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1.
J Gambl Stud ; 36(2): 477-498, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31620927

RESUMO

Compared to the general population, military personnel are particularly vulnerable to developing gambling problems. The present study examined the presentation of gambling-including gambling frequency, personal thoughts on reducing gambling and recommendations from others to reduce gambling-across these populations. Additionally, the study measured the association between gambling and various psychosocial risk and protective factors-including psychological distress, suicidal ideation, external encouragement to reduce substance use, days out of role, personal wellbeing, resilience, social support and intimate bonds. Data was extracted from the Global Health & Wellbeing Survey, an online self-report survey conducted in Australia, Canada, New Zealand, the United Kingdom and the United States. Of the 10,765 eligible respondents, 394 were military veterans and 337 were active military personnel. Consistent with previous research, a higher proportion of gambling behaviours were observed in both current and ex-serving military samples, compared to the general population. To varying degrees, significant associations were found between the different gambling items and all psychosocial risk and protective factors in the general population sample. However, the military sample yielded only one significant association between gambling frequency and the protective factor 'resilience'. A post hoc stepwise linear regression analysis demonstrated the possible mediating role resilience plays between gambling frequency and other psychosocial risk (psychological distress, and suicidal thoughts and behaviour) and protective factors (personal wellbeing) for the military sample. Given the findings, it is recommended that routine screening tools identifying problem gambling are used within the military, and subsequent resilience focused interventions are offered to at risk personnel.


Assuntos
Jogo de Azar/psicologia , Militares/psicologia , Resiliência Psicológica , Apoio Social , Veteranos/psicologia , Adulto , Austrália , Canadá , Feminino , Jogo de Azar/epidemiologia , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Militares/estatística & dados numéricos , Nova Zelândia , Fatores de Proteção , Autorrelato , Transtornos Relacionados ao Uso de Substâncias/psicologia , Ideação Suicida , Inquéritos e Questionários , Reino Unido , Estados Unidos , Veteranos/estatística & dados numéricos
2.
J Ment Health ; 29(4): 410-417, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31241374

RESUMO

Background: Two common barriers to help-seeking are lack of awareness of appropriate services, and low mental health literacy. The headspace awareness campaigns are designed to address these factors.Aims: To examine whether distance from a headspace centre affects community awareness of headspace, and whether general awareness of headspace changed between 2008 and 2015.Method: Responses from 4707 participants aged 12-25 years, collected in 2008 and 2015, were analysed. The effect of headspace centre location on awareness of services was assessed by comparing awareness between those living in headspace areas (within 20 km of a centre) and those who were not. Change in awareness between 2008 and 2015 was assessed.Results: Awareness of headspace and its services was significantly greater among those living in headspace areas than among those living further away. Within headspace areas, awareness increased by 27% between 2008 and 2015. Prompted and unprompted awareness were significantly greater in 2015 than in 2008.Conclusions: Awareness of headspace has increased over time; however, innovative awareness campaigns are needed for those residing in non-headspace areas. Continued funding to increase headspace's national coverage, improving mental health literacy and service access for youth and their families, particularly those living in non-headspace areas, is needed.


Assuntos
Letramento em Saúde , Comportamento de Busca de Ajuda , Serviços de Saúde Mental , Adolescente , Adulto , Austrália , Criança , Feminino , Acessibilidade aos Serviços de Saúde , Humanos , Masculino , Saúde Mental , Desenvolvimento de Programas , Adulto Jovem
3.
Mol Psychiatry ; 23(8): 1794-1797, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-28993711

RESUMO

Maternal immune activation has been highlighted as a factor that might increase the risk and severity of autism spectrum disorder (ASD) in children. Preclinical animal evidence shows that immune activation in mothers during pregnancy causes ASD-like behavioural traits in offspring. To this point, there has been no investigation of whether immune system activation in human mothers during pregnancy is associated with more severe symptoms in children with ASD. In this study, data from an existing ASD cohort (N=220) were analysed to investigate whether immune conditions in the mother were associated with greater severity of autism-related symptoms. Results showed that children whose mothers reported a history of immune activation (allergies and asthma) had significantly higher scores on the Social Responsiveness Scale (SRS; P=0.016), suggesting more severe social impairment symptoms in these children. This increasing severity of social impairment symptoms was further shown on the SRS cognition (P=0.007) and mannerisms (P=0.002) subscales. While immune history was associated with an increase in the severity of social impairment symptoms, history of autoimmune conditions in the mother did not have any effect in this cohort. To the best of our knowledge, this study is the first to show an association between immune activation history in the mother and increased ASD symptom severity in children with ASD. These findings support the idea of an immune system-mediated subtype in ASD, where the immune history of the mother may be an important factor.


