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Sartor CE, Wang Z, Xu K, Kranzler HR, Gelernter J. The joint effects of ADH1B variants and childhood adversity on alcohol related phenotypes in African-American and European-American women and men. Alcohol Clin Exp Res 2014; 38:2907-14. [PMID: 25410943 DOI: 10.1111/acer.12572] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 09/06/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND The ADH1B gene has consistently been implicated in problem drinking, but rarely incorporated into gene by environment investigations of alcohol phenotypes. This study examined the joint effects of variation in ADH1B and childhood adversity-a well-documented risk factor for alcohol problems and moderator of genetic liability to psychiatric outcomes-on maximum drinks consumed in a 24-hour period (maxdrinks) and alcohol use disorder (AUD) symptoms. METHODS Data were drawn from 2,617 African-American (AA) and 1,436 European-American (EA) participants (42% female) in a multisite genetic study of substance dependence. We tested the most significant ADH1B single nucleotide polymorphisms for alcohol dependence from a genomewide association study with this sample, ADH1B-rs1229984 (Arg48His) and ADH1B-rs2066702 (Arg370Cys), in EA and AA subsamples, respectively. RESULTS Ordinal regression analyses conducted separately by sex and population revealed significant main effects for childhood adversity for both alcohol phenotypes in AA women and men and for maxdrinks in EA women. A significant rs1229984 by childhood adversity interaction was observed for AUD symptoms in EA men. Unexposed His-allele carriers reported a mean of 3.6 AUD criteria, but adversity-exposed His-allele carriers endorsed approximately the same number (6.3) as those without the protective allele (6.3 and 7.0 for adversity-exposed and -unexposed groups, respectively). CONCLUSIONS Results suggest that under conditions of childhood adversity, the His allele does not exert its protective effects in EA men (OR = 0.57, CI: 0.32 to 1.01; p = 0.056). Findings highlight the robust risk effect conferred by childhood adversity and the importance of considering population and sex in genetically informative investigations of its association with alcohol outcomes.
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Affiliation(s)
- Carolyn E Sartor
- Department of Psychiatry , Yale University School of Medicine, New Haven, Connecticut
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Differential susceptibility to effects of maternal sensitivity? A study of candidate plasticity genes. Dev Psychopathol 2014; 27:725-46. [DOI: 10.1017/s0954579414000844] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AbstractHere we tested whether there was genetic moderation of effects of early maternal sensitivity on social–emotional and cognitive–linguistic development from early childhood onward and whether any detected Gene × Environment interaction effects proved consistent with differential-susceptibility or diathesis–stress models of Person × Environment interaction (N= 695). Two new approaches for evaluating models were employed with 12 candidate genes. Whereas maternal sensitivity proved to be a consistent predictor of child functioning across the primary-school years, candidate genes did not show many main effects, nor did they tend to interact with maternal sensitivity/insensitivity. These findings suggest that the developmental benefits of early sensitive mothering and the costs of insensitive mothering look more similar than different across genetically different children in the current sample. Although acknowledgement of this result is important, it is equally important that the generally null Gene × Environment results reported here not be overgeneralized to other samples, other predictors, other outcomes, and other candidate genes.
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Buades-Rotger M, Gallardo-Pujol D. The role of the monoamine oxidase A gene in moderating the response to adversity and associated antisocial behavior: a review. Psychol Res Behav Manag 2014; 7:185-200. [PMID: 25114607 PMCID: PMC4124068 DOI: 10.2147/prbm.s40458] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hereditary factors are increasingly attracting the interest of behavioral scientists and practitioners. Our aim in the present article is to introduce some state-of-the-art topics in behavioral genetics, as well as selected findings in the field, in order to illustrate how genetic makeup can modulate the impact of environmental factors. We focus on the most-studied polymorphism to date for antisocial responses to adversity: the monoamine oxidase A gene. Advances, caveats, and promises of current research are reviewed. We also discuss implications for the use of genetic information in applied settings.
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Affiliation(s)
- Macià Buades-Rotger
- Department of Personality, Faculty of Psychology, University of Barcelona, Barcelona, Spain ; Department of Neurology, University of Lübeck, Lübeck, Germany
| | - David Gallardo-Pujol
- Department of Personality, Faculty of Psychology, University of Barcelona, Barcelona, Spain ; Institute for Brain, Cognition and Behavior (IR3C), University of Barcelona, Barcelona, Spain
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Raad R, Appelbaum PS. Impact of behavioral genetic evidence on the perceptions and dispositions of child abuse victims. Public Health Genomics 2014; 18:11-9. [PMID: 25060544 DOI: 10.1159/000364994] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 06/03/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Behavioral genetic research is beginning to elucidate some of the genetic contributions to human behaviors - including criminal and other problematic behaviors - and their interactions with environmental influences. One of the most studied of these interactions involves low-activity alleles of the monoamine oxidase A (MAOA) gene, which appear to increase the risk of antisocial behavior among males in the wake of childhood maltreatment. Some scholars have suggested that decisions about disposition of child abuse victims should be shaped by these findings, but the extent of public support for such approaches has not been assessed. METHODS In this study, a representative sample of the US population (n = 250) was presented with a vignette about a child, physically abused by his mother, who was tested for the presence of an allele that increases the risk of future impulsive violent behavior. Participants were asked about their views regarding the child's disposition, including return to his mother, and medical or psychological treatment. RESULTS Although participants thought that genetic data should be taken into account, the presence of an allele that increases the risk of impulsive violent behavior did not affect views regarding the child's return to his mother. However, it did increase respondents' willingness to provide the child with medical treatment and their view of the child as dangerous to other children. CONCLUSIONS The findings suggest that behavioral genetic evidence has effects on perceptions of dangerousness and tendencies to view problems as medical but that the public is cautious about the use of genetic findings in child abuse adjudications.
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Affiliation(s)
- Raymond Raad
- New York State Psychiatric Institute and Department of Psychiatry, Columbia University, New York, N.Y., USA
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Ficks CA, Waldman ID. Candidate genes for aggression and antisocial behavior: a meta-analysis of association studies of the 5HTTLPR and MAOA-uVNTR. Behav Genet 2014; 44:427-44. [PMID: 24902785 DOI: 10.1007/s10519-014-9661-y] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 04/29/2014] [Indexed: 12/13/2022]
Abstract
Variation in central serotonin levels due to genetic mutations or experimental modifications has been associated with the manifestation of aggression in humans and animals. Many studies have examined whether common variants in serotonergic genes are implicated in aggressive or antisocial behaviors (ASB) in human samples. The two most commonly studied polymorphisms have been the serotonin transporter linked polymorphic region of the serotonin transporter gene (5HTTLPR) and the 30 base pair variable number of tandem repeats of the monoamine oxidase A gene (MAOA-uVNTR). Despite the aforementioned theoretical justification for these polymorphisms, findings across studies have been mixed and are thus difficult to interpret. A meta-analysis of associations of the 5HTTLPR and MAOA-uVNTR with ASB was conducted to determine: (1) the overall magnitude of effects for each polymorphism, (2) the extent of heterogeneity in effect sizes across studies and the likelihood of publication bias, and (3) whether sample-level or study-level characteristics could explain observed heterogeneity across studies. Both the 5HTTLPR and the MAOA-uVNTR were significantly associated with ASB across studies. There was also significant and substantial heterogeneity in the effect sizes for both markers, but this heterogeneity was not explained by any sample-level or study-level characteristics examined. We did not find any evidence for publication bias across studies for the MAOA-uVNTR, but there was evidence for an oversampling of statistically significant effect sizes for the 5HTTLPR. These findings provide support for the modest role of common serotonergic variants in ASB. Implications regarding the role of serotonin in antisocial behavior and the conceptualization of antisocial and aggressive phenotypes are discussed.
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Affiliation(s)
- Courtney A Ficks
- Psychology Department, Emory University, 36 Eagle Row, Atlanta, GA, 30322, USA,
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Gorodetsky E, Bevilacqua L, Carli V, Sarchiapone M, Roy A, Goldman D, Enoch MA. The interactive effect of MAOA-LPR genotype and childhood physical neglect on aggressive behaviors in Italian male prisoners. GENES BRAIN AND BEHAVIOR 2014; 13:543-9. [PMID: 24805005 DOI: 10.1111/gbb.12140] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 03/25/2014] [Accepted: 05/02/2014] [Indexed: 11/29/2022]
Abstract
Aggressive disorders are moderately heritable; therefore, identification of genetic influences is important. The X-linked MAOA gene, encoding the MAOA enzyme, has a functional 30 bp repeat polymorphism in the promoter region (MAOA-LPR) that has been shown to influence aggression. Childhood trauma is a known risk factor for numerous psychopathologies in adulthood including aggressive behaviors. We investigated the interactive effect of MAOA-LPR genotype and a history of childhood trauma in predicting aggressive behaviors in a prisoner population. A total of 692 male prisoners were genotyped for MAOA-LPR with genotypes grouped into high and low transcriptional activity. Participant evaluations included measures of aggression (Brown-Goodwin Lifetime History of Aggression, BGHA), hostility (Buss-Durkee Hostility Inventory), impulsivity (Barratt Impulsiveness Scale), violence directed toward self and others, and childhood trauma [Childhood Trauma Questionnaire (CTQ)]. MAOA-LPR interacted with CTQ physical neglect (PN), the most common (47%) form of childhood trauma in this sample, to predict BGHA aggression (P = 0.002). Within the group not exposed to PN, carriers of the MAOA-LPR high-activity variant were more aggressive: (tR = 2.47, P < 0.014). We observed a crossover effect in that the increase in aggression scores with PN was greater in low-activity individuals (tR = 5.55, P < 0.0001) than in high-activity individuals (tR = 4.18, P < 0.0001). These findings suggest that childhood trauma and the functional MAOA-LPR polymorphism may interact to specifically increase risk for over aggressive behavior but not impulsivity or hostility. The MAOA-LPR low-activity variant may be protective against the development of aggressive behavior under low stress conditions, at least in this prisoner population.
