. Here, in the largest PET genetic study to date (n=84), we tested for effects of the C957T and -141C Ins/Del SNPs (located within DRD2) as well as Taq1A on BPND of the high-affinity D2 receptor tracer 18F-Fallypride. In a whole-brain voxelwise analysis, we found a positive linear effect of C957T T allele status on striatal BPND bilaterally. The multilocus genetic scores containing C957T and one or both of the other SNPs produced qualitatively similar striatal results to C957T alone. The number of C957T T alleles predicted BPND in anatomically defined putamen and ventral striatum (but not caudate) regions of interest, suggesting some regional specificity of effects in the striatum. By contrast, no significant effects arose in cortical regions. Taken together, our data support the critical role of C957T in striatal D2/3 receptor availability. This work has implications for a number of psychiatric conditions in which dopamine signaling and variation in C957T status have been implicated, including schizophrenia and substance use disorders.
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Affiliation(s)
- C T Smith
- Department of Psychology, Vanderbilt University, Nashville, TN, USA,Department of Psychology, Vanderbilt University, PMB 407817, 2301 Vanderbilt Place, Nashville, TN 37240-7817, USA. E-mail:
| | - L C Dang
- Department of Psychology, Vanderbilt University, Nashville, TN, USA
| | - J W Buckholtz
- Department of Psychology, Harvard University, Cambridge, MA, USA,Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA
| | - A M Tetreault
- Department of Psychology, Vanderbilt University, Nashville, TN, USA
| | - R L Cowan
- Department of Psychology, Vanderbilt University, Nashville, TN, USA,Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - R M Kessler
- Department of Radiology, UAB School of Medicine, Birmingham, AL, USA
| | - D H Zald
- Department of Psychology, Vanderbilt University, Nashville, TN, USA,Department of Psychiatry, Vanderbilt University School of Medicine, Nashville, TN, USA
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14
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Yue JK, Winkler EA, Rick JW, Burke JF, McAllister TW, Oh SS, Burchard EG, Hu D, Rosand J, Temkin NR, Korley FK, Sorani MD, Ferguson AR, Lingsma HF, Sharma S, Robinson CK, Yuh EL, Tarapore PE, Wang KKW, Puccio AM, Mukherjee P, Diaz-Arrastia R, Gordon WA, Valadka AB, Okonkwo DO, Manley GT. DRD2 C957T polymorphism is associated with improved 6-month verbal learning following traumatic brain injury. Neurogenetics 2016; 18:29-38. [PMID: 27826691 DOI: 10.1007/s10048-016-0500-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 10/19/2016] [Accepted: 10/21/2016] [Indexed: 11/29/2022]
Abstract
Traumatic brain injury (TBI) often leads to heterogeneous clinical outcomes, which may be influenced by genetic variation. A single-nucleotide polymorphism (SNP) in the dopamine D2 receptor (DRD2) may influence cognitive deficits following TBI. However, part of the association with DRD2 has been attributed to genetic variability within the adjacent ankyrin repeat and kinase domain containing 1 protein (ANKK1). Here, we utilize the Transforming Research and Clinical Knowledge in Traumatic Brain Injury Pilot (TRACK-TBI Pilot) study to investigate whether a novel DRD2 C957T polymorphism (rs6277) influences outcome on a cognitive battery at 6 months following TBI-California Verbal Learning Test (CVLT-II), Wechsler Adult Intelligence Test Processing Speed Index Composite Score (WAIS-PSI), and Trail Making Test (TMT). Results in 128 Caucasian subjects show that the rs6277 T-allele associates with better verbal learning and recall on CVLT-II Trials 1-5 (T-allele carrier 52.8 ± 1.3 points, C/C 47.9 ± 1.7 points; mean increase 4.9 points, 95% confidence interval [0.9 to 8.8]; p = 0.018), Short-Delay Free Recall (T-carrier 10.9 ± 0.4 points, C/C 9.7 ± 0.5 points; mean increase 1.2 points [0.1 to 2.5]; p = 0.046), and Long-Delay Free Recall (T-carrier 11.5 ± 0.4 points, C/C 10.2 ± 0.5 points; mean increase 1.3 points [0.1 to 2.5]; p = 0.041) after adjusting for age, education years, Glasgow Coma Scale, presence of acute intracranial pathology on head computed tomography scan, and genotype of the ANKK1 SNP rs1800497 using multivariable regression. No association was found between DRD2 C947T and non-verbal processing speed (WAIS-PSI) or mental flexibility (TMT) at 6 months. Hence, DRD2 C947T (rs6277) may be associated with better performance on select cognitive domains independent of ANKK1 following TBI.
