RESUMO
War and crises affect mental health, social attitudes, and cultural norms, which can exacerbate the state of long-term insecurity. With decades of armed conflict, the Democratic Republic of Congo is one example, and violence has become normalized in civilian settings. In this study, we tested the effectiveness of the NETfacts health system, an integrated model of evidence-based individual trauma treatment (Narrative Exposure Therapy [NET]) and a trauma-informed community-based intervention (NETfacts). Alongside changes in mental health outcomes (posttraumatic stress disorder, depression, social disapproval, and shame) we also investigated change in attitudes, including rape myth acceptance, stigmatization of survivors of sexual violence, and skepticism about the reintegration of former combatants. To test whether the additional community intervention is superior to individual NET alone, we implemented a randomized controlled design with six villages and interviewed a sample of 1,066 community members. Our results demonstrate that the NETfacts health system in comparison with NET alone more effectively reduced rape myth acceptance and with it ongoing victimization and perpetration. Community members of the NETfacts group also presented with less stigmatizing attitudes against survivors of sexual violence. Skepticism about the reintegration of former combatants declined in both groups. NETfacts appears to have increased motivation to engage in individual treatment. Synergizing the healing effects of individual and collective trauma exposure, the NETfacts health system appears to be an effective and scalable approach to correct degrading or ignominious norms and restore functioning and mental health in postconflict communities.
Assuntos
Estupro , Delitos Sexuais , Transtornos de Estresse Pós-Traumáticos , Humanos , Estupro/psicologia , Transtornos de Estresse Pós-Traumáticos/terapia , Transtornos de Estresse Pós-Traumáticos/psicologia , ViolênciaRESUMO
Extensive pharmacologic, genetic, and epigenetic research has linked the glucocorticoid receptor (GR) to memory processes, and to risk and symptoms of posttraumatic stress disorder (PTSD). In the present study we investigated the epigenetic pattern of 12 genes involved in the regulation of GR signaling in two African populations of heavily traumatized individuals: Survivors of the rebel war in northern Uganda (n = 463) and survivors of the Rwandan genocide (n = 350). The strongest link between regional methylation and PTSD risk and symptoms was observed for NTRK2, which encodes the transmembrane receptor tropomyosin-related kinase B, binds the brain-derived neurotrophic factor, and has been shown to play an important role in memory formation. NTRK2 methylation was not related to trauma load, suggesting that methylation differences preexisted the trauma. Because NTRK2 methylation differences were predominantly associated with memory-related PTSD symptoms, and because they seem to precede traumatic events, we next investigated the relationship between NTRK2 methylation and memory in a sample of nontraumatized individuals (n = 568). We found that NTRK2 methylation was negatively associated with recognition memory performance. Furthermore, fMRI analyses revealed NTRK2 methylation-dependent differences in brain network activity related to recognition memory. The present study demonstrates that NTRK2 is epigenetically linked to memory functions in nontraumatized subjects and to PTSD risk and symptoms in traumatized populations.
Assuntos
Glicoproteínas de Membrana/genética , Receptor trkB/genética , Transtornos de Estresse Pós-Traumáticos/genética , Adulto , Idoso , Encéfalo/metabolismo , Metilação de DNA/genética , Epigênese Genética/genética , Feminino , Glucocorticoides/metabolismo , Humanos , Masculino , Glicoproteínas de Membrana/metabolismo , Memória/fisiologia , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Receptor trkB/metabolismo , Receptores de Glucocorticoides/metabolismo , Fatores de Risco , Ruanda/epidemiologia , Transtornos de Estresse Pós-Traumáticos/metabolismo , Sobreviventes , Uganda/epidemiologiaRESUMO
BACKGROUND: The wars in the Democratic Republic of Congo have left indelible marks on the mental health and functioning of the Congolese civilians that sought refuge in Uganda. Even though it is clear that civilians who are exposed to potentially traumatizing events in war and conflict areas develop trauma-related mental health problems, scholarly information on gender differences on exposure to different war-related traumatic events, their conditional risks to developing PTSD and whether the cumulative exposure to traumatic events affects men and women differently is still scanty. METHODS: In total, 325 (n = 143 males, n = 182 females) Congolese refugees who lived in Nakivale, a refugee settlement in the Southwestern part of Uganda were interviewed within a year after their arrival. Assessment included exposure to war-related traumatic events, and DSM-IV PTSD symptom severity. RESULTS: Our main findings were that refugees were highly exposed to war-related traumatic events with experiencing dangerous flight as the most common event for both men (97%) and women (97%). The overall high prevalence of PTSD differed among women (94%) and men (84%). The highest conditional prevalence of PTSD in women was associated with experiencing rape. The dose-response effect differed significantly between men and women with women showing higher PTSD symptom severity when experiencing low and moderate levels of potentially traumatizing event types. CONCLUSION: In conflict areas, civilians are highly exposed to different types of war-related traumatic events that expose them to high levels of PTSD symptoms, particularly women. Interventions focused at reducing mental health problems resulting from war should take the context of gender into consideration.
