Dural neurogenic inflammation induced by neuropathic pain is specific to cranial region

被引:18
作者
Filipovic, B. [1 ,2 ,3 ]
Matak, I. [1 ,2 ]
Lackovic, Z. [1 ,2 ]
机构
[1] Univ Zagreb, Sch Med, Dept Pharmacol, Lab Mol Neuropharmacol, Zagreb 10000, Croatia
[2] Univ Zagreb, Sch Med, Croatian Brain Res Inst, Zagreb 10000, Croatia
[3] Univ Hosp Sveti Duh, Dept Otorhinolaryngol Head & Neck Surg, Zagreb, Croatia
关键词
Dural neurogenic inflammation; Trigeminal region; Nerve injury; Dural extravasation; Cellular inflammatory response; MAST-CELL; VASCULAR HEADACHES; RECEPTOR AGONISTS; NERVE-FIBERS; SPINAL DURA; MIGRAINE; MATER; RAT; EXTRAVASATION; STIMULATION;
D O I
10.1007/s00702-013-1144-4
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Up to now, dural neurogenic inflammation (DNI) has been studied primarily as a part of migraine pain pathophysiology. A recent study from our laboratory demonstrated the occurrence of DNI in response to peripheral trigeminal nerve injury. In this report, we characterize the occurrence of DNI after different peripheral nerve injuries in and outside of the trigeminal region. We have used the infraorbital nerve constriction injury model (IoNC) as a model of trigeminal neuropathic pain. Greater occipital nerve constriction injury (GoNC), partial transection of the sciatic nerve (ScNT) and sciatic nerve constriction injury (SCI) were employed to characterize the occurrence of DNI in response to nerve injury outside of the trigeminal region. DNI was measured as colorimetric absorbance of Evans blue plasma protein complexes. In addition, cellular inflammatory response in dural tissue was histologically examined in IoNC and SCI models. In comparison to the strong DNI evoked by IoNC, a smaller but significant DNI has been observed following the GoNC. However, DNI has not been observed either in cranial or in lumbar dura following ScNT and SCI. Histological evidence has demonstrated a dural proinflammatory cell infiltration in the IoNC model, which is in contrast to the SCI model. Inflammatory cell types (lymphocytes, plasma cells, and monocytes) have indicated the presence of sterile cellular inflammatory response in the IoNC model. To our knowledge, this is the first observation that the DNI evoked by peripheral neuropathic pain is specific to the trigeminal area and the adjacent occipital area. DNI after peripheral nerve injury consists of both plasma protein extravasation and proinflammatory cell infiltration.
引用
收藏
页码:555 / 563
页数:9
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