Physical exe rcise effectively alleviates chronic pain associated with complex regional pain syndrome type-Ⅰ.However,the mechanism of exe rcise-induced analgesia has not been clarified.Recent studies have shown that ...Physical exe rcise effectively alleviates chronic pain associated with complex regional pain syndrome type-Ⅰ.However,the mechanism of exe rcise-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 23in the spinal cord reve rsed the analgesic effect of high-intensity swimming exercise on chronic post-ischemic pain and the anti-inflammato ry pola rization 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.展开更多
目的分析寻常型银屑病皮损组织中chemerin和Sprouty1蛋白表达与病情严重程度的相关性。方法选取2018年2月-2020年11月在无锡市第五人民医院和江南大学附属医院皮肤性病科门诊接受治疗的68例寻常型银屑病患者作为实验组,以同期在两家医...目的分析寻常型银屑病皮损组织中chemerin和Sprouty1蛋白表达与病情严重程度的相关性。方法选取2018年2月-2020年11月在无锡市第五人民医院和江南大学附属医院皮肤性病科门诊接受治疗的68例寻常型银屑病患者作为实验组,以同期在两家医院皮肤性病科门诊体检的68名健康者作为对照组。采集寻常型银屑病患者躯干或四肢的皮损组织及健康者的正常皮肤组织,采用免疫组化及Western blotting检测皮肤组织中chemerin、Sprouty1蛋白相对表达量,RT-PCR检测皮肤组织中chemerin、Sprouty1 mRNA相对表达量,采用Pearson相关分析法分析chemerin、Sprouty1蛋白相对表达量与银屑病皮损面积和严重程度指数(PASI)的相关性。结果免疫组化检测结果显示,两组皮肤组织中均有chemerin、Sprouty1蛋白的表达。Chemerin蛋白在实验组皮损脂肪组织中呈高表达,在对照组皮下脂肪组织中少量表达;Sprouty1蛋白在实验组皮损颗粒层细胞膜中少量表达,在对照组表皮全层细胞的细胞膜和细胞质中呈高表达。实验组chemerin mRNA(1.478±0.14 vs. 0.858±0.08,P<0.001)和蛋白(1.138±0.12 vs. 0.789±0.06,P<0.001)相对表达量明显高于对照组,Sprouty1 mRNA(0.837±0.04 vs. 1.346±0.09,P<0.001)和蛋白(0.646±0.05 vs. 1.212±0.12,P<0.001)相对表达量明显低于对照组。Pearson相关分析显示,chemerin蛋白相对表达量与PASI评分呈正相关(r=0.536,P<0.05),Sprouty1蛋白相对表达量与PASI评分呈负相关(r=-0.619,P<0.05)。结论寻常型银屑病皮损组织中chemerin及Sprouty1蛋白相对表达量与PASI评分存在相关性。展开更多
基金National Key R&D Program of China,Nos.2019YFA0110300 (to LZ),2021YFA1201400 (to LZ)Natural Science Foundation of Shanghai,No.21ZR1468600 (to LZ)Open Fund of the Key Laboratory of Cellular Physiology (Shanxi Medical University),Ministry of Education,No.KLMEC/SXMU-201910 (to XJ)。
文摘Physical exe rcise effectively alleviates chronic pain associated with complex regional pain syndrome type-Ⅰ.However,the mechanism of exe rcise-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 23in the spinal cord reve rsed the analgesic effect of high-intensity swimming exercise on chronic post-ischemic pain and the anti-inflammato ry pola rization 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.
文摘目的分析寻常型银屑病皮损组织中chemerin和Sprouty1蛋白表达与病情严重程度的相关性。方法选取2018年2月-2020年11月在无锡市第五人民医院和江南大学附属医院皮肤性病科门诊接受治疗的68例寻常型银屑病患者作为实验组,以同期在两家医院皮肤性病科门诊体检的68名健康者作为对照组。采集寻常型银屑病患者躯干或四肢的皮损组织及健康者的正常皮肤组织,采用免疫组化及Western blotting检测皮肤组织中chemerin、Sprouty1蛋白相对表达量,RT-PCR检测皮肤组织中chemerin、Sprouty1 mRNA相对表达量,采用Pearson相关分析法分析chemerin、Sprouty1蛋白相对表达量与银屑病皮损面积和严重程度指数(PASI)的相关性。结果免疫组化检测结果显示,两组皮肤组织中均有chemerin、Sprouty1蛋白的表达。Chemerin蛋白在实验组皮损脂肪组织中呈高表达,在对照组皮下脂肪组织中少量表达;Sprouty1蛋白在实验组皮损颗粒层细胞膜中少量表达,在对照组表皮全层细胞的细胞膜和细胞质中呈高表达。实验组chemerin mRNA(1.478±0.14 vs. 0.858±0.08,P<0.001)和蛋白(1.138±0.12 vs. 0.789±0.06,P<0.001)相对表达量明显高于对照组,Sprouty1 mRNA(0.837±0.04 vs. 1.346±0.09,P<0.001)和蛋白(0.646±0.05 vs. 1.212±0.12,P<0.001)相对表达量明显低于对照组。Pearson相关分析显示,chemerin蛋白相对表达量与PASI评分呈正相关(r=0.536,P<0.05),Sprouty1蛋白相对表达量与PASI评分呈负相关(r=-0.619,P<0.05)。结论寻常型银屑病皮损组织中chemerin及Sprouty1蛋白相对表达量与PASI评分存在相关性。
