期刊
CURRENT OPINION IN NEUROBIOLOGY
卷 79, 期 -, 页码 -出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.conb.2022.102674
关键词
Immune system; CNS; Microglia; Neurodevelopmental disorders; Synaptic pruning
There is a discussion about whether microglia are essential for healthy neurodevelopment, as reduced numbers or altered functions of microglia do not necessarily lead to neurodevelopmental disorders. Neuro-psychiatric symptoms seem to develop primarily in adulthood, challenging the concept associating microglia deficits with NDDs.
There is a consensus in the field that microglia play a promi-nent role in neurodevelopmental processes like synaptic pruning and neuronal network maturation. Thus, a current momentum of associating microglia deficits with neuro-developmental disorders (NDDs) emerged. This concept is challenged by rodent studies and clinical data. Intriguingly, reduced numbers of microglia or altered microglial functions do not necessarily lead to overt NDD phenotypes, and neuro-psychiatric symptoms seem to develop primarily in adulthood. Hence, it remains open for discussion whether microglia are truly indispensable for healthy neurodevelopment. Here, we critically discuss the role of microglia in synaptic pruning and highlight area-and age dependency. We propose an updated model of microglia-mediated synaptic pruning in the context of NDDs and discuss the potential of targeting microglia for treatment of these disorders.
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