Exploring the Acquisition of Social Communication Skills in Children with Autism: Preliminary Findings from Applied Behavior Analysis (ABA), Parent Training, and Video Modeling.

Social communication skills, especially eye contact and joint attention, are frequently impaired in autism spectrum disorder (ASD) and predict functional outcomes. Applied behavior analysis is one of the most common evidence-based treatments for ASD, but it is not accessible to most families in low- and middle-income countries (LMICs) as it is an expensive and intensive treatment and needs to be delivered by highly specialized professionals. Parental training has emerged as an effective alternative. This is an exploratory study to assess a parental intervention group via video modeling to acquire eye contact and joint attention. Four graded measures of eye contact and joint attention (full physical prompt, partial physical prompt, gestural prompt, and independent) were assessed in 34 children with ASD and intellectual disability (ID). There was a progressive reduction in the level of prompting required over time to acquire eye contact and joint attention, as well as a positive correlation between the time of exposure to the intervention and the acquisition of abilities. This kind of parent training using video modeling to teach eye contact and joint attention skills to children with ASD and ID is a low-cost intervention that can be applied in low-resource settings.

Psychiatric Symptomatology is Associated with Polydrug Use and School Violence in Early Adolescence.

This study investigated the association between psychiatric symptoms and polydrug use, school violence, and sociodemographic factors among Brazilian early adolescents. Using the baseline data collection from the effectiveness evaluation of PROERD, a school-based drug use prevention program, implemented in 30 public schools in São Paulo (n = 2316, M age = 12.3 years, 48.5% girls), multinomial logistic regressions were performed using Strengths and Difficulties Questionnaire (SDQ) subscales as response variables, and polydrug use, school violence, and sociodemographic characteristics as explanatory variables. In most SDQ subscales, girls and older students were more likely to have psychiatric symptoms. A positive association was identified between polydrug use and psychiatric symptoms. It was found that those who suffered and perpetrated physical violence had a greater likelihood of presenting psychiatric symptoms. Preventive interventions should consider the greater vulnerability related to the mental health of girls, older students, and those who suffer and perpetrate physical violence at school.

Repercussion of the implementation of the Picture Exchange Communication System - PECS in the overload index of mothers of children with Autism Spectrum Disorder. / Repercussão da implementação do Picture Exchange Communication System ­ PECS no índice de sobrecarga de mães de crianças com Transtorno do Espectro do Autismo.

PURPOSE: The aim of this study was to analyze the repercussion of the implementation of PECS on the burden index of mothers of children with Autism Spectrum Disorder (ASD). METHODS: This was a longitudinal study (CEP 0403/2017). The sample consisted of 20 mother and child with ASD. The mothers were on average 41 years and 5 months and the children were 7 years and 2 months old. Fifteen children were male and five were female. The brazilian version of the Burden Interview scale was applied to verify the level of caregiver burden. The Autism Behavior Checklist (ABC) was applied to the analysis of non-adaptive behaviors and to analyze the lexical repertoire: Auditory and Expressive Vocabulary Tests. The PECS Implementation Program was composed of 24 sessions of individual speech therapy with the active presence of mothers. At the end all children and mothers were reevaluated with part of the instruments. RESULTS: There was a tendency to reduce maternal overload indexes after the implementation of the PECS. There was a significant decrease in non-adaptive behaviors and an increase in the expressive and auditory vocabulary indexes of the children at the final moment of the study. We did not observe a significant correlation between the degrees of overload with age, schooling and intellectual quotient of children, nor schooling and maternal socioeconomic status. CONCLUSION: It was possible to analyze the repercussion of the implementation of the PECS on the burden of mothers of children with ASD assisted by the Program.

