巴戟天多糖通过上调沉默信息调节因子1抑制炎性牙周膜细胞NOD样受体热蛋白结构域相关蛋白3的表达及活性

目的 探讨炎性微环境下巴戟天多糖(MOP)对牙周膜细胞沉默信息调节因子1(SIRT1)及NOD样受体热蛋白结构域相关蛋白3(NLRP3)表达的影响。方法 将30只大鼠随机分为对照组(n=6)和模型组(n=24),模型组采用正畸丝结扎法建立牙周炎模型,3周后每组各处死6只大鼠,Micro-CT检测确认建模成功。剩余模型组大鼠随机分为牙周炎自然恢复组、生理盐水(NS)组和MOP组。MOP组于大鼠左上颌第一磨牙腭侧注射MOP [200 mg/(kg·3d),50μL,持续4周],NS组注射等体积NS,牙周炎自然恢复组不做任何处理。取大鼠左上颌骨组织,采用苏木精-伊红(HE)染色观察牙周膜细胞病理改变,免疫组织化学检测SIRT1、NLRP3表达量。体外培养人牙周膜成纤维细胞(hPDLFs),CCK-8检测MOP对细胞活性的影响。将第4代细胞分为对照组、炎症组(10μg/mL脂多糖)及实验组(5μmol/L MOP,5μmol/L MOP+10μg/mL脂多糖)。利用实时定量聚合酶链反应(qRT-PCR)及Western blot检测SIRT1和NLRP3表达变化,免疫沉淀及酶联免疫法(ELISA)分别检测NLRP3乙酰化及白细胞介素(IL)-1β、IL-18含量。采用Prism 9.0软件对数据进行统计学分析。结果在体内实验中,MOP组较牙周炎自然恢复组和NS组NLRP3表达下降,SIRT1表达升高(P<0.05),炎细胞浸润减少。在体外实验中,与对照组相比,炎症组NLRP3 mRNA和蛋白表达量均增高(P<0.05),SIRT1表达降低(P<0.01);MOP能上调炎症细胞SIRT1表达(P<0.05),降低NLRP3表达及其乙酰化水平(P<0.05),减少上清液中IL-1β、IL-18含量(P<0.01)。结论 炎性牙周膜细胞SIRT1表达降低,NLRP3表达升高;MOP干预能促进SIRT1表达,导致NLRP3表达受抑制,同时通过去乙酰化作用使NLRP3乙酰化水平下降,从而NLRP3活性降低,由此发挥抑制炎症作用。

Prediction of potential targets and molecular mechanisms of Tripterygium hypoglaucum for oral lichen planus based on network pharmacology and molecular docking

Objective:To explore the potential targets and molecular mechanisms of tripterygium hypoglaucum for oral lichen planus(OLP)by applying network pharmacology and molecular docking technology.Methods:The active ingredients and targets of tripterygium hypoglaucum were screened.OLP-related targets were predicted.The Protein-Protein Interaction(PPI)network was constructed for the intersection targets of tripterygium hypoglaucum and OLP.The“OLP-target-molecule-Tripterygium hypoglaucum”network was constructed and visualized.The intersection genes were screened for gene ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway enrichment analyses.Molecular docking analysis and visualization were performed.Results:15 active ingredients and 78 targets of tripterygium hypoglaucum were obtained.9109 OLP-related targets were screened,and 54 intersection genes of tripterygium hypoglaucum with OLP were obtained.The top 10 key targets were screened from the constructed PPI network.The top 10 active ingredients of tripterygium hypoglaucum were screened from the constructed“OLP-targets of actionactive ingredients-tripterygium hypoglaucum”network.The GO and KEGG analyses of the 54 intersection targets indicated that tripterygium hypoglaucum may play a therapeutic role by regulating one carbon pool by folate,pathways in cancer,et al.Molecular docking analysis showed that dihydrofolate reductase(DHFR),phosphoribosylglycinamide formyltransferase(GART),estrogen receptor 1(ESR1),et al are the key targets for the treatment of OLP in tripterygium hypoglaucum.Conclusion:The potential key targets and molecular mechanisms of tripterygium hypoglaucum in treating OLP provide a theoretical basis for new drug development and clinical applications.

小郁子油穴位贴敷治疗肝胃气滞型慢性浅表性胃炎的临床观察

目的:观察小郁子油子午流注穴位贴敷治疗肝胃气滞型慢性浅表性胃炎的临床疗效。方法:将收治的86例肝胃气滞型慢性浅表性胃炎患者随机分为对照组42例和观察组44例。对照组给予西药常规治疗,观察组在对照组基础上予小郁子油子午流注穴位贴敷治疗,疗程1周,比较两组患者治疗前后症状积分、临床疗效及安全性。结果:治疗后两组患者胃脘疼痛、胃脘胀满、胸胁胀痛、嗳气、嘈杂反酸等症状积分较治疗前明显下降(P<0.01),与对照组治疗后比较,观察组患者胃脘疼痛、胃脘胀满两症状积分下降更加明显(P<0.01)。观察组患者的总有效率(95.45%)高于对照组患者的总有效率(78.57%),差异有统计学意义(P<0.05)。两组患者均未发生严重的不良反应,观察组有2例患者出现脐周轻微瘙痒,症状可自行缓解。结论:在常规治疗基础上,给予小郁子油子午流注穴位贴敷治疗可以有效缓解肝胃气滞型慢性浅表性胃炎患者的临床症状,提高临床疗效,安全方便。