Assuntos
Refugiados , Transtornos de Estresse Pós-Traumáticos , Lesões Relacionadas à Guerra , Feminino , Humanos , Masculino , Caracteres Sexuais , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Uganda/epidemiologiaRESUMO
BACKGROUND: Trauma-focused therapy approaches are recommended as treatment for posttraumatic stress disorder (PTSD). This includes the treatment of trauma-related suffering in refugee populations. However, there is a lack of knowledge about symptom trajectories in refugees living in volatile conditions. This has led to fear of "retraumatisation" and general skepticism in clinicians concerning the use of exposure therapy. METHODS: To test the relevance of this concern, we investigated PTSD symptom trajectories and potentially influencing factors during the course of Narrative Exposure Therapy (NET) in a refugee sample living in Germany. Refugees filled out the PTSD Checklist prior to each treatment session and also during follow-up interviews. Therapists continuously documented positive and negative life events as well as the content of the treatment sessions. Additionally, structured clinical interviews were conducted pre-treatment and at follow-up time points. RESULTS: On average, clients presented with substantial decreases in PTSD symptoms already during and after NET. However, symptom trajectories differed and ranged from fast responders to slow responders to no immediate response during treatment. Importantly, a persistent worsening of symptoms was not observed, also not after exposure to the most distressing events. In contrast, stressful life experiences seemed to aggravate PTSD symptoms. CONCLUSIONS: Consistent with earlier studies, NET leads to clinically and behaviorally relevant reductions in PTSD symptoms both throughout and following treatment in refugees living in volatile conditions. Concerns about imaginal exposure in refugees were not substantiated. While stressful life events contributed to transient symptom increases, they weren't found to prevent the overall effectiveness of NET. TRIAL REGISTRATION: NCT02852616.
Assuntos
Terapia Implosiva , Terapia Narrativa , Refugiados , Transtornos de Estresse Pós-Traumáticos , Adolescente , Adulto , Feminino , Alemanha , Humanos , Masculino , Pessoa de Meia-Idade , Refugiados/psicologia , Transtornos de Estresse Pós-Traumáticos/terapia , Adulto JovemRESUMO
Refugees affected by multiple traumatic stressors are at high risk for developing trauma-related mental disorders, including posttraumatic stress disorder (PTSD), depression, and insomnia, which is sometimes overlooked. The present study examined the effectiveness of narrative exposure therapy (NET) on trauma-related symptoms in a sample of North Korean refugee youth. We focused on sleep patterns in addition to changes in symptom severity for PTSD, depression, and internalizing and externalizing symptoms. North Korean refugee youth (N = 20) with PTSD were assigned to either an NET-based treatment group or a control group, which consisted of treatment as usual (TAU). There were clinically significant reductions in PTSD, depression, and internalizing and externalizing symptoms for the NET group, Hedges' g = 3.6, but not the TAU group. The change in diagnostic status for PTSD was more notable for participants in the NET group compared to the TAU group. Of note, NET also produced a significant improvement in insomnia symptoms and sleep quality, Hedges' g = 2.1. The substantial recovery regarding overall posttraumatic symptoms in the NET group was observed 2 weeks after the end of treatment and remained stable at 6-month follow-up. The results of the present study suggest that NET may be a treatment option for traumatized North Korean refugee youth and may also be effective for the treatment of sleep problems that arise from traumatic experiences.