Assuntos
Transtorno do Espectro Autista/imunologia , Transtorno do Espectro Autista/psicologia , Hipersensibilidade/imunologia , Comportamento Social , Adulto , Transtorno do Espectro Autista/epidemiologia , Doenças Autoimunes/epidemiologia , Doenças Autoimunes/imunologia , Criança , Estudos de Coortes , Suscetibilidade a Doenças/imunologia , Feminino , Humanos , Hipersensibilidade/epidemiologia , Masculino , Mães , Gravidez , Efeitos Tardios da Exposição Pré-Natal , Escalas de Graduação Psiquiátrica , Índice de Gravidade de Doença
4.
Mol Psychiatry ; 22(6): 900-909, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-27137745

RESUMO

The neuro-anatomical substrates of major depressive disorder (MDD) are still not well understood, despite many neuroimaging studies over the past few decades. Here we present the largest ever worldwide study by the ENIGMA (Enhancing Neuro Imaging Genetics through Meta-Analysis) Major Depressive Disorder Working Group on cortical structural alterations in MDD. Structural T1-weighted brain magnetic resonance imaging (MRI) scans from 2148 MDD patients and 7957 healthy controls were analysed with harmonized protocols at 20 sites around the world. To detect consistent effects of MDD and its modulators on cortical thickness and surface area estimates derived from MRI, statistical effects from sites were meta-analysed separately for adults and adolescents. Adults with MDD had thinner cortical gray matter than controls in the orbitofrontal cortex (OFC), anterior and posterior cingulate, insula and temporal lobes (Cohen's d effect sizes: -0.10 to -0.14). These effects were most pronounced in first episode and adult-onset patients (>21 years). Compared to matched controls, adolescents with MDD had lower total surface area (but no differences in cortical thickness) and regional reductions in frontal regions (medial OFC and superior frontal gyrus) and primary and higher-order visual, somatosensory and motor areas (d: -0.26 to -0.57). The strongest effects were found in recurrent adolescent patients. This highly powered global effort to identify consistent brain abnormalities showed widespread cortical alterations in MDD patients as compared to controls and suggests that MDD may impact brain structure in a highly dynamic way, with different patterns of alterations at different stages of life.


Assuntos
Córtex Cerebral/patologia , Transtorno Depressivo Maior/diagnóstico por imagem , Transtorno Depressivo Maior/patologia , Adolescente , Adulto , Encéfalo/patologia , Córtex Cerebral/diagnóstico por imagem , Feminino , Lobo Frontal/patologia , Substância Cinzenta/patologia , Giro do Cíngulo/patologia , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Neuroimagem/métodos , Neuroimagem/psicologia , Córtex Pré-Frontal/patologia , Lobo Temporal/patologia
5.
Psychol Med ; 47(7): 1323-1334, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28091344

