Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
1.
Nutr Neurosci ; : 1-11, 2024 May 18.
Artigo em Inglês | MEDLINE | ID: mdl-38761117

RESUMO

OBJECTIVES: Vitamin D deficiency has been associated with psychiatric disorders and behavioral phenotypes such as Attention-Deficit/Hyperactivity Disorder (ADHD). Considering that vitamin D levels are polygenic, we aim to evaluate the overall effects of its genetic architecture on symptoms of inattention, hyperactivity, and impulsivity and on the serum levels of vitamin D in two independent samples of adults, as well as the specific effects of five relevant polymorphisms in vitamin D-related genes. METHODS: We evaluated 870 subjects from an ADHD sample (407 cases and 463 controls) and 319 subjects from an academic community (nutrigenetic sample). Vitamin D serum levels were obtained through Elisa test and genetic data by TaqMan™ allelic discrimination and Infinium PsychArray-24 BeadChip genotyping. Polygenic Scores (PGS) were calculated on PRSice2 based on the latest GWAS for Vitamin D and statistical analyses were conducted at Plink and SPSS software. RESULTS: Vitamin D PGSs were associated with inattention in the ADHD sample and with hyperactivity when inattention symptoms were included as covariates. In the nutrigenetic sample, CYP2R1 rs10741657 and DHCR7 rs12785878 were nominally associated with impulsivity and hyperactivity, respectively, and both with vitamin D levels. In the clinical sample, RXRG rs2134095 was associated with impulsivity. DISCUSSION: Our findings suggest a shared genetic architecture between vitamin D levels and ADHD symptoms, as evidenced by the associations observed with PGS and specific genes related to vitamin D levels. Interestingly, differential effects for vitamin D PGS were found in inattention and hyperactivity, which should be considered in further studies involving ADHD.

2.
Artigo em Inglês | MEDLINE | ID: mdl-38431891

RESUMO

INTRODUCTION: Suicide is a worldwide health concern and up to date there is no good predictor of it except a previous suicide attempt. Therefore, there are increasing efforts in the understanding of which factors, genetic or environmental, are associated with suicide behaviour. OBJECTIVE: To review evidence of the effect of childhood trauma and impulsivity on suicidal behavior through a systematic review and meta-analysis. METHODS: Searches were conducted on the 12th of June 2021 in the PubMed, Scopus, and Web of Science databases. Two reviewers evaluated each record for eligibility and discussed upon disagreement, when no consensus was reached, a third reviewer was involved to make a decision. RESULTS: A total of 11,530 records were identified through the searches. After duplicates were removed, 6,595 records remained to be screened. The full text was sought for 1,561 records. Our qualitative synthesis included 22 studies, from which 9 were included in the meta-analyses. We found a significant effect of sexual abuse, physical abuse, emotional abuse and physical neglect on suicide attempts in the prisoners, and Substance Use Diorder (SUD) subgroups. Moreover, there was a significant effect of Childhood Trauma Questionnaire (CTQ) total score and emotional neglect dimension for all the subgroups. CONCLUSION: The present study has provided an overview of the state-of-the-art research on childhood trauma and impulsivity and their association with suicidal behavior and quantified their effects on suicide attempts. Hopefully this evidence will be considered in future research and harnessed for clinical gain in detection and treatment of suicide behaviour.

3.
Appl Neuropsychol Adult ; 30(6): 757-763, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-34597199

RESUMO

OBJECTIVE: Cognitive impairments are known to be a frequent cause of disability in bipolar disorder (BD) and major depression (MDD). Yet there is no consensus regarding the particular cognitive functions whose impairments can lead to disability in each domain of functioning. The aim of this study was to perform a longitudinal evaluation of working memory, inhibition, cognitive flexibility and attention in BD and MDD, investigate the relationship of these cognitive functions to disability and quality of life, and evaluate the impact of variables related to cognitive reserve (education and daily cognitive stimulation) on cognitive performance. METHOD: 31 participants (MDD = 12; BD = 19) were evaluated at baseline and after an average time of 2 years. RESULTS: the BD group showed improvements in attention while patients with MDD improved on measures of attention and working memory. In BD working memory performance was associated with the cognition and mobility domains of functioning, and with physical and environmental quality of life. In MDD, cognitive flexibility was related to social relationships and environmental quality of life. CONCLUSION: working memory and cognitive flexibility may be an interesting target for interventions aiming to improve everyday functioning and quality of life in BD and MDD.

