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Progress in Neurobiology Nov 2020Over the past two decades, research has revealed that genetic factors shape the propensity for aggressive, antisocial, and violent behavior. The best-documented gene... (Review)
Review
Over the past two decades, research has revealed that genetic factors shape the propensity for aggressive, antisocial, and violent behavior. The best-documented gene implicated in aggression is MAOA (Monoamine oxidase A), which encodes the key enzyme for the degradation of serotonin and catecholamines. Congenital MAOA deficiency, as well as low-activity MAOA variants, has been associated with a higher risk for antisocial behavior (ASB) and violence, particularly in males with a history of child maltreatment. Indeed, the interplay between low MAOA genetic variants and early-life adversity is the best-documented gene × environment (G × E) interaction in the pathophysiology of aggression and ASB. Additional evidence indicates that low MAOA activity in the brain is strongly associated with a higher propensity for aggression; furthermore, MAOA inhibition may be one of the primary mechanisms whereby prenatal smoke exposure increases the risk of ASB. Complementary to these lines of evidence, mouse models of Maoa deficiency and G × E interactions exhibit striking similarities with clinical phenotypes, proving to be valuable tools to investigate the neurobiological mechanisms underlying antisocial and aggressive behavior. Here, we provide a comprehensive overview of the current state of the knowledge on the involvement of MAOA in aggression, as defined by preclinical and clinical evidence. In particular, we show how the convergence of human and animal research is proving helpful to our understanding of how MAOA influences antisocial and violent behavior and how it may assist in the development of preventative and therapeutic strategies for aggressive manifestations.
Topics: Aggression; Animals; Antisocial Personality Disorder; Behavior, Animal; Gene-Environment Interaction; Humans; Monoamine Oxidase; Social Behavior; Violence
PubMed: 32574581
DOI: 10.1016/j.pneurobio.2020.101875 -
Alcohol Research : Current Reviews 2019Alcohol use disorder (AUD) frequently co-occurs with other psychiatric disorders, including personality disorders, which are pervasive, persistent, and impairing.... (Review)
Review
Alcohol use disorder (AUD) frequently co-occurs with other psychiatric disorders, including personality disorders, which are pervasive, persistent, and impairing. Personality disorders are associated with myriad serious outcomes, have a high degree of co-occurrence with substance use disorders, including AUD, and incur significant health care costs. This literature review focuses on co-occurring AUD and personality disorders characterized by impulsivity and affective dysregulation, specifically antisocial personality disorders and borderline personality disorders. Prevalence rates, potential explanations and causal models of co-occurrence, prognoses, and the status of existing treatment research are summarized. Several important future research considerations are relevant to these complex, co-occurring conditions. Research assessing mechanisms responsible for co-occurring AUD and antisocial personality disorder or borderline personality disorder will further delineate the underlying developmental processes and improve understanding of onset and courses. In addition, increased focus on the efficacy and effectiveness of treatments targeting underlying traits or common factors in these disorders will inform future prevention and treatment efforts, as interventions targeting these co-occurring conditions have relatively little empirical support.
Topics: Alcoholism; Anticonvulsants; Antidepressive Agents; Antipsychotic Agents; Antisocial Personality Disorder; Behavior Therapy; Borderline Personality Disorder; Comorbidity; Humans; Impulsive Behavior; Personality Disorders; Prognosis
PubMed: 31886107
DOI: 10.35946/arcr.v40.1.05 -
Psychological Medicine Jan 2019Psychopathy is a personality type characterized by both callous emotional dysfunction and deviant behavior that affects society in the form of actions that harm others.... (Review)
Review
Psychopathy is a personality type characterized by both callous emotional dysfunction and deviant behavior that affects society in the form of actions that harm others. Historically, researchers have been concerned with seeking data and arguments to support a neurobiological foundation of psychopathy. In the past few years, increasing research has begun to reveal brain alterations putatively underlying the enigmatic psychopathic personality. In this review, we describe the brain anatomical and functional features that characterize psychopathy from a synthesis of available neuroimaging research and discuss how such brain anomalies may account for psychopathic behavior. The results are consistent in showing anatomical alterations involving primarily a ventral system connecting the anterior temporal lobe to anterior and ventral frontal areas, and a dorsal system connecting the medial frontal lobe to the posterior cingulate cortex/precuneus complex and, in turn, to medial structures of the temporal lobe. Functional imaging data indicate that relevant emotional flow breakdown may occur in both these brain systems and suggest specific mechanisms via which emotion is anomalously integrated into cognition in psychopathic individuals during moral challenge. Directions for future research are delineated emphasizing, for instance, the relevance of further establishing the contribution of early life stress to a learned blockage of emotional self-exposure, and the potential role of androgenic hormones in the development of cortical anomalies.
