Environmental signals on microglial function during brain development, neuroplasticity, and disease

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Abstract

Recent discoveries on the neurobiology of the immunocompetent cells of the central nervous system (CNS), microglia, have been recognized as a growing field of investigation on the interactions between the brain and the immune system. Several environmental contexts such as stress, lesions, infectious diseases, and nutritional and hormonal disorders can interfere with CNS homeostasis, directly impacting microglial physiology. Despite many encouraging discoveries in this field, there are still some controversies that raise issues to be discussed, especially regarding the relationship between the microglial phenotype assumed in distinct contexts and respective consequences in different neurobiological processes, such as disorders of brain development and neuroplasticity. Also, there is an increasing interest in discussing microglial–immune system cross-talk in health and in pathological conditions. In this review, we discuss recent literature concerning microglial function during development and homeostasis. In addition, we explore the contribution of microglia to synaptic disorders mediated by different neuroinflammatory outcomes during pre-and postnatal development, with long-term consequences impacting on the risk and vulnerability to the emergence of neurodevelopmental, neurodegenerative, and neuropsychiatric disorders.

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Chagas, L. da S., Sandre, P. C., Ribeiro, N. C. A. R. E., Marcondes, H., Silva, P. O., Savino, W., & Serfaty, C. A. (2020, March 2). Environmental signals on microglial function during brain development, neuroplasticity, and disease. International Journal of Molecular Sciences. MDPI AG. https://doi.org/10.3390/ijms21062111

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