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Affiliation(s)
- E Gorodetsky
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, NIH, Rockville, MD, USA
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Yang M, Mamy J, Wang Q, Liao YH, Seewoobudul V, Xiao SY, Hao W. The association of 5-HTR2A-1438A/G, COMTVal158Met, MAOA-LPR, DATVNTR and 5-HTTVNTR gene polymorphisms and borderline personality disorder in female heroin-dependent Chinese subjects. Prog Neuropsychopharmacol Biol Psychiatry 2014; 50:74-82. [PMID: 24355137 DOI: 10.1016/j.pnpbp.2013.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 11/23/2013] [Accepted: 12/06/2013] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To explore the association between the 5-HTR2A-1438A/G, COMTVal158Met, MAOA-LPR, DATVNTR and 5-HTTVNTR polymorphisms with co-morbid borderline personality disorder (BPD) in female heroin-dependent patients. SUBJECTS AND METHODS In a case control study, we compared the polymorphic distributions of 5-HTR2A-1438A/G, COMTVal158Met, MAOA-LPR, DATVNTR and 5-HTTVNTR in 296 female heroin-dependent patients (including 61 patients with BPD and 235 without BPD) and 101 normal females by genotypes, alleles, and interaction between genes. RESULTS Female heroin-dependent subjects with BPD have lower frequency of the high activity allele (L: 4 repeats (4R)) of MAOA-LPR than those female heroin-dependent subjects without BPD, and have higher 5-HTTVNTR 10R/10R genotype frequency than normal female controls, with adjusted P-value<0.05 (after adjusted for multiple testing by 1000-fold permutation tests) respectively. By MDR (Multifactor Dimensionality Reduction) analyses, the interactive effects between MAOA-LPR and 5-HTTVNTR, and among MAOA-LPR, 5-HTTVNTR and rs6311 were close to the significance level (P=0.05) in predicting the risk of co-morbidity of BPD and heroin dependence relative to normal female controls, with 1000-fold permutation testing P-value<0.06 however >0.05 respectively. CONCLUSION 5-HTTVNTR and MAOA-LPR may have independent predictive effects on co-morbid BPD in female heroin-dependent patients; the gene-gene interactions between MAOA-LPR and 5-HTTVNTR, and among MAOA-LPR, 5-HTTVNTR and rs6311 might also be involved in the etiology of this co-morbidity.
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Affiliation(s)
- Mei Yang
- Department of Social Medicine, School of Public Health, Central South University, Changsha, China; Mental Health Institute, Second Xiangya Hospital, Central South University, Changsha, China
| | - Jules Mamy
- Department of Social Medicine, School of Public Health, Central South University, Changsha, China
| | - Qiang Wang
- Department of Psychiatry, West China Hospital, Sichuan University, Chengdu, China
| | - Yan-Hui Liao
- Mental Health Institute, Second Xiangya Hospital, Central South University, Changsha, China
| | - Vasish Seewoobudul
- Mental Health Institute, Second Xiangya Hospital, Central South University, Changsha, China
| | - Shui-Yuan Xiao
- Department of Social Medicine, School of Public Health, Central South University, Changsha, China
| | - Wei Hao
- Mental Health Institute, Second Xiangya Hospital, Central South University, Changsha, China.
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Polymorphisms in genes encoding dopamine signalling pathway and risk of alcohol dependence: a systematic review. Acta Neuropsychiatr 2014; 26:69-80. [PMID: 24983092 DOI: 10.1017/neu.2013.27] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Alcohol dependence (AD) is one of the major elements that significantly influence drinking pattern that provoke the alcohol-induced organ damage. The structural and neurophysiologic abnormalities in the frontal lobes of chronic alcoholics were revealed by magnetic resonance imaging scans. It is well known that candidate genes involved in dopaminergic pathway are of immense interest to the researchers engaged in a wide range of addictive disorders. Dopaminergic pathway gene polymorphisms are being extensively studied with respect to addictive and behavioral disorders. METHODS From the broad literature available, the current review summarizes the specific polymorphisms of dopaminergic genes that play a role in alcohol dependence. RESULTS No evidence indicating any strong association between AD and polymorphisms of dopamine pathway genes has emerged from the literature. DISCUSSION Further studies are warranted, considering a range of alcohol-related traits to determine the genes that influence alcohol dependence.
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Abstract
Trauma in childhood is a psychosocial, medical, and public policy problem with serious consequences for its victims and for society. Chronic interpersonal violence in children is common worldwide. Developmental traumatology, the systemic investigation of the psychiatric and psychobiological effects of chronic overwhelming stress on the developing child, provides a framework and principles when empirically examining the neurobiological effects of pediatric trauma. This article focuses on peer-reviewed literature on the neurobiological sequelae of childhood trauma in children and in adults with histories of childhood trauma.
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Affiliation(s)
- Michael D De Bellis
- Healthy Childhood Brain Development and Developmental Traumatology Research Program, Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Box 104360, Durham, NC 27710, USA.
| | - Abigail Zisk
- Healthy Childhood Brain Development and Developmental Traumatology Research Program, Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Box 104360, Durham, NC 27710, USA
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Posttraumatic stress disorder and symptoms among American Indians and Alaska Natives: a review of the literature. Soc Psychiatry Psychiatr Epidemiol 2014; 49:417-33. [PMID: 24022752 PMCID: PMC3875613 DOI: 10.1007/s00127-013-0759-y] [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: 12/08/2012] [Accepted: 08/30/2013] [Indexed: 12/30/2022]
Abstract
PURPOSE American Indians and Alaska Natives (AI/ANs) experience high rates of trauma and posttraumatic stress disorder (PTSD). We reviewed existing literature to address three interrelated questions: (1) What is the prevalence of PTSD and PTSD symptoms among AI/ANs? (2) What are the inciting events, risk factors, and co-morbidities in AI/ANs, and do they differ from those in the general U.S. population? (3) Are studies available to inform clinicians about the course and treatment of PTSD in this population? METHODS We searched the PubMed and Web of Science databases and a database on AI/AN health, capturing an initial sample of 77 original English-language articles published 1992–2010. After applying exclusion criteria, we retained 37 articles on prevalence of PTSD and related symptoms among AI/AN adults. We abstracted key information and organized it in tabular format. RESULTS AI/ANs experience a substantially greater burden of PTSD and related symptoms than U.S. Whites. Combat experience and interpersonal violence were consistently cited as leading causes of PTSD and related symptoms. PTSD was associated with bodily pain, lung disorders, general health problems, substance abuse, and pathological gambling. In general, inciting events, risk factors, and co-morbidities appear similar to those in the general U.S. population. CONCLUSIONS Substantial research indicates a strikingly high incidence of PTSD in AI/AN populations. However, inciting events, risk factors, and co-morbidities in AI/ANs, and how they may differ from those in the general population, are poorly understood. Very few studies are available on the clinical course and treatment of PTSD in this vulnerable population.
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Mitigating aggressiveness through education? The monoamine oxidase A genotype and mental health in general population. Acta Neuropsychiatr 2014; 26:19-28. [PMID: 25142096 DOI: 10.1017/neu.2013.34] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Monoamine oxidase A (MAOA) gene promoter region includes a variable number of tandem repeat (VNTR) associated with antisocial behaviour in adverse environment. We have examined the effect of the MAOA-uVNTR on mental health and academic success by using a population representative sample and a longitudinal design. METHODS The data of the older cohort (n = 593, aged 15 years at the original sampling) of the longitudinal Estonian Children Personality, Behaviour and Health Study (ECPBHS) were used. Follow-ups were conducted at ages 18 and 25 years. Aggressiveness, inattention and hyperactivity were reported by class teachers or, at older age, self-reported. Stressful life events, psychological environment in the family and interactions between family members were self-reported. Data of general mental abilities and education were obtained at the age of 25, and lifetime psychiatric disorder assessment was carried out with the Mini-International Neuropsychiatric Interview (MINI) interview. RESULTS MAOA-uVNTR genotype had no independent effect on aggressiveness, hyperactive and inattentive symptoms, and neither was there a genotype interaction with adverse life events. Interestingly, the proportion of male subjects with higher education by the age of 25 was significantly larger among those with MAOA low-activity alleles (χ² = 7.13; p = 0.008). Logistic regression revealed that MAOA low-activity alleles, higher mental abilities, occurrence of anxiety disorders and absence of substance-use disorder were significant independent predictors for higher education in male subjects. CONCLUSIONS In a population representative sample of young subjects, the MAOA-uVNTR 'risk genotype' predicted better life outcomes as expressed in higher level of education.
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Clemens B, Voß B, Pawliczek C, Mingoia G, Weyer D, Repple J, Eggermann T, Zerres K, Reetz K, Habel U. Effect of MAOA Genotype on Resting-State Networks in Healthy Participants. Cereb Cortex 2014; 25:1771-81. [PMID: 24451655 DOI: 10.1093/cercor/bht366] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Up to now, it remains unclear how monoamine oxidase A (MAOA), which has been repeatedly linked to aggression, affects brain activity within resting-state networks (RSN). Here, we used functional magnetic resonance imaging (fMRI) to test whether the MAOA genotype might influence activity within the common RSN. Our results demonstrate that during rest, participants with the low-activity genotype (MAOA-L) exhibit more activity within frontoparietal and temporal parts of the default mode network (DMN) and the cerebellum. The executive control and salience RSN revealed reduced activity for the MAOA-L group in several areas related to executive control, namely the right middle frontal gyrus (BA 6 and BA 9), and the dorsal part of the anterior cingulate cortex. Participants with the high-activity genotype (MAOA-H) showed increased activity in the posterior cingulate part of the DMN. Taken together, we found widespread hyperactivity within the DMN and reduced activity in brain areas related to executive and inhibitory control for the MAOA-L group. We discuss how these first results examining the influence of MAOA on the resting brain might be related to previous findings regarding the genetics of aggression, while acknowledging that this is an exploratory study which needs further confirmation.
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Affiliation(s)
- Benjamin Clemens
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical School Interdisciplinary Center for Clinical Research, Medical School
| | - Bianca Voß
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical School
| | | | | | - David Weyer
- Interdisciplinary Center for Clinical Research, Medical School
| | - Jonathan Repple
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical School
| | | | | | - Kathrin Reetz
- Department of Neurology, Medical School, RWTH Aachen University, Aachen, Germany JARA-Translational Brain Medicine, Aachen, Germany Institute of Neuroscience and Medicine (INM-4), Research Center Jülich GmbH, Jülich, Germany
| | - Ute Habel
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical School JARA-Translational Brain Medicine, Aachen, Germany
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Lee SY, Chen SL, Chang YH, Lu RB. Variation of types of alcoholism: review and subtypes identified in Han Chinese. Prog Neuropsychopharmacol Biol Psychiatry 2014; 48:36-40. [PMID: 24080236 DOI: 10.1016/j.pnpbp.2013.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 09/17/2013] [Accepted: 09/23/2013] [Indexed: 10/26/2022]
Abstract
Alcoholism, as it has been hypothesized, is caused by a highly heterogeneous genetic load. Since 1960, many reports have used the bio-psycho-social approach to subtype alcoholism; however, no subtypes have been genetically validated. We reviewed and compared the major single-gene, multiple-gene, and gene-to-gene interaction studies on alcoholism published during the past quarter-century, including many recent studies that have made contributions to the subtyping of alcoholism. Four subtypes of alcoholism have been reported: [1] pure alcoholism, [2] anxiety/depression alcoholism, [3] antisocial alcoholism, and [4] mixed alcoholism. Most of the important studies focused on three genes: DRD2, MAOA, and ALDH2. Therefore, our review focuses on these three genes.
