局部与长程抑制性投射调控脊髓GRPR阳性神经元

脊髓背角中表达胃泌素释放肽受体的（GRPR+）神经元在痒觉信号处理中发挥至关重要的作用。然而，GRPR+神经元如何受到局部环路调控尚不完全清楚。我们发现脊髓背角甘丙肽阳性神经元与脊髓背角GRPR+神经元形成抑制性突触联系，并在GRPR+神经元依赖性痒觉信号传递的门控中起关键性作用。该项工作揭示了痒觉信号处理的门控机制。

Gastrin-releasing peptide receptor-expressing (GRPR+) neurons in the spinal dorsal horn play a critical role in itch signal processing. However, how GRPR+ neurons are regulated by local neural circuits remains incompletely understood. We found that galanin-positive neurons in the spinal dorsal horn form inhibitory synaptic connections with GRPR+ neurons in the spinal dorsal horn, and play a pivotal role in the gating of GRPR+ neuron-dependent itch signal transmission. This study uncovers the gating mechanism underlying itch signal processing.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于脊髓GRPR+神经元在痒信号处理中的调控机制，揭示了局部galanin+ GABAergic神经元和nNOS表达的神经元以及来自rostral ventromedial medulla的长程抑制性输入对GRPR+神经元的关键调控作用。