Assuntos
Refugiados/psicologia , Transtornos de Estresse Pós-Traumáticos/terapia , Adolescente , Adulto , Estudos de Casos e Controles , República Democrática Popular da Coreia/etnologia , Depressão/complicações , Feminino , Humanos , Terapia Implosiva , Masculino , República da Coreia , Transtornos do Sono-Vigília/complicações , Transtornos de Estresse Pós-Traumáticos/complicações , Resultado do Tratamento , Adulto JovemRESUMO
During deployment, soldiers face situations in which they are not only exposed to violence but also have to perpetrate it themselves. This study investigates the role of soldiers' levels of posttraumatic stress disorder (PTSD) symptoms and appetitive aggression, that is, a lust for violence, for their engaging in violence during deployment. Furthermore, factors during deployment influencing the level of PTSD symptoms and appetitive aggression after deployment were examined for a better comprehension of the maintenance of violence. Semi-structured interviews were conducted with 468 Burundian soldiers before and after a 1-year deployment to Somalia. To predict violent acts during deployment (perideployment) as well as appetitive aggression and PTSD symptom severity after deployment (postdeployment), structural equation modeling was utilized. Results showed that the number of violent acts perideployment was predicted by the level of appetitive aggression and by the severity of PTSD hyperarousal symptoms predeployment. In addition to its association with the predeployment level, appetitive aggression postdeployment was predicted by violent acts and trauma exposure perideployment as well as positively associated with unit support. PTSD symptom severity postdeployment was predicted by the severity of PTSD avoidance symptoms predeployment and trauma exposure perideployment, and negatively associated with unit support. This prospective study reveals the importance of appetitive aggression and PTSD hyperarousal symptoms for the engagement in violent acts during deployment, while simultaneously demonstrating how these phenomena may develop in mutually reinforcing cycles in a war setting.
Assuntos
Agressão , Militares , Transtornos de Estresse Pós-Traumáticos , Violência , Humanos , Estudos Longitudinais , Estudos Prospectivos , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/psicologiaRESUMO
Individuals who perpetrate violence may likely perceive violence as appealing and infliction of violence to derive pleasure is termed as appetitive aggression. Individuals who were abducted as children into an armed group often experience a higher number of traumatic event types, that is traumatic load and are usually socialized in a violence-endorsing environment. This study aims to investigate the interaction between age at initial abduction with that of traumatic load, and their influence on appetitive aggression along with perpetration of violent acts by former members of an armed rebel group of both sexes. Semi-structured interviews were conducted among a target group of formerly abducted rebel-war survivors (including participants with and without combat experience) from Northern Uganda. Participants included 596 women and 570 men with N = 1,166 (Mage = 32.58, SDage = 9.76, range: 18-80 years). We conducted robust linear regression models to investigate the influence of age at initial abduction, traumatic load, combat experience, and biological sex on appetitive aggression as well as their perpetrated violent acts. Our study shows, appetitive aggression and the number of perpetrated violent acts were specifically increased in individuals who were abducted young, experienced several traumatic events in their lifetime, and with previous combat experience. For perpetrated violence men showed increased levels whereas for appetitive aggression the association was independent of biological sex. Therefore, early abducted individuals with a higher traumatic load, who have combat experience, need to be given special intervention to prevent any further violence.
Assuntos
Agressão , Conflitos Armados , Transtornos de Estresse Pós-Traumáticos , Criança , Crime , Feminino , Humanos , Masculino , Uganda , ViolênciaRESUMO
BACKGROUND: Post-traumatic stress but also aggressive attitudes and behaviour can be found in adolescents living in a context of ongoing community and gang violence in the low-income urban areas of Cape Town, South Africa. AIMS: We investigated the long-term effects (15-20 months after therapy) of (a) Narrative Exposure Therapy for Forensic Offender Rehabilitation (FORNET) and (b) the cognitive behavioural intervention 'Thinking for a Change' (CBT) on post-traumatic stress disorder (PTSD) and aggression compared with a waiting list. METHOD: Fifty-four young males participated in the treatment trial, of which 17 completed the FORNET intervention, 11 the CBT intervention, and 26 were on a waiting list. The primary outcome was the change score for the Appetitive Aggression Scale; secondary outcomes were the PTSD Symptom Scale-Interview change scores, and the number of perpetrated violent event types. RESULTS: The reduction in scores for PTSD that had been observed in FORNET completers at the first follow-up were still significant at the second long-term follow-up (Cohen's d = 0.86). In this treatment arm (FORNET), the scores for appetitive aggression were also significantly reduced (Cohen's d = 1.00). There were no significant changes observed for CBT or for the waiting list. CONCLUSIONS: The study indicates that FORNET can successfully reduce post-traumatic stress as well as the attraction to violence even for individuals living under conditions of continuous traumatic stress.