RESUMO

BACKGROUND: Autism spectrum disorders (ASDs) are pervasive and multifactorial neurodevelopmental conditions, characterized by impairments in social communication and interaction, and restricted, repetitive patterns of behaviour, interests or activities. Treatment options to ameliorate symptoms of ASDs are limited. Heterogeneity complicates the quest for personalized medicine in this population. Our aim was to investigate if there are baseline characteristics of patients that moderate response or trial design features that impede the identification of efficacious interventions for ASDs. METHOD: Literature searches of EMBASE, MEDLINE and PsycINFO identified 43 studies for qualitative assessment of baseline characterization of participants and 37 studies for quantitative analysis of moderators of treatment response. Criteria included blinded randomized controlled trials (RCTs) in paediatric ASD, with at least 10 participants per arm or 20 overall, of oral treatments, including pharmacological interventions and dietary supplements. RESULTS: Random-effects meta-analysis of 1997 participants (81% male) identified three moderators associated with an increase in treatment response: trials located in Europe and the Middle-East; outcome measures designated primary status; and the type of outcome measure. Inconsistent reporting of baseline symptom severity and intellectual functioning prevented analysis of these variables. Qualitative synthesis of baseline characteristics identified at least 31 variables, with only age and gender reported in all trials. Biological markers were included in six RCTs. CONCLUSIONS: Few trials reported adequate baseline characteristics to permit detailed analysis of response to treatment. Consideration of geographical location, baseline severity and intellectual function is required to ensure generalizability of results. The use of biological markers and correlates in ASD trials remains in its infancy. There is great need to improve the application of baseline characterization and incorporation of biological markers and correlates to permit selection of participants into homogeneous subgroups and to inform response to treatment in ASD.


Assuntos
Transtorno do Espectro Autista/dietoterapia , Transtorno do Espectro Autista/tratamento farmacológico , Avaliação de Resultados em Cuidados de Saúde/estatística & dados numéricos , Projetos de Pesquisa/estatística & dados numéricos , Criança , Humanos , Avaliação de Resultados em Cuidados de Saúde/normas , Projetos de Pesquisa/normas
6.
Psychol Med ; 47(12): 2061-2070, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28393749

RESUMO

BACKGROUND: Optimizing functional recovery in young individuals with severe mental illness constitutes a major healthcare priority. The current study sought to quantify the cognitive and clinical factors underpinning academic and vocational engagement in a transdiagnostic and prospective youth mental health cohort. The primary outcome measure was 'not in education, employment or training' ('NEET') status. METHOD: A clinical sample of psychiatric out-patients aged 15-25 years (n = 163) was assessed at two time points, on average, 24 months apart. Functional status, and clinical and neuropsychological data were collected. Bayesian structural equation modelling was used to confirm the factor structure of predictors and cross-lagged effects at follow-up. RESULTS: Individually, NEET status, cognitive dysfunction and negative symptoms at baseline were predictive of NEET status at follow-up (p < 0.05). Baseline cognitive functioning was the only predictor of follow-up NEET status in the multivariate Bayesian model, while controlling for baseline NEET status. For every 1 s.d. deficit in cognition, the probability of being disengaged at follow-up increased by 40% (95% credible interval 19-58%). Baseline NEET status predicted poorer negative symptoms at follow-up (ß = 0.24, 95% credible interval 0.04-0.43). CONCLUSIONS: Disengagement with education, employment or training (i.e. being NEET) was reported in about one in four members of this cohort. The initial level of cognitive functioning was the strongest determinant of future NEET status, whereas being academically or vocationally engaged had an impact on future negative symptomatology. If replicated, these findings support the need to develop early interventions that target cognitive phenotypes transdiagnostically.


Assuntos
Transtorno Bipolar/epidemiologia , Disfunção Cognitiva/epidemiologia , Transtorno Depressivo/epidemiologia , Escolaridade , Transtornos Psicóticos/epidemiologia , Desemprego/estatística & dados numéricos , Adolescente , Adulto , Comorbidade , Feminino , Seguimentos , Humanos , Masculino , Adulto Jovem
7.
Mol Psychiatry ; 21(9): 1225-31, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26503762

RESUMO

Interventions for autism are limited. The synthetic hormone oxytocin may provide a potential treatment to improve core social and behavioral difficulties in autism, but its efficacy has yet to be evaluated in young children who potentially may benefit to a greater extent. We investigated the efficacy, tolerability and safety of oxytocin treatment in young children with autism using a double-blind, randomized, placebo-controlled, crossover, clinical trial. Thirty-one children with autism received 12 International Units (IU) of oxytocin and placebo nasal spray morning and night (24 IU per day) for 5 weeks, with a 4-week washout period between each treatment. Compared with placebo, oxytocin led to significant improvements on the primary outcome of caregiver-rated social responsiveness. Overall, nasal spray was well tolerated, and the most common reported adverse events were thirst, urination and constipation. This study is the first clinical trial to support the potential of oxytocin as an early intervention for young children with autism to help improve social interaction deficits.