OBJETIVO: O objetivo deste estudo foi analisar a repercussão da implementação do PECS no índice de sobrecarga de mães de crianças com Transtorno do Espectro do Autismo (TEA). MÉTODO: Trata-se de um estudo longitudinal (CEP 0403/2017). A amostra foi constituída por 20 díades mães-crianças com TEA. As mães tinham em média, 41 anos e 5 meses e as crianças, 7 anos e 2 meses. Quinze crianças eram do gênero masculino e cinco, do feminino. Foi aplicada a versão brasileira da escala Burden Interview cujo objetivo é a verificação do nível de sobrecarga dos cuidadores. Para análise dos comportamentos não-adaptativos aplicou-se o Autism Behavior Checklist (ABC) e para análise do repertório lexical: os Testes de Vocabulário Auditivo e Expressivo. O Programa de Implementação do PECS foi composto por 24 sessões de terapia fonoaudiológica individual com a presença ativa das mães. Ao final do Programa todas as crianças e suas respectivas mães foram reavaliadas com parte dos instrumentos utilizados na fase inicial do estudo. RESULTADOS: Houve tendência de redução dos índices de sobrecarga materna após a implementação do PECS. Notamos diminuição significativa dos comportamentos não-adaptativos e aumento dos índices de vocabulário expressivo e auditivo das crianças no momento final do estudo. Não observamos correlação significativa entre os índices de sobrecarga com a idade, escolaridade e quociente intelectual das crianças; nem com a escolaridade e nível socioeconômico materno. CONCLUSÃO: Foi possível analisar a repercussão da implementação do PECS na sobrecarga de mães de crianças com TEA assistidas pelo Programa.

Repercussão da implementação do Picture Exchange Communication System - PECS no índice de sobrecarga de mães de crianças com Transtorno do Espectro do Autismo / Repercussion of the implementation of the Picture Exchange Communication System - PECS in the overload index of mothers of children with Autism Spectrum Disorder

RESUMO Objetivo O objetivo deste estudo foi analisar a repercussão da implementação do PECS no índice de sobrecarga de mães de crianças com Transtorno do Espectro do Autismo (TEA). Método Trata-se de um estudo longitudinal (CEP 0403/2017). A amostra foi constituída por 20 díades mães-crianças com TEA. As mães tinham em média, 41 anos e 5 meses e as crianças, 7 anos e 2 meses. Quinze crianças eram do gênero masculino e cinco, do feminino. Foi aplicada a versão brasileira da escala Burden Interview cujo objetivo é a verificação do nível de sobrecarga dos cuidadores. Para análise dos comportamentos não-adaptativos aplicou-se o Autism Behavior Checklist (ABC) e para análise do repertório lexical: os Testes de Vocabulário Auditivo e Expressivo. O Programa de Implementação do PECS foi composto por 24 sessões de terapia fonoaudiológica individual com a presença ativa das mães. Ao final do Programa todas as crianças e suas respectivas mães foram reavaliadas com parte dos instrumentos utilizados na fase inicial do estudo. Resultados Houve tendência de redução dos índices de sobrecarga materna após a implementação do PECS. Notamos diminuição significativa dos comportamentos não-adaptativos e aumento dos índices de vocabulário expressivo e auditivo das crianças no momento final do estudo. Não observamos correlação significativa entre os índices de sobrecarga com a idade, escolaridade e quociente intelectual das crianças; nem com a escolaridade e nível socioeconômico materno. Conclusão Foi possível analisar a repercussão da implementação do PECS na sobrecarga de mães de crianças com TEA assistidas pelo Programa.