Assuntos
Agressão/psicologia , Grupo Associado , Psicoterapia , Meio Social , Transtornos de Estresse Pós-Traumáticos/terapia , Violência/psicologia , Adolescente , Terapia Cognitivo-Comportamental , Seguimentos , Humanos , Terapia Implosiva , Masculino , Terapia Narrativa , Prisioneiros/psicologia , Fatores de Risco , Ajustamento Social , África do Sul , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Transtornos de Estresse Pós-Traumáticos/psicologia , Adulto JovemRESUMO
BACKGROUND: Anecdotal evidence suggests the frequently traumatic nature of female genital mutilation (FGM). At present, systematic research on the psychological sequelae of this tradition has remained limited. The study provides preliminary, high-quality psychodiagnostic data on potential psychopathological consequences of FGM, with a focus on posttraumatic stress disorder (PTSD), shutdown dissociation and other stress-related variables. METHODS: We investigated a convenience sample of N = 167 women, supported by the women's affairs headquarters in Jijiga (capital of the Ethiopian Somali Region) and a local Ethiopian non-governmental organization. Our main outcome measures were PTSD (PSS-I) and shutdown dissociation (ShuD). We also assessed depression and anxiety (HSCL-25), major depression, substance abuse and dependence, suicidality and psychotic disorders (M.I.N.I.; sub-scales A., B., K., and L.). In addition, we collected hair samples to assess hair cortisol concentrations (HCC) as a neuroendocrinological measure. RESULTS: The majority of women endured FGM (FGM I: 36%, FGM II/III: 52%) and, regardless of the level of the physical invasiveness, almost all women reported having felt intense fear and/or helplessness. FGM II/III, the more invasive form, was associated with a greater vulnerability to PTSD symptoms (p < .001) and shutdown dissociation (p < .001). Symptoms of depression (p < .05) and anxiety (p < .01) were also elevated. Random forest regression with conditional inference trees revealed evidence of an alteration of the cortisol levels in relation to the age when FGM was experienced (< 1 year) and the invasiveness of the procedure. CONCLUSION: More extensive forms of FGM are associated with more severe psychopathological symptoms - particularly with an increased vulnerability to PTSD. Higher hair cortisol levels in women who experienced FGM before their first year of age or had more severe forms of FGM indicate long-term neuroendocrinological consequences of FGM and trauma in general on the stress system.
Assuntos
Circuncisão Feminina/psicologia , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Ansiedade/etiologia , Depressão/etiologia , Transtornos Dissociativos/diagnóstico , Transtornos Dissociativos/etiologia , Transtornos Dissociativos/psicologia , Etiópia , Feminino , Cabelo/química , Humanos , Hidrocortisona/metabolismo , Entrevistas como Assunto , Pessoa de Meia-Idade , Transtornos de Estresse Pós-Traumáticos/etiologia , Transtornos de Estresse Pós-Traumáticos/psicologia , Adulto JovemRESUMO
OBJECTIVE: The mental health needs of women affected by intimate partner violence (IPV) and living under continuous domestic violence are currently not well understood. The present study investigates the feasibility and efficacy of narrative exposure therapy (NET), compared with commonly used counselling (treatment-as-usual, TAU), in a group of currently IPV-affected women in Tehran, Iran. METHOD: Forty-five IPV-affected women with a diagnosis of post-traumatic stress disorder (PTSD) were randomized to 10 to 12 sessions of either NET (n = 24) or TAU (n = 21). Primary outcome measures, including PTSD, depression, and perceived stress symptoms, were examined at pretreatment and 3- and 6-month follow-ups. IPV experiences, general lifetime traumatic events, childhood adversities, borderline symptoms, and daily functioning impairment were also inspected. RESULTS: NET participants showed a significantly greater symptom reduction in comparison with the TAU group in PTSD, depression, and perceived stress at both follow-ups. Improvement in daily functioning and reduction of IPV experiences and borderline symptoms at 3- and 6-month follow-ups were pronounced but not significantly different between the two treatment groups. CONCLUSION: IPV-affected women living under continuous threat and violence would benefit from trauma-focused interventions such as NET.
