Department of Neural and Pain Sciences, Dental School; & Program in Neuroscience, University of Maryland, Baltimore, MD 21201-1586, USA.
Int Rev Neurobiol. 2011;97:207-25. doi: 10.1016/B978-0-12-385198-7.00008-4.
Previous studies have established the role of the medullary dorsal horn or the subnucleus caudalis of the spinal trigeminal complex, a homolog of the dorsal horn of the spinal cord, in trigeminal pain processing. In addition to the medullary dorsal horn, recent studies have pointed out increased excitability and sensitization of trigeminal interpolaris and caudalis transition zone (Vi/Vc) following deep orofacial injury, involving neuron-glia-cytokine interactions. The Vi/Vc transition zone accesses rostral brain regions that are important for descending pain modulation, and somatovisceral and somatoautonomic processing and plays a unique role in coordinating trigeminal nocifensive responses.
先前的研究已经确立了延髓背角或三叉神经脊束核尾侧亚核(脊髓背角的同源物)在三叉神经痛处理中的作用。除了延髓背角,最近的研究还指出,深部口腔面部损伤后,三叉神经节中脑桥核和尾核过渡区(Vi/Vc)的兴奋性和敏感性增加,涉及神经元-神经胶质-细胞因子相互作用。Vi/Vc 过渡区与控制下行性疼痛调制、躯体-内脏和躯体-自主加工的脑区相连,在协调三叉神经伤害性反应方面发挥着独特的作用。
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