Spinal microglia contribute to sustained inflammatory pain via amplifying neuronal activity

Nan Gu, Min-Hee Yi, Madhuvika Murugan, Manling Xie, Sebastian Parusel, Jiyun Peng, Ukpong B. Eyo, Christine L. Hunt, Hailong Dong & Long-Jun Wu
Abstract Microglia are highly dynamic immune cells of the central nervous system (CNS). Microglial processes interact with neuronal elements constantly on the order of minutes. The functional significance of this acute microglia-neuron interaction and its potential role in the context of pain is still largely unknown. Here, we found that spinal microglia increased their process motility and electrophysiological reactivity within an hour after the insult in a mouse model of formalin-induced acute, sustained, inflammatory pain....
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