Assuntos
Terapia Implosiva/métodos , Violência por Parceiro Íntimo/psicologia , Terapia Narrativa/métodos , Transtornos de Estresse Pós-Traumáticos/psicologia , Transtornos de Estresse Pós-Traumáticos/terapia , Adulto , Estudos de Viabilidade , Feminino , Humanos , Irã (Geográfico) , Resultado do TratamentoRESUMO
Most individuals diagnosed with borderline personality disorder (BPD) have been exposed to severe and traumatic stressors and thus frequently present with symptoms of a posttraumatic stress disorder (PTSD). Severe sleep disturbances often accompany these complex cases, but changes of sleep parameters during therapy and the impact of sleep on treatment response have barely been studied. Narrative Exposure Therapy (NET) is an evidence-based approach for the treatment of trauma-related psychological disorders. To investigate the effect of NET on sleep in patients with BPD and comorbid PTSD, we screened 45 inpatients and outpatients who met the inclusion criteria of both diagnoses according to DSM-IV and who had a minimum of 2 weeks' stable medication. Patients were allocated to NET (N = 13) or treatment as usual (TAU; N = 8) in blocks. Polysomnographies and psychological questionares were performed before, directly and 6 months after the last therapy session. The aim of this pilot study was to investigate the effectiveness of trauma therapy by NET on sleep quantity (total sleep time) and sleep continuity (sleep efficiency and awakenings) in patients with comorbid BPD and PTSD. Participants of the NET group compared with those who received TAU showed an increased reduction in sleep latency from baseline to the end of therapy and a reduction in arousals over time. Patients with longer pre-treatment total sleep time and pre-treatment REM sleep duration showed a better outcome of NET with respect to PTSD symptoms. NET seems not lead to a change in sleep for the worse during therapy and seems to improve sleep as good as treatment as usual. Furthermore, our results provide evidence of an influence of sleep structure at baseline on treatment success later on.
Assuntos
Transtorno da Personalidade Borderline/complicações , Transtorno da Personalidade Borderline/terapia , Terapia Implosiva , Sono , Transtornos de Estresse Pós-Traumáticos/complicações , Transtornos de Estresse Pós-Traumáticos/terapia , Adulto , Transtorno da Personalidade Borderline/fisiopatologia , Comorbidade , Humanos , Terapia Implosiva/métodos , Projetos Piloto , Polissonografia , Escalas de Graduação Psiquiátrica , Psicotrópicos/uso terapêutico , Sono/fisiologia , Transtornos de Estresse Pós-Traumáticos/fisiopatologia , Fatores de Tempo , Resultado do TratamentoRESUMO
It has been postulated that the violent behavior that characterizes armed conflict is reinforced by the possibility of receiving rewards. The present study examined the potential influence of two types of rewards in an ongoing setting of conflict: extrinsic and intrinsic rewards. Former combatants active in the Democratic Republic of the Congo (N = 198) were interviewed and questioned about the way they were recruited, the offenses they committed during combat, their level of perceived intrinsic rewards (i.e., appetitive perception of violence), and the number of received extrinsic rewards during their time in the armed group (e.g., money, extra food, alcohol, or drugs). A moderated multiple regression analysis showed that the number of received extrinsic rewards and the level of intrinsic rewards were significantly positively related to the number of different types of offenses committed. In contrast to our expectations and previous findings, the recruitment type (forced conscription vs. voluntary enlistment) did not moderate this relation. Our findings suggest that both types of rewards play a role in committing violence during combat. We suggest, therefore, that reintegration programs should not only consider the influence of extrinsic rewards, but also need to address the influence of intrinsic rewards to counter violent behavior among former combatants. Aggr. Behav. 43:241-250, 2017. © 2016 Wiley Periodicals, Inc.
Assuntos
Recompensa , Violência/psicologia , Guerra , Adolescente , Adulto , Estudos Transversais , República Democrática do Congo , Humanos , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
BACKGROUND: Depending on the exposure to traumatic stressors and combat, 20% to 50% of ex-combatants present with trauma-related disorders, and more than half of the members of armed groups have a proclivity to violence. Therefore, psychotherapeutic assistance should address both, trauma-related suffering and the lowered threshold for aggressive behaviour. OBJECTIVE: Supporting the demobilization process of ex-combatants in the eastern DR-Congo, we implemented a version of Narrative Exposure Therapy adapted for Forensic Offender Rehabilitation (FORNET). METHOD: In two successive dissemination stages (DS), local counsellors conducted FORNET. In DS1, they were trained by clinical experts, and in DS2, the by then experienced counsellors trained and supervised a second group of local counsellors (DS2). The training consisted of a 3-week workshop covering theoretical concepts and practical therapeutic skills. In DS1 and DS2, a total of 98 demobilizing combatants received an intervention; treatment-as-usual served as the control condition. Posttraumatic stress disorder, appetitive aggression, depression severity and drug dependence were assessed prior to the intervention and 6 and 12 months later; additionally, we assessed reintegration success. RESULTS: Six months post-intervention, FORNET significantly reduced Posttraumatic stress disorder symptoms but had less effect on the trait of appetitive aggression; moreover, beneficial effects were found for depression severity and drug dependence as well as for reintegration indices. Treatment gains were retained at 12 months. CONCLUSIONS: Individuals without previous training in psychotherapy can learn to effectively apply the brief intervention FORNET and support the demobilization process in ongoing conflicts. The study suggests that it is possible to pass down psychotherapeutic techniques over generations of counsellors. © 2015 The Authors. Clinical Psychology & Psychotherapy published by John Wiley & Sons Ltd. KEY PRACTITIONER MESSAGE: Posttraumatic stress symptoms, depression and clinically relevant levels of drug dependence can effectively be reduced with a version of Narrative Exposure Therapy (NET) adapted for Forensic Offender Rehabilitation (FORNET). The intervention is effective in the context of ongoing conflict. Individuals without previous training in psychotherapy can learn to effectively apply the brief intervention FORNET. It is possible to pass down psychotherapeutic techniques like FORNET over generations of counsellors. Psychotherapeutic interventions like FORNET may facilitate the transition to peace in war-torn regions.