Assuntos
Ocitocina/uso terapêutico , Administração Intranasal , Transtorno do Espectro Autista/tratamento farmacológico , Transtorno Autístico/tratamento farmacológico , Criança , Pré-Escolar , Estudos Cross-Over , Método Duplo-Cego , Feminino , Humanos , Relações Interpessoais , Masculino , Sprays Nasais , Ocitocina/administração & dosagem , Comportamento Social , Resultado do Tratamento
8.
Mol Psychiatry ; 21(6): 806-12, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26122586

RESUMO

The pattern of structural brain alterations associated with major depressive disorder (MDD) remains unresolved. This is in part due to small sample sizes of neuroimaging studies resulting in limited statistical power, disease heterogeneity and the complex interactions between clinical characteristics and brain morphology. To address this, we meta-analyzed three-dimensional brain magnetic resonance imaging data from 1728 MDD patients and 7199 controls from 15 research samples worldwide, to identify subcortical brain volumes that robustly discriminate MDD patients from healthy controls. Relative to controls, patients had significantly lower hippocampal volumes (Cohen's d=-0.14, % difference=-1.24). This effect was driven by patients with recurrent MDD (Cohen's d=-0.17, % difference=-1.44), and we detected no differences between first episode patients and controls. Age of onset ⩽21 was associated with a smaller hippocampus (Cohen's d=-0.20, % difference=-1.85) and a trend toward smaller amygdala (Cohen's d=-0.11, % difference=-1.23) and larger lateral ventricles (Cohen's d=0.12, % difference=5.11). Symptom severity at study inclusion was not associated with any regional brain volumes. Sample characteristics such as mean age, proportion of antidepressant users and proportion of remitted patients, and methodological characteristics did not significantly moderate alterations in brain volumes in MDD. Samples with a higher proportion of antipsychotic medication users showed larger caudate volumes in MDD patients compared with controls. This currently largest worldwide effort to identify subcortical brain alterations showed robust smaller hippocampal volumes in MDD patients, moderated by age of onset and first episode versus recurrent episode status.


Assuntos
Encéfalo/patologia , Transtorno Depressivo Maior/patologia , Adulto , Estudos de Casos e Controles , Feminino , Hipocampo/patologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Neuroimagem/métodos
9.
Psychol Med ; 46(12): 2467-84, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27352637

RESUMO

Research in developmental psychopathology and clinical staging models has increasingly sought to identify trans-diagnostic biomarkers or neurocognitive deficits that may play a role in the onset and trajectory of mental disorders and could represent modifiable treatment targets. Less attention has been directed at the potential role of cognitive-emotional regulation processes such as ruminative response style. Maladaptive rumination (toxic brooding) is a known mediator of the association between gender and internalizing disorders in adolescents and is increased in individuals with a history of early adversity. Furthermore, rumination shows moderate levels of genetic heritability and is linked to abnormalities in neural networks associated with emotional regulation and executive functioning. This review explores the potential role of rumination in exacerbating the symptoms of alcohol and substance misuse, and bipolar and psychotic disorders during the peak age range for illness onset. Evidence shows that rumination not only amplifies levels of distress and suicidal ideation, but also extends physiological responses to stress, which may partly explain the high prevalence of physical and mental co-morbidity in youth presenting to mental health services. In summary, the normative developmental trajectory of rumination and its role in the evolution of mental disorders and physical illness demonstrates that rumination presents a detectable, modifiable trans-diagnostic risk factor in youth.


