《中国康复理论与实践》 ›› 2022, Vol. 28 ›› Issue (5): 544-551.doi: 10.3969/j.issn.1006-9771.2022.05.009
收稿日期:
2022-02-17
修回日期:
2022-03-29
出版日期:
2022-05-25
发布日期:
2022-06-10
通讯作者:
张安仁
E-mail:anren0124@163.com
作者简介:
周小珏(1996-),女,汉族,四川内江市人,硕士研究生,主要研究方向:脊髓损伤康复。
基金资助:
ZHOU Xiaojue1,FENG Jing1,PANG Rizhao2,LIU Jie3,ZHANG Anren4()
Received:
2022-02-17
Revised:
2022-03-29
Published:
2022-05-25
Online:
2022-06-10
Contact:
ZHANG Anren
E-mail:anren0124@163.com
Supported by:
摘要:
目的 探讨芳香烃受体/细胞因子信号传导抑制因子2/核转录因子-κB (AHR/SOCS2/NF-κB)信号通路在隔日限食(EODF)疗法减轻脊髓损伤炎症反应中的作用。方法 36只雄性Sprague-Dawley大鼠随机分为假手术组、模型组和EODF组,每组12只。后两组复制C5脊髓半侧钳夹模型。术后EODF组予24 h禁食和摄食交替,不限水,共2周。术前和术后1 d、7 d、14 d行梳理试验。术后14 d取各组脊髓组织,每组4只行HE染色观察病理损伤,4只采用Western blotting检测AHR、SOCS2和NF-κB水平,4只采用逆转录实时定量聚合酶链反应检测AHR、SOCS2、核因子κB抑制因子α (IκBα)、NF-κB、肿瘤坏死因子-α (TNF-α)、白细胞介素-6 (IL-6)的mRNA水平。结果 与假手术组相比,另两组各时间点梳理试验评分降低(P < 0.05),出现空腔、水肿、结构紊乱等病理改变;与模型组相比,EODF组术后14 d梳理试验评分增加(P < 0.05),损伤减轻。与模型组相比,EODF组AHR、SOCS2 mRNA和蛋白表达增高(P < 0.05),NF-κB mRNA和蛋白表达降低(P < 0.05),IκBα mRNA表达增高(P < 0.05),TNF-α、IL-6 mRNA表达降低(P < 0.05)。结论 EODF可促进脊髓损伤大鼠患侧前肢运动功能恢复,减轻损伤和炎症反应,可能与激活AHR/SOCS2/NF-κB信号通路有关。
中图分类号:
周小珏,冯婧,庞日朝,刘捷,张安仁. 隔日限食减轻脊髓损伤大鼠炎症反应的芳香烃受体/细胞因子信号传导抑制因子2/核转录因子-κB信号通路机制[J]. 《中国康复理论与实践》, 2022, 28(5): 544-551.
ZHOU Xiaojue,FENG Jing,PANG Rizhao,LIU Jie,ZHANG Anren. Every-other-day fasting attenuated inflammation in rats after spinal cord injury via the aryl hydrocarbon receptor/suppressor of cytokine signaling 2/nuclear transcription factor-κB signaling pathway[J]. 《Chinese Journal of Rehabilitation Theory and Practice》, 2022, 28(5): 544-551.
表2
各组mRNA水平比较 单位:2-ΔΔCT"
组别 | n | AHR | SOCS2 | NF-κB | IκBα | TNF-α | IL-6 |
---|---|---|---|---|---|---|---|
假手术组 | 4 | 1.231±0.237 | 1.265±0.463 | 1.000±0.302 | 1.951±0.488 | 0.865±0.103 | 0.475±0.031 |
模型组 | 4 | 0.576±0.207a | 0.502±0.015a | 1.887±0.464a | 1.054±0.424a | 1.575±0.120a | 0.853±0.136a |
EODF组 | 4 | 1.412±0.352b | 1.233±0.408b | 0.906±0.133b | 2.347±0.347b | 0.819±0.264b | 0.435±0.136b |
F值 | 10.380 | 5.857 | 10.840 | 9.771 | 22.760 | 16.770 | |
P值 | 0.005 | 0.024 | 0.004 | 0.006 | < 0.001 | < 0.001 |
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