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Affiliation(s)
- Sheng-Yu Lee
- Department of Psychiatry, College of Medicine, National Cheng Kung University, Taiwan; Department of Psychiatry, National Cheng Kung University Hospital, Tainan, Taiwan
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Byrd AL, Manuck SB. MAOA, childhood maltreatment, and antisocial behavior: meta-analysis of a gene-environment interaction. Biol Psychiatry 2014; 75:9-17. [PMID: 23786983 PMCID: PMC3858396 DOI: 10.1016/j.biopsych.2013.05.004] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 04/20/2013] [Accepted: 05/03/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND In a seminal study of gene-environment interaction, childhood maltreatment predicted antisocial behavior more strongly in male subjects carrying an MAOA promoter variant of lesser, compared with higher, transcriptional efficiency. Many further investigations have been reported, including studies of other early environmental exposures and female subjects. Here, we report a meta-analysis of studies testing the interaction of MAOA genotype and childhood adversities on antisocial outcomes in predominantly nonclinical samples. METHODS Included were 27 peer-reviewed, English-language studies published through August, 2012, that contained indicators of maltreatment or other family (e.g., parenting, sociodemographic) hardships; MAOA genotype; indices of aggressive and antisocial behavior; and statistical test of genotype-environment interaction. Studies of forensic and exclusively clinical samples, clinical cohorts lacking proportionally matched control subjects, or outcomes nonspecific for antisocial behavior were excluded. The Liptak-Stouffer weighted Z-test for meta-analysis was implemented to maximize study inclusion and calculated separately for male and female cohorts. RESULTS Across 20 male cohorts, early adversity presaged antisocial outcomes more strongly for low-activity, relative to high- activity, MAOA genotype (p = .0044). Stratified analyses showed the interaction specific to maltreatment (p = .00000082) and robust to several sensitivity analyses. Across 11 female cohorts, MAOA did not interact with combined early life adversities, whereas maltreatment alone predicted antisocial behaviors preferentially, but weakly, in female subjects of high-activity MAOA genotype (p = .02). CONCLUSIONS We found common regulatory variation in MAOA to moderate effects of childhood maltreatment on male antisocial behaviors, confirming a sentinel finding in research on gene-environment interaction. An analogous, but less consistent, finding in female subjects warrants further investigation.
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Affiliation(s)
- Amy L. Byrd
- Department of Psychology, University of Pittsburgh
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Dorfman HM, Meyer-Lindenberg A, Buckholtz JW. Neurobiological mechanisms for impulsive-aggression: the role of MAOA. Curr Top Behav Neurosci 2014; 17:297-313. [PMID: 24470068 DOI: 10.1007/7854_2013_272] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Aggression may be present across a large part of the spectrum of psychopathology, and underlies costly criminal antisocial behaviors. Human aggression is a complex and underspecified construct, confounding scientific discovery. Nevertheless, some biologically tractable subtypes are apparent, and one in particular-impulsive (reactive) aggression-appears to account for many facets of aggression-related dysfunction in psychiatric illness. Impulsive-aggression is significantly heritable, suggesting genetic transmission. However, the specific neurobiological mechanisms that mediate genetic risk for impulsive-aggression remain unclear. Here, we review extant data on the genetics and neurobiology of individual differences in impulsive-aggression, with particular attention to the role of genetic variation in Monoamine Oxidase A (MAOA) and its impact on serotonergic signaling within corticolimbic circuitry.
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Affiliation(s)
- Hayley M Dorfman
- Department of Psychology, Harvard University, Cambridge, MA, USA
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Abstract
The Diagnostic and Statistical Manual of Mental Disorders (DSM 5) classification of antisocial personality disorder (ASPD) describes individuals who engage in repetitive irresponsible, delinquent, and criminal behavior. The diagnosis is highly controversial, with many researchers and clinicians arguing that the category is too heterogeneous, overinclusive, and demonstrates considerable overlap with other disorders. This review focuses on recent studies that have improved our understanding of the characteristics of individuals who fit the ASPD definition by exploring how subtypes differ and how comorbid conditions influence the presentation of ASPD. In addition, we discuss research on the etiology of ASPD that has identified genetic and environmental factors that may contribute to the development and persistence of antisocial behavior, and brain imaging research that has improved our understanding of the relationships between ASPD and other psychopathology. Finally, we discuss promising preliminary research on treatment for this disorder.
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Abstract
Alcoholism has a substantial heritability yet the detection of specific genetic influences has largely proved elusive. The strongest findings are with genes encoding alcohol metabolizing enzymes. A few candidate genes such as GABRA2 have shown robust associations with alcoholism. Moreover, it has become apparent that variants in stress-related genes such as CRHR1, may only confer risk in individuals exposed to trauma, particularly in early life. Over the past decade there have been tremendous advances in large scale SNP genotyping technologies allowing for genome-wide associations studies (GWAS). As a result, it is now recognized that genetic risk for alcoholism is likely to be due to common variants in very many genes, each of small effect, although rare variants with large effects might also play a role. This has resulted in a paradigm shift away from gene centric studies toward analyses of gene interactions and gene networks within biologically relevant pathways.
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Affiliation(s)
- Mary-Anne Enoch
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA,
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Long-term programming of enhanced aggression by peripuberty stress in female rats. Psychoneuroendocrinology 2013; 38:2758-69. [PMID: 23942011 DOI: 10.1016/j.psyneuen.2013.07.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 06/22/2013] [Accepted: 07/10/2013] [Indexed: 11/23/2022]
Abstract
Human literature has linked adverse early life experiences with an increased risk to develop violent behaviors in both boys and girls. We have previously shown that male rats submitted to stress during the peripuberty period display as adults abnormal aggressive behavior against both male intruders and female partners. In the present study, we examined whether the same stress protocol would affect the development of aggressive behaviors in female rats. We evaluated the behavior of these peripuberty stressed female rats when confronted, at adulthood, with either female or male intruders, and during their cohabitation with male partners. Given that estrus cycle influences mood and aggressive behaviors, female aggressive behavior was assessed at different estrus cycle phases: estrus and diestrus, and during pregnancy and lactancy. Additionally, we evaluated postpartum plasma levels of vasopressin, oxytocin and corticosterone, hormones associated with aggression and the regulation of social behavior. Compared to control females, females submitted to stressful events during puberty exhibited higher and more sustained rates of aggression during adulthood independently on the estrus cycle or the sex of the intruder, and they had higher levels of plasma vasopressin. Significant correlations between plasma levels of vasopressin and corticosterone and aggressive behavior were also found. Strikingly, our results showed opposite intragroup correlations suggesting a different role of these hormones on aggression depending on life experiences. We provide here an animal model, devoid of cultural influences strongly supporting a role for biological factors in the development of aggressive behaviors following exposure to stressful events at puberty in females.
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Abstract
OBJECTIVE A functional promoter polymorphism in the monoamine oxidase A (MAOA) gene has been implicated in neuropsychiatric disorders and also moderates the association between early-life stress and mental disorders, which often co-occur with cardiovascular disease. No study has examined the relationship between MAOA genotype, childhood trauma, and subclinical atherosclerosis. The objective of this investigation was to examine whether childhood trauma moderates the association between MAOA genotype and subclinical atherosclerosis. METHODS A sample including 289 middle-aged male twin pairs was studied. Subclinical atherosclerosis was assessed by brachial flow-mediated dilation (FMD) using ultrasound. Childhood trauma, before age 18 years, was measured with the Early Trauma Inventory and included physical, emotional, and sexual abuse as well as general trauma. Generalized estimating equation models were used to test the main and interactive effects of the MAOA genotype and each domain of childhood trauma on FMD, adjusting for known risk factors. RESULTS General trauma was the most prevalent childhood trauma (28.4%), followed by physical abuse (25.0%), emotional abuse (19.4%), and sexual abuse (11.6%). MAOA genotype was not associated with any domain of childhood trauma. There was no significant evidence for a main effect for the MAOA genotype (β = .02, p = .82) or childhood trauma (.005 < β < .10, p > .54) FMD. However, a significant interaction was observed between MAOA genotype and physical (β interaction = .37, p = .026) or emotional abuse (β interaction = .43, p = .025) on subclinical atherosclerosis. CONCLUSIONS Childhood trauma modulates the impact of MAOA variant on subclinical atherosclerosis, independent of traditional cardiovascular risk factors.
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70
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Aragam N, Wang KS, Anderson JL, Liu X. TMPRSS9 and GRIN2B are associated with neuroticism: a genome-wide association study in a European sample. J Mol Neurosci 2013; 50:250-6. [PMID: 23229837 DOI: 10.1007/s12031-012-9931-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 11/26/2012] [Indexed: 12/31/2022]
Abstract
Major depression disorder (MDD) is a complex and chronic disease that ranks fourth as cause of disability worldwide. About 14 million adults in the USA are believed to have MDD, and an estimated 75 % attempt suicide making MDD a major public health problem. Neuroticism has been recognized as an endophenotype of MDD; however, few genome-wide association (GWA) analyses of neuroticism as a quantitative trait have been reported to date. The aim of this study is to identify genome-wide genetic variants affecting neuroticism using a European sample. A linear regression model was used to analyze the association with neuroticism as a continuous trait in the Netherlands Study of Depression and Anxiety and Netherlands Twin Registry population-based sample of 2,748 individuals with Perlegen 600K single nucleotide polymorphisms (SNPs). In addition, the neuroticism-associated genes/loci of the top 20 SNPs (p < 10⁻⁴) were examined with anti-social personality disorder (ASPD) in an Australian twin family study. Through GWA analysis, 32 neuroticism-associated SNPs (p < 10⁻⁴) were identified. The most significant association was observed with SNP rs4806846 within the TMPRSS9 gene (p = 7.79 × 10⁻⁶) at 19p13.3. The next best signal was in GRIN2B gene (rs220549, p = 1.05 × 10⁻⁵) at 12p12. In addition, several SNPs within GRIN2B showed borderline associations with ASPD in the Australian sample. In conclusion, these results provide a possible genetic basis for the association with neuroticism. Our findings provide a basis for replication in other populations to elucidate the potential role of these genetic variants in neuroticism and MDD along with a possible relationship between ASPD and neuroticism.