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Affiliation(s)
- John K Yue
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Ethan A Winkler
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Jonathan W Rick
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - John F Burke
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Thomas W McAllister
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sam S Oh
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Esteban G Burchard
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Donglei Hu
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Jonathan Rosand
- Department of Neurology, Harvard Medical School, Boston, MA, USA.,Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Nancy R Temkin
- Department of Neurological Surgery and Biostatistics, University of Washington, Seattle, WA, USA
| | - Frederick K Korley
- Department of Emergency Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Marco D Sorani
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Adam R Ferguson
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Hester F Lingsma
- Department of Public Health, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Sourabh Sharma
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Caitlin K Robinson
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Esther L Yuh
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Department of Radiology, University of California, San Francisco, San Francisco, CA, USA
| | - Phiroz E Tarapore
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA
| | - Kevin K W Wang
- Center for Neuroproteomics and Biomarkers Research, Department of Psychiatry and Neuroscience, University of Florida, Gainesville, FL, USA
| | - Ava M Puccio
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Pratik Mukherjee
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA.,Department of Radiology, University of California, San Francisco, San Francisco, CA, USA
| | - Ramon Diaz-Arrastia
- Department of Neurology, Uniformed Services University of the Health Sciences, Bethesda, MD, USA.,Center for Neuroscience and Regenerative Medicine, Bethesda, MD, USA
| | - Wayne A Gordon
- Department of Rehabilitation Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alex B Valadka
- Department of Neurological Surgery, Virginia Commonwealth University, Richmond, VA, USA
| | - David O Okonkwo
- Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Geoffrey T Manley
- Department of Neurological Surgery, University of California, San Francisco, 1001 Potrero Avenue, Building 1, Room 101, San Francisco, CA, 94110, USA. .,Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA.
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15
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Levran O, Peles E, Randesi M, Correa da Rosa J, Ott J, Rotrosen J, Adelson M, Kreek MJ. Dopaminergic pathway polymorphisms and heroin addiction: further support for association of CSNK1E variants. Pharmacogenomics 2015; 15:2001-9. [PMID: 25521358 DOI: 10.2217/pgs.14.145] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND & AIM The dopaminergic pathways have been implicated in the etiology of drug addictions. The aim of this study was to determine if variants in dopaminergic genes are associated with heroin addiction. MATERIALS & METHODS The study includes 828 former heroin addicts and 232 healthy controls, of predominantly European ancestry. Ninety seven SNPs (13 genes) were analyzed. RESULTS Nine nominally significant associations were observed at CSNK1E, ANKK1, DRD2 and DRD3. CONCLUSION The results support our previous report of association of CSNK1E SNP rs1534891 with protection from heroin addiction. CSNK1E interacts with circadian rhythms and DARPP-32 and has been implicated in negative regulation of sensitivity to opioids in rodents. It may be a target for drug addiction treatment. Original submitted 8 August 2014; Revision submitted 8 October 2014.
