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1.
J Womens Health (Larchmt) ; 33(6): 765-773, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38551182

RESUMO

Introduction: Violence during pregnancy (VDP) is a prevalent global issue with dire consequences for the mother and the developing fetus. These consequences include prematurity, low birthweight, and intrauterine growth restriction (IUGR), but its pathways remain elusive. This study investigated the causal pathways between VDP and IUGR using mediation analysis. Methods: A prospective population-based birth cohort was followed from the beginning of the third gestational trimester to the second year of life. IUGR was defined by the Kramer index, and information on VDP was collected using the WHO-Violence Against Women (WHO VAW) questionnaire. Cases were considered positive only when no other life episodes were reported. Ten different mediators were analyzed as possible pathways based on previous research. Path analysis was conducted to evaluate these relationships. Results: The path analysis model included 755 dyads and presented an adequate fit. Violence during pregnancy showed a direct effect (ß = -0.195, p = 0.041) and a total effect (ß = -0.276, p = 0.003) on IUGR. Violence was associated with gestational depression or anxiety, tobacco and alcohol consumption, changes in blood pressure, and the need for emergency care, but these did not constitute mediators of its effect on IUGR. The sum of the indirect effects, however, showed a significant association with IUGR (ß = -0.081, p = 0.011). Conclusion: The acute experience of violence during pregnancy was associated with IUGR, primarily via a direct pathway. An indirect effect was also present but not mediated through the variables analyzed in this study. The robust strength of these associations underscores the negative health consequences of violence against women for the succeeding generation.


Assuntos
Retardo do Crescimento Fetal , Humanos , Feminino , Gravidez , Retardo do Crescimento Fetal/epidemiologia , Adulto , Estudos Prospectivos , Inquéritos e Questionários , Estudos de Coortes , Violência/psicologia , Violência/estatística & dados numéricos , Recém-Nascido , Fatores de Risco , Análise de Mediação , Complicações na Gravidez/psicologia , Complicações na Gravidez/epidemiologia
2.
Artigo em Inglês | MEDLINE | ID: mdl-38519607

RESUMO

High rates of co-occurrence of mental disorders have been hypothesized to represent a result of common susceptibility to overall psychopathology. The purpose of this study is to test the hypothesis that commonalities among psychiatric disorders might be partially driven by sharable perinatal and neonatal environmental factors for mental disorders. Participants were 6-14 years of age children and their parents. Primary caregivers provided data on perinatal and neonatal information assessed retrospectively (n = 2231). Psychiatric disorders diagnoses were assessed using the Development and Well Being Behavior Assessment (DAWBA). We used bifactor models to disentangle common from dissociable aspects of psychopathology. These models allow modeling psychiatric disorders as the result of a common domain of psychopathology (p-factor) and three dissociable domains (fear, distress, and externalizing symptoms). Associations were tested using linear and tobit regression models. The p-factor was associated with male sex, low socioeconomic status, gestational smoking, gestational drinking, low levels of maternal education and presence of mental disorder in the mother. Associations with specific factors also emerged suggesting some risk factors might also have some role for fear, distress and externalizing factors. Our study supports the hypothesis that overall susceptibility to psychopathology might be partially driven by sharable perinatal and neonatal factors.

4.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 45(5): 431-447, Sept.-Oct. 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1527997

RESUMO

Objectives: To summarize evidence-based cognitive-behavioral therapy (CBT) treatment and propose clinical interventions for adult patients with obsessive-compulsive disorder (OCD). Methods: The literature on CBT interventions for adult OCD, including BT and exposure and response prevention, was systematically reviewed to develop updated clinical guidelines for clinicians, providing comprehensive details about the necessary procedures for the CBT protocol. We searched the literature from 2013-2020 in five databases (PubMed, Cochrane, Embase, PsycINFO, and Lilacs) regarding study design, primary outcome measures, publication type, and language. Selected articles were assessed for quality with validated tools. Treatment recommendations were classified according to levels of evidence developed by the American College of Cardiology and the American Heart Association. Results: We examined 44 new studies used to update the 2013 American Psychiatric Association guidelines. High-quality evidence supports CBT with exposure and response prevention techniques as a first-line treatment for OCD. Protocols for Internet-delivered CBT have also proven efficacious for adults with OCD. Conclusion: High-quality scientific evidence supports the use of CBT with exposure and response prevention to treat adults with OCD.

