中国神经再生研究(英文版) ›› 2023, Vol. 18 ›› Issue (11): 2535-2544.doi: 10.4103/1673-5374.371373

• 原著:神经损伤修复保护与再生 • 上一篇    下一篇

高强度游泳运动可激活脊髓中Resolvin E1-ChemR23轴减轻慢性缺血后疼痛的伤害感受和神经炎症

  

  • 出版日期:2023-11-15 发布日期:2023-05-05
  • 基金资助:
    国家重点研发计划项目(2019YFA0110300,2021YFA1201400);上海市自然科学基金项目(21ZR1468600);教育部细胞生理学重点实验室(山西医科大学)开放基金项目(KLMEC/SXMU-201910)

High-intensity swimming alleviates nociception and neuroinflammation in a mouse model of chronic post-ischemia pain by activating the resolvin E1-chemerin receptor 23 axis in the spinal cord

Xin Jia1, Ziyang Li1, Xiafeng Shen2, Yu Zhang3, Li Zhang4, Ling Zhang1, *   

  1. 1Department of Neurology and Neurological Rehabilitation, Shanghai Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), School of Medicine, Tongji University, Shanghai, China; 2Department of Rehabilitation, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China; 3Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and the Department of Physiology, Shanxi Medical University, Taiyuan, Shanxi Province, China; 4Key Laboratory of Central CNS Regeneration (Ministry of Education), Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, Guangdong Province, China
  • Online:2023-11-15 Published:2023-05-05
  • Contact: Ling Zhang, PhD, lzhang0808@tongji.edu.cn.
  • Supported by:
    This study was supported by National Key R&D Program of China, Nos. 2019YFA0110300 (to LZ), 2021YFA1201400 (to LZ); the Natural Science Foundation of Shanghai, No. 21ZR1468600 (to LZ); and Open Fund of the Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, No. KLMEC/SXMU-201910 (to XJ).

摘要:

体育运动可有效缓解与复杂性区域疼痛综合征1型相关的慢性痛,但是其镇痛的机制尚不明朗。最近有研究表明,特异性炎症消散因子Resolvin E1可通过结合其受体ChemR23在神经系统中参与减轻病理性疼痛。然而,RvE1-ChemR23轴是否可参与运动对复杂性区域疼痛综合征1型的镇痛作用还未得到证实。因此实验首先以后肢慢性缺血后疼痛小鼠模型模拟复杂性区域疼痛综合征1型,进而采用不同强度的游泳运动来干预慢性缺血后疼痛小鼠,发现只有高强度游泳运动才能减轻小鼠的慢性痛。同时慢性缺血后疼痛小鼠脊髓中RvE1-ChemR23轴显著下调,而高强度游泳运动可恢复RvE1及其受体ChemR23的表达。最后以shRNA沉默脊髓中ChemR23,发现高强度游泳运动对慢性缺血后疼痛小鼠的镇痛作用以及脊髓背角小胶质的抗炎型极化现象被逆转。提示高强度游泳运动可通过介导脊髓内源性RvE1-ChemR23轴对慢性痛产生镇痛作用。

https://orcid.org/0000-0002-8308-6553 (Ling Zhang); https://orcid.org/0000-0002-4219-5702 (Xin Jia)

关键词: 慢性缺血后疼痛, 复杂性区域疼痛综合征, 游泳运动, Resolvin E1, ChemR23, 小胶质细胞, 运动诱导镇痛, 神经炎症, 中枢敏化, 脊髓

Abstract: Physical exercise effectively alleviates chronic pain associated with complex regional pain syndrome type-I. However, the mechanism of exercise-induced analgesia has not been clarified. Recent studies have shown that the specialized pro-resolving lipid mediator resolvin E1 promotes relief of pathologic pain by binding to chemerin receptor 23 in the nervous system. However, whether the resolvin E1-chemerin receptor 23 axis is involved in exercise-induced analgesia in complex regional pain syndrome type-I has not been demonstrated. In the present study, a mouse model of chronic post-ischemia pain was established to mimic complex regional pain syndrome type-I and subjected to an intervention involving swimming at different intensities. Chronic pain was reduced only in mice that engaged in high-intensity swimming. The resolvin E1-chemerin receptor 23 axis was clearly downregulated in the spinal cord of mice with chronic pain, while high-intensity swimming restored expression of resolvin E1 and chemerin receptor 23. Finally, shRNA-mediated silencing of chemerin receptor 23 in the spinal cord reversed the analgesic effect of high-intensity swimming exercise on chronic post-ischemic pain and the anti-inflammatory polarization of microglia in the dorsal horn of the spinal cord. These findings suggest that high-intensity swimming can decrease chronic pain via the endogenous resolvin E1-chemerin receptor 23 axis in the spinal cord.

Key words: central sensitization, chemerin receptor 23, chronic post-ischemia pain, complex regional pain syndrome, exercise-induced analgesia, microglia, neuroinflammation, resolvin E1, spinal cord, swimming