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Fu R, Li S, Li S, Gong X, Zhou G, Wang Y, Ding R, Zhu Z, Zhang L, Li Y. P2X4 receptor in the dorsal horn contributes to BDNF/TrkB and AMPA receptor activation in the pathogenesis of remifentanil-induced postoperative hyperalgesia in rats. Neurosci Lett 2021; 750:135773. [PMID: 33639220 DOI: 10.1016/j.neulet.2021.135773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/20/2021] [Accepted: 02/20/2021] [Indexed: 11/19/2022]
Abstract
The mechanism underlying the high incidence of remifentanil-induced postoperative hyperalgesia is unclear. Also, no effective prevention method exists. Inflammatory pain-related studies showed that P2X4 purinergic receptors (P2X4Rs) in the dorsal horn of the spinal cord and dorsal root ganglia are essential for maintaining allodynia caused by inflammation. However, little is known about its role in opioid-induced hyperalgesia. This study aimed to determine the role of P2X4R and related signaling pathways in the remifentanil-induced postoperative hyperalgesia (RIH) model. The study simulated the remifentanil infusion and surgical incision during general anesthesia. The mRNA and protein expression level of P2X4R in rats with RIH model increased from 2 h to 48 h after the surgery. The administration of P2X4R inhibitors prevented the occurrence of RIH, resulting in a reduction in mechanical and thermal pain. Moreover, P2X4R was involved in RIH in male and female rats, indicating no sex-specific difference. P2X4R also increased the expression of AMPA receptor subunit GluA1 in a brain-derived neurotrophic factor (BDNF) / tyrosine receptor kinase B (TrkB) dependent manner. The results from whole-cell patch-clamp recording suggested that P2X4R also regulated AMPA receptor-mediated miniature excitatory postsynaptic currents and participated in the synaptic plasticity of spinal dorsal horn neurons. In summary, P2X4R was involved in AMPAR expression, electrophysiological function, and synaptic plasticity of spinal dorsal horn neurons through BDNF/TrkB signaling. This might be the mechanism underlying RIH, and hence inhibition of P2X4R might be a potential treatment strategy.
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Affiliation(s)
- Rui Fu
- Department of Anesthesiology, Tianjin Second People's Hospital, Tianjin, 300192, China
| | - Shixin Li
- Department of Emergency Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Shuang Li
- Department of Endoscopic Diagnosis and Treatment, Tianjin Second People's Hospital, Tianjin, 300192, China
| | - Xiaojie Gong
- Department of Anesthesiology, Tianjin Second People's Hospital, Tianjin, 300192, China
| | - Guoqiang Zhou
- Department of Anesthesiology, Tianjin Second People's Hospital, Tianjin, 300192, China
| | - Yaoqi Wang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin, 300052, China
| | - Ran Ding
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin, 300052, China
| | - Ziran Zhu
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin, 300052, China
| | - Linlin Zhang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin, 300052, China
| | - Yize Li
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin Research Institute of Anesthesiology, Tianjin, 300052, China.
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Lv CC, Xia ML, Shu SJ, Chen F, Jiang LS. Attenuation of Remifentanil-Induced Hyperalgesia by Betulinic Acid Associates with Inhibiting Oxidative Stress and Inflammation in Spinal Dorsal Horn. Pharmacology 2018; 102:300-306. [PMID: 30253391 DOI: 10.1159/000493144] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 08/21/2018] [Indexed: 11/19/2022]
Abstract
Remifentanil-induced hyperalgesia (RIH) is known to be associated with oxidative stress and inflammation. Betulinic acid (BA) was reported to reduce visceral pain owing to its anti-oxidative and anti-inflammatory potential. Here, we -explored whether BA can attenuate RIH through inhibiting oxidative stress and inflammation in spinal dorsal horn. Sprague-Dawley rats were randomly divided into 4 groups: Control, Incision, RIH, and RIH pre-treated with BA. After pretreated with BA (25 mg/kg, i.g.) for 7 days, rats were subcutaneously infused with remifentanil (40 μg/kg) for 30 min during right plantar incision surgery to induce RIH. The paw withdrawal mechanical threshold (PWMT), paw withdrawal thermal latency (PWTL), spinal oxidative stress and inflammatory mediators were determined. Intraoperative remifentanil infusion induced postoperative hyperalgesia, as evidenced by the significant decrease in PWMT and PWTL (p < 0.01), and the significant increase in oxidative stress and inflammation evidenced by up-regulations of malondialdehyde, 3-nitrotyrosine, interleukin-1β and tumour necrosis factor-α (p < 0.01) in spinal dorsal horn and matrix metalloproteinase-9 (MMP-9) activity (p < 0.01) in dorsal root ganglion, as well as a decrease in manganese superoxide -dismutase activity (p < 0.01) compared with control and -incision groups. All these results mentioned above were markedly reversed by pre-treatment with BA (p < 0.01) compared with RIH group. These findings demonstrated that BA can effectively attenuate RIH, which associates with potentially inhibiting oxidative stress and subsequently down-regulating MMP-9-related pro-inflammatory cyokines in spinal dorsal horn.
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Affiliation(s)
- Chang-Cheng Lv
- Department of Anesthesiology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Man-Li Xia
- Institute of Physiological Function, Medical College of Jiaxing University, Jiaxing, China
| | - Shu-Juan Shu
- Department of Obstetrics, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fei Chen
- Institute of Physiological Function, Medical College of Jiaxing University, Jiaxing, China
| | - Li-Shan Jiang
- Department of Anesthesiology and Pain Clinic, The First Affiliated Hospital of Jiaxing University, Jiaxing, China,
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