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Brain Behav Immun ; 73: 596-602, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29981831

RESUMO

In a previous study we showed a clear relationship between immune system and behavior in zebrafish and we hypothesized that the immune system is capable of inducing behavioral changes. To further investigate this subject and to address our main question, here we induced an inflammatory response in one group of fish by the inoculation of formalin-inactivated Aeromonoas hydrophila bacterin and compared their social and exploratory behavior with control groups. After the behavioral tests, we also analyzed the expression of cytokines genes and markers of neuronal activity in fish brain. In the bacterin-inoculated fish, the locomotor activity, social preference and exploratory behavior towards a new object were reduced compared to the control fish while the expression of proinflammatory cytokines in the brain was upregulated. With this study we demonstrated for the first time that the immune system is capable of causing behavioral changes that are consistent with the sickness behavior observed in mammals.


Assuntos
Comportamento de Doença/fisiologia , Peixe-Zebra/imunologia , Peixe-Zebra/fisiologia , Animais , Comportamento Animal/fisiologia , Encéfalo/metabolismo , Citocinas/metabolismo , Modelos Animais de Doenças , Comportamento Exploratório/fisiologia , Feminino , Sistema Imunitário/metabolismo , Relações Interpessoais , Locomoção/imunologia , Locomoção/fisiologia , Masculino , Atividade Motora/fisiologia , Neurônios/metabolismo
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