ABSTRACT Purpose The aim of this study was to analyze the repercussion of the implementation of PECS on the burden index of mothers of children with Autism Spectrum Disorder (ASD). Methods This was a longitudinal study (CEP 0403/2017). The sample consisted of 20 mother and child with ASD. The mothers were on average 41 years and 5 months and the children were 7 years and 2 months old. Fifteen children were male and five were female. The brazilian version of the Burden Interview scale was applied to verify the level of caregiver burden. The Autism Behavior Checklist (ABC) was applied to the analysis of non-adaptive behaviors and to analyze the lexical repertoire: Auditory and Expressive Vocabulary Tests. The PECS Implementation Program was composed of 24 sessions of individual speech therapy with the active presence of mothers. At the end all children and mothers were reevaluated with part of the instruments. Results There was a tendency to reduce maternal overload indexes after the implementation of the PECS. There was a significant decrease in non-adaptive behaviors and an increase in the expressive and auditory vocabulary indexes of the children at the final moment of the study. We did not observe a significant correlation between the degrees of overload with age, schooling and intellectual quotient of children, nor schooling and maternal socioeconomic status. Conclusion It was possible to analyze the repercussion of the implementation of the PECS on the burden of mothers of children with ASD assisted by the Program.

The Impact of the Implementation of the Picture Exchange Communication System - PECS on Understanding Instructions in Children with Autism Spectrum Disorders. / O impacto da implementação do Picture Exchange Communication System - PECS na compreensão de instruções em crianças com Transtorno do Espectro do Autismo.

PURPOSE: The purpose of this study was to analyze the impact of the implementation of the Picture Exchange Communication System (PECS) on the comprehension of instructions by children with Autism Spectrum Disorder (ASD). METHODS: This is a longitudinal study (N° 0809/2018). The sample consisted of 20 children with nonverbal ASDs, 15 boys and 5 girls, aged 6 to 12 years, evaluated and diagnosed by a multidisciplinary team according to the DSM-5. For assessment of the comprehension of instructions, we used eight visual instructions and eight oral instructions, which were applied at two points in the PECS Implementation Program: early phases II and IV. The program consisted of 24 individual speech therapy sessions with the presence of a family member and followed the six phases originally proposed by the PECS Training Manual. RESULTS: There was an expressive increase in the comprehension of all instructions, in the comparison between the two moments of the study; and this increase was statistically significant in six of the oral instructions (p=0.001) and five of the visual ones (p=0.002). CONCLUSION: It was possible to observe the positive impact of the use of PECS in the comprehension of both visual and oral instructions, showing that this system not only provides an augmentative or alternative communication tool for the children to express themselves but also promotes significant improvement in the understanding of contextual information.

OBJETIVO: O objetivo deste estudo foi analisar o impacto da implementação do Picture Exchange Communication System ­ PECS na compreensão de instruções de crianças com Transtorno do Espectro do Autismo (TEA). MÉTODO: Trata-se de estudo longitudinal. A amostra foi constituída por 20 crianças com TEA não verbais, sendo 15 meninos e 5 meninas, na faixa etária de 6 a 12 anos, avaliadas e diagnosticadas por equipe multidisciplinar, segundo os critérios do DSM-5. Para avaliação da compreensão de instruções foram aplicadas 8 instruções visuais e 8 instruções orais, em dois momentos do Programa de Implementação do PECS: no início das fases II e IV. O programa foi composto por 24 sessões de terapia fonoaudiológica individual com a presença do familiar e obedeceu às seis fases propostas originalmente pelo Manual de Treinamento do PECS. RESULTADOS: Houve aumento expressivo na compreensão de todas as instruções, na comparação entre os dois momentos do estudo; sendo que em seis das instruções orais (p=0,001) e cinco das instruções visuais (p=0,002), esse aumento foi estatisticamente significante. CONCLUSÃO: Foi possível observar o impacto positivo do uso do PECS na compreensão de instruções tanto visuais quanto orais, mostrando que esse sistema não apenas fornece uma ferramenta de comunicação aumentativa ou alternativa para a criança se expressar, mas também promove melhora significativa na compreensão das informações contextuais.