5.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 45(4): 310-317, Aug. 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1513826

RESUMO

Objectives: To provide practical norms for measuring depressive symptoms with the Patient Health Questionnaire 9 (PHQ-9) in Brazil through a state-of-the-art psychometrics analysis. Methods: We used a large representative dataset from the 2019 Brazilian National Health Survey (Pesquisa Nacional de Saúde - 2019), which included 90,846 Brazilian citizens. To assess scale structure, we assessed a unidimensional model using confirmatory factor analysis. Item response theory was used to characterize the distribution of depressive symptoms. Summed- and mean-based PHQ-9 scores were then linked using item response theory-based scores in generalized additive models. Finally, percentiles, T scores, and a newly developed score, called the decimal score (D score), were generated to describe PHQ-9 norms for the Brazilian population. Results: Confirmatory factor analysis revealed a good fit to the unidimensional model, being invariant to age and sex. Item response theory captured item-level information about the latent trait (reliable from 1 to 3 SDs above the mean). Brazilian norms were presented using summed scores, T scores, and D scores. Conclusion: This is the first study to determine Brazilian norms for the PHQ-9 among a large representative sample using robust psychometric tools. More precise PHQ-9 scores are now available and may be widely used in primary and specialized clinical care settings.

6.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 45(2): 146-161, Mar.-Apr. 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1439556

RESUMO

Objectives: To summarize evidence-based pharmacological treatments and provide guidance on clinical interventions for adult patients with obsessive-compulsive disorder (OCD). Methods: The American Psychiatric Association (APA) guidelines for the treatment of OCD (2013) were updated with a systematic review assessing the efficacy of pharmacological treatments for adult OCD, comprising monotherapy with selective serotonin reuptake inhibitors (SSRIs), clomipramine, serotonin and norepinephrine reuptake inhibitors (SNRIs), and augmentation strategies with clomipramine, antipsychotics, and glutamate-modulating agents. We searched for the literature published from 2013-2020 in five databases, considering the design of the study, primary outcome measures, types of publication, and language. Selected articles had their quality assessed with validated tools. Treatment recommendations were classified according to levels of evidence developed by the American College of Cardiology and the American Heart Association (ACC/AHA). Results: We examined 57 new studies to update the 2013 APA guidelines. High-quality evidence supports SSRIs for first-line pharmacological treatment of OCD. Moreover, augmentation of SSRIs with antipsychotics (risperidone, aripiprazole) is the most evidence-based pharmacological intervention for SSRI-resistant OCD. Conclusion: SSRIs, in the highest recommended or tolerable doses for 8-12 weeks, remain the first-line treatment for adult OCD. Optimal augmentation strategies for SSRI-resistant OCD include low doses of risperidone or aripiprazole. Pharmacological treatments considered ineffective or potentially harmful, such as monotherapy with antipsychotics or augmentation with ketamine, lamotrigine, or N-acetylcysteine, have also been detailed.

7.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 45(3): 242-248, May-June 2023. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1447578

RESUMO

Objective: The Identifying Depression Early in Adolescence Risk Score (IDEA-RS) was recently developed in Brazil using data from the Pelotas 1993 Birth Cohort to estimate the individualized probability of developing depression in adolescence. This model includes 11 sociodemographic variables and has been assessed in longitudinal studies from four other countries. We aimed to test the performance of IDEA-RS in an independent, community-based, school-attending sample within the same country: the Brazilian High-Risk Cohort. Methods: Standard external validation, refitted, and case mix-corrected models were used to predict depression among 1442 youth followed from a mean age of 13.5 years at baseline to 17.7 years at follow-up, using probabilities calculated with IDEA-RS coefficients. Results: The area under the curve was 0.65 for standard external validation, 0.70 for the case mix-corrected model, and 0.69 for the refitted model, with discrimination consistently above chance for predicting depression in the new dataset. There was some degree of miscalibration, corrected by model refitting (calibration-in-the-large reduced from 0.77 to 0). Conclusion: IDEA-RS was able to parse individuals with higher or lower probability of developing depression beyond chance in an independent Brazilian sample. Further steps should include model improvements and additional studies in populations with high levels of subclinical symptoms to improve clinical decision making.