Assuntos
Agressão/psicologia , Transtorno Depressivo/terapia , Terapia Narrativa/métodos , Transtornos de Estresse Pós-Traumáticos/terapia , Transtornos Relacionados ao Uso de Substâncias/terapia , Adulto , Congo , Transtorno Depressivo/complicações , Transtorno Depressivo/psicologia , Seguimentos , Humanos , Masculino , Índice de Gravidade de Doença , Transtornos de Estresse Pós-Traumáticos/complicações , Transtornos de Estresse Pós-Traumáticos/psicologia , Transtornos Relacionados ao Uso de Substâncias/complicações , Transtornos Relacionados ao Uso de Substâncias/psicologia , Adulto JovemRESUMO
BACKGROUND: Child maltreatment poses a risk to children and adolescents' mental health and may also affect cognitive functioning. Also harsh discipline has been frequently associated with mental health problems. However, within societies in which harsh disciplinary methods are culturally normed and highly prevalent less is known about the association between harsh punishment, mental health problems, and cognitive functioning. METHODS: In a cross-sectional study, we conducted structured clinical interviews with a sample of Tanzanian primary school students assessing exposure to harsh discipline (Maltreatment and Abuse Chronology of Exposure), internalizing problems (Strength and Difficulties Questionnaire, Children's Depression Inventory), and working memory (Corsi Blocktapping Task). School performance was measured by using the exam grades in 4 core subjects. The 409 children (52% boys) had a mean age of 10.5 years (range: 6 - 15). RESULTS: Using structural equation modeling, a strong relationship was found between harsh discipline and internalizing problems (ß = .47), which were related to lower working memory capacity (ß = -.17) and school performance (ß = -.17). CONCLUSIONS: The present study suggests that harsh discipline is closely linked to children's internalizing mental health problems, which are in turn associated with lower cognitive functioning and school performance. Given the high rates of harsh discipline experienced by children in East African homes and elsewhere, the findings of the present study emphasize the need to inform the population at large about the potentially adverse consequences associated with harsh discipline.
Assuntos
Maus-Tratos Infantis/psicologia , Transtornos do Comportamento Infantil/psicologia , Mecanismos de Defesa , Punição/psicologia , Adolescente , Criança , Transtornos do Comportamento Infantil/epidemiologia , Cognição , Estudos Transversais , Depressão/psicologia , Feminino , Humanos , Masculino , Saúde Mental , Prevalência , Inquéritos e Questionários , Tanzânia/epidemiologiaRESUMO
BACKGROUND: While observational studies show that an active lifestyle including cognitive, physical, and social activities is associated with a reduced risk of cognitive decline and dementia, experimental evidence from corresponding training interventions is more inconsistent with less pronounced effects. The aim of this study was to evaluate and compare training- and lifestyle-related changes in cognition. This is the first study investigating these associations within the same time period and sample. METHODS: Fifty-four older adults at risk of dementia were assigned to 10 weeks of physical training, cognitive training, or a matched wait-list control condition. Lifestyle was operationalized as the variety of self-reported cognitive, physical, and social activities before study participation. Cognitive performance was assessed with an extensive test battery prior to and after the intervention period as well as at a 3-month follow-up. Composite cognition measures were obtained by means of a principal component analysis. Training- and lifestyle-related changes in cognition were analyzed using linear mixed effects models. The strength of their association was compared with paired t-tests. RESULTS: Neither training intervention improved global cognition in comparison to the control group (p = .08). In contrast, self-reported lifestyle was positively associated with benefits in global cognition (p < .001) and specifically in memory (p < .001). Moreover, the association of an active lifestyle with cognitive change was significantly stronger than the benefits of the training interventions with respect to global cognition (ps < .001) and memory (ps < .001). CONCLUSIONS: The associations of an active lifestyle with cognitive change over time in a dementia risk group were stronger than the effects of short-term, specific training interventions. An active lifestyle may differ from training interventions in dosage and variety of activities as well as intrinsic motivation and enjoyment. These factors might be crucial for designing novel interventions, which are more efficient than currently available training interventions. TRIAL REGISTRATION: ClinicalTrials.gov Identifier NCT01061489 . Registered February 2, 2010.