Topics: Antisocial Personality Disorder; Cerebral Cortex; Humans; Neuroimaging
PubMed: 30207255
DOI: 10.1017/S0033291718002507 -
Cerebral Cortex (New York, N.Y. : 1991) Jul 2021Psychopathy is characterized by persistent antisocial behavior, impaired empathy, and egotistical traits. These traits vary also in normally functioning individuals....
Psychopathy is characterized by persistent antisocial behavior, impaired empathy, and egotistical traits. These traits vary also in normally functioning individuals. Here, we tested whether such antisocial personalities are associated with similar structural and neural alterations as those observed in criminal psychopathy. Subjects were 100 non-convicted well-functioning individuals, 19 violent male offenders, and 19 matched controls. Subjects underwent T1-weighted magnetic resonance imaging and viewed movie clips with varying violent content during functional magnetic resonance imaging. Psychopathic traits were evaluated with Levenson Self-Report Psychopathy Scale (controls) and Psychopathy Checklist-Revised (offenders). Psychopathic offenders had lower gray matter density (GMD) in orbitofrontal cortex and anterior insula. In the community sample, affective psychopathy traits were associated with lower GMD in the same areas. Viewing violence increased brain activity in periaqueductal grey matter, thalamus, somatosensory, premotor, and temporal cortices. Psychopathic offenders had increased responses to violence in thalamus and orbitofrontal, insular, and cingulate cortices. In the community sample, impulsivity-related psychopathy traits were positively associated with violence-elicited responses in similar areas. We conclude that brain characteristics underlying psychopathic spectrum in violent psychopathy are related to those observed in well-functioning individuals with asocial personality features.
Topics: Adult; Affect; Antisocial Personality Disorder; Brain; Brain Mapping; Criminals; Female; Gray Matter; Healthy Volunteers; Humans; Magnetic Resonance Imaging; Male; Middle Aged; Neuropsychological Tests; Photic Stimulation; Self Report; Violence; Young Adult
PubMed: 33834203
DOI: 10.1093/cercor/bhab072 -
Comprehensive Psychiatry Jul 2019Antisocial Personality Disorder (ASPD) is a severe personality disorder with robust associations with crime and violence, but its precise etiology is unknown. Drawing on...
Antisocial Personality Disorder (ASPD) is a severe personality disorder with robust associations with crime and violence, but its precise etiology is unknown. Drawing on near-population of federal correctional clients in the Midwestern United States, the current study examined antecedent background factors spanning adverse childhood experiences and childhood psychopathology. Greater adverse childhood experiences were associated with ASPD diagnosis with physical abuse showing associations with ASPD symptoms and sexual abuse with lifetime diagnosis for ASPD. Conduct Disorder was strongly linked to ASPD; however, Oppositional Defiant Disorder and ADHD had null associations. Given the role of environmental factors in the development of ASPD, greater criminological attention should be devoted to understanding how assorted forms of abuse and neglect coupled with childhood psychopathology contribute to ASPD especially given its linkages to severe criminal offending.
Topics: Adult; Adverse Childhood Experiences; Antisocial Personality Disorder; Attention Deficit and Disruptive Behavior Disorders; Conduct Disorder; Criminals; Female; Humans; Male; Middle Aged; Psychopathology; Retrospective Studies
PubMed: 31079021
DOI: 10.1016/j.comppsych.2019.04.001 -
California Medicine Dec 1956Not all behavior problems develop into juvenile delinquency nor do all juvenile delinquents become adult criminals. Environment is not in itself the only determining...
