RESUMO
BACKGROUND: The brain-derived neurotrophic factor (BDNF) Val66Met polymorphism (rs6265) has been associated with several neuropsychiatric disorders and regional structural brain changes in adults, but little is known about Val66Met's effect on brain morphology during typical or atypical neurodevelopment. Windows of vulnerability to psychopathology may be associated with the different alleles of the Val66Met polymorphism during childhood and adolescence. METHODOLOGY: We investigated the effect of Val66Met on cortical thickness in MRI scans of 718 children and adolescents (6-12 years old) with typical development, and in those meeting DSM criteria for a psychiatric disorder. RESULTS: Val66Met had a significant effect on cortical thickness. Considering the typically developing group, Met-carriers presented thicker parietal and occipital lobes and prefrontal cortices compared to Val homozygotes. Met-carriers with psychiatric disorders presented thicker medial and lateral temporal cortices than Val homozygotes. Furthermore, a significant genotypeâ¯×â¯psychiatric diagnosis interaction was found: Met-carriers with a psychiatric diagnosis presented thinner bilateral prefrontal cortices than Val homozygotes. CONCLUSION: This study provides evidence that Val66Met is associated with cortical maturation in children and adolescents with and without psychiatric disorders.
Assuntos
Fator Neurotrófico Derivado do Encéfalo/genética , Córtex Cerebral/anatomia & histologia , Córtex Cerebral/crescimento & desenvolvimento , Desenvolvimento Infantil/fisiologia , Transtornos Mentais/genética , Transtornos Mentais/patologia , Brasil , Córtex Cerebral/diagnóstico por imagem , Córtex Cerebral/patologia , Criança , Estudos de Coortes , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Transtornos Mentais/diagnóstico por imagem , Polimorfismo de Nucleotídeo ÚnicoRESUMO
Este é o relato do atendimento de uma das mães dependentes do crack e de seu bebê, que frequentam o Ambulatório de Psiquiatria da Infância e da Adolescência do HCPA. Esta específica abordagem terapêutica visa atender a gestante e o bebê, ainda antes do nascimento, a fim de preservar um de seus direitos básicos, que é o de não ser intoxicado tão prematuramente.(AU)
This is the report of the treatment of one of the crack-dependent mothers and her baby who attended the Childhood and Adolescence Psychiatry outpatient clinic of the HCPA. This specific approach aims at attending the mother and the baby, even before birth, in order to preserve one of his/her basic rights, which is: not be intoxicated so prematurely.(AU)