柴胡皂苷a影响大鼠急性脊髓损伤后机体炎症水平表达的实验研究

Objective: To investigate the effect of saikosaponina on the expression of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in the early stage of acute spinal cord injury in rats. Methods: Thirty SD rats were randomly divided into sham operation group, simple injury group, saikosaponin a 5 mg / kg group, 10 mg / kg group, 20 mg / kg group, respectively. The acute spinal cord injury model was made by modified ^,Allen^,s heavy blow method. The rats in the injury group were injected with normal saline only, and the drug groups were intraperitoneally injected with the different dosages. All the animals were sacrificed at 24 h after the operation. The spinal cord and the vena cava sera of the injured segment were taken for 10 minutes and 2 minutes, respectively. The levels of TNF-αand IL-6 in the spinal cord tissue and serum were detected by enzyme-linked immunosorbent assay（ELISA）. Results: TNF-αand IL-6 in the spinal cord tissue and serum of the rats in the pure injury group were higher than those in the sham group (P <0.05). The levels of TNF-αand IL-6 in spinal cord tissue and serum of rats treated with saikosaponin a 5 mg / kg, 10 mg / kg and 20 mg / kg were lower than those of the injury group, and the difference was statistically significant (P < 0.05). The expressions of TNF-α and IL-6 in the spinal cord tissue of rats treated with 10 mg / group and 20 mg / kg group the difference were not statistically significant (P> 0.05). The levels of TNF-α and IL-6 in serum of rats treated with 10mg / kg and 20 mg/kg were lower than those of 5mg/kg group (P> 0.05). Conclusion: Saikosaponina could reduce the secondary immune inflammatory response by affecting the early expression of inflammatory factors to improve the body’s immune function in acute spinal cord injury. The10mg/kg group is superior to the other groups, and the drug may partially pass through the spinal blood barrier.     

IL-11调控 gp130/JAK2/STAT3信号通路促进Wistar大鼠雪旺细胞中PMP22的表达

目的:探索白介素-11对大鼠雪旺细胞分泌髓鞘蛋白的调节作用及相关机制。方法:取成年Wistar大鼠坐骨神经,分离纯化培养雪旺细胞。加入重组大鼠白介素-11,分别采用realtime RT-qPCR和Western boltting检测雪旺细胞髓鞘蛋白的表达情况,进一步检测IL-11调控髓鞘蛋白表达的相关通路的激活情况。结果:Realtime RT-qPCR和Western boltting结果均提示白介素-11可以显著提高雪旺细胞中周围神经髓鞘蛋白22的表达水平,而对雪旺细胞中髓鞘碱性蛋白和髓鞘蛋白零的表达水平则没无明显影响,该生理作用可被JAK特异性抑制剂AG490所抑制。在经过IL-11处理的SCs 细胞中可以观察到pJAK2（Y1007＋Y1008）和pSTAT3（Y705）含量明显高于对照组且伴随着SCs中gp130表达的上调。结论:白介素-11可通过调剂gp30/JAK2/STAT3信号通路以促进雪旺细胞中周围神经髓鞘蛋白22的表达。     

神经妥乐平药理作用及临床应用现状北大核心CSCD

神经妥乐平是将牛痘疫苗接种于家兔皮肤,从其免疫炎症组织中提取的去除蛋白的小分子生物活性混合物,临床上广泛应用于疼痛治疗及抗过敏治疗等方面,特别是对神经病理性疼痛具有独特的疗效。神经妥乐平的药理作用集中在调节免疫系统功能、调节疼痛信号传导、保护细胞及神经修复、抑制炎症反应等方面。其在临床上广泛用于骨科各种急慢性疼痛疾病、神经内科中脑缺血、神经痛及神经炎症疾病、皮肤科瘙痒症、过敏性疾病等。本文综述了神经妥乐平的相关研究,阐明其药理作用及目前的临床应用。