O impacto da implementação do Picture Exchange Communication System - PECS na compreensão de instruções em crianças com Transtorno do Espectro do Autismo / The Impact of the Implementation of the Picture Exchange Communication System - PECS on Understanding Instructions in Children with Autism Spectrum Disorders

RESUMO Objetivo O objetivo deste estudo foi analisar o impacto da implementação do Picture Exchange Communication System - PECS na compreensão de instruções de crianças com Transtorno do Espectro do Autismo (TEA). Método Trata-se de estudo longitudinal. A amostra foi constituída por 20 crianças com TEA não verbais, sendo 15 meninos e 5 meninas, na faixa etária de 6 a 12 anos, avaliadas e diagnosticadas por equipe multidisciplinar, segundo os critérios do DSM-5. Para avaliação da compreensão de instruções foram aplicadas 8 instruções visuais e 8 instruções orais, em dois momentos do Programa de Implementação do PECS: no início das fases II e IV. O programa foi composto por 24 sessões de terapia fonoaudiológica individual com a presença do familiar e obedeceu às seis fases propostas originalmente pelo Manual de Treinamento do PECS. Resultados Houve aumento expressivo na compreensão de todas as instruções, na comparação entre os dois momentos do estudo; sendo que em seis das instruções orais (p=0,001) e cinco das instruções visuais (p=0,002), esse aumento foi estatisticamente significante. Conclusão Foi possível observar o impacto positivo do uso do PECS na compreensão de instruções tanto visuais quanto orais, mostrando que esse sistema não apenas fornece uma ferramenta de comunicação aumentativa ou alternativa para a criança se expressar, mas também promove melhora significativa na compreensão das informações contextuais.

ABSTRACT Purpose The purpose of this study was to analyze the impact of the implementation of the Picture Exchange Communication System (PECS) on the comprehension of instructions by children with Autism Spectrum Disorder (ASD). Methods This is a longitudinal study (N° 0809/2018). The sample consisted of 20 children with nonverbal ASDs, 15 boys and 5 girls, aged 6 to 12 years, evaluated and diagnosed by a multidisciplinary team according to the DSM-5. For assessment of the comprehension of instructions, we used eight visual instructions and eight oral instructions, which were applied at two points in the PECS Implementation Program: early phases II and IV. The program consisted of 24 individual speech therapy sessions with the presence of a family member and followed the six phases originally proposed by the PECS Training Manual. Results There was an expressive increase in the comprehension of all instructions, in the comparison between the two moments of the study; and this increase was statistically significant in six of the oral instructions (p=0.001) and five of the visual ones (p=0.002). Conclusion It was possible to observe the positive impact of the use of PECS in the comprehension of both visual and oral instructions, showing that this system not only provides an augmentative or alternative communication tool for the children to express themselves but also promotes significant improvement in the understanding of contextual information.

Interference of the communicative profile of children with autism spectrum disorders upon their mother's quality of life. / Interferência do meio comunicativo da criança com transtorno do espectro do autismo na qualidade de vida de suas mães.

PURPOSE: According to the World Health Organization, quality of life is defined as the perception an individual has on his/her position within the cultural context and the system of values in which he/she is contained. This perception is intrinsically related to the objectives, expectations, patterns, and concerns of such an individual. We know that when a member of a family is assailed by an ailment, the quality of life of all of those who surround him/her suffer a strong impact. One of the great concerns of the families regarding the development of a child with Autism Spectrum Disorder (ASD) is the lack or impairment of the child's speech. Thus, the objective of this study was to analyze the interference of the communicative means of children with ASD upon the quality of life of their mothers. METHODS: This was a transversal study. The sample was obtained from 41 mothers of children diagnosed with ASD by a multi-disciplinary team: the mothers were divided into two groups: 20 mothers of non-verbal children-GASD-NV; and 21 mothers of verbal children-GASD. We applied the WHOQOL-Bref questionnaire to score and analyze the quality of life of these mothers. RESULTS: There was no significant difference in the maternal perception related to the domains that reflected the quality of life which we compared between these two groups of mothers. In both groups, we observed high indexes of dissatisfaction. CONCLUSION: We verified that the quality of life of the mothers of children with ASD was affected regardless of the communicative means used by the child.