9.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 44(4): 388-400, July-Aug. 2022. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1394068

RESUMO

Objective: Maternal attention-deficit/hyperactivity disorder has not been investigated in relation to parenting skills in adolescent mothers. This study investigated whether maternal inattention and hyperactivity/impulsivity symptoms early in pregnancy predict poorer parenting skills and infant maltreatment during the first year of life in adolescent mothers living in adverse environmental conditions. Methods: The participants in this study were 80 adolescent mothers aged 14-19 years and their babies who were taking part in a randomized controlled trial on the effects of a home-visiting program on infant development. Symptoms of maternal attention-deficit/hyperactivity disorder were assessed in the first trimester of pregnancy. Parenting skills (maternal competence, attachment to the baby, home environment) and child maltreatment were assessed when the infants were aged 6 and 12 months. Multilevel linear regression models were constructed to test the extent to which prenatal maternal inattention and hyperactivity/impulsivity symptoms predicted these parenting variables during the first year of the infant's life. Results: Prenatal inattention symptoms significantly predicted lower maternal competence and attachment, a poorer home environment, and greater maltreatment during the first year of life. Hyperactivity did not significantly predict parenting skills or maltreatment. Conclusions: Our findings suggest that inattention symptoms may interfere with parenting abilities in adolescent mothers and should be considered in early intervention programs.

11.
Trends psychiatry psychother. (Impr.) ; 43(3): 235-239, Jul.-Sept. 2021. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1347937

RESUMO

Abstract Introduction Most children/adolescents with disability live in low and middle-income countries and, worldwide, they are more likely to have mental health problems and achieve worse academic performance compared to those with typical development. Objective To assess whether Brazilian children/adolescents with four types of disabilities are more likely to have psychiatric disorders and educational deficits than children/adolescents with typical development. Method A multicenter cross-sectional study involving a school-based probabilistic sample of second to sixth graders (N = 1,674) from public schools in four Brazilian regions. The four types of disabilities (intellectual, visual, hearing, and motor) were assessed using the Ten Questions Questionnaire. Psychiatric disorders were measured with the Schedule for Affective Disorders/Schizophrenia for School-Age Children (K-SADS-PL), and academic performance was evaluated using the Teste de Desempenho Acadêmico - TDE (the academic performance test). Results A logistic regression model with cluster-robust errors identified the following statistically significant associations with three of the four types of disability (the exception was hearing). Intellectual disability was associated with anxiety (p < 0.01), depression (p < 0.01), attention deficit hyperactivity disorder (ADHD) (p < 0.001), school failure (p < 0.01), and poor academic performance (p < 0.01). Visual disability was associated with depression (p < 0.01). Motor disability was marginally associated with ADHD (p = 0.08). Conclusions Presence of disabilities (intellectual, visual, and motor) in children/adolescents was associated with psychiatric disorders, school failure, and academic performance. It is therefore important to identify presence of disabilities and plan and deliver specific interventions and specialized educational care for the needs presented by these children/adolescents. This is particularly important in low and middle-income countries, where these disabilities are frequent among children/adolescents.

12.
Epidemiol Psychiatr Sci ; 30: e69, 2021 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-36178130

RESUMO

AIMS: Mental health problems early in life can negatively impact educational attainment, which in turn have negative long-term effects on health, social and economic opportunities. Our aims were to: (i) estimate the impacts of different types of psychiatric conditions on educational outcomes and (ii) to estimate the proportion of adverse educational outcomes which can be attributed to psychiatric conditions. METHODS: Participants (N = 2511) were from a school-based community cohort of Brazilian children and adolescents aged 6-14 years enriched for high family risk of psychiatric conditions. We examined the impact of fear- (panic, separation and social anxiety disorder, specific phobia, agoraphobia and anxiety conditions not otherwise specified), distress- (generalised anxiety disorder, major depressive disorder and depressive disorder not otherwise specified, bipolar, obsessive-compulsive, tic, eating and post-traumatic stress disorder) and externalising-related conditions (attention deficit and hyperactivity disorder, conduct and oppositional-defiant conditions) on grade repetition, dropout, age-grade distortion, literacy performance and bullying perpetration, 3 years later. Psychiatric conditions were ascertained by psychiatrists, using the Development and Well-Being Behaviour Assessment. Propensity score and inverse probability weighting were used to adjust for potential confounders, including comorbidity, and sample attrition. We calculated the population attributable risk percentages to estimate the proportion of adverse educational outcomes in the population which could be attributed to psychiatric conditions. Analyses were conducted separately for males and females. RESULTS: Fear and distress conditions in males were associated with school dropout (odds ratio (OR) = 2.76; 95% confidence interval (CI) = 1.06, 7.22; p < 0.05) and grade repetition (OR = 2.76; 95% CI = 1.32, 5.78; p < 0.01), respectively. Externalising conditions were associated with grade repetition in males (OR = 1.66; 95% CI = 1.05, 2.64; p < 0.05) and females (OR = 2.03; 95% CI = 1.15, 3.58; p < 0.05), as well as age-grade distortion in males (OR = 1.66; 95% CI = 1.05, 2.62; p < 0.05) and females (OR = 2.88; 95% CI = 1.61, 5.14; p < 0.001). Externalising conditions were also associated with lower literacy levels (ß = -0.23; 95% CI = -0.34, -0.12; p < 0.001) and bullying perpetration (OR = 3.12; 95% CI = 1.50, 6.51; p < 0.001) in females. If all externalising conditions were prevented or treated, we estimate that 5.0 and 4.8% of grade repetition would not have occurred in females and males, respectively, as well as 10.2 (females) and 5.3% (males) of age-grade distortion cases and 11.4% of female bullying perpetration. CONCLUSIONS: The study provides evidence of the negative impact of psychiatric conditions on educational outcomes in a large Brazilian cohort. Externalising conditions had the broadest and most robust negative impacts on education and these were particularly harmful to females which are likely to limit future socio-economic opportunities.


