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Advisor(s)
Abstract(s)
Introdução: Desde há algumas décadas que
se pensa que uma hiperactividade dopaminérgica
da via mesolímbica esteja implicada na
génese dos sintomas positivos da esquizofrenia.
Objectivos: Nesta revisão da literatura procurámos
interligar as várias áreas do conhecimento
actual, procurando fazer a ponte com
a prática clínica.
Métodos: Foi efectuada uma pesquisa sistemática
da literatura em inglês, até Abril de
2014 através da PUBMED utilizando como
termos MeSH (medical subject headings)
“mesolimbic” e “psychosis”, tendo-se incluído
revisões da literatura.
Resultados e Conclusões: Foram encontrados
111 artigos, tendo-se excluído 56 por,
após leitura do resumo, se concluir que não
estavam relacionados com o tema. Dos restantes
55 foram seleccionados 14 artigos tendo
sido mantidas as abreviaturas em inglês
para facilitar a sua consulta posterior. São
apresentadas evidências sobre o papel desempenhado
por vários sistemas reguladores
no desenvolvimento dos sintomas positivos
associados não apenas a esta doença mas às
várias perturbações em que ocorrem, assim
como a possível relação entre esses vários
factores. Entre os vários sistemas discutidos
conta-se a influência do neurodesenvolvimento,
da regulação pelos receptores nicotí-
nicos da acetilcolina, a influência dos canais
de potássio KCNQ, a regulação por péptidos
neurotransmissores, pela adenosina e pela
fosfodiesterase 10A, assim como avanços na
compreensão da etiologia da esquizofrenia.
Trata-se, portanto, de um enunciado do substrato
neurobiológico dos sintomas positivos.
Background: For several decades now it is thought that dopamine hyperactivity on the mesolimbic pathway is implied on the genesis of schizophrenic psychotic symptoms. Aims: In this review we sought to interconnect the various areas of current knowledge, seeking to relate them to clinical practice. Methods: A systematic English language PUBMED search was done, using MeSH (medical subject headings) terms “mesolimbic” and “psychosis”, until April 2014, including reviews. Results and Conclusions: We found 111 papers, and excluded 56 after an abstract review. We selected 14 papers of the remaining 55. We present evidence on the part played by the neurodevelopment, acetylcholine nicotinic receptor regulation, influence of KCNQ potassium channels, neurotransmitter peptides, adenosine and phosphodiesterase 10A, as well as advances on understanding the etiology of schizophrenia on the development of psychotic symptoms associated not only with this disease but also with several disturbances on which they can occur, as well as a possible relation between these various influences, where it has been possible to do so. It is, therefore, an enunciation of the neurobiological substrate underlying psychotic symptoms.
Background: For several decades now it is thought that dopamine hyperactivity on the mesolimbic pathway is implied on the genesis of schizophrenic psychotic symptoms. Aims: In this review we sought to interconnect the various areas of current knowledge, seeking to relate them to clinical practice. Methods: A systematic English language PUBMED search was done, using MeSH (medical subject headings) terms “mesolimbic” and “psychosis”, until April 2014, including reviews. Results and Conclusions: We found 111 papers, and excluded 56 after an abstract review. We selected 14 papers of the remaining 55. We present evidence on the part played by the neurodevelopment, acetylcholine nicotinic receptor regulation, influence of KCNQ potassium channels, neurotransmitter peptides, adenosine and phosphodiesterase 10A, as well as advances on understanding the etiology of schizophrenia on the development of psychotic symptoms associated not only with this disease but also with several disturbances on which they can occur, as well as a possible relation between these various influences, where it has been possible to do so. It is, therefore, an enunciation of the neurobiological substrate underlying psychotic symptoms.
Description
Keywords
Perturbações psicóticas Esquizofrenia
Citation
Psilogos. 2015; 13(1): 79-104
Publisher
Hospital Prof. Dr. Fernando Fonseca, E.P.E.