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Affiliation(s)
- Orna Levran
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, New York, NY 10065, USA
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16
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Lengacher CA, Reich RR, Kip KE, Paterson CL, Park HY, Ramesar S, Jim HSL, Alinat CB, Park JY. Moderating Effects of Genetic Polymorphisms on Improvements in Cognitive Impairment in Breast Cancer Survivors Participating in a 6-Week Mindfulness-Based Stress Reduction Program. Biol Res Nurs 2015; 17:393-404. [PMID: 25882604 PMCID: PMC10131135 DOI: 10.1177/1099800415577633] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Breast cancer (BC) survivors often report cognitive impairment, which may be influenced by single-nucleotide polymorphisms (SNPs). The purpose of this study was to test whether particular SNPs were associated with changes in cognitive function in BC survivors and whether these polymorphisms moderated cognitive improvement resulting from the Mindfulness-Based Stress Reduction for Breast Cancer (MBSR[BC]) program. BC survivors recruited from Moffitt Cancer Center and the University of South Florida's Breast Health Program, who had completed adjuvant radiation and/or chemotherapy treatment, were randomized to either the 6-week MBSR(BC) program (n = 37) or usual care (UC; n = 35) group. Measures of cognitive function and demographic and clinical history data were attained at baseline and at 6 and 12 weeks. A total of 10 SNPs from eight genes known to be related to cognitive function were analyzed using blood samples. Results showed that SNPs in four genes (ankyrin repeat and kinase domain containing 1 [ANKK1], apolipoprotein E [APOE], methylenetetrahydrofolate reductase [MTHFR], and solute carrier family 6 member 4 [SLC6A4]) were associated with cognitive impairment. Further, rs1800497 in ANKK1 was significantly associated with improvements in cognitive impairment in response to MBSR(BC). These results may help to identify individuals who would be better served by MBSR(BC) or other interventions.
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Affiliation(s)
- Cecile A Lengacher
- College of Nursing, University of South Florida, Tampa, FL, USA Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, FL, USA
| | - Richard R Reich
- College of Arts and Sciences, University of South Florida Sarasota-Manatee, Sarasota, FL, USA Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
| | - Kevin E Kip
- College of Nursing, University of South Florida, Tampa, FL, USA
| | | | - Hyun Y Park
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, FL, USA
| | - Sophia Ramesar
- College of Nursing, University of South Florida, Tampa, FL, USA
| | - Heather S L Jim
- Department of Health Outcomes and Behavior, Moffitt Cancer Center, Tampa, FL, USA
| | | | - Jong Y Park
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, FL, USA
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17
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Dopamine and cognitive control: Sex-by-genotype interactions influence the capacity to switch attention. Behav Brain Res 2015; 281:96-101. [DOI: 10.1016/j.bbr.2014.11.045] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 11/24/2014] [Accepted: 11/29/2014] [Indexed: 12/20/2022]
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18
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Progress towards understanding the genetics of posttraumatic stress disorder. J Anxiety Disord 2014; 28:873-83. [PMID: 25445077 DOI: 10.1016/j.janxdis.2014.09.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 09/16/2014] [Indexed: 01/12/2023]
Abstract
Posttraumatic stress disorder (PTSD) is a complex syndrome that occurs following exposure to a potentially life threatening traumatic event. This review summarises the literature on the genetics of PTSD including gene-environment interactions (GxE), epigenetics and genetics of treatment response. Numerous genes have been shown to be associated with PTSD using candidate gene approaches. Genome-wide association studies have been limited due to the large sample size required to reach statistical power. Studies have shown that GxE interactions are important for PTSD susceptibility. Epigenetics plays an important role in PTSD susceptibility and some of the most promising studies show stress and child abuse trigger epigenetic changes. Much of the molecular genetics of PTSD remains to be elucidated. However, it is clear that identifying genetic markers and environmental triggers has the potential to advance early PTSD diagnosis and therapeutic interventions and ultimately ease the personal and financial burden of this debilitating disorder.