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Affiliation(s)
- Nagesh Aragam
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, PO Box 70259, Lamb Hall, Johnson City, TN 37614-1700, USA
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Hill J, Breen G, Quinn J, Tibu F, Sharp H, Pickles A. Evidence for interplay between genes and maternal stress in utero: monoamine oxidase A polymorphism moderates effects of life events during pregnancy on infant negative emotionality at 5 weeks. GENES BRAIN AND BEHAVIOR 2013; 12:388-96. [PMID: 23480342 DOI: 10.1111/gbb.12033] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 02/22/2013] [Accepted: 02/25/2013] [Indexed: 02/01/2023]
Abstract
The low activity variant of the monoamine oxidase A (MAOA) functional promoter polymorphism, MAOA-LPR, in interaction with adverse environments (G × E) is associated with child and adult antisocial behaviour disorders. MAOA is expressed during foetal development so in utero G × E may influence early neurodevelopment. We tested the hypothesis that MAOA G × E during pregnancy predicts infant negative emotionality soon after birth. In an epidemiological longitudinal study starting in pregnancy, using a two stage stratified design, we ascertained MAOA-LPR status (low vs. high activity variants) from the saliva of 209 infants (104 boys and 105 girls), and examined predictions to observed infant negative emotionality at 5 weeks post-partum from life events during pregnancy. In analyses weighted to provide estimates for the general population, and including possible confounders for life events, there was an MAOA status by life events interaction (P = 0.017). There was also an interaction between MAOA status and neighbourhood deprivation (P = 0.028). Both interactions arose from a greater effect of increasing life events on negative emotionality in the MAOA-LPR low activity, compared with MAOA-LPR high activity infants. The study provides the first evidence of moderation by MAOA-LPR of the effect of the social environment in pregnancy on negative emotionality in infancy, an early risk for the development of child and adult antisocial behaviour disorders.
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Affiliation(s)
- J Hill
- Centre for Developmental Science and Disorders, University of Manchester, Room 3.305, Jean McFarlane Building, Oxford Road, Manchester M13 9PL, UK.
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72
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Bevilacqua L, Goldman D. Genetics of impulsive behaviour. Philos Trans R Soc Lond B Biol Sci 2013; 368:20120380. [PMID: 23440466 DOI: 10.1098/rstb.2012.0380] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Impulsivity, defined as the tendency to act without foresight, comprises a multitude of constructs and is associated with a variety of psychiatric disorders. Dissecting different aspects of impulsive behaviour and relating these to specific neurobiological circuits would improve our understanding of the etiology of complex behaviours for which impulsivity is key, and advance genetic studies in this behavioural domain. In this review, we will discuss the heritability of some impulsivity constructs and their possible use as endophenotypes (heritable, disease-associated intermediate phenotypes). Several functional genetic variants associated with impulsive behaviour have been identified by the candidate gene approach and re-sequencing, and whole genome strategies can be implemented for discovery of novel rare and common alleles influencing impulsivity. Via deep sequencing an uncommon HTR2B stop codon, common in one population, was discovered, with implications for understanding impulsive behaviour in both humans and rodents and for future gene discovery.
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Affiliation(s)
- Laura Bevilacqua
- Department of Psychiatry, New York University School of Medicine, New York, NY 10016, USA.
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Abstract
OBJECTIVE Although tribes differ with regard to the use of alcohol and drugs, substance dependence is one of the primary sources of health problems facing Native Americans. General population studies have demonstrated that substance dependence has a substantially heritable component (approximately 50% of the risk resulting from genetic influences); however, fewer studies have investigated the role of genetics in the risk for substance dependence in Native Americans. METHOD The authors present a literature review of the evidence for a genetic component in the etiology of substance dependence in Native Americans, including studies of heritability, linkage analyses, and candidate genes. RESULTS Evidence for the heritability of alcohol and drug dependence was found. Linkage analyses revealed that genes influencing risk for substance dependence and related phenotypes, such as body mass index (BMI), drug tolerance, EEG patterns, and externalizing traits, reside on several chromosome regions identified in other population samples. Overlap in the gene locations for substance dependence and BMI suggests that a common genetic substrate may exist for disorders of consumption. Studies of the genes that code for alcohol-metabolizing enzymes have not revealed any risk variants specific to Native American populations, although most Native Americans lack protective variants seen in other populations. Other candidate genes associated with substance dependence phenotypes in Native Americans include OPRM1, CRN1, COMT, GABRA2, MAOA, and HTR3-B. CONCLUSIONS Substance dependence has a substantial genetic component in Native Americans, similar in magnitude to that reported for other populations. The high rates of substance dependence seen in some tribes is likely a combination of a lack of genetic protective factors (metabolizing enzyme variants) combined with genetically mediated risk factors (externalizing traits, consumption drive, and drug sensitivity or tolerance) that combine with key environmental factors (trauma exposure, early age at onset of use, and environmental hardship) to produce an elevated risk for the disorder.
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Affiliation(s)
- Cindy L. Ehlers
- Department of Molecular and Integrative Neurosciences, The Scripps Research Institute, La Jolla, California, USA
| | - Ian R. Gizer
- Department of Psychological Sciences, University of Missouri, Columbia, MO, USA
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Laucht M, Brandeis D, Zohsel K. Gene-environment interactions in the etiology of human violence. Curr Top Behav Neurosci 2013; 17:267-95. [PMID: 24362945 DOI: 10.1007/7854_2013_260] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
This chapter reviews the current research on gene-environment interactions (G × E) with regard to human violence. Findings are summarized from both behavioral and molecular genetic studies that have investigated the interplay of genetic and environmental factors in terms of influencing violence-related behavior. Together, these studies reveal promising evidence that genetic factors combine with environmental influences to impact on the development of violent behavior and related phenotypes. G × E have been identified for a number of candidate genes implicated in violence. Moreover, the reviewed G × E were found to extend to a broad range of environmental characteristics, including both adverse and favorable conditions. As has been the case with other G × E research, findings have been mixed, with considerable heterogeneity between studies. Lack of replication together with serious methodological limitations remains a major challenge for drawing definitive conclusions about the nature of violence-related G × E. In order to fulfill its potential, it is recommended that future G × E research needs to shift its focus to dissecting the neural mechanisms and the underlying pathophysiological pathways by which genetic variation may influence differential susceptibility to environmental exposures.
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Affiliation(s)
- Manfred Laucht
- Department of Child and Adolescent Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, P.O. Box 122120, 68072, Mannheim, Germany,
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The effects of child maltreatment on early signs of antisocial behavior: genetic moderation by tryptophan hydroxylase, serotonin transporter, and monoamine oxidase A genes. Dev Psychopathol 2012; 24:907-28. [PMID: 22781862 DOI: 10.1017/s0954579412000442] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Gene-environment interaction effects in predicting antisocial behavior in late childhood were investigated among maltreated and nonmaltreated low-income children (N = 627, M age = 11.27). Variants in three genes were examined: tryptophan hydroxylase 1 (TPH1), serotonin transporter linked polymorphic region (5-HTTLPR), and monoamine oxidase A (MAOA) upstream variable number tandem repeat. In addition to child maltreatment status, we considered the impact of maltreatment subtypes, developmental timing of maltreatment, and chronicity. Indicators of antisocial behavior were obtained from self-, peer, and adult counselor reports. In a series of analyses of covariance, child maltreatment and its parameters demonstrated strong main effects on early antisocial behavior as assessed by all report forms. Genetic effects operated primarily in the context of gene-environment interactions, moderating the impact of child maltreatment on outcomes. Across the three genes, among nonmaltreated children no differences in antisocial behavior were found based on genetic variation. In contrast, among maltreated children specific polymorphisms of TPH1, 5-HTTLPR, and MAOA were each related to heightened self-report of antisocial behavior; the interaction of 5-HTTLPR and developmental timing of maltreatment also indicated more severe antisocial outcomes for children with early onset and recurrent maltreatment based on genotype. TPH1 and 5-HTTLPR interacted with maltreatment subtype to predict peer reports of antisocial behavior; genetic variation contributed to larger differences in antisocial behavior among abused children. The TPH1 and 5-HTTLPR polymorphisms also moderated the effects of maltreatment subtype on adult reports of antisocial behavior; again, the genetic effects were strongest for children who were abused. In addition, TPH1 moderated the effect of developmental timing of maltreatment and chronicity on adult reports of antisocial behavior. The findings elucidate how genetic variation contributes to identifying which maltreated children are most vulnerable to antisocial development.
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Gallardo-Pujol D, Andrés-Pueyo A, Maydeu-Olivares A. MAOAgenotype, social exclusion and aggression: an experimental test of a gene-environment interaction. GENES BRAIN AND BEHAVIOR 2012; 12:140-5. [DOI: 10.1111/j.1601-183x.2012.00868.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 07/26/2012] [Accepted: 10/09/2012] [Indexed: 01/19/2023]
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Verhoeven FEA, Booij L, Kruijt AW, Cerit H, Antypa N, Does W. The effects of MAOA genotype, childhood trauma, and sex on trait and state-dependent aggression. Brain Behav 2012; 2:806-13. [PMID: 23170243 PMCID: PMC3500467 DOI: 10.1002/brb3.96] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 07/11/2012] [Accepted: 09/03/2012] [Indexed: 01/11/2023] Open
Abstract
Monoamine oxidase A (MAOA) genotypic variation has been associated with variation in aggression, especially in interaction with childhood trauma or other early adverse events. Male carriers of the low-expressing variant (MAOA-L) with childhood trauma or other early adverse events seem to be more aggressive, whereas female carriers with the high-expressing variant (MAOA-H) with childhood trauma or other early adverse events may be more aggressive. We further investigated the effects of MAOA genotype and its interaction with sex and childhood trauma or other early adverse events on aggression in a young adult sample. We hypothesized that the association between genotype, childhood trauma, and aggression would be different for men and women. We also explored whether this association is different for dispositional (trait) aggression versus aggression in the context of dysphoric mood. In all, 432 Western European students (332 women, 100 men; mean age 20.2) were genotyped for the MAOA gene. They completed measures of childhood trauma, state and trait measures of aggression-related behaviors (STAXI), and cognitive reactivity to sad mood (LEIDS-R), including aggression reactivity. Women with the MAOA-H had higher aggression reactivity scores than women with the MAOA-L. This effect was not observed in men, although the nonsignificant findings in men may be a result of low power. Effects on the STAXI were not observed, nor were there gene by environment interactions on any of the aggression measures. A protective effect of the low-expression variant in women on aggression reactivity is consistent with previous observations in adolescent girls. In females, the MAOA-H may predispose to aggression-related problems during sad mood.
