Distribution and subacute modulation of endocannabinoid metabolizing enzymes in the trigeminal complex and midbrain in a pre-clinical model of post-traumatic headache.

IF 7.9 1区 医学 Q1 CLINICAL NEUROLOGY
Gurueswar Nagarajan, Yumin Zhang
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引用次数: 0
创伤后头痛临床前模型中三叉神经复合体和中脑内源性大麻素代谢酶的分布和亚急性调节。
背景:创伤后头痛(PTH)是一种以继发性头侧疼痛为特征的轻度外伤性脑损伤(mTBI)的神经系统衰弱后遗症。内源性大麻素系统(ECS)是伤害感觉的关键调节剂,但mTBI后其代谢机制在头痛觉回路中的具体时空变化尚不清楚。方法:采用原位杂交(ISH)技术,首次表征了三叉神经复合体(三叉神经节- TG、三叉神经根入口区- TREZ、三叉神经尾核- TNC)和中脑(导管管周围灰质- PAG、中脑背- DR)参与疼痛调节的主要内源性大麻素(eCB)合成酶(Napepld、Gde1、Dagla、Daglb)、水解酶(Faah、Mgll)和大麻素受体(Cnr1和Cnr2)的基因表达水平。随后,我们采用小鼠重复性闭合性头部mTBI模型,诱导头痛,通过qPCR和ISH评估损伤后一周的全球eCB酶基因表达变化和区域特异性变化。结果:基线特征揭示了复杂的共表达模式,Gde1和Daglb转录本在TG、TNC和PAG中的含量明显高于Napepld和Dagla。mtbi后7天,恰逢pth样症状的出现,我们发现外周TREZ中水解酶Faah显著上调,但TG感觉神经元中没有。在中枢,尽管在TNC中没有观察到差异,但mTBI诱导腹外侧PAG (vlPAG)和DR中mgl的上调,特别是在DR VGlut3+神经元中。结论:这些发现证明了一种新的神经病理机制,mTBI触发了编码ecb降解酶的基因的持续、区域特异性上调。因此,关键外周和中枢性疼痛调节区域的eCB水解酶的亚急性调节可能有助于mTBI相关的头痛的维持。临床试验号:不适用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Headache and Pain
Journal of Headache and Pain 医学-临床神经学
CiteScore
11.80
自引率
13.50%
发文量
143
审稿时长
6-12 weeks
期刊介绍: The Journal of Headache and Pain, a peer-reviewed open-access journal published under the BMC brand, a part of Springer Nature, is dedicated to researchers engaged in all facets of headache and related pain syndromes. It encompasses epidemiology, public health, basic science, translational medicine, clinical trials, and real-world data. With a multidisciplinary approach, The Journal of Headache and Pain addresses headache medicine and related pain syndromes across all medical disciplines. It particularly encourages submissions in clinical, translational, and basic science fields, focusing on pain management, genetics, neurology, and internal medicine. The journal publishes research articles, reviews, letters to the Editor, as well as consensus articles and guidelines, aimed at promoting best practices in managing patients with headaches and related pain.
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