刘珊 敬秀平 谢安卫 尹诗



摘要 目的:观察天王补心丹对失眠模型鼠行为学的影响,探析其对TLR4通路的影响。方法:利用氯苯丙氨酸腹腔注射制备失眠模型,将成模45只大鼠数字随机分为模型组、天王补心丹低剂量组(7 g/kg)及天王补心丹高剂量组(28 g/kg),另设空白组15只。连续中药干预7 d后比较各组大鼠旷场行为学、睡眠时间、中缝背核Toll样受体4(TLR4)、髓样分化蛋白88(MyD88)以及外周血清核因子-κB、诱导干扰素β的TRIF变化。结果:天王补心丹可明显减少失眠模型大鼠中央格停留时间、修饰次数,延长睡眠时间缩短睡眠潜伏期,差异有统计学意义(P<0.05),外周血核因子-κB、TRIF、肿瘤坏死因子-α(TNF-α)、IL-1以及中缝背核TLR4、MyD88水平均降低,差异有统计学意义(P<0.05)。结论:天王补心丹可改善失眠,其作用机制可能与通过TLR4通路调节机体免疫有关。
关键词 失眠;模型大鼠;天王补心丹;行为学;中缝背核Toll样受体4信号通路;关键因子;肿瘤坏死因子-α;白细胞介素-1
Study on the Therapeutic Effect and Partial Mechanism of Tianwang Buxin Pill on Insomnia Model Rats
LIU Shan,JING Xiuping,XIE Anwei,YIN Shi
(General Department,People′s Hospital of Guang′an City of Sichuan Province,Guang′an 638500,China)
Abstract Objective:To observe the effect of Tianwang Buxin Pill on the behavior of insomnia model rats and to explore its effect on TLR4 pathway.Methods:The insomnia model was established by intraperitoneal injection of chlorophenylalanine.A total of 45 rats were randomly divided into a model group,a low dose Tianwang Buxin Pill group (7 g/kg) and a high dose Tianwang Buxin Pill group (28 g/kg).Another 15 rats in the blank group were established.After continuous intervention with Chinese medicine for 7 days,the changes of open field behavior,sleep time,Toll-like receptor 4 (TLR4),myeloid differentiation protein 88 (MyD88) and peripheral serum nuclear factor-kappa B (NF-kappa B),TIR base domain linker molecule for inducing interferon β (TRIF) were compared in each group.Results:Tianwang Buxin Pill could significantly reduce the central lattice residence time and modification times of insomnia model rats,and prolong the sleep time and shorten the sleep latency (P<0.05).The levels of NF-κ B,TRIF,TNF-α,IL-1 in peripheral blood and TLR4 and MyD88 in dorsal raphe nucleus decreased (P<0.05).Conclusion:Tianwang Buxin Pill can improve insomnia,and its mechanism may be related to the regulation of immunity through TLR4 pathway.
Keywords Insomnia; Model rats; Tianwang Buxin Pill; Behavior; TLR4 signaling pathway; Key factors; TNF-α; IL-1
中圖分类号:R289.4文献标识码:Adoi:10.3969/j.issn.1673-7202.2021.05.017
失眠是临床常见的睡眠障碍性疾病,流行病学调查显示我国普通人群中约45.4%存在失眠问题[1],主要表现在难以入眠、醒后复睡困难或醒后精力体力无法恢复,给人们的工作、生活带来严重的困扰。目前治疗失眠的西药多以苯二氮艹卓类、抗抑郁药为主,虽可在一定程度上改善症状,但反弹、成瘾及戒断等严重不良反应影响了治疗依从性。失眠属于中医学“不寐”的范畴,认为阳盛阴衰,阴阳失交是其主要病机,天王补心丹源自《摄生秘剖》,近年来大量临床资料[2-4]均证实天王补心丹可有效治疗不寐,但其作用机制目前尚无定论。
有文献显示长期失眠机体免疫功能受损,有研究人员通过基础实验证实失眠大鼠TLR4信号通路被过度激活[5],TLR4表达适量时可调节机体的天然免疫系统,如果过度表达时可激活下游核因子-κB信号通路,最终引起细胞炎症反应,从而干扰机体免疫系统。……