Not all behavior problems develop into juvenile delinquency nor do all juvenile delinquents become adult criminals. Environment is not in itself the only determining factor in the development of delinquency; rather, environment may offer the opportunity for acting out conflicts in an antisocial way. Conflicts are dealt with by antisocial behavior patterns rather than through various neurotic defense mechanisms. There appears to be a defect in conscience. Parental roles are extremely important in helping the growing child develop those positive aspects of his personality which lead to adult maturity and adult happiness. Included in parental factors are the relationships of both parents to the child, not just in what is conscious and deliberate in the relationship, but in what also can occur unconsciously or without awareness in the relationship.
Topics: Adult; Antisocial Personality Disorder; Child; Humans; Juvenile Delinquency; Parents
PubMed: 13374562
DOI: No ID Found -
Molecular Psychiatry Dec 2020Psychopathy is an extreme form of antisocial behavior, with about 1% prevalence in the general population, and 10-30% among incarcerated criminal offenders. Although the...
Psychopathy is an extreme form of antisocial behavior, with about 1% prevalence in the general population, and 10-30% among incarcerated criminal offenders. Although the heritability of severe antisocial behavior is up to 50%, the genetic background is unclear. The underlying molecular mechanisms have remained unknown but several previous studies suggest that abnormal glucose metabolism and opioidergic neurotransmission contribute to violent offending and psychopathy. Here we show using iPSC-derived cortical neurons and astrocytes from six incarcerated extremely antisocial and violent offenders, three nonpsychopathic individuals with substance abuse, and six healthy controls that there are robust alterations in the expression of several genes and immune response-related molecular pathways which were specific for psychopathy. In neurons, psychopathy was associated with marked upregulation of RPL10P9 and ZNF132, and downregulation of CDH5 and OPRD1. In astrocytes, RPL10P9 and MT-RNR2 were upregulated. Expression of aforementioned genes explained 30-92% of the variance of psychopathic symptoms. The gene expression findings were confirmed with qPCR. These genes may be relevant to the lack of empathy and emotional callousness seen in psychopathy, since several studies have linked these genes to autism and social interaction.
Topics: Aggression; Antisocial Personality Disorder; Criminals; Emotions; Empathy; Humans
PubMed: 31455857
DOI: 10.1038/s41380-019-0488-z -
Personality Disorders Nov 2022Antisocial behavior has been linked to an increased tolerance of painful stimuli; however, there is evidence that pain behavior is multidetermined. The current study...
Antisocial behavior has been linked to an increased tolerance of painful stimuli; however, there is evidence that pain behavior is multidetermined. The current study used pain measures from 3 different modalities (pain tolerance, pain ratings, electrocortical reactivity) and assessed triarchic traits of boldness and meanness to clarify the dispositional basis of associations between pain processing and antisocial behavior. High boldness was significantly associated with blunted early neural response to painful and nonpainful stimuli as well as increased pain tolerance. High meanness was associated with blunted elaborative processing of painful images, lower ratings of perceived pain for self and others, and increased pain tolerance. Meanness also accounted for variance shared between pain processing and antisocial behavior. Findings demonstrate that boldness and meanness contribute to pain processing in different ways and suggest that meanness may uniquely account for the association between blunted pain processing and antisocial behavior. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
Topics: Humans; Antisocial Personality Disorder; Personality; Pain; Phenotype
PubMed: 35266769
DOI: 10.1037/per0000556 -
International Journal of Environmental... Nov 2022Prior research shows that individuals who have exhibited antisocial behavior are in poorer health than their same-aged peers. A major driver of poor health is aging...