OBJETIVO: A Organização Mundial de Saúde define a qualidade de vida como a percepção que o indivíduo tem de sua posição na vida dentro do contexto cultural e do sistema de valores nos quais ele está inserido. Ela está intrinsicamente relacionada aos objetivos, expectativas, padrões e preocupações deste indivíduo. Sabe-se que, quando um membro da família é acometido por alguma doença, a qualidade de vida de todos ao seu redor sofre forte impacto. Uma das grandes preocupações das famílias em relação ao desenvolvimento da criança com Transtorno do Espectro do Autismo (TEA) é a ausência da fala. Sendo assim, o objetivo deste estudo foi analisar a interferência do meio comunicativo da criança com TEA na qualidade de vida de suas mães. MÉTODO: Trata-se de um estudo transversal. A amostra foi constituída por 41 mães de crianças diagnosticadas, por equipe multidisciplinar, com TEA que foram divididas em dois grupos: 20 mães de crianças não verbais - GTEA-NV e 21 mães de crianças verbais - GTEA. Para a análise da qualidade de vida das mães, aplicou-se o questionário WHOQOL-Bref. RESULTADOS: Não houve diferença significante na percepção materna acerca dos domínios que refletem a qualidade de vida na comparação entre os grupos de mães. Em ambos os grupos, observamos índices elevados de insatisfação. CONCLUSÃO: Verificamos que a qualidade de vida das mães das crianças com TEA esteve afetada independentemente do meio comunicativo utilizado pela criança.

A Guide for Planning and Implementing Successful Mental Health Educational Programs.

INTRODUCTION: Considering the global burden of mental disorders, there is a worldwide need to improve the quality of mental health care. In order to address this issue, a change in how health care professionals are trained may be essential. However, the majority of the few reports published on this field's training programs do not discuss the characteristics associated with the success or failure of these strategies. The purpose of this review was to systematically examine the literature about mental health training programs designed for health care professionals in order to identify the relevant factors associated with their effective implementation. METHODS: The MEDLINE/PubMed, SciELO, and Virtual Health Library databases were used to search for articles published before February 2017 and reviewed by two double-blind reviewers. RESULTS: We found 77 original papers about mental health educational programs. Many of these studies were conducted in the USA (39%), addressed depression as the main subject (34%), and applied a quasi-experimental design (52%). Effective interventions were associated with the following characteristics: the use of learner-centered and interactive methodological approaches; a curriculum based on challenges in the trainees' daily routines; the involvement of experts in the program's development; the enrollment of experienced participants; interdisciplinary group work; flexible timing; the use of e-learning resources; and optimizing the implementation of knowledge into the participants' routine work practices. IMPLICATIONS FOR PRACTICE: These results will be helpful for planning and improving the quality of future educational programs in mental health.

Adolescent adaptive behavior profiles in Williams-Beuren syndrome, Down syndrome, and autism spectrum disorder.

BACKGROUND: Adaptive behavior can be impaired in different neurodevelopmental disorders and may be influenced by confounding factors, such as intelligence quotient (IQ) and socioeconomic classification. Our main objective was to verify whether adaptive behavior profiles differ in three conditions-Williams Beuren syndrome (WBS), Down syndrome (DS), and autism spectrum disorder (ASD), as compared with healthy controls (HC) and with each other. Although the literature points towards each disorder having a characteristic profile, no study has compared profiles to establish the specificity of each one. A secondary objective was to explore potential interactions between the conditions and socioeconomic status, and whether this had any effect on adaptive behavior profiles. METHODS: One hundred and five adolescents were included in the study. All adolescents underwent the following evaluations: the Vineland Adaptive Behavior Scale (VABS), the Wechsler Intelligence Scale for Children (WISC), and the Brazilian Economic Classification Criteria. RESULTS: Our results demonstrated that the WBS group performed better than the DS group in the communication domain, ß = -15.08, t(3.45), p = .005, and better than the ASD group in the socialization domain, ß = 8.92, t(-2.08), p = .013. The DS group also performed better than the ASD group in socialization, ß = 16.98, t(-2.32), p = .024. IQ was an important confounding factor, and socioeconomic status had an important effect on the adaptive behavior of all groups. CONCLUSIONS: There is a heterogeneity regarding adaptive behavior profiles in WBS, DS, and ASD. These data are important to better design specific strategies related to the health and social care of each particular group.