Assuntos
Transtorno Depressivo Maior , Transtornos Fóbicos , Adolescente , Transtornos de Ansiedade/epidemiologia , Brasil/epidemiologia , Criança , Escolaridade , Feminino , Humanos , Masculino , Transtornos Fóbicos/epidemiologia
13.
World Neurosurg ; 145: 298-300, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33022431

RESUMO

BACKGROUND: Gamma Knife ventral anterior capsulotomy is an effective option to treat refractory obsessive-compulsive disorder. Although well tolerated, complications can develop years after radiosurgery. We describe a case in which abnormal complications induced by very high doses of radiation evolved. CASE DESCRIPTION: A 55-year-old man with refractory obsessive-compulsive disorder was treated with Gamma Knife ventral anterior capsulotomy using a dose of 180 Gy. His obsessive-compulsive symptoms improved, but his condition evolved with a manic episode, cognitive memory changes, visual hallucinations, confabulation, and frontal lobe symptoms. Magnetic resonance imaging showed brain edema in the left hemisphere and a 6-mm brain cyst in the right hemisphere at postoperative month 20. CONCLUSIONS: This case shows the consequences of affecting more fibers related to the anterior frontal region than intended with a radiosurgical procedure and illustrates the importance of careful clinical and imaging follow-up after Gamma Knife ventral anterior capsulotomy.


Assuntos
Encefalopatias/etiologia , Cistos/etiologia , Cápsula Interna/cirurgia , Procedimentos Neurocirúrgicos/efeitos adversos , Complicações Pós-Operatórias/terapia , Radiocirurgia/efeitos adversos , Corticosteroides/uso terapêutico , Edema Encefálico/diagnóstico por imagem , Edema Encefálico/etiologia , Edema Encefálico/psicologia , Lobo Frontal/diagnóstico por imagem , Lobo Frontal/lesões , Humanos , Imageamento por Ressonância Magnética , Masculino , Transtornos Mentais/etiologia , Transtornos Mentais/psicologia , Pessoa de Meia-Idade , Transtorno Obsessivo-Compulsivo/cirurgia , Complicações Pós-Operatórias/tratamento farmacológico , Complicações Pós-Operatórias/psicologia , Doses de Radiação , Resultado do Tratamento
14.
Clinics ; 76: e2631, 2021. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1350604

RESUMO

OBJECTIVE: In 2020, the COVID-19 pandemic brought a work and stress overload to healthcare workers, increasing their vulnerability to mental health impairments. In response, the authors created the COMVC-19 program. The program offered preventive actions and mental health treatment for the 22,000 workers of The Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo (HCFMUSP). This paper aims to describe its implementation and share what we have learned from this experience. METHODS: Workers were able to easily access the program through a 24/7 hotline. Additionally, a mobile phone app that screened for signs and symptoms of emotional distress and offered psychoeducation and/or referral to treatment was made available. Data from both these sources as well as any subsequent psychiatric evaluations were collected. RESULTS: The first 20 weeks of our project revealed that most participants were female, and part of the nursing staff working directly with COVID-19 patients. The most frequently reported symptoms were: anxiety, depression and sleep disturbances. The most common diagnoses were Adjustment, Anxiety, and Mood disorders. CONCLUSIONS: Implementing a mental health program in a multimodal intervention was feasible in a major quaternary public hospital. Our data also suggests that preventive actions should primarily be aimed at anxiety and depression symptoms, with a particular focus on the nursing staff.