Prior research shows that individuals who have exhibited antisocial behavior are in poorer health than their same-aged peers. A major driver of poor health is aging itself, yet research has not investigated relationships between offending trajectories and biological aging. We tested the hypothesis that individuals following a life-course persistent (LCP) antisocial trajectory show accelerated aging in midlife. Trajectories of antisocial behavior from age 7 to 26 years were studied in the Dunedin Multidisciplinary Health and Development Study, a population-representative birth cohort (N = 1037). Signs of aging were assessed at age 45 years using previously validated measures including biomarkers, clinical tests, and self-reports. First, we tested whether the association between antisocial behavior trajectories and midlife signs of faster aging represented a decline from initial childhood health. We then tested whether decline was attributable to tobacco smoking, antipsychotic medication use, debilitating illnesses in adulthood, adverse exposures in childhood (maltreatment, socioeconomic disadvantage) and adulthood (incarceration), and to childhood self-control difficulties. Study members with a history of antisocial behavior had a significantly faster pace of biological aging by midlife, and this was most evident among individuals following the LCP trajectory (β, 0.22, 95%CI, 0.14, 0.28, ≤ 0.001). This amounted to 4.3 extra years of biological aging between ages 25-45 years for Study members following the LCP trajectory compared to low-antisocial trajectory individuals. LCP offenders also experienced more midlife difficulties with hearing (β, -0.14, 95%CI, -0.21, -0.08, ≤ 0.001), balance (β, -0.13, 95%CI, -0.18, -0.06, ≤ 0.001), gait speed (β, -0.18, 95%CI, -0.24, -0.10, ≤ 0.001), and cognitive functioning (β, -0.25, 95%CI, -0.31, -0.18, ≤ 0.001). Associations represented a decline from childhood health. Associations persisted after controlling individually for tobacco smoking, antipsychotic medication use, midlife illnesses, maltreatment, socioeconomic status, incarceration, and childhood self-control difficulties. However, the cumulative effect of these lifestyle characteristics together explained why LCP offenders have a faster Pace of Aging than their peers. While older adults typically age-out of crime, LCP offenders will likely age-into the healthcare system earlier than their chronologically same-aged peers. Preventing young people from offending is likely to have substantial benefits for health, and people engaging in a LCP trajectory of antisocial behaviors might be the most in need of health promotion programs. We offer prevention and intervention strategies to reduce the financial burden of offenders on healthcare systems and improve their wellbeing.
Topics: Humans; Aged; Adolescent; Adult; Middle Aged; Antisocial Personality Disorder; Longitudinal Studies; Birth Cohort; Antipsychotic Agents; Aging
PubMed: 36361282
DOI: 10.3390/ijerph192114402 -
Translational Psychiatry May 2022Little is known about the genetics of norm violation and aggression in relation to coronavirus disease 2019 (COVID-19). To investigate this, we used summary statistics...
Little is known about the genetics of norm violation and aggression in relation to coronavirus disease 2019 (COVID-19). To investigate this, we used summary statistics from genome-wide association studies and linkage disequilibrium score regression to calculate a matrix of genetic correlations (r) for antisocial behavior (ASB), COVID-19, and various health and behavioral traits. After false-discovery rate correction, ASB was genetically correlated with COVID-19 (r = 0.51; P = 1.54E-02) and 19 other traits. ASB and COVID-19 were both positively genetically correlated with having a noisy workplace, doing heavy manual labor, chronic obstructive pulmonary disease, and genitourinary diseases. ASB and COVID-19 were both inversely genetically correlated with average income, education years, healthspan, verbal reasoning, lifespan, cheese intake, and being breastfed as a baby. But keep in mind that r are not necessarily causal. And, if causal, their prevailing directions of effect (which causes which) are indiscernible from r alone. Moreover, the SNP-heritability ([Formula: see text]) estimates for two measures of COVID-19 were very small, restricting the overlap of genetic variance in absolute terms between ASB and COVID-19. Nonetheless, our findings suggest that those with antisocial tendencies possibly have a higher risk of exposure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) than those without antisocial tendencies. This may have been especially true early in the pandemic before vaccines against SARS-CoV-2 were available and before the emergence of the highly transmissible Omicron variant.
Topics: Antisocial Personality Disorder; COVID-19; COVID-19 Vaccines; Genome-Wide Association Study; Genomics; Humans; SARS-CoV-2
PubMed: 35538069
DOI: 10.1038/s41398-022-01948-4