4.
Appl Neuropsychol Adult ; 28(5): 544-555, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-31530030

RESUMO

The Modified Card Sorting Test (MCST) is a widely used variation of the Wisconsin Card Sorting Test. It is faster to administer, less frustrating for respondents and less ambiguous in its scoring but has been criticized for its task impurity and low discriminability between control participants and clinical groups prone to executive dysfunction. This study aimed to examine the executive functions (EF) underlying traditional (number of categories completed, perseverative errors) and novel scores for the MCST, and compare their ability to differentiate between control and clinical samples. Novel and traditional MCST scores were compared between 94 control participants, 87 with bipolar disorder and 64 with major depression. The relationship between MCST scores and traditional EF tasks was examined through correlation and regression analyses. All MCST scores were associated with at least one measure of EF, the most common of which were the Trail Making or Hayling Tests. IQ predicted most scores on the MCST, save for nonperseverative errors and categorizing efficiency. Traditional and novel scores differentiated between clinical and control groups. These findings support the utility of the MCST in detecting executive dysfunction and highlight the importance of new scoring methods in increasing the specificity and interpretability of this task.


Assuntos
Transtorno Depressivo Maior , Função Executiva , Cognição , Humanos , Testes Neuropsicológicos
7.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; Braz. J. Psychiatry (São Paulo, 1999, Impr.);40(1): 26-34, Jan.-Mar. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-899409

RESUMO

Objective: To assess the effectiveness of three mood disorder treatment algorithms in a sample of patients seeking care in the Brazilian public healthcare system. Methods: A randomized pragmatic trial was conducted with an algorithm developed for treating episodes of major depressive disorder (MDD), bipolar depressive episodes and mixed episodes of bipolar disorder (BD). Results: The sample consisted of 259 subjects diagnosed with BD or MDD (DSM-IV-TR). After the onset of symptoms, the first treatment occurred ∼6 years and the use of mood stabilizers began ∼12 years. All proposed algorithms were effective, with response rates around 80%. The majority of the subjects took 20 weeks to obtain a therapeutic response. Conclusions: The algorithms were effective with the medications available through the Brazilian Unified Health System. Because therapeutic response was achieved in most subjects by 20 weeks, a follow-up period longer than 12 weeks may be required to confirm adequate response to treatment. Remission of symptoms is still the main desired outcome. Subjects who achieved remission recovered more rapidly and remained more stable over time. Clinical trial registration: NCT02901249, NCT02870283, NCT02918097


Assuntos
Humanos , Masculino , Feminino , Adulto , Antipsicóticos/uso terapêutico , Transtorno Bipolar/tratamento farmacológico , Transtornos do Humor/tratamento farmacológico , Transtorno Depressivo Maior/tratamento farmacológico , Fatores Socioeconômicos , Algoritmos , Brasil , Inquéritos e Questionários , Resultado do Tratamento , Programas Nacionais de Saúde
8.
Braz J Psychiatry ; 40(1): 26-34, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-28832750

RESUMO

OBJECTIVE: To assess the effectiveness of three mood disorder treatment algorithms in a sample of patients seeking care in the Brazilian public healthcare system. METHODS: A randomized pragmatic trial was conducted with an algorithm developed for treating episodes of major depressive disorder (MDD), bipolar depressive episodes and mixed episodes of bipolar disorder (BD). RESULTS: The sample consisted of 259 subjects diagnosed with BD or MDD (DSM-IV-TR). After the onset of symptoms, the first treatment occurred ∼6 years and the use of mood stabilizers began ∼12 years. All proposed algorithms were effective, with response rates around 80%. The majority of the subjects took 20 weeks to obtain a therapeutic response. CONCLUSIONS: The algorithms were effective with the medications available through the Brazilian Unified Health System. Because therapeutic response was achieved in most subjects by 20 weeks, a follow-up period longer than 12 weeks may be required to confirm adequate response to treatment. Remission of symptoms is still the main desired outcome. Subjects who achieved remission recovered more rapidly and remained more stable over time. CLINICAL TRIAL REGISTRATION: NCT02901249, NCT02870283, NCT02918097.