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19
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Ma Y, Yuan W, Jiang X, Cui WY, Li MD. Updated findings of the association and functional studies of DRD2/ANKK1 variants with addictions. Mol Neurobiol 2014; 51:281-99. [PMID: 25139281 DOI: 10.1007/s12035-014-8826-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 06/01/2014] [Indexed: 02/06/2023]
Abstract
Both nicotine and alcohol addictions are severe public health hazards worldwide. Various twin and family studies have demonstrated that genetic factors contribute to vulnerability to these addictions; however, the susceptibility genes and the variants underlying them remain largely unknown. Of susceptibility genes investigated for addictions, DRD2 has received much attention. Considering new evidence supporting the association of DRD2 and its adjacent gene ankyrin repeat and kinase domain containing 1 (ANKK1) with various addictions, in this paper, we provide an updated view of the involvement of variants in DRD2 and ANKK1 in the etiology of nicotine dependence (ND) and alcohol dependence (AD) based on linkage, association, and molecular studies. This evidence shows that both genes are significantly associated with addictions; however the association with ANKK1 appears to be stronger. Thus, both more replication studies in independent samples and functional studies of some of these variants are warranted.
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Affiliation(s)
- Yunlong Ma
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University School of Medicine, Hangzhou, China
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20
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Guigas B, de Leeuw van Weenen JE, van Leeuwen N, Simonis-Bik AM, van Haeften TW, Nijpels G, Houwing-Duistermaat JJ, Beekman M, Deelen J, Havekes LM, Penninx BWJH, Vogelzangs N, van 't Riet E, Dehghan A, Hofman A, Witteman JC, Uitterlinden AG, Grarup N, Jørgensen T, Witte DR, Lauritzen T, Hansen T, Pedersen O, Hottenga J, Romijn JA, Diamant M, Kramer MHH, Heine RJ, Willemsen G, Dekker JM, Eekhoff EM, Pijl H, de Geus EJ, Slagboom PE, 't Hart LM. Sex-specific effects of naturally occurring variants in the dopamine receptor D2 locus on insulin secretion and type 2 diabetes susceptibility. Diabet Med 2014; 31:1001-8. [PMID: 24724616 DOI: 10.1111/dme.12464] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 01/13/2014] [Accepted: 04/08/2014] [Indexed: 12/21/2022]
Abstract
AIMS Modulation of dopamine receptor D2 (DRD2) activity affects insulin secretion in both rodents and isolated pancreatic β-cells. We hypothesized that single nucleotide polymorphisms in the DRD2/ANKK1 locus may affect susceptibility to type 2 diabetes in humans. METHODS Four potentially functional variants in the coding region of the DRD2/ANKK1 locus (rs1079597, rs6275, rs6277, rs1800497) were genotyped and analysed for type 2 diabetes susceptibility in up to 25 000 people (8148 with type 2 diabetes and 17687 control subjects) from two large independent Dutch cohorts and one Danish cohort. In addition, 340 Dutch subjects underwent a 2-h hyperglycaemic clamp to investigate insulin secretion. Since sexual dimorphic associations related to DRD2 polymorphisms have been previously reported, we also performed a gender-stratified analysis. RESULTS rs1800497 at the DRD2/ANKK1 locus was associated with a significantly increased risk for type 2 diabetes in women (odds ratio 1.14 (1.06-1.23); P = 4.1*10⁴) but not in men (odds ratio 1.00 (95% CI 0.93-1.07); P = 0.92) or the combined group. Although rs1800497 was not associated with insulin secretion, we did find another single nucleotide polymorphism in this locus, rs6275, to be associated with increased first-phase glucose-stimulated insulin secretion in women (P = 5.5*10⁴) but again not in men (P = 0.34). CONCLUSION The present data identify DRD2/ANKK1 as a potential sex-specific type 2 diabetes susceptibility gene.