Assuntos
Comportamento do Adolescente/fisiologia , Transtornos Mentais/fisiopatologia , Estresse Psicológico/fisiopatologia , Transtornos Relacionados ao Uso de Substâncias/fisiopatologia , Ideação Suicida , Pensamento/fisiologia , Adolescente , Humanos , Modelos Teóricos
10.
Psychol Med ; 46(10): 2189-99, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27150660

RESUMO

BACKGROUND: Learning and memory impairments in older adults with depression are linked to hippocampal atrophy. However, other subcortical regions may also be contributing to these deficits. We aimed to examine whether anterior caudate nucleus volume is significantly reduced in older adults with depression compared to controls; whether anterior caudate volume is associated with performance on tasks of episodic learning and memory, and if so, whether this association is independent of the effects of the hippocampus. METHOD: Eighty-four health-seeking participants meeting criteria for lifetime major depressive disorder (mean age = 64.2, s.d. = 9.1 years) and 27 never-depressed control participants (mean age = 63.9, s.d. = 8.0 years) underwent neuropsychological assessment including verbal episodic memory tests [Rey Auditory Verbal Learning Test and Logical Memory (WMS-III)]. Magnetic resonance imaging was conducted, from which subregions of the caudate nucleus were manually demarcated bilaterally and hippocampal volume was calculated using semi-automated methods. RESULTS: Depressed subjects had smaller right anterior caudate (RAC) (t = 2.3, p = 0.026) and poorer memory compared to controls (t = 2.5, p < 0.001). For depressed subjects only, smaller RAC was associated with poorer verbal memory (r = 0.3, p = 0.003) and older age (r = -0.46, p < 0.001). Multivariable regression showed that the RAC and hippocampus volume uniquely accounted for 5% and 3% of the variance in memory, respectively (ß = 0.25, t = 2.16, p = 0.033; ß = 0.19, t = 1.71, p = 0.091). CONCLUSIONS: In older people with depression, the anterior caudate nucleus and the hippocampus play independent roles in mediating memory. While future studies examining this structure should include larger sample sizes and adjust for multiple comparisons, these findings support the critical role of the striatum in depression.


Assuntos
Núcleo Caudado/patologia , Transtorno Depressivo Maior/patologia , Transtorno Depressivo Maior/fisiopatologia , Hipocampo/patologia , Transtornos da Memória/patologia , Transtornos da Memória/fisiopatologia , Memória Episódica , Aprendizagem Verbal/fisiologia , Idoso , Núcleo Caudado/diagnóstico por imagem , Transtorno Depressivo Maior/complicações , Transtorno Depressivo Maior/diagnóstico por imagem , Feminino , Hipocampo/diagnóstico por imagem , Humanos , Imageamento por Ressonância Magnética , Masculino , Transtornos da Memória/diagnóstico por imagem , Transtornos da Memória/etiologia , Pessoa de Meia-Idade
11.
Mol Psychiatry ; 20(4): 440-6, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24934179

RESUMO

The role of non-diagnostic features in the pathophysiology of autism spectrum disorders (ASDs) is unclear. Increasing evidence suggests immune system alterations in ASD may be implicated in the severity of behavioral impairment and other developmental outcomes. The primary objective of this meta-analysis was to investigate if there is a characteristic abnormal cytokine profile in ASD compared with healthy controls (HCs). We identified relevant studies following a search of MEDLINE, EMBASE, PsycINFO, Web of Knowledge and Scopus. A meta-analysis was performed on studies comparing plasma and serum concentrations of cytokines in unmedicated participants with ASD and HCs. Results were reported according to PRISMA statement. Seventeen studies with a total sample size of 743 participants with ASD and 592 HC were included in the analysis. Nineteen cytokines were assessed. Concentrations of interleukin (IL)-1beta (P<0.001), IL-6 (P=0.03), IL-8 (P=0.04), interferon-gamma (P=0.02), eotaxin (P=0.01) and monocyte chemotactic protein-1 (P<0.05) were significantly higher in the participants with ASD compared with the HC group, while concentrations of transforming growth factor-ß1 were significantly lower (P<0.001). There were no significant differences between ASD participants and controls for the other 12 cytokines analyzed. The findings of our meta-analysis identified significantly altered concentrations of cytokines in ASD compared to HCs, strengthening evidence of an abnormal cytokine profile in ASD where inflammatory signals dominate.