Assuntos
Humanos , Feminino , COVID-19 , Ansiedade/prevenção & controle , Ansiedade/epidemiologia , Brasil/epidemiologia , Saúde Mental , Pessoal de Saúde , Depressão , Pandemias , SARS-CoV-2
18.
Salud ment ; 41(6): 249-260, Nov.-Dec. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-986056

RESUMO

Abstract Introduction We assessed the impact of polythetic conceptualizations of mental disorders on the validity and reliability of psychiatric diagnosis, with a specific focus on two levels of heterogeneity: phenomenological and pathophysiological. Objective We investigated this issue using attention deficit hyperactivity disorder (ADHD) as an example. Method We examined individuals from two samples enriched for psychopathology (n = 1 255 children in Porto Alegre and 1 257 children in São Paulo, Brazil). We conducted a series of data analyses to investigate phenomenological heterogeneity, including confirmatory factor analysis. We also investigated pathophysiological heterogeneity using symptom-level regressions between ADHD symptoms and four neurocognitive processes consistently linked to ADHD (working memory, inhibitory control, intra-subject variability in reaction times, and temporal processing). Lastly, we assessed the performance of polythetic systems for reliability testing inter-rater and test-rest reliability of two well-known symptomatic scales. Results Among the 116 200 possible combinations of symptoms to achieve DSM symptomatic threshold for categorical ADHD diagnosis, we found 173 combinations in the two independent samples, and only four were replicated in both samples (2.3%). We also found that the number of ADHD symptoms is a poor indicator of variation in the general ADHD latent trait. Overall, symptoms did not have specific profiles of associations with any of the neurocognitive processes. Reliability analyses revealed that increasing the number of items augments overall reliability of measurements. Discussion and conclusion Our findings illustrate both potential benefits and problems inherent to the polythetic system for ADHD. Implications for the search of mechanisms underlying psychiatric disorders are discussed.


Resumen Antecedentes Evaluamos el impacto de las conceptualizaciones politécnicas de los trastornos mentales en la validez y la fiabilidad del diagnóstico psiquiátrico, con un enfoque específico en dos niveles de heterogeneidad: fenomenológico y fisiopatológico. Objetivos Investigamos este problema utilizando el trastorno por déficit de atención e hiperactividad (TDAH) como ejemplo. Método Examinamos individuos de dos muestras enriquecidas por psicopatología (n = 1 255 niños en Porto Alegre y 1 257 niños en São Paulo, Brasil). Llevamos a cabo una serie de análisis de datos para investigar la heterogeneidad fenomenológica, incluido el análisis factorial confirmatorio. También investigamos la heterogeneidad fisiopatológica utilizando regresiones al nivel de síntomas entre los síntomas del TDAH y cuatro procesos neurocognitivos consistentemente vinculados al TDAH (memoria de trabajo, control inhibitorio, variabilidad intrasujeto en tiempos de reacción y procesamiento temporal). Por último, evaluamos el rendimiento de los sistemas politéticos para la prueba de confiabilidad interevaluador y la confiabilidad test-rest de dos escalas sintomáticas bien conocidas. Resultados Entre las 116 200 posibles combinaciones de síntomas para alcanzar el umbral sintomático del DSM para el diagnóstico categórico de TDAH, encontramos 173 combinaciones en las dos muestras independientes y sólo cuatro se replicaron en ambas muestras (2.3%). También encontramos que la cantidad de síntomas de TDAH no es un buen indicador de la variación en el rasgo latente general del TDAH. En general, los síntomas no tenían perfiles específicos de asociaciones con ninguno de los procesos neurocognitivos. Los análisis de confiabilidad revelaron que aumentar el número de artículos aumenta la confiabilidad general de las mediciones. Discusión y conclusión Nuestros hallazgos ilustran tanto los beneficios potenciales como los problemas inherentes al sistema politécnico para el TDAH. Se discuten las implicaciones para la búsqueda de mecanismos subyacentes a los trastornos psiquiátricos.