Methylphenidate use in children with attention deficit hyperactivity disorder.

A Brazilian Health Technology Assessment Bulletin (BRATS) article regarding scientific evidence of the efficacy and safety of methylphenidate for treating attention deficit hyperactivity disorder (ADHD) has caused much controversy about its methods. Considering the relevance of BRATS for public health in Brazil, we critically reviewed this article by remaking the BRATS search and discussing its methods and results. Two questions were answered: did BRATS include all references available in the literature? Do the conclusions reflect the reviewed articles? The results indicate that BRATS did not include all the references from the literature on this subject and also that the proposed conclusions are different from the results of the articles chosen by the BRATS authors themselves. The articles selected by the BRATS authors showed that using methylphenidate is safe and effective. However, the BRATS final conclusion does not reflect the aforementioned and should not be used to support decisions on the use of methylphenidate.

Attention-based classification pattern, a research domain criteria framework, in youths with bipolar disorder and attention-deficit/hyperactivity disorder.

OBJECTIVE: The National Institute of Mental Health has initiated the Research Domain Criteria (RDoC) project. Instead of using disorder categories as the basis for grouping individuals, the RDoC suggests finding relevant dimensions that can cut across traditional disorders. Our aim was to use the RDoC's framework to study patterns of attention deficit based on results of Conners' Continuous Performance Test (CPT II) in youths diagnosed with bipolar disorder (BD), attention-deficit/hyperactivity disorder (ADHD), BD+ADHD and controls. METHOD: Eighteen healthy controls, 23 patients with ADHD, 10 with BD and 33 BD+ADHD aged 12-17 years old were assessed. Pattern recognition was used to partition subjects into clusters based simultaneously on their performance in all CPT II variables. A Fisher's linear discriminant analysis was used to build a classifier. RESULTS: Using cluster analysis, the entire sample set was best clustered into two new groups, A and B, independently of the original diagnoses. ADHD and BD+ADHD were divided almost 50% in each subgroup, and there was an agglomeration of controls and BD in group B. Group A presented a greater impairment with higher means in all CPT II variables and lower Children's Global Assessment Scale. We found a high cross-validated classification accuracy for groups A and B: 95.2%. Variability of response time was the strongest CPT II measure in the discriminative pattern between groups A and B. CONCLUSION: Our classificatory exercise supports the concept behind new approaches, such as the RDoC framework, for child and adolescent psychiatry. Our approach was able to define clinical subgroups that could be used in future pathophysiological and treatment studies.

Methylphenidate use in children with attention deficit hyperactivity disorder / Uso de metilfenidato em crianças com transtorno de déficit de atenção e hiperatividade

A Brazilian Health Technology Assessment Bulletin (BRATS) article regarding scientific evidence of the efficacy and safety of methylphenidate for treating attention deficit hyperactivity disorder (ADHD) has caused much controversy about its methods. Considering the relevance of BRATS for public health in Brazil, we critically reviewed this article by remaking the BRATS search and discussing its methods and results. Two questions were answered: did BRATS include all references available in the literature? Do the conclusions reflect the reviewed articles? The results indicate that BRATS did not include all the references from the literature on this subject and also that the proposed conclusions are different from the results of the articles chosen by the BRATS authors themselves. The articles selected by the BRATS authors showed that using methylphenidate is safe and effective. However, the BRATS final conclusion does not reflect the aforementioned and should not be used to support decisions on the use of methylphenidate.