Assuntos
Transtorno do Espectro Autista/metabolismo , Citocinas/metabolismo , Bases de Dados Bibliográficas/estatística & dados numéricos , Humanos
12.
Behav Genet ; 45(1): 35-50, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25151025

RESUMO

The heritability of attention-deficit/hyperactivity disorder (ADHD) is higher for children than adults. This may be due to increasing importance of environment in symptom variation, measurement inaccuracy when two raters report behavior of a twin-pair, a contrast effect resulting from parental comparison of siblings and/or dimensionality of measures. We examine rater contrast and sex effects in ADHD subtypes using a dimensional scale and compare the aetiology of self, versus maternal-report. Data were collected using the Strengths and Weaknesses of ADHD and Normal Behaviour Scale (SWAN): maternal-report for 3,223 twins and siblings (mean age 21.2, SD = 6.3) and self-report for 1,617 twins and siblings (mean age 25.5, SD = 3.2). Contrast effects and magnitude of genetic and environmental contributions to variance of ADHD phenotypes (inattention, hyperactivity-impulsivity, combined behaviours) were examined using structural equation modeling. Contrast effects were evident for maternal-report hyperactivity-impulsivity (b = -0.04) and self-report inattention (-0.09) and combined ADHD (-0.08). Dominant genetic effects were shared by raters for inattention, hyperactivity-impulsivity and combined ADHD. Broad-sense heritability was equal across sex for maternal-report inattention, hyperactivity-impulsivity and combined ADHD (0.72, 0.83, 0.80). Heritability for corresponding subtypes in self-reported data were best represented by sex (0.46, 0.30, 0.39 for males; 0.69, 0.41, 0.65 for females). Heritability difference between maternal and self-report ADHD was due to greater variance of male specific environment in self-report data. Self-reported ADHD differed across sex by magnitude of specific environment and genetic effects.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/genética , Comportamento Materno , Mães , Fatores Sexuais , Adolescente , Adulto , Transtorno do Deficit de Atenção com Hiperatividade/epidemiologia , Criança , Coleta de Dados , Doenças em Gêmeos , Feminino , Genes Dominantes , Humanos , Comportamento Impulsivo , Masculino , Pessoa de Meia-Idade , Fenótipo , Estudos Retrospectivos , Irmãos , Adulto Jovem
13.
Psychol Med ; 43(6): 1161-73, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23237010

RESUMO

BACKGROUND: Cognitive remediation (CR) is an effective treatment for several psychiatric disorders. To date, there have been no published studies examining solely first-episode psychiatric cohorts, despite the merits demonstrated by early intervention CR studies. The current study aimed to assess the effectiveness of CR in patients with a first-episode of either major depression or psychosis. Method Fifty-five patients (mean age = 22.8 years, s.d. = 4.3) were randomly assigned to either CR (n = 28) or treatment as usual (TAU; n = 27). CR involved once-weekly 2-h sessions for a total of 10 weeks. Patients were comprehensively assessed before and after treatment. Thirty-six patients completed the study, and analyses were conducted using an intent-to-treat (ITT) approach with all available data. RESULTS: In comparison to TAU, CR was associated with improved immediate learning and memory controlling for diagnosis and baseline differences. Similarly, CR patients demonstrated greater improvements than TAU patients in psychosocial functioning irrespective of diagnosis. Delayed learning and memory improvements mediated the effect of treatment on psychosocial functioning at a marginal level. CONCLUSIONS: CR improves memory and psychosocial outcome in first-episode psychiatric out-patients for both depression and psychosis. Memory potentially mediated the functional gains observed. Future studies need to build on the current findings in larger samples using blinded allocation and should incorporate longitudinal follow-up and assessment of potential moderators (e.g. social cognition, self-efficacy) to examine sustainability and the precise mechanisms of CR effects respectively.


Assuntos
Transtornos Cognitivos/reabilitação , Terapia Cognitivo-Comportamental/métodos , Transtorno Depressivo Maior/reabilitação , Intervenção Médica Precoce/métodos , Transtornos Psicóticos/reabilitação , Adolescente , Adulto , Instituições de Assistência Ambulatorial , Transtornos Cognitivos/psicologia , Transtorno Depressivo Maior/psicologia , Emprego , Feminino , Humanos , Relações Interpessoais , Aprendizagem , Masculino , Memória , Transtornos Psicóticos/psicologia , Resultado do Tratamento , Adulto Jovem
14.
Mol Psychiatry ; 17(1): 36-48, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21042317

