珍宝丸介导NF-κB/p65通路对脊髓损伤大鼠的神经保护作用  

Neuroprotective effect of Zhenbao pill mediated NF-κB/p65 pathway on rats with spinal cord injury

作　　者：王兴[1] 李斯琴[2] 张葆鑫 阿日奔吉日嘎拉 WANG Xing;LI Si-qin;ZHANG Bao-xin;Aribenjirigala(Department of Spine,Bayannur City Hospital,Bayannur Inner Mongolia 015000,China;Department of Neurosurgery,Bayannur City Hospital,Bayannur Inner Mongolia 015000,China;Department of Traumatic Orthopedics,the Second Affiliated Hospital of Inner Mongolia Medical University,Hohhot Inner Mongolia 010050,China)

机构地区：[1]巴彦淖尔市医院脊柱科,内蒙古巴彦淖尔015000 [2]巴彦淖尔市医院神经外科,内蒙古巴彦淖尔015000 [3]内蒙古医科大学第二附属医院创伤骨科,内蒙古呼和浩特010050

出　　处：《局解手术学杂志》2024年第10期887-891,共5页Journal of Regional Anatomy and Operative Surgery

基　　金：内蒙古自治区自然科学基金(2020MS08164);内蒙古医科大学科研项目(YKD2021LH095);内蒙古自治区卫生健康委员会联合项目(202202403);巴彦淖尔市科技局科研项目(K202139)。

摘　　要：目的探讨珍宝丸对脊髓损伤大鼠的神经保护作用及相关机制。方法60只SD大鼠随机均分为对照组、模型组和珍宝丸组,对照组大鼠仅暴露脊髓,模型组和珍宝丸组大鼠均构建脊髓损伤模型。造模成功后,珍宝丸组大鼠给予口服0.6 g/kg珍宝丸干预治疗,间隔24 h给药1次,持续给药28 d,对照组和模型组大鼠则给予相同剂量的生理盐水灌胃。采用巴索·比蒂·布雷斯纳汉(BBB)评分法评估干预治疗前和治疗后4周各组大鼠运动行为学变化;实验结束取大鼠脊髓组织标本,通过HE染色和TUNEL染色法观察评估大鼠脊髓组织病理学变化及神经细胞凋亡情况;通过qRT-PCR法检测炎症因子TNF-α、IL-6和IL-10的表达情况;采用Western blot法检测核因子κB(NF-κB)/p65通路相关蛋白的表达情况。结果干预治疗后4周,模型组大鼠BBB评分低于对照组,珍宝丸组大鼠BBB评分高于模型组,差异均有统计学意义(P<0.05)。对照组大鼠脊髓组织结构、形态正常;模型组大鼠脊髓组织结构紊乱,有明显出血、坏死、水肿,大量炎性细胞浸润;珍宝丸组大鼠脊髓组织病变程度较模型组明显减轻。珍宝丸组脊髓组织细胞凋亡数较模型组减少,差异有统计学意义(P<0.05)。与对照组相比,模型组脊髓组织中TNF-α和IL-6表达升高,IL-10表达下降,差异均有统计学意义(P<0.05);与模型组相比,珍宝丸组脊髓组织中TNF-α和IL-6表达显著降低,IL-10表达显著升高,差异均有统计学意义(P<0.05)。模型组大鼠脊髓组织中NF-κB/p65和p-NF-κB/p65蛋白表达均较对照组上调,差异有统计学意义(P<0.05);珍宝丸组大鼠脊髓组织中NF-κB/p65和p-NF-κB/p65蛋白表达均较模型组下调,差异有统计学意义(P<0.05)。结论珍宝丸治疗能够有效改善脊髓损伤大鼠行为学症状,减轻其病理变化,具有神经保护作用,其作用机制可能与阻断NF-κB/p65通路、抑制炎症因子表达有关。Objective To explore the neuroprotective effect and related mechanism of Zhenbao pill on rats with spinal cord injury.Methods A total of 60 SD rats were randomly divided into the control group,the model group and the Zhenbao pill group.Rats in the control group only exposed the spinal cord,and rats in the model group and the Zhenbao pill group established spinal cord injury models.After the model was successfully established,rats in the Zhenbao Pill group was given 0.6 g/kg Zhenbao pill orally once every 24 hours for 28 days,and rats in the control group and the model group were given the same dose of normal saline by gavage.Basso,Beattie,Bresnahan(BBB)score was used to evaluate the changes in motor behavior of rats in each group before and 4 weeks after intervention treatment.At the end of the experiment,the spinal cord tissue samples were collected,and the histopathological changes and apoptosis of nerve cells were observed and evaluated by HE staining and TUNEL staining.The expression of inflammatory factors TNF-α,IL-6 and IL-10 was detected by qRT-PCR.The expression of nuclear factorκB(NF-κB)/p65 pathway related proteins was detected by Western blot.Results After 4 weeks of intervention treatment,the BBB score of rats in the model group was lower than that in the control group,and the BBB score of rats in the Zhenbao pill group was higher than that in the model group,and the differences were statistically significant(P<0.05).The structure and morphology of spinal cord tissue of rats in the control group were normal;the spinal cord tissue structure of rats in the model group was disordered,with obvious bleeding,necrosis and edema,and a large number of inflammatory cells infiltrated;the degree of lesion of spinal cord tissue of rats in the Zhenbao pill group was significantly reduced than that in the model group.The number of apoptosis of spinal cord tissue in the Zhenbao pill group was decreased compared with that in the model group,and the difference was statistically significant(P<0.05).Compared with the

关 键 词：珍宝丸 脊髓损伤 神经损伤 NF-κB/p65通路 

分 类 号：R285.5[医药卫生—中药学]