探讨经皮穴位电刺激通过 TRPV1/TRPA1-cGMP 通路对小CCI 大鼠背根神经节中推拿镇痛起始机制的影响。

Exploring the Analgesic Initiation Mechanism of Tuina in the Dorsal Root Ganglion of Minor CCI Rats via the TRPV1/TRPA1-cGMP Pathway.

机构信息

School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese Medicine, Beijing 102488, China.

出版信息

Pain Res Manag. 2024 Jul 24;2024:2437396. doi: 10.1155/2024/2437396. eCollection 2024.

Abstract

Tuina is a treatment method in traditional Chinese medicine which has analgesic effects and effectively alleviates the symptoms of neuropathic pain (NP). Transient receptor potential vanilloid type 1 (TRPV1) and transient receptor potential ankyrin type 1 (TRPA1) play major roles in transmitting nociceptive sensory signals in the nociceptive primary sensory dorsal root ganglion (DRG) nerve. The nitric oxide (NO)/cyclic guanosine 3',5'-monophosphate(cGMP) pathway exerts both nociceptive and antinociceptive effects in various chronic pain models. TRPV1 and TRPA1 mediate the influx of calcium, which stimulates the generation of NO. Subsequently, NO activates the NO/cGMP/protein kinase G (PKG) signaling pathway, thereby improving hyperalgesia. In the present study, oa rat model of NP with minor chronic constriction injury (CCI) of the right sciatic nerve of NP was established. The results of behavioral testing showed that, after a one-time tuina intervention, the mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL) were prolonged to varying degrees in the tuina group compared with the model group. Similarly, the expression of TRPV1, TRPA1, NO, soluble guanylate cyclase (sGC), cGMP, and PKG1 was significantly decreased in the DRG of the tuina and tuina + TRPV1/TRPA1 antagonist group was significantly decreased. These findings suggest that the tuina intervention can effectively improve the symptoms of thermal and mechanical allodynia caused by peripheral nerve injuries. Tuina exerts immediate analgesic effects through the TRPV1/TRPA1-NO-cGMP-PKG signaling pathway.

摘要

推拿是一种中医治疗方法,具有镇痛作用,能有效缓解神经病理性疼痛(NP)的症状。瞬时受体电位香草酸亚型 1(TRPV1)和瞬时受体电位锚蛋白 1(TRPA1)在传递伤害性感觉信号方面起着主要作用伤害性初级感觉背根神经节(DRG)神经。一氧化氮(NO)/环鸟苷酸 3',5'-单磷酸(cGMP)途径在各种慢性疼痛模型中均具有伤害性和抗伤害性作用。TRPV1 和 TRPA1 介导钙内流,刺激一氧化氮的产生。随后,NO 激活 NO/cGMP/蛋白激酶 G(PKG)信号通路,从而改善痛觉过敏。在本研究中,建立了一种伴有轻微慢性坐骨神经结扎(CCI)的 NP 大鼠模型。行为学测试结果表明,与模型组相比,单次推拿干预后,推拿组机械缩足阈值(MWT)和热缩足潜伏期(TWL)均有不同程度延长。同样,在推拿和推拿+TRPV1/TRPA1 拮抗剂组的 DRG 中,TRPV1、TRPA1、NO、可溶性鸟苷酸环化酶(sGC)、cGMP 和 PKG1 的表达均显著降低。这些发现表明,推拿干预可有效改善周围神经损伤引起的热和机械痛觉过敏症状。推拿通过 TRPV1/TRPA1-NO-cGMP-PKG 信号通路发挥即时镇痛作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/046f/11300051/2cef80b7a2c0/PRM2024-2437396.001.jpg

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