Assuntos
Cognição/fisiologia , Disfunção Cognitiva/prevenção & controle , Demência/prevenção & controle , Exercício Físico/psicologia , Estilo de Vida , Memória/fisiologia , Comportamento Social , Idoso , Idoso de 80 Anos ou mais , Disfunção Cognitiva/psicologia , Demência/psicologia , Terapia por Exercício/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Autorrelato , Resultado do TratamentoRESUMO
Child abuse is associated with a number of emotional and behavioral problems. Nevertheless, it has been argued that these adverse consequences may not hold for societies in which many of the specific acts of abuse are culturally normed. Epigenetic modifications in the genes of the hypothalamus-pituitary-adrenal axis may provide a potential mechanism translating abuse into altered gene expression, which subsequently results in behavioral changes. Our investigation took place in Tanzania, a society in which many forms of abuse are commonly employed as disciplinary methods. We included 35 children with high exposure and compared them to 25 children with low exposure. Extreme group comparisons revealed that children with high exposure reported more mental health problems. Child abuse was associated with differential methylation in the proopiomelanocortin gene (POMC), measured both in saliva and in blood. Hierarchical clustering based on the methylation of the POMC gene found two distinct clusters. These corresponded with children's self-reported abuse, with two-thirds of the children allocated into their respective group. Our results emphasize the consequences of child abuse based on both molecular and behavioral grounds, providing further evidence that acts of abuse affect children, even when culturally acceptable. Furthermore, on a molecular level, our findings strengthen the credibility of children's self-reports.
Assuntos
Maus-Tratos Infantis/psicologia , Transtornos do Comportamento Infantil/etiologia , Epigênese Genética , Saúde Mental , Pró-Opiomelanocortina/genética , Adolescente , Criança , Transtornos do Comportamento Infantil/genética , Transtornos do Comportamento Infantil/psicologia , Feminino , Humanos , Sistema Hipotálamo-Hipofisário/metabolismo , Masculino , Sistema Hipófise-Suprarrenal/metabolismo , TanzâniaRESUMO
In the last decade there has been an exponential increase in knowledge about the genetic basis of complex human traits, including neuropsychiatric disorders. It is not clear, however, to what extent this knowledge can be used as a starting point for drug identification, one of the central hopes of the human genome project. The aim of the present study was to identify memory-modulating compounds through the use of human genetic information. We performed a multinational collaborative study, which included assessment of aversive memory--a trait central to posttraumatic stress disorder--and a gene-set analysis in healthy individuals. We identified 20 potential drug target genes in two genomewide-corrected gene sets: the neuroactive ligand-receptor interaction and the long-term depression gene set. In a subsequent double-blind, placebo-controlled study in healthy volunteers, we aimed at providing a proof of concept for the genome-guided identification of memory modulating compounds. Pharmacological intervention at the neuroactive ligand-receptor interaction gene set led to significant reduction of aversive memory. The findings demonstrate that genome information, along with appropriate data mining methodology, can be used as a starting point for the identification of memory-modulating compounds.
Assuntos
Descoberta de Drogas/métodos , Genoma Humano/genética , Memória/efeitos dos fármacos , Transtornos de Estresse Pós-Traumáticos/tratamento farmacológico , Transtornos de Estresse Pós-Traumáticos/genética , Sobreviventes/psicologia , Adulto , Estudos Cross-Over , Mineração de Dados/métodos , Difenidramina/farmacologia , Feminino , Fluorometria , Genótipo , Humanos , Entrevistas como Assunto , Modelos Logísticos , Masculino , Memória/fisiologia , Oligonucleotídeos/genética , Reação em Cadeia da Polimerase , Polimorfismo de Nucleotídeo Único/genética , Suíça , Adulto JovemRESUMO
The Female Genital Mutilation (FGM) is still practiced in many countries and mainly performed for traditional reasons. In this study, the relationship of the FGM type (type I and type III) with anxiety, depression, and posttraumatic stress disorder as well as the attitude toward FGM was analyzed. For this purpose the data of N=109 of FGM type I and III affected women from Ethiopia were collected. Analyses show moderation effects. It was found that the symptoms of depression and PTSD were less pronounced with a positive attitude towards the FGM in the sample of severely mutilated women (type III). It seems that the attitude toward FGM plays a major role in enhancing social recognition of those affected, thus better coping can take place. As well, this study shows the importance of the attitude of FGM tradition in the population to protect young girls prone for FGM.