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78
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Lu RB, Lee JF, Huang SY, Lee SY, Chang YH, Kuo PH, Chen SL, Chen SH, Chu CH, Lin WW, Wu PL, Ko HC. Interaction between ALDH2*1*1 and DRD2/ANKK1 TaqI A1A1 genes may be associated with antisocial personality disorder not co-morbid with alcoholism. Addict Biol 2012; 17:865-74. [PMID: 21070510 DOI: 10.1111/j.1369-1600.2010.00268.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Previous studies on acetaldehyde dehydrogenase 2 (ALDH2) focused on drinking behavior or alcoholism because the ALDH2*2 allele protects against the risk of developing alcoholism. The mechanism provides that the ALDH2 gene's protective effect is also involved in dopamine metabolism. The interaction of the ALDH2 gene with neurotransmitters, such as dopamine, is suggested to be related to alcoholism. Because alcoholism is often co-morbid with antisocial personality disorder (ASPD), previous association studies on antisocial alcoholism cannot differentiate whether those genes relate to ASPD with alcoholism or ASPD only. This study examined the influence of the interaction effect of the ALDH2*1*1, *1*2 or *2*2 polymorphisms with the dopamine 2 receptor (DRD2) Taq I polymorphism on ASPD. Our 541 Han Chinese male participants were classified into three groups: antisocial alcoholism (ASPD co-morbid with alcohol dependence, antisocial ALC; n = 133), ASPD without alcoholism (ASPD not co-morbid with alcohol dependence, antisocial non-ALC; n = 164) and community controls (healthy volunteers from the community; n = 244). Compared with healthy controls, individuals with the DRD2 A1/A1 and the ALDH2*1/*1 genotypes were at a 5.39 times greater risk for antisocial non-ALC than were those with other genotypes. Our results suggest that the DRD2/ANKK1 and ALDH2 genes interacted in the antisocial non-ALC group; a connection neglected in previous studies caused by not separating antisocial ALC from ASPD. Our study made this distinction and showed that these two genes may be associated ASPD without co-morbid alcoholism.
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Affiliation(s)
- Ru-Band Lu
- Institute of Behavioral Medicine, College of Medicine, National Cheng Kung University, Taiwan.
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79
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McGrath LM, Mustanski B, Metzger A, Pine DS, Kistner-Griffin E, Cook E, Wakschlag LS. A latent modeling approach to genotype-phenotype relationships: maternal problem behavior clusters, prenatal smoking, and MAOA genotype. Arch Womens Ment Health 2012; 15:269-82. [PMID: 22610759 PMCID: PMC3734947 DOI: 10.1007/s00737-012-0286-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 04/23/2012] [Indexed: 01/01/2023]
Abstract
This study illustrates the application of a latent modeling approach to genotype-phenotype relationships and gene × environment interactions, using a novel, multidimensional model of adult female problem behavior, including maternal prenatal smoking. The gene of interest is the monoamine oxidase A (MAOA) gene which has been well studied in relation to antisocial behavior. Participants were adult women (N = 192) who were sampled from a prospective pregnancy cohort of non-Hispanic, white individuals recruited from a neighborhood health clinic. Structural equation modeling was used to model a female problem behavior phenotype, which included conduct problems, substance use, impulsive-sensation seeking, interpersonal aggression, and prenatal smoking. All of the female problem behavior dimensions clustered together strongly, with the exception of prenatal smoking. A main effect of MAOA genotype and a MAOA × physical maltreatment interaction were detected with the Conduct Problems factor. Our phenotypic model showed that prenatal smoking is not simply a marker of other maternal problem behaviors. The risk variant in the MAOA main effect and interaction analyses was the high activity MAOA genotype, which is discrepant from consensus findings in male samples. This result contributes to an emerging literature on sex-specific interaction effects for MAOA.
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Affiliation(s)
- L. M. McGrath
- Psychiatric and Neurodevelopmental Genetics Unit, Department of Psychiatry and Center for Human Genetic Research, Massachusetts General Hospital/Harvard Medical School, Simches Research Building 6th floor, 185 Cambridge Street, Boston, MA 02114, USA
| | - B. Mustanski
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - A. Metzger
- Department of Psychology, West Virginia University, Morgantown, WV, USA
| | - D. S. Pine
- Mood and Anxiety Disorders Program, National Institute of Mental Health, Bethesda, MD, USA
| | - E. Kistner-Griffin
- Division of Biostatistics and Epidemiology, Medical University of South Carolina, Charleston, SC, USA
| | - E. Cook
- Department of Psychiatry, Institute for Juvenile Research, University of Illinois at Chicago, Chicago, IL, USA
| | - L. S. Wakschlag
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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80
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Interaction of serotonin transporter linked polymorphic region and childhood neglect on criminal behavior and substance use for males and females. Dev Psychopathol 2012; 24:181-93. [PMID: 22293003 DOI: 10.1017/s0954579411000769] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Childhood neglect has been cited as a risk factor for later substance abuse and criminal behavior. However, a large body of literature shows that a substantial percentage of neglected and abused individuals do not go on to abuse substances or engage in criminal behavior. The current study investigates whether a genetic variant (serotonin transporter linked polymorphic region [5-HTTLPR]) in the 5-hydroxytryptamine (5-HTT) gene moderates the effect of childhood neglect on alcohol use problems, marijuana use, and criminal behavior. Data from the National Longitudinal Study of Adolescent Health shows that 5-HTTLPR conditions the effect of neglect on marijuana use for females, but not for males. Findings also reveal a significant gene-environment correlation between 5-HTTLPR and neglect for females only. These results suggest that 5-HTTLPR is associated with an increased risk of neglect for females, and it also increases neglected females' risk of abusing marijuana.
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81
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Abstract
Addictions are common, chronic, and relapsing diseases that develop through a multistep process. The impact of addictions on morbidity and mortality is high worldwide. Twin studies have shown that the heritability of addictions ranges from 0.39 (hallucinogens) to 0.72 (cocaine). Twin studies indicate that genes influence each stage from initiation to addiction, although the genetic determinants may differ. Addictions are by definition the result of gene × environment interaction. These disorders, which are in part volitional, in part inborn, and in part determined by environmental experience, pose the full range of medical, genetic, policy, and moral challenges. Gene discovery is being facilitated by a variety of powerful approaches, but is in its infancy. It is not surprising that the genes discovered so far act in a variety of ways: via altered metabolism of drug (the alcohol and nicotine metabolic gene variants), via altered function of a drug receptor (the nicotinic receptor, which may alter affinity for nicotine but as discussed may also alter circuitry of reward), and via general mechanisms of addiction (genes such as monoamine oxidase A and the serotonin transporter that modulate stress response, emotion, and behavioral control). Addiction medicine today benefits from genetic studies that buttress the case for a neurobiologic origin of addictive behavior, and some general information on familially transmitted propensity that can be used to guide prevention. A few well-validated, specific predictors such as OPRM1, ADH1B, ALDH2, CHRNA5, and CYP26 have been identified and can provide some specific guidance, for example, to understand alcohol-related flushing and upper GI cancer risk (ADH1B and AKLDH2), variation in nicotine metabolism (CYP26), and, potentially, naltrexone treatment response (OPRM1). However, the genetic predictors available are few in number and account for only a small portion of the genetic variance in liability, and have not been integrated into clinical nosology or care.
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Affiliation(s)
- Francesca Ducci
- Institute of Psychiatry, Psychological Medicine, Kings College, Box P063, De Crespigny Park, London SE5 8AF, UK
| | - David Goldman
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 5625 Fishers Lane, Rockville, MD 20852, USA
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Thornton T, Zhang Q, Cai X, Ober C, McPeek MS. XM: association testing on the X-chromosome in case-control samples with related individuals. Genet Epidemiol 2012; 36:438-50. [PMID: 22552845 DOI: 10.1002/gepi.21638] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Revised: 03/05/2012] [Accepted: 03/16/2012] [Indexed: 12/25/2022]
Abstract
Genetic variants on the X-chromosome could potentially play an important role in some complex traits. However, development of methods for detecting association with X-linked markers has lagged behind that for autosomal markers. We propose methods for case-control association testing with X-chromosome markers in samples with related individuals. Our method, XM, appropriately adjusts for both correlation among relatives and male-female allele copy number differences. Features of XM include: (1) it is applicable to and computationally feasible for completely general combinations of family and case-control designs; (2) it allows for both unaffected controls and controls of unknown phenotype to be included in the same analysis; (3) it can incorporate phenotype information on relatives with missing genotype data; and (4) it adjusts for sex-specific trait prevalence values. We propose two other tests, Xχ and XW, which can also be useful in certain contexts. We derive the best linear unbiased estimator of allele frequency, and its variance, for X-linked markers. In simulation studies with related individuals, we demonstrate the power and validity of the proposed methods. We apply the methods to X-chromosome association analysis of (1) asthma in a Hutterite sample and (2) alcohol dependence in the GAW 14 COGA data. In analysis (1), we demonstrate computational feasibility of XM and the applicability of our robust variance estimator. In analysis (2), we detect significant association, after Bonferroni correction, between alcohol dependence and single nucleotide polymorphism rs979606 in the monoamine oxidases A gene, where this gene has previously been found to be associated with substance abuse and antisocial behavior.
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Affiliation(s)
- Timothy Thornton
- Department of Biostatistics, University of Washington, Seattle, Washington 98195-7232, USA.