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Affiliation(s)
- B Guigas
- Department of Molecular Cell Biology, Leiden University Medical Centre, Leiden, The Netherlands; Department of Parasitology, Leiden University Medical Centre, Leiden, The Netherlands
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21
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Agudelo M, Khatavkar P, Yndart A, Yoo C, Rosenberg R, Devieux JG, Malow RM, Nair M. Alcohol abuse and HIV infection: role of DRD2. Curr HIV Res 2014; 12:234-42. [PMID: 25053368 PMCID: PMC4300295 DOI: 10.2174/1570162x12666140721115045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 04/25/2014] [Accepted: 04/28/2014] [Indexed: 11/22/2022]
Abstract
According to a survey from the HIV Cost and Services Utilization Study (HCSUS), approximately 53% of HIV-infected patients reported drinking alcohol and 8% were classified as heavy drinkers. The role of alcohol as a risk factor for HIV infection has been widely studied and recent research has found a significant association between heavy alcohol consumption and lower levels of CD4 T cells among HIV-infected alcoholics. Although there is evidence on the role of alcohol as a risk factor for HIV transmission and disease progression, there is a need for population studies to determine the genetic mechanisms that affect alcohol's role in HIV disease progression. One of the mechanisms of interest is the dopaminergic system. To date, the effects of dopamine on HIV neuroimmune pathogenesis are not well understood; however, dopaminergic neural degeneration due to HIV is known to occur by viral invasion into the brain via immune cells, and modulation of dopamine in the CNS may be a common mechanism by which different types of substances of abuse impact HIV disease progression. Although previous studies have shown an association of D(2) dopamine receptor (DRD2) polymorphisms with severity of alcohol dependence, the expression of this allele risk on HIV patients with alcohol dependence has not been systematically explored. In the current study, DRD2 Taq1A and C957T SNP genotyping analyses were performed in 165 HIV-infected alcohol abusers and the results were examined with immune status and CD4 counts.
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Affiliation(s)
| | | | | | | | | | | | | | - Madhavan Nair
- Department of Immunology, Institute of NeuroImmune Pharmacology, College of Medicine, AHC-I 308, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA.
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22
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Hill SY, Lichenstein S, Wang S, Carter H, McDermott M. Caudate Volume in Offspring at Ultra High Risk for Alcohol Dependence: COMT Val158Met, DRD2, Externalizing Disorders, and Working Memory. ACTA ACUST UNITED AC 2013; 3:43-54. [PMID: 25364629 DOI: 10.4236/ami.2013.34007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND There is emerging evidence that the increased susceptibility to developing alcohol and substance use disorders in those with a family history of Alcohol Dependence (AD) may be related to structural differences in brain circuits that influence the salience of rewards or modify the efficiency of information processing. Externalizing disorders of childhood including Attention Deficit Hyperactivity Disorder, Conduct and Oppositional Disorders are a prominent feature of those with a positive family history. The caudate nuclei have been implicated in both the salience of rewards and in the pathophysiology of alcohol dependence and these often antecedent childhood disorders. METHODS Adolescent/young adult high and low-risk for AD offspring (N = 130) were studied using magnetic resonance imaging. Volumes of the caudate nucleus were obtained using manual tracing with BRAINS2 software and neuropsychological functioning determined. Childhood disorders were assessed as part of a long-term longitudinal follow-up that includes young adult assessment. Dopaminergic variation was assessed using genotypic variation in the catechol-O-methyltransferase (COMT) and DRD2 genes. RESULTS High-risk subjects showed poorer Working Memory functioning. Cau-date volume did not differ between high and low-risk subjects, but those with externalizing disorders of childhood showed reduced caudate volume. Variation in COMT and DRD2 genes was associated with Working Memory performance and caudate volume. CONCLUSIONS Caudate volume is reduced in association with externalizing disorders of childhood/adolescence. Working Memory deficits appear in familial high-risk offspring and those with externalizing disorders of childhood. The dopaminergic system appears to be involved in both working memory performance and externalizing disorders of childhood.
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Affiliation(s)
- Shirley Y Hill
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA ; Department of Psychology, University of Pittsburgh, Pittsburgh, USA
| | - Sarah Lichenstein
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA ; Department of Psychology, University of Pittsburgh, Pittsburgh, USA
| | - Shuhui Wang
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Howard Carter
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Michael McDermott
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA
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