RESUMO

Major depressive disorder (MDD) is a common complex disorder with a partly genetic etiology. We conducted a genome-wide association study of the MDD2000+ sample (2431 cases, 3673 screened controls and >1 M imputed single-nucleotide polymorphisms (SNPs)). No SNPs achieved genome-wide significance either in the MDD2000+ study, or in meta-analysis with two other studies totaling 5763 cases and 6901 controls. These results imply that common variants of intermediate or large effect do not have main effects in the genetic architecture of MDD. Suggestive but notable results were (a) gene-based tests suggesting roles for adenylate cyclase 3 (ADCY3, 2p23.3) and galanin (GAL, 11q13.3); published functional evidence relates both of these to MDD and serotonergic signaling; (b) support for the bipolar disorder risk variant SNP rs1006737 in CACNA1C (P=0.020, odds ratio=1.10); and (c) lack of support for rs2251219, a SNP identified in a meta-analysis of affective disorder studies (P=0.51). We estimate that sample sizes 1.8- to 2.4-fold greater are needed for association studies of MDD compared with those for schizophrenia to detect variants that explain the same proportion of total variance in liability. Larger study cohorts characterized for genetic and environmental risk factors accumulated prospectively are likely to be needed to dissect more fully the etiology of MDD.


Assuntos
Adenilil Ciclases/genética , Canais de Cálcio Tipo L/genética , Transtorno Depressivo Maior/genética , Galanina/genética , Predisposição Genética para Doença/genética , Polimorfismo de Nucleotídeo Único/genética , Adolescente , Adulto , Feminino , Estudo de Associação Genômica Ampla , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Análise de Componente Principal , Fatores Sexuais , Adulto Jovem
15.
J Autism Dev Disord ; 53(10): 3999-4011, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35927513

RESUMO

Reduced social attention is characteristic of Autism Spectrum Disorder (ASD). It has been suggested to result from an early onset and excessive influence of circumscribed interests (CIs) on gaze behaviour, compared to typically developing (TYP) individuals. To date, these findings have been mixed. The current eye-tracking study utilised a visual preference paradigm to investigate the influence of CI versus non-CI objects on attention patterns in children with ASD (aged 3-12 years, n = 37) and their age-matched TYP peers (n = 30). Compared to TYP, social and object attention was reduced in the ASD group irrespective of the presence of CIs. Results suggest a reduced role for CIs and extend recent evidence of atypical attention patterns across social and non-social domains in ASD.


Assuntos
Transtorno do Espectro Autista , Humanos , Criança , Atenção , Comportamento Social , Fixação Ocular
16.
Psychol Med ; 42(6): 1249-60, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22051348

RESUMO

BACKGROUND: Genetic studies in adults indicate that genes influencing the personality trait of neuroticism account for substantial genetic variance in anxiety and depression and in somatic health. Here, we examine for the first time the factors underlying the relationship between neuroticism and anxiety/depressive and somatic symptoms during adolescence. METHOD: The Somatic and Psychological Health Report (SPHERE) assessed symptoms of anxiety/depression (PSYCH-14) and somatic distress (SOMA-10) in 2459 adolescent and young adult twins [1168 complete pairs (35.4% monozygotic, 53% female)] aged 12-25 years (mean=15.5 ± 2.9). Differences between boys and girls across adolescence were explored for neuroticism, SPHERE-34, and the subscales PSYCH-14 and SOMA-10. Trivariate analyses partitioned sources of covariance in neuroticism, PSYCH-14 and SOMA-10. RESULTS: Girls scored higher than boys on both neuroticism and SPHERE, with SPHERE scores for girls increasing slightly over time, whereas scores for boys decreased or were unchanged. Neuroticism and SPHERE scores were strongly influenced by genetic factors [heritability (h(2)) = 40-52%]. A common genetic source influenced neuroticism, PSYCH-14 and SOMA-10 (impacting PSYCH-14 more than SOMA-10). A further genetic source, independent of neuroticism, accounted for covariation specific to PSYCH-14 and SOMA-10. Environmental influences were largely specific to each measure. CONCLUSIONS: In adolescence, genetic risk factors indexed by neuroticism contribute substantially to anxiety/depression and, to a lesser extent, perceived somatic health. Additional genetic covariation between anxiety/depressive and somatic symptoms, independent of neuroticism, had greatest influence on somatic distress, where it was equal in influence to the factor shared with neuroticism.