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83
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5-HTTLPR as a potential moderator of the effects of adverse childhood experiences on risk of antisocial personality disorder. Psychiatr Genet 2012; 21:240-8. [PMID: 21399568 DOI: 10.1097/ypg.0b013e3283457c15] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Antisocial personality disorder (ASPD) frequently co-occurs with substance dependence (SD). A functional polymorphism (5-HTTLPR) in the serotonin transporter gene has been widely studied as a risk factor for a variety of psychopathologic conditions including aggressive/violent behavior. Childhood abuse is an important predictor of ASPD. We examined 5-HTTLPR genotype and adverse childhood events (ACEs) as risk factors for ASPD in a SD sample. MATERIALS AND METHODS Study participants [602 European-Americans (EAs) and 779 African-Americans (AAs)] were interviewed to obtain lifetime diagnoses of ASPD and SD and information on ACEs. Triallelic genotypes for 5-HTTLPR were obtained using standard methods. We used logistic generalized estimating equations regression to examine ACEs and 5-HTTLPR genotype and their interaction as predictors of ASPD, separately by population group. RESULTS There were 203 (14.7%) participants diagnosed with ASPD. The frequency of the low-activity 5-HTTLPR S' allele did not differ by ASPD diagnosis, and there was no overall 5-HTTLPR×ACE interaction. However, among European-Americans, male sex (odds ratio=3.36; P<0.001) and ACE history (odds ratio=1.47; P=0.002) were significant predictors of ASPD. Among AAs, there was a significant interaction of sex×5-HTTLPR genotype×ACEs (χ=13.92, P<0.001). Among AA men, each additional ACE significantly increased the odds of ASPD irrespective of genotype, whereas among AA women, the effect of ACEs on ASPD was significant only among S' homozygotes. However, these results are limited by the small sample size in each subgroup, (particularly AA women with S'S' genotype; N=7) and require replication. CONCLUSIONS Childhood maltreatment contributes to the risk of ASPD, an effect for which there is preliminary evidence of moderation by 5-HTTLPR genotype in AA women.
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Nadelhoffer T, Bibas S, Grafton S, Kiehl KA, Mansfield A, Sinnott-Armstrong W, Gazzaniga M. Neuroprediction, Violence, and the Law: Setting the Stage. NEUROETHICS-NETH 2012; 5:67-99. [PMID: 25083168 PMCID: PMC4114735 DOI: 10.1007/s12152-010-9095-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this paper, our goal is to (a) survey some of the legal contexts within which violence risk assessment already plays a prominent role, (b) explore whether developments in neuroscience could potentially be used to improve our ability to predict violence, and (c) discuss whether neuropredictive models of violence create any unique legal or moral problems above and beyond the well worn problems already associated with prediction more generally. In "Violence Risk Assessment and the Law", we briefly examine the role currently played by predictions of violence in three high stakes legal contexts: capital sentencing ("Violence Risk Assessment and Capital Sentencing"), civil commitment hearings ("Violence Risk Assessment and Civil Commitment"), and "sexual predator" statutes ("Violence Risk Assessment and Sexual Predator Statutes"). In "Clinical vs. Actuarial Violence Risk Assessment", we briefly examine the distinction between traditional clinical methods of predicting violence and more recently developed actuarial methods, exemplified by the Classification of Violence Risk (COVR) software created by John Monahan and colleagues as part of the MacArthur Study of Mental Disorder and Violence [1]. In "The Neural Correlates of Psychopathy", we explore what neuroscience currently tells us about the neural correlates of violence, using the recent neuroscientific research on psychopathy as our focus. We also discuss some recent advances in both data collection ("Cutting-Edge Data Collection: Genetically Informed Neuroimaging") and data analysis ("Cutting-Edge Data Analysis: Pattern Classification") that we believe will play an important role when it comes to future neuroscientific research on violence. In "The Potential Promise of Neuroprediction", we discuss whether neuroscience could potentially be used to improve our ability to predict future violence. Finally, in "The Potential Perils of Neuroprediction", we explore some potential evidentiary ("Evidentiary Issues"), constitutional ("Constitutional Issues"), and moral ("Moral Issues") issues that may arise in the context of the neuroprediction of violence.
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Affiliation(s)
- Thomas Nadelhoffer
- Department of Philosophy, Dickinson College, Carlisle, PA 17013, USA. The Kenan Institute for Ethics, Duke University, PO Box 90432, Durham, NC 27708, USA
| | - Stephanos Bibas
- University of Pennsylvania Law School, 3400 Chestnut Street, Philadelphia, PA 19104, USA
| | - Scott Grafton
- Department of Psychology, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Kent A. Kiehl
- Department of Psychology, University of New Mexico & the Mind Research Network, 1101, Yale Blvd NE, Albuquerque, NM 87106, USA
| | - Andrew Mansfield
- The Sage Center for the Study of the Mind, Santa Barbara, CA 93106, USA
| | - Walter Sinnott-Armstrong
- Department of Philosophy & the Kenan Institute for Ethics, Duke University, PO Box 90432, Durham, NC 27708, USA
| | - Michael Gazzaniga
- Department of Psychology, University of California, Santa Barbara, & The Sage Center for the Study of the Mind, Santa Barbara, CA 93106, USA
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Abstract
Alcoholism and drug dependence are common psychiatric disorders with a heritability of about 50%; therefore genetic and environmental influences are equally important. Early-life stress is a predictor of adolescent problem drinking/drug use and alcohol/drug dependence in adulthood, but moderating factors governing the availability of alcohol/drug are important. The risk-resilience balance for addiction may be due in part to the interaction between genetic variation and environment stressors (G × E); this has been confirmed by twin studies of inferred genetic risk. Measured genotype studies to detect G × E effects have used a range of alcohol consumption and diagnostic phenotypes and stressors ranging from early-life to adulthood past year life events. In this article, the current state of the field is critically reviewed and suggestions are put forth for future research.
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Affiliation(s)
- Mary-Anne Enoch
- NIH/NIAAA/DICBR/LNG, 5625 Fishers Lane, Room 3S32, MSC 9412, Bethesda, MD 20892-9412, USA.
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86
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Bevilacqua L, Carli V, Sarchiapone M, George DK, Goldman D, Roy A, Enoch MA. Interaction between FKBP5 and childhood trauma and risk of aggressive behavior. ACTA ACUST UNITED AC 2012; 69:62-70. [PMID: 22213790 DOI: 10.1001/archgenpsychiatry.2011.152] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
CONTEXT Childhood trauma may predispose individuals to aggressive behavior, and both childhood trauma and aggressive behavior are associated with hypothalamic-pituitary-adrenal axis dysregulation. OBJECTIVE To determine whether there would be an interaction between genetic variation in FKBP5 and childhood trauma in predicting aggressive behavior. DESIGN Cross-sectional study. Four FKBP5 single-nucleotide polymorphisms used in previous studies (rs3800373, rs9296158, rs1360780, and rs9470080) were genotyped. Three diplotypes were derived from 2 major putatively functional haplotypes regulating protein expression that were previously associated with glucocorticoid receptor sensitivity. SETTING Penitentiary District of Abruzzo-Molise in central Italy. PARTICIPANTS A population of 583 male Italian prisoners recruited between 2005 and 2008. MAIN OUTCOME MEASURES A comprehensive analysis of aggression and impulsivity was undertaken using the Brown-Goodwin Lifetime History of Aggression (BGHA) questionnaire, the Buss-Durkee Hostility Inventory (BDHI), and the Barratt Impulsiveness Scale (BIS). A history of childhood trauma was investigated with the Childhood Trauma Questionnaire. The interaction between the FKBP5 diplotypes and childhood trauma on measures of aggression was analyzed. Analyses were replicated with a second behavioral measure of aggression: violent behavior in jail. Individual single-nucleotide polymorphism analysis was performed. RESULTS Childhood trauma had a significant effect on BGHA and BDHI scores but not on BIS scores. We observed a significant influence of the FKBP5 high-expression diplotype on both a lifetime history of aggressive behavior (BGHA) (P = .012) and violent behavior in jail (P = .025) but only in individuals exposed to childhood trauma, in particular to physical abuse. No main effect of the FKBP5 diplotypes was observed. CONCLUSION These data suggest that childhood trauma and variants in the FKBP5 gene may interact to increase the risk of overt aggressive behavior.
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87
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Genetics of dopamine receptors and drug addiction. Hum Genet 2012; 131:803-22. [PMID: 22350797 DOI: 10.1007/s00439-012-1145-7] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Accepted: 02/04/2012] [Indexed: 01/18/2023]
Abstract
Dopamine plays a key role in reward behavior, yet the association of drug dependence as a chronic, relapsing disorder with the genes encoding the various dopaminergic receptor subtypes remains difficult to delineate. In the context of subsequent genome-wide association (GWAS) research and post-GWAS investigations, we summarize the novel data that link genes encoding molecules involved in the dopaminergic system (dopamine receptors, transporter and enzymes in charge of its metabolism) to drug addiction. Recent reports indicate that the heritability of drug addiction should be high enough to allow a significant role for a specific set of genes, and the available genetic studies, which might not be already conclusive because of the heterogeneity of designs, methods and recruited samples, should support the idea of a significant role of at least one gene related to dopaminergic system. Evolutionary changes in primates and non-primate animals of genes coding for molecules involved in dopaminergic system highlight why addictive disorders are mainly limited to humans. Restricting the analyses to more specific intermediate phenotypes (or endophenotypes) such as attention allocation, stress reactivity, novelty seeking, behavioral disinhibition and impulsivity, instead of the broad addictive disorder concept can be instrumental to identify novel genes associated with these traits in the context of genome-wide studies.
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88
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Nikulina V, Widom CS, Brzustowicz LM. Child abuse and neglect, MAOA, and mental health outcomes: a prospective examination. Biol Psychiatry 2012; 71:350-7. [PMID: 22030358 PMCID: PMC3295575 DOI: 10.1016/j.biopsych.2011.09.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 08/31/2011] [Accepted: 09/08/2011] [Indexed: 01/24/2023]
Abstract
BACKGROUND Studies have examined the interaction of MAOA genotype with childhood maltreatment in relation to depressive symptomatology and alcohol abuse with conflicting findings. Both high- and low-activity allele combinations have been shown to be protective for maltreated children with direction of findings varying by study methodology and participants' sex. METHODS Participants in a prospective cohort design study involving court-substantiated cases of child abuse and neglect and a matched comparison group were followed up into adulthood and interviewed (N = 802). Eighty-two percent consented to provide blood, 631 gave permission for DNA extraction and analyses, and 575 were included in the final sample. This sample included male, female, white, and nonwhite (primarily black) participants. Symptoms of dysthymia, major depression, and alcohol abuse were assessed using the National Institutes of Mental Health Diagnostic Interview Schedule-III-R. RESULTS Significant three-way interactions, MAOA genotype by abuse by sex, predicted dysthymic symptoms. Low-activity MAOA genotype buffered against symptoms of dysthymia in physically abused and multiply-maltreated women. Significant three-way interactions, MAOA genotype by sexual abuse by race, predicted all outcomes. Low-activity MAOA genotype buffered against symptoms of dysthymia, major depressive disorder, and alcohol abuse for sexually abused white participants. The high-activity genotype was protective in the nonwhite sexually abused group. CONCLUSIONS This prospective study provides evidence that MAOA interacts with child maltreatment to predict mental health outcomes. Reasons for sex differences and race findings are discussed.