19.
Ciênc. Saúde Colet. (Impr.) ; 23(9): 3013-3020, set. 2018. tab
Artigo em Português | LILACS | ID: biblio-952762

RESUMO

Resumo O presente estudo populacional de corte transversal teve como objetivo verificar a prevalência de problemas de saúde mental (PSM) e descrever o uso de serviços de saúde numa amostra de crianças atendidas em unidades de saúde (UBS) do município de São Paulo. Responsáveis de 825 crianças de 6-11 anos de idade foram entrevistados. PSM das crianças foram avaliados pelo "Strength and Difficulties Questionnaire" e uso de serviços por uma versão adaptada do "Client Service Receipt Inventory Children's version". A prevalência de PSM internalizantes e externalizantes foi de 30,7% e 18,3%, respectivamente. O pediatra foi o profissional de saúde mais consultado (56,7%), o psicólogo foi o profissional da saúde mental mais consultado (7,9%). Apenas 3 crianças estavam em tratamento medicamentoso para PSM. A alta prevalência de PSM em crianças atendidas na AP e o baixo número de atendimentos em serviços configuram um importante problema de saúde pública. Programas de capacitação para profissionais são importantes para aprimorar a identificação e o encaminhamento de casos de PSM.


Abstract The present population study aimed at identifying the prevalence of mental health problems (MHP) and describing health services use in a sample of children attending Primary Healthcare Units (PHU) in the city of Sao Paulo. Caregivers of 825 6-11 years old children were assessed. MHP were assessed with the Strength and Difficulties Questionnaire and health services use with an adapted version of the Client Receipt Inventory Children`s version. Prevalence of internalizing and externalizing MHP was 30.7% and 18.3%, respectively. Pediatricians were the most consulted health professional (56.7%) and psychologists the most consulted mental health professional (7.9%). Only 3 children were under medication treatment for MHP. The high prevalence of MHP among children in the primary care setting and the low rate of treatment constitute a public health problem. Training programs for health professionals are relevant to help identify and refer MHP cases.


Assuntos
Humanos , Masculino , Feminino , Criança , Adulto , Atenção Primária à Saúde , Encaminhamento e Consulta/estatística & dados numéricos , Transtornos Mentais/epidemiologia , Serviços de Saúde Mental , Brasil , Prevalência , Estudos Transversais , Inquéritos e Questionários , Controle Interno-Externo , Transtornos Mentais/fisiopatologia , Transtornos Mentais/terapia
20.
J Psychiatr Res ; 92: 24-30, 2017 09.
Artigo em Inglês | MEDLINE | ID: mdl-28384542

RESUMO

Investigating major depressive disorder (MDD) in childhood and adolescence can help reveal the relative contributions of genetic and environmental factors to MDD, since early stages of disease have less influence of illness exposure. Thus, we investigated the mRNA expression of 12 genes related to the hypothalamic-pituitary-adrenal (HPA) axis, inflammation, neurodevelopment and neurotransmission in the blood of children and adolescents with MDD and tested whether a history of childhood maltreatment (CM) affects MDD through gene expression. Whole-blood mRNA levels of 12 genes were compared among 20 children and adolescents with MDD diagnosis (MDD group), 49 participants without MDD diagnosis but with high levels of depressive symptoms (DS group), and 61 healthy controls (HC group). The differentially expressed genes were inserted in a mediation model in which CM, MDD, and gene expression were, respectively, the independent variable, outcome, and intermediary variable. NR3C1, TNF, TNFR1 and IL1B were expressed at significantly lower levels in the MDD group than in the other groups. CM history did not exert a significant direct effect on MDD. However, an indirect effect of the aggregate expression of the 4 genes mediated the relationship between CM and MDD. In the largest study investigating gene expression in children with MDD, we demonstrated that NR3C1, TNF, TNFR1 and IL1B expression levels are related to MDD and conjunctly mediate the effect of CM history on the risk of developing MDD. This supports a role of glucocorticoids and inflammation as potential effectors of environmental stress in MDD.


Assuntos
Maus-Tratos Infantis/psicologia , Transtorno Depressivo Maior/sangue , Expressão Gênica/fisiologia , Sistema Hipotálamo-Hipofisário/metabolismo , Sistema Hipófise-Suprarrenal/metabolismo , Adolescente , Criança , Estudos de Coortes , Transtorno Depressivo Maior/fisiopatologia , Feminino , Testes Genéticos , Humanos , Interleucina-1beta/genética , Interleucina-1beta/metabolismo , Masculino , Modelos Biológicos , Fragmentos de Peptídeos/genética , Fragmentos de Peptídeos/metabolismo , RNA Mensageiro/metabolismo , Receptores de Glucocorticoides/genética , Receptores de Glucocorticoides/metabolismo , Receptores Tipo I de Fatores de Necrose Tumoral/genética , Receptores Tipo I de Fatores de Necrose Tumoral/metabolismo , Características de Residência , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
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