O Boletim Brasileiro de Avaliação de Tecnologias em Saúde (BRATS), em matéria sobre as evidências científicas da eficácia e segurança do metilfenidato para o transtorno de déficit de atenção e hiperatividade (TDAH), gerou controvérsias sobre sua metodologia. Considerando a relevância do BRATS para a saúde pública no Brasil, realizou-se análise crítica dessa matéria ao refazer a busca do BRATS e discutir sua metodologia e achados. Foram respondidas duas perguntas:o BRATS incluiu todas as referências disponíveis na literatura? As conclusões refletiram os textos revisados? Identificou-se que o BRATS não incluiu todas as referências da literatura sobre o tema e que as conclusões propostas estão diferentes dos resultados dos artigos escolhidos pelos próprios autores do BRATS. Os artigos selecionados pelos autores do BRATS apontam para a eficácia e segurança do uso do metilfenidato. Entretanto, a conclusão final dos autores não reflete isso e não deveria ser usada como referência para orientar decisões sobre o uso do metilfenidato.

Mood disorders in childhood and adolescence.

The identification and treatment of mood disorders in children and adolescents has grown over the last decades. Major depression is one of the most common and debilitating disorders worldwide, imposing a massive burden to the youth population. Bipolar disorder is being increasingly recognized as having its roots early in life, and its presentation during childhood and adolescence has been submitted to extensive research. This review aims to highlight clinical aspects of the current knowledge on mood disorders in the pediatric population, presenting updated information on epidemiology, diagnostic procedures, and management strategies. Limitations of available evidence and future directions of research in the field are also discussed.

Mood disorders in childhood and adolescence

The identification and treatment of mood disorders in children and adolescents has grown over the last decades. Major depression is one of the most common and debilitating disorders worldwide, imposing a massive burden to the youth population. Bipolar disorder is being increasingly recognized as having its roots early in life, and its presentation during childhood and adolescence has been submitted to extensive research. This review aims to highlight clinical aspects of the current knowledge on mood disorders in the pediatric population, presenting updated information on epidemiology, diagnostic procedures, and management strategies. Limitations of available evidence and future directions of research in the field are also discussed.

Avaliação volumétrica e neuroquímica do córtex pré-frontal dorsolateral esquerdo e pacientes pediátricos com transtorno depressivo maior: um estudo utilizando espectroscopia por ressonância magnética de prótron / Volumetric and neurochemical evaluation of the left dorsolateral prefrontal cortex in pediatric patients with major depressive disorder: a study using proton magnetic resonance spectroscopy

A Ressonância Magnética e a Espectroscopia por Ressonância Magnética de Hidrogênio têm sido empregadas em estudos anatômicos e neuroquímicos do Transtorno Depressivo Maior (TDM). Dezenove crianças com TDM e 24 controles saudáveis foram avaliados em um magneto de 1,5 Tesla (Philips Intera 8.1.1.). Em comparação aos controles saudáveis, crianças com TDM apresentaram: menores volumes de hipocampo esquerdo; e no voxel único em CPFDL esquerdo: menores níveis dos compostos de colina, e maiores níveis de mio-inositol em CPFDL esquerdo. Menores níveis dos compostos de colina podem refletir uma diminuição da renovação de membranas. Maiores níveis de mio-inositol podem representar uma alteração no sistema de segundos mensageiros intracelulares / Magnetic resonance imaging and proton magnetic resonance spectroscopy have been applied to anatomical and neurochemical studies of Major Depressive Disorder (MDD). Nineteen children with MDD and 24 healthy controls were evaluated on a 1.5 Tesla (Philips Intera 8.1.1.) MRI. Compared to healthy controls, children with MDD presented: smaller left hippocampal volumes; and lower levels of choline-containing-compounds and higher myo-inositol levels in the left DLPFC. Lower levels of choline-containing-compounds in pediatric patients with MDD may reflect lower cell membrane turn-over. Higher myo-inositol levels in MDD may represent a disturbed secondary messengers system...