Assuntos
Antipsicóticos/uso terapêutico , Transtorno Bipolar/tratamento farmacológico , Transtorno Depressivo Maior/tratamento farmacológico , Transtornos do Humor/tratamento farmacológico , Adulto , Algoritmos , Brasil , Feminino , Humanos , Masculino , Programas Nacionais de Saúde , Fatores Socioeconômicos , Inquéritos e Questionários , Resultado do Tratamento
9.
J Int Neuropsychol Soc ; 23(7): 584-593, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28762320

RESUMO

OBJECTIVES: Cognitive dysfunction is a key feature of major depressive (MDD) and bipolar (BD) disorders. However, rather than a single cognitive profile corresponding to each diagnostic categories, recent studies have identified significant intra- and cross-diagnostic variability in patterns of cognitive impairment. The goal of this study was to contribute to the literature on cognitive heterogeneity in mood disorders by identifying cognitive subprofiles in a population of patients with MDD, BD type I, BD type II, and healthy adults. METHODS: Participants completed a neuropsychological battery; scores were converted into Z-scores using normative data and submitted to hierarchical cluster analysis. RESULTS: Three distinct neuropsychological clusters were identified: (1) a large cluster containing mostly control participants, as well as some patients with BD and MDD, who performed at above-average levels on all neuropsychological domains; (2) a cluster containing some patients from all diagnostic groups, as well as healthy controls, who performed worse than cluster 1 on most tasks, and showed impairments in motor inhibition and verbal fluency; (3) a cluster containing mostly patients with mood disorders with severe impairments in verbal inhibition and cognitive flexibility. CONCLUSIONS: These findings revealed multiple cognitive profiles within diagnostic categories, as well as significant cross-diagnostic overlap, highlighting the importance of developing more specific treatment approaches which consider patients' demographic and cognitive profiles in addition to their diagnosis. (JINS, 2017, 23, 584-593).


Assuntos
Transtorno Bipolar/fisiopatologia , Disfunção Cognitiva/classificação , Disfunção Cognitiva/fisiopatologia , Transtorno Depressivo Maior/fisiopatologia , Adulto , Transtorno Bipolar/complicações , Análise por Conglomerados , Disfunção Cognitiva/etiologia , Transtorno Depressivo Maior/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
10.
Psychiatry Res ; 241: 289-96, 2016 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-27209359

RESUMO

This study aimed to identify profiles of functioning and quality of life (QOL) in depression (MDD), bipolar disorder (BD) and healthy adults, as well as the clinical, demographic and cognitive variables associated with each of these profiles. Participants completed the WHODAS 2.0 and WHOQOL-BREF, which were submitted to latent profile analysis. The four cluster solution provided the best fit for our data. Cluster 1 consisted mostly of healthy adults, and had the highest functioning and QOL. Clusters 2 contained older patients with subclinical depressive symptoms and psychiatric comorbidities, whose impairments in QOL and functioning were associated with mood symptoms and several cognitive abilities. Patients with MDD, BDI or BDII with mild to moderate depression, such as those in cluster 3, may benefit more significantly from interventions in cognitive flexibility, inhibition, planning, and sustained attention. Lastly, patients with mood disorders and clinically significant levels of depression, as well as a history of suicide attempts, like those in cluster 4, may benefit from interventions aimed at working memory, inhibitory control, and cognitive flexibility; that is, the three core executive functions. These findings should be further investigated, and used to guide treatments for patients with mood disorders and different patterns of functional impairment.


Assuntos
Transtorno Bipolar/psicologia , Cognição , Transtorno Depressivo Maior/psicologia , Qualidade de Vida/psicologia , Adolescente , Adulto , Idoso , Atenção/fisiologia , Transtorno Bipolar/fisiopatologia , Estudos de Casos e Controles , Análise por Conglomerados , Comorbidade , Transtorno Depressivo Maior/fisiopatologia , Função Executiva/fisiologia , Feminino , Humanos , Inibição Psicológica , Masculino , Pessoa de Meia-Idade , Tentativa de Suicídio/psicologia , Adulto Jovem
11.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; Braz. J. Psychiatry (São Paulo, 1999, Impr.);34(1): 122-122, Mar. 2012.
Artigo em Português | LILACS-Express | LILACS | ID: lil-617143
12.
17.
Rev. psiquiatr. Rio Gd. Sul ; Rev. psiquiatr. Rio Gd. Sul;26(1)jan.-abr. 2004. tab
Artigo em Português | LILACS-Express | LILACS | ID: lil-362530