Assuntos
Transtornos de Ansiedade/genética , Transtorno Depressivo/genética , Doenças em Gêmeos , Modelos Genéticos , Transtornos Neuróticos/genética , Transtornos Somatoformes/genética , Adolescente , Adulto , Idade de Início , Transtornos de Ansiedade/epidemiologia , Criança , Comorbidade , Transtorno Depressivo/epidemiologia , Feminino , Predisposição Genética para Doença , Variação Genética , Humanos , Masculino , Transtornos Neuróticos/epidemiologia , Determinação da Personalidade , Autorrelato , Distribuição por Sexo , Meio Social , Transtornos Somatoformes/epidemiologia , Gêmeos/genética , Gêmeos/estatística & dados numéricos , Adulto Jovem
18.
Psychiatry Res ; 305: 114182, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34455216

RESUMO

This is the first study to describe psychometric properties of the Kessler Psychological Distress Scale (K6) in a large cohort of help-seeking young people presenting to primary mental health care services. The aim was to determine whether the K6 was appropriate for monitoring outcomes in such settings. 1067 young people were recruited from Australian headspace services. We examined dimensionality of the K6, measurement invariance, and how the K6 correlated with the the Patient Health Questionnaire-9 (PHQ-9)and the Generalised Anxiety Disorder-7 Scale (GAD-7). Standardised Response Mean (SRM) and Cohen's d effect size (ES) were used to examine 3-month stability of the K6. The best-fitting model was a two-factor model: (i) nervous and restlessness; and (ii) hopeless, worthless, depressed and effort. Measurement non-invariance was observed for sex and age groups. K6 strongly correlated with the PHQ-9 and GAD-7. The K6 was less sensitive to change compared to these other two measures. There was some support for the K6 being a screener for young people presenting to primary care; however, there issues arise with its use as an outcome measure. These issues include measurement non-invariance, concern about the dimensionality and focus of items, and its sensitivity to change.


Assuntos
Angústia Psicológica , Estresse Psicológico , Adolescente , Austrália , Humanos , Avaliação de Resultados em Cuidados de Saúde , Psicometria , Reprodutibilidade dos Testes , Estresse Psicológico/diagnóstico , Estresse Psicológico/psicologia
19.
J Affect Disord ; 281: 695-707, 2021 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-33358175

RESUMO

BACKGROUND: Executive function (EF) difficulties characterise a number of psychiatric conditions and EF impairment may be a predisposing factor and/or consequence of anxiety and stress. The aim of the study was to examine EF factors in a mixed clinical cohort (Autism Spectrum Disorder and Social Anxiety Disorder) characterised by social impairment and investigate the influence of trait anxiety and state-based depression, anxiety and stress. METHODS: In Study 1, a factor analysis identified EF and non-EF latent factor structures (N=205). In Study 2, (N=137) multiple regression analyses investigated the association between trait anxiety and state based depression, anxiety and stress, on EF and non-EF cognitive domains and on the two composite indices of the Behavioural Rating Inventory of Executive Function (BRIEF). RESULTS: Trait anxiety was associated with better performance on neuropsychological measures of EF while state-based stress was associated with lower EF performance. A dissociation was observed between trait anxiety and state stress on the two behavioural indices of the BRIEF. Depression, anxiety and stress did not predict performance on non-EF cognitive domains. LIMITATIONS: The cross-sectional design precludes cause-effect conclusions, further only self-report measures of affect were utilised and our performance measures of EF did not include a working memory test. CONCLUSIONS: The results demonstrate that trait anxiety and state-based stress influence EF processes across disorders with social impairment. The transdiagnostic efficacy of this finding can facilitate remediation strategies, it may also contribute to individuals with Autism Spectrum Disorder gaining better access to mental health services.


Assuntos
Transtorno do Espectro Autista , Função Executiva , Ansiedade/diagnóstico , Transtornos de Ansiedade/diagnóstico , Estudos Transversais , Humanos , Testes Neuropsicológicos
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