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Affiliation(s)
- Valentina Nikulina
- Psychology Department, John Jay College, City University of New York, 899 Tenth Avenue, Suite 631, New York, NY 10019, USA, Phone: 646-284-6410, Fax: 212-484-1199
| | - Cathy Spatz Widom
- Psychology Department, John Jay College, CityUniversity of New York, 899 Tenth Avenue, Suite 631, New York, NY 10019, USA
| | - Linda M. Brzustowicz
- Department of Genetics, Rutgers – The State University of New Jersey, Piscataway, NJ 08854, USA
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89
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Fergusson DM, Boden JM, Horwood LJ, Miller A, Kennedy MA. Moderating role of the MAOA genotype in antisocial behaviour. Br J Psychiatry 2012; 200:116-23. [PMID: 22297589 PMCID: PMC3269651 DOI: 10.1192/bjp.bp.111.093328] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Recent studies have examined gene×environment (G×E) interactions involving the monoamine oxidase A (MAOA) gene in moderating the associations between exposure to adversity and antisocial behaviour. The present study examined a novel method for assessing interactions between a single gene and multiple risk factors related to environmental and personal adversity. AIMS To test the hypothesis that the presence of the low-activity MAOA genotype was associated with an increased response to a series of risk factors. METHOD Participants were 399 males from the Christchurch Health and Development Study who had complete data on: (a) MAOA promoter region variable number tandem repeat genotype; (b) antisocial behaviour (criminal offending) to age 30 and convictions to age 21; and (c) maternal smoking during pregnancy, IQ, childhood maltreatment and school failure. RESULTS Poisson regression models were fitted to three antisocial behaviour outcomes (property/violent offending ages 15-30; and convictions ages 17-21), using measures of exposure to adverse childhood circumstances. The analyses revealed consistent evidence of G x E interactions, such that those with the low-activity MAOA variant who were exposed to adversity in childhood were significantly more likely to report offending in late adolescence and early adulthood. CONCLUSIONS The present findings add to the evidence suggesting that there is a stable G x E interaction involving MAOA, a range of adverse environmental and personal factors, and antisocial behaviour across the life course. These analyses also demonstrate the utility of using multiple environmental/personal exposures to test G×E interactions.
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90
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Magnusson Å, Lundholm C, Göransson M, Copeland W, Heilig M, Pedersen NL. Familial influence and childhood trauma in female alcoholism. Psychol Med 2012; 42:381-389. [PMID: 21798111 PMCID: PMC3648622 DOI: 10.1017/s0033291711001310] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND To assess the role of genetic and environmental factors in female alcoholism using a large population-based twin sample, taking into account possible differences between early and late onset disease subtype. METHOD Twins aged 20-47 years from the Swedish Twin Registry (n=24 119) answered questions to establish lifetime alcohol use disorders. Subjects with alcoholism were classified for subtype. Structural equation modeling was used to quantify the proportion of phenotypic variance due to genetic and environmental factors and test whether heritability in women differed from that in men. The association between childhood trauma and alcoholism was then examined in females, controlling for background familial factors. RESULTS Lifetime prevalence of alcohol dependence was 4.9% in women and 8.6% in men. Overall, heritability for alcohol dependence was 55%, and did not differ significantly between men and women, although women had a significantly greater heritability for late onset (type I). Childhood physical trauma and sexual abuse had a stronger association with early onset compared to late onset alcoholism [odds ratio (OR) 2.54, 95% confidence interval (CI) 1.53-3.88 and OR 2.29, 95% CI 1.38-3.79 respectively]. Co-twin analysis indicated that familial factors largely accounted for the influence of physical trauma whereas the association with childhood sexual abuse reflected both familial and specific effects. CONCLUSIONS Heritability of alcoholism in women is similar to that in men. Early onset alcoholism is strongly association with childhood trauma, which seems to be both a marker of familial background factors and a specific individual risk factor per se.
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Affiliation(s)
- Å. Magnusson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - C. Lundholm
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - M. Göransson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - W. Copeland
- Center for Developmental Epidemiology, Duke University, Durham, NC, USA
| | - M. Heilig
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Laboratory of Clinical and Translational Studies, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, USA
| | - N. L. Pedersen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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91
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Shi Z, Bureau JF, Easterbrooks MA, Zhao X, Lyons-Ruth K. Childhood Maltreatment and Prospectively Observed Quality of Early Care as Predictors of Antisocial Personality Disorder Features. Infant Ment Health J 2012; 33:55-96. [PMID: 22754051 DOI: 10.1002/imhj.20295] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Few studies have evaluated the separate contributions of maltreatment and ongoing quality of parent-child interaction to the etiology of antisocial personality features using a prospective longitudinal design. 120 low-income young adults (aged 18-23) were assessed for extent of ASPD features on the Structured Clinical Interview for Diagnosis-Axis II, for presence of maltreatment on the Conflict Tactics Scale, Traumatic Experiences Scale, and Adult Attachment Interview, and for referral in infancy to parent-infant clinical services. Fifty-six of these families had been studied longitudinally since the first year of life. In infancy, attachment disorganization and disrupted mother-infant interaction were assessed; in middle childhood, disorganized-controlling attachment behaviors were reliably rated. In kindergarten and second grade, behavior problems were assessed by teacher report. In cross-sectional analyses, maltreatment was significantly associated with ASPD features but did not account for the independent effect of early referral to parent-infant services on ASPD features. In longitudinal analyses, maternal withdrawal in infancy predicted the extent of ASPD features twenty years later, independently of childhood abuse. In middle childhood, disorganized attachment behavior and maladaptive behavior at school added to prediction of later ASPD features. Antisocial features in young adulthood have precursors in the minute-to-minute process of parent-child interaction beginning in infancy.
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Affiliation(s)
- Zhenyu Shi
- Department of Psychiatry, Harvard Medical School, Cambridge Hospital, USA
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92
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Taneri B, Ambrosino E, van Os J, Brand A. A new public health genomics model for common complex diseases, with an application to common behavioral disorders. Per Med 2012; 9:29-38. [PMID: 29783294 DOI: 10.2217/pme.11.81] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AIM In the light of common forms of gene-environment interplay, particularly epigenomics and ecogenetics, the incorporation of envirome data into public health genomics models becomes necessary. Developing and restructuring public health genomics models is essential within the context of common complex diseases. MATERIALS & METHODS We developed a novel theoretical model integrating a gene-environment interaction paradigm into public health genomics, which integrates four main sources of data: personal genome data, personal envirome data, molecular genetic/genomic evidence and environmental factors implicated in gene-environment interactions underlying common complex disease phenotypes. Collectively, this knowledge is fed into public health policy development. RESULTS This model is the first public health genomics model that incorporates gene-environment interactions within the context of common complex disorders, and is applied to behavioral conditions. CONCLUSION Our model proposes, for the first time, an understanding of behavioral disorders from the genomic perspective, combining it with known environmental factors within the framework of public health. Application of this model will enable evidence-based behavioral interventions at the public health level and facilitate genome-based public health policy development for behavioral conditions.
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Affiliation(s)
- Bahar Taneri
- Department of Biological Sciences, Faculty of Arts & Sciences, Eastern Mediterranean University, Famagusta, North Cyprus.
| | - Elena Ambrosino
- Institute of Public Health Genomics, Department of Genetics & Cell Biology, Research Institutes CAPHRI & GROW, Faculty of Health, Medicine & Life Sciences, Maastricht University, 6202 AZ Maastricht, The Netherlands
| | - Jim van Os
- European Graduate School for Neuroscience, SEARCH, Maastricht University Medical Centre, 6200 MD Maastricht, The Netherlands.,King's College London, King's Health Partners, Department of Psychosis Studies, Institute of Psychiatry, London SE5 8AF, UK
| | - Angela Brand
- Institute of Public Health Genomics, Department of Genetics & Cell Biology, Research Institutes CAPHRI & GROW, Faculty of Health, Medicine & Life Sciences, Maastricht University, 6202 AZ Maastricht, The Netherlands
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93
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Liu N, Zhang Y, Brady HJ, Cao Y, He Y, Zhang Y. Relation between childhood maltreatment and severe intrafamilial male-perpetrated physical violence in Chinese community: the mediating role of borderline and antisocial personality disorder features. Aggress Behav 2012; 38:64-76. [PMID: 22028215 DOI: 10.1002/ab.20417] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Revised: 07/26/2011] [Accepted: 07/29/2011] [Indexed: 11/07/2022]
Abstract
This study investigates the role of borderline personality disorder (BPD) and antisocial personality disorder (ASPD) features as mediators of the effects of childhood maltreatment on severe intrafamilial physical violence amongst Chinese male perpetrators. A cross-sectional survey and face-to-face interview were conducted to examine childhood maltreatment, personality disorder features, impulsivity, aggression, and severe intrafamilial physical violence in a community sample of 206 abusive men in China. The results suggest that ASPD or BPD features mediate between childhood maltreatment and intimate partner violence perpetration in Chinese abusive men. These findings may yield clinical and forensic implications for assessing the psychopathology of abusive men, and may steer the intervention of intimate partner violence.
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Affiliation(s)
- Na Liu
- Mental Health Institute; Second Xiangya Hospital; Central South University; Changsha Hunan People's Republic of China
- Department of Clinical Psychology; Nanjing Brain Hospital; Nanjing Medical Hospital; Nanjing Jiangsu People's Republic of China
| | - Yalin Zhang
- Mental Health Institute; Second Xiangya Hospital; Central South University; Changsha Hunan People's Republic of China
| | | | - Yuping Cao
- Mental Health Institute; Second Xiangya Hospital; Central South University; Changsha Hunan People's Republic of China
| | - Ying He
- Mental Health Institute; Second Xiangya Hospital; Central South University; Changsha Hunan People's Republic of China
| | - Yingli Zhang
- Mental Health Institute; Second Xiangya Hospital; Central South University; Changsha Hunan People's Republic of China
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94
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Simons RL, Lei MK, Stewart EA, Brody GH, Beach SRH, Philibert RA, Gibbons FX. SOCIAL ADVERSITY, GENETIC VARIATION, STREET CODE, AND AGGRESSION: A GENETICLLY INFORMED MODEL OF VIOLENT BEHAVIOR. YOUTH VIOLENCE AND JUVENILE JUSTICE 2012; 10:3-24. [PMID: 23785260 PMCID: PMC3684565 DOI: 10.1177/1541204011422087] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Elijah Anderson (1997, 1999) argues that exposure to extreme community disadvantage, residing in "street" families, and persistent discrimination encourage many African Americans to develop an oppositional culture that he labels the "code of the street." Importantly, while the adverse conditions described by Anderson increase the probability of adopting the code of the street, most of those exposed to these adverse conditions do not do so. The present study examines the extent to which genetic variation accounts for these differences. Although the diathesis-stress model guides most genetically informed behavior science, the present study investigates hypotheses derived from the differential susceptibility perspective (Belsky & Pluess, 2009). This model posits that some people are genetically predisposed to be more susceptible to environmental influence than others. An important implication of the model is that those persons most vulnerable to adverse social environments are the same ones who reap the most benefit from environmental support. Using longitudinal data from a sample of several hundred African American males, we examined the manner in which variants in three genes - 5-HTT, DRD4, and MAOA - modulate the effect of community and family adversity on adoption of the street code and aggression. We found strong support for the differential susceptibility perspective. When the social environment was adverse, individuals with these genetic variants manifested more commitment to the street code and aggression than those with other genotypes, whereas when adversity was low they demonstrated less commitment to the street code and aggression than those with other genotypes.