Assuntos
Adaptação Psicológica , Circuncisão Feminina/psicologia , Países em Desenvolvimento , Adolescente , Adulto , Transtornos de Ansiedade/diagnóstico , Transtornos de Ansiedade/psicologia , Criança , Pré-Escolar , Circuncisão Feminina/classificação , Transtorno Depressivo/diagnóstico , Transtorno Depressivo/psicologia , Etiópia , Feminino , Humanos , Fatores de Proteção , Fatores de Risco , Estigma Social , Somália , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Transtornos de Estresse Pós-Traumáticos/psicologia , Inquéritos e QuestionáriosRESUMO
Recent evidence suggests that altered expression and epigenetic modification of the glucocorticoid receptor gene (NR3C1) are related to the risk of post-traumatic stress disorder (PTSD). The underlying mechanisms, however, remain unknown. Because glucocorticoid receptor signaling is known to regulate emotional memory processes, particularly in men, epigenetic modifications of NR3C1 might affect the strength of traumatic memories. Here, we found that increased DNA methylation at the NGFI-A (nerve growth factor-induced protein A) binding site of the NR3C1 promoter was associated with less intrusive memory of the traumatic event and reduced PTSD risk in male, but not female survivors of the Rwandan genocide. NR3C1 methylation was not significantly related to hyperarousal or avoidance symptoms. We further investigated the relationship between NR3C1 methylation and memory functions in a neuroimaging study in healthy subjects. Increased NR3C1 methylation-which was associated with lower NR3C1 expression-was related to reduced picture recognition in male, but not female subjects. Furthermore, we found methylation-dependent differences in recognition memory-related brain activity in men. Together, these findings indicate that an epigenetic modification of the glucocorticoid receptor gene promoter is linked to interindividual and gender-specific differences in memory functions and PTSD risk.
Assuntos
Epigênese Genética/genética , Genocídio/psicologia , Memória , Receptores de Glucocorticoides/genética , Transtornos de Estresse Pós-Traumáticos , Sobreviventes/psicologia , Adolescente , Adulto , Encéfalo/irrigação sanguínea , Encéfalo/patologia , Metilação de DNA , Feminino , Estudos de Associação Genética , Genótipo , Humanos , Processamento de Imagem Assistida por Computador , Masculino , Testes Neuropsicológicos , Oxigênio/sangue , Regiões Promotoras Genéticas/genética , Escalas de Graduação Psiquiátrica , Risco , Ruanda , Transtornos de Estresse Pós-Traumáticos/genética , Transtornos de Estresse Pós-Traumáticos/patologia , Transtornos de Estresse Pós-Traumáticos/psicologia , Suíça , Adulto JovemRESUMO
War-related trauma exposure has been linked to aggression and enhanced levels of community and family violence, suggesting a cycle of violence. Reactive aggression--an aggressive reaction to a perceived threat--has been associated with posttraumatic stress disorder (PTSD). In contrast, appetitive aggression--a hedonic, intrinsically motivated form of aggression--seems to be negatively related to PTSD in offender and military populations. This study examined the associations between exposure to violence, trauma-related symptoms and aggression in a civilian population. In semistructured interviews, 290 Congolese refugees were questioned about trauma exposure, PTSD symptoms, and aggression. War-related trauma exposure correlated positively with exposure to family and community violence in the past month (r = .31, p < .001), and appetitive (r = .18, p = .002) and reactive aggression (r = .29, p < .001). The relationship between war-related trauma exposure and reactive aggressive behavior was mediated by PTSD symptoms and appetitive aggression. In a multiple sequential regression analysis, trauma exposure (ß = .43, p < .001) and reactive aggression (ß = .36, p < .001) were positively associated with PTSD symptoms, whereas appetitive aggression was negatively associated (ß = -.13, p = .007) with PTSD symptoms. Our findings were congruent with the cycle of violence hypothesis and indicate a differential relation between distinct subtypes of aggression and PTSD.