RESUMO

No presente artigo, é apresentado o desenvolvimento da versão em português da Bech-Rafaelsen Mania Rating Scale (BRMaS) de Bech e colaboradores intitulada: Escala de Avaliação de Mania de Bech-Rafaelsen (EAM-BR). A EAM-BR foi desenvolvida para ser aplicada na forma de uma entrevista semi-estruturada breve conduzida pelo clínico. Ela investiga a presença versus a ausência de sintomas maníacos, sua severidade e sua mudança em resposta ao tratamento. São descritas as qualidades psicométricas da escala original. Com este artigo, a comunidade científica passa a dispor em português de mais um importante instrumento para avaliação do estado maníaco.

18.
Rev. psiquiatr. Rio Gd. Sul ; Rev. psiquiatr. Rio Gd. Sul;25(3): 412-424, dez. 2003.
Artigo em Português | LILACS-Express | LILACS | ID: lil-359620

RESUMO

OBJETIVOS: No presente artigo é apresentado o desenvolvimento da versão em português da "Clinician-Administered Rating Scale for Mania" (CARS-M) de Altman e colaboradores intitulada: Escala Administrada pelo Clínico para Avaliação de Mania (EACA-M) ou "Escala de Mania de Altman". Os objetivos desse artigo são: (1) descrever a metodologia de elaboração da versão em português da CARS-M, (2) transmitir as impressões dos profissionais que a utilizaram e (3) disponibilizar a escala na íntegra em língua portuguesa. MÉTODOS: Os métodos utilizados foram: a) painel bilíngüe de tradução e discussão de todos os itens; b) retrotradução por pessoa habilitada; c) envio ao próprio autor da escala da nova versão em inglês originada a partir da sua tradução para o português; d) discussão com o autor dos pontos pendentes, bem como nova discussão entre os participantes do grupo de pesquisadores brasileiros até se chegar a um consenso. CONCLUSÕES: A impressão dos autores é a de que a EACA-M permite não apenas a fácil pontuação de todos os escores, mas também cobre o largo espectro de apresentação de uma síndrome maníaca. Com este artigo, a comunidade científica de Língua Portuguesa passa a dispor de um importante instrumento para avaliação do estado maníaco.

19.
Rev. psiquiatr. Rio Gd. Sul ; Rev. psiquiatr. Rio Gd. Sul;25(3): 446-452, dez. 2003.
Artigo em Português | LILACS-Express | LILACS | ID: lil-359623

RESUMO

Os autores do presente artigo propõem, a partir do modelo pedagógico proposto por Antoni Zabala, uma abordagem psicoeducativa grupal para pacientes adultos portadores de Transtorno de Déficit de Atenção/Hiperatividade. Para tanto, adaptam esta estrutura pedagógica para fundamentar a abordagem de grupos psicoeducacionais. O presente trabalho adiciona uma nova técnica para o tratamento do TDAH no adulto a partir da interface entre a pedagogia e a psicoterapia.

20.
Braz J Psychiatry ; 25 Suppl 1: 8-11, 2003 Jun.
Artigo em Português | MEDLINE | ID: mdl-14523503

RESUMO

The authors elaborate on the historical evolution of the concept of Posttraumatic Stress Disorder (PTSD). The authors quote the French scholars, mainly Charcot and Janet, as the first to connect traumatic events and symptoms of hysteria. The contributions of Freud are described with enphasis on his effort into integrating the intra-psychic and environmental dimensions. Kardiner is referred as the author who coined the concept of 'war neurosis', which was deemed as an important one during the Second World War and Vietnam War. In conclusion, the authors highlight that the concept of PTSD used in the Diagnostic and Statistical Manual of Mental Disorders (DSM) by the American Psychiatric Association assess, at the same time, how treatening was the traumatic event and the list of symptoms presented by the patients.


Assuntos
Transtornos de Estresse Pós-Traumáticos/história , Distúrbios de Guerra , Manual Diagnóstico e Estatístico de Transtornos Mentais , França , Teoria Freudiana , História do Século XX , Humanos , Terminologia como Assunto
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA