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重复轻度创伤性脑损伤 (RmTBI) 修改了 nociception,并破坏了下降疼痛通路内的氧能连接

Jennaya Christensen¹, Naomi MacPherson¹, Crystal Li¹

¹Department of Neuroscience, Central Clinical School, 99 Commercial Road, VIC, 3004, Melbourne, Australia.

The journal of headache and pain

|June 14, 2023

概括

重复轻度创伤性脑损伤 (RmTBI) 通过改变素激应系统,特别是减少素细胞体和下丘脑向PAG的投射,导致慢性疼痛. 这项研究阐明了创伤后头痛和疼痛慢性化背后的机制.

科学领域:

神经科学是一个神经科学.
神经创伤是一种神经创伤.
疼痛研究疼痛研究

背景情况:

重复轻度创伤性脑损伤 (RmTBI) 与慢性疼痛和创伤后头痛有关.
功能障碍下降疼痛调制 (DPM) 可能是这些慢性疾病的基础.
产生抗 nociceptive orexin 的 orexinergic 系统是 RmTBI 诱导的疼痛变化的潜在调解者.

研究的目的:

调查RmTBI对氧系统连接性的影响.
为了检查RmTBI,OREXINERGIC投射和疼痛调节通路之间的关系.
为了澄清导致RmTBI后慢性疼痛和创伤后头痛的机制.

主要方法:

在Sprague Dawley大鼠中使用了神经管道追踪 (逆行和逆行).
在成年雄性大鼠中诱导了RmTBI或假伤害.
评估了类似焦虑的行为,感觉敏感性和免疫组织化学.

主要成果:

RmTBI导致了改变的 nociception 和减少焦虑.
在RmTBI组中观察到素细胞体的丧失和下丘脑向周水道灰色 (PAG) 的突出减少.
没有发现RmTBI对侧向双核 (lPBN) 和侧向下丘脑 (LH) 之间的神经元连接有显著影响.

结论:

在RmTBI引起的结构和生理变化,在Orexinergic系统.
这些变化,包括素细胞的丧失和突出的改变,可能会导致慢性疼痛和创伤后头痛.
该研究提供了对导致长期疼痛病理的急性创伤后变化的机制性见解.

关键词:

这是CGRP的CGRP.脑震荡是一种脑震荡.侧面的下丘脑侧面的下丘脑侧面的抛臂核.周边水道灰色周边水道灰色创伤后头痛创伤后头痛

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