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95
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Park A, Sher KJ, Todorov AA, Heath AC. Interaction between the DRD4 VNTR polymorphism and proximal and distal environments in alcohol dependence during emerging and young adulthood. JOURNAL OF ABNORMAL PSYCHOLOGY 2011; 120:585-95. [PMID: 21381802 DOI: 10.1037/a0022648] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The manifestation of alcohol dependence at different developmental stages may be associated with different genetic and environmental factors. Taking a developmental approach, we characterized interaction between the dopamine receptor 4 variable number tandem repeat (DRD4 VNTR) polymorphism and developmentally specific environmental factors (childhood adversity, college/Greek organization involvement, and delayed adult role transition) on alcohol dependence during emerging and young adulthood. Prospective data were obtained from a cohort of 234 White individuals (56% women, 44% men) who were followed up at ages 18 through 34. A longitudinal hierarchical factor model was estimated to model a traitlike persistent alcohol dependence factor throughout emerging and young adulthood and 2 residual statelike alcohol dependence factors limited to emerging adulthood and young adulthood, respectively. We accounted for those alcohol dependence factors by modeling 3 two-way interaction effects between the DRD4 VNTR polymorphism and the 3 developmentally specific environment factors. Carriers of the DRD4 long allele showed greater susceptibility to environmental effects; they showed more persistent symptoms of alcohol dependence as childhood adversity increased and more alcohol dependence symptoms limited to emerging adulthood as college/Greek organization involvement increased. Alcohol dependence among noncarriers of the long allele, however, did not differ as a function of those environments. Although replication is necessary, these findings highlight the importance of repeated phenotypic assessments across development and modeling both distal and proximal environments and their interaction with genetic susceptibility at specific developmental stages.
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Affiliation(s)
- Aesoon Park
- Department of Psychological Sciences, University of Missouri, USA
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96
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Javdani S, Sadeh N, Verona E. Expanding our lens: female pathways to antisocial behavior in adolescence and adulthood. Clin Psychol Rev 2011; 31:1324-48. [PMID: 22001339 PMCID: PMC3376007 DOI: 10.1016/j.cpr.2011.09.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 09/09/2011] [Accepted: 09/11/2011] [Indexed: 12/18/2022]
Abstract
Women and girls' engagement in antisocial behavior represents a psychological issue of great concern given the radiating impact that women's antisociality can have on individuals, families, and communities. Despite its importance and relevance for psychological science, this topic has received limited attention to date and no systematic review of risk factors exists. The present paper aims to systematically review the empirical literature informing risk factors relevant to women's antisocial behavior, with a focus on adolescence and adulthood. Primary aims are to 1) review empirical literatures on risk factors for female antisocial behavior across multiple levels of influence (e.g., person-level characteristics, risky family factors, and gender-salient contexts) and fields of study (e.g., psychology, sociology); 2) evaluate the relevance of each factor for female antisocial behavior; and 3) incorporate an analysis of how gender at both the individual and ecological levels shapes pathways to antisocial behavior in women and girls. We conclude that women's antisocial behavior is best-understood as being influenced by person-level or individual vulnerabilities, risky family factors, and exposure to gender-salient interpersonal contexts, and underscore the importance of examining women's antisocial behavior through an expanded lens that views gender as an individual level attribute as well as a social category that organizes the social context in ways that may promote engagement in antisocial behavior. Based on the present systematic review, an integrative pathway model is proposed toward the goal of synthesizing current knowledge and generating testable hypotheses for future research.
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97
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Sullivan EC, Mendoza SP, Capitanio JP. Similarity in temperament between mother and offspring rhesus monkeys: sex differences and the role of monoamine oxidase-a and serotonin transporter promoter polymorphism genotypes. Dev Psychobiol 2011; 53:549-63. [PMID: 21866539 PMCID: PMC3162344 DOI: 10.1002/dev.20594] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Temperament is usually considered biologically based and largely inherited, however, the environment can shape the development of temperament. Allelic variation may confer differential sensitivity to early environment resulting in variations in temperament. Here we explore the relationship between measures of temperament in mothers and their first-born offspring and the role of genetic sensitivity in establishing the strength of these associations. Temperament ratings were conducted on 3- to 4-month-old rhesus monkeys after a 25-hr biobehavioral assessment. Factor analysis revealed a four-factor structure of temperament. Females assessed as infants have reproduced and their offspring have also been evaluated through the standardized testing paradigm. Canonical correlation analysis revealed statistically significant associations between factor scores of mothers and sons, but not mothers and daughters. Further, offspring possessing the high activity, "low risk," alleles of the rhMAOA-LPR or rh5-HTTLPR showed statistically significant canonical correlations, whereas those possessing other alleles did not, suggesting differential genetic sensitivity to the normative early experience of maternal temperament.
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Affiliation(s)
- Erin C Sullivan
- California National Primate Research Center, Davis, California, USA.
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98
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Cheng HG, Huang Y, Liu Z, Liu B. Associations linking parenting styles and offspring personality disorder are moderated by parental personality disorder, evidence from China. Psychiatry Res 2011; 189:105-9. [PMID: 21195487 DOI: 10.1016/j.psychres.2010.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 11/18/2010] [Accepted: 12/02/2010] [Indexed: 11/24/2022]
Abstract
The aim of the study is to examine the association linking parenting and personality disorder controlling for parental personality disorder, and whether this association is moderated by parental PD. Data were from community-dwelling high school students aged 18 and above and their parents living in Beijing, China. A total of 181 cases and 2,605 controls were included in this study. Personality disorder in students was assessed via a two-stage approach, Personality Diagnostic Questionnaire as a screening tool and International Personality Disorder Examination as the diagnostic tool. Information about parenting was collected from students using Egna Minnen av. Betraffande Uppfostran. Negative parenting styles, e.g. rejective or over-protective parenting, were found to be associated with the occurrence of personality disorder. Conflictive parenting styles were also found to be associated with personality disorder. Generally stronger associations were found for students with parental personality disorder as compared to students without parental personality disorder. Findings from this study support the role of parenting in the occurrence of PD, especially for children with family history of personality disorder.
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Affiliation(s)
- Hui Green Cheng
- Department of Social Psychiatry and Behavioral Medicine, Institute of Mental Health, Laboratory of Mental Health, Ministry of Health (Peking University), Beijing, China
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Young-Wolff KC, Enoch MA, Prescott CA. The influence of gene-environment interactions on alcohol consumption and alcohol use disorders: a comprehensive review. Clin Psychol Rev 2011; 31:800-16. [PMID: 21530476 PMCID: PMC3192029 DOI: 10.1016/j.cpr.2011.03.005] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 03/09/2011] [Accepted: 03/09/2011] [Indexed: 01/08/2023]
Abstract
Since 2005, a rapidly expanding literature has evaluated whether environmental factors such as socio-cultural context and adversity interact with genetic influences on drinking behaviors. This article critically reviews empirical research on alcohol-related genotype-environment interactions (GxE) and provides a contextual framework for understanding how genetic factors combine with (or are shaped by) environmental factors to influence the development of drinking behaviors and alcohol use disorders. Collectively, evidence from twin, adoption, and molecular genetic studies indicates that the degree of importance of genetic influences on risk for drinking outcomes can vary in different populations and under different environmental circumstances. However, methodological limitations and lack of consistent replications in this literature make it difficult to draw firm conclusions regarding the nature and effect size of alcohol-related GxE. On the basis of this review, we describe several methodological challenges as they relate to current research on GxE in drinking behaviors and provide recommendations to aid future research.
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Pardini M, Krueger F, Hodgkinson C, Raymont V, Ferrier C, Goldman D, Strenziok M, Guida S, Grafman J. Prefrontal cortex lesions and MAO-A modulate aggression in penetrating traumatic brain injury. Neurology 2011; 76:1038-45. [PMID: 21422455 DOI: 10.1212/wnl.0b013e318211c33e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE This study investigates the interaction between brain lesion location and monoamine oxidase A (MAO-A) in the genesis of aggression in patients with penetrating traumatic brain injury (PTBI). METHODS We enrolled 155 patients with PTBI and 42 controls drawn from the Vietnam Head Injury Study registry. Patients with PTBI were divided according to lesion localization (prefrontal cortex [PFC] vs non-PFC) and were genotyped for the MAO-A polymorphism linked to low and high transcriptional activity. Aggression was assessed with the aggression/agitation subscale of the Neuropsychiatric Inventory (NPI-a). RESULTS Patients with the highest levels of aggression preferentially presented lesions in PFC territories. A significant interaction between MAO-A transcriptional activity and lesion localization on aggression was revealed. In the control group, carriers of the low-activity allele demonstrated higher aggression than high-activity allele carriers. In the PFC lesion group, no significant differences in aggression were observed between carriers of the 2 MAO-A alleles, whereas in the non-PFC lesion group higher aggression was observed in the high-activity allele than in the low-activity allele carriers. Higher NPI-a scores were linked to more severe childhood psychological traumatic experiences and posttraumatic stress disorder symptomatology in the control and non-PFC lesion groups but not in the PFC lesion group. CONCLUSIONS Lesion location and MAO-A genotype interact in mediating aggression in PTBI. Importantly, PFC integrity is necessary for modulation of aggressive behaviors by genetic susceptibilities and traumatic experiences. Potentially, lesion localization and MAO-A genotype data could be combined to develop risk-stratification algorithms and individualized treatments for aggression in PTBI.
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Affiliation(s)
- M Pardini
- Cognitive Neuroscience Section, National Institute of Neurological Disorders and Stroke-NIH, Bethesda, MD, USA
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