天麻钩藤饮加减对脑出血小鼠的神经保护作用及其对HMGB1/TLR4信号通路的影响
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1.湖南中医药大学;2.湖南省中西医结合医院(湖南省中医药研究院附属医院);3.湖南中医药大学第一附属医院

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湖南省自然科学基金(2023JJ60321);湖南省教育厅科学研究项目(20A381)。


Neuroprotective effect of Tianma-Gouteng drink on mice with intracerebral hemorrhage and its effect on HMGB1/TLR4 pathway
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1.Hunan University of Chinese Medicine;2.Hunan Provincial Hospital of Integrated Traditional Chinese and Western Medicine (The Affiliated Hospital of Hunan Academy of Traditional Chinese Medicine);3.The first Hospital of Hunan University of Chinese Medicine;4.Hunan Provincial Hospital of Integrated Traditiona

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    摘要:

    目的 探讨天麻钩藤饮加减在小鼠脑出血(ICH)急性期中对神经炎症和细胞凋亡的影响及其与高迁移率族蛋白B1(HMGB1)/Toll样受体4(TLR4)信号通路的关联。 方法 32只雄性小鼠随机分为4组(n=8):Sham组(假手术组)、ICH组(脑出血模型组)、IT组(脑出血模型给与天麻钩藤饮干预)、ITG组(脑出血模型给予天麻钩藤饮联合HMGB1靶点抑制剂甘草酸干预)。天麻钩藤饮质量由质谱分析控制,同时结果通过网络药理学进行靶点和通路分析。脑内注射胶原酶 VII建立ICH小鼠模型。通过神经功能评分、苏木精和伊红(HE)染色分析天麻钩藤饮对小鼠脑出血后神经功能缺损和脑组织病理损伤的影响;通过酶联免疫吸附测定法(ELISA)测定测定肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)、白细胞介素1β(IL-1β)水平;通过蛋白质印迹法(Western blotting)分析BCL2-Associated X的蛋白质(bax)、B淋巴细胞瘤-2基因( bcl2)、HMGB1、TLR4、髓样分化因子88(Myd88)、β干扰素TIR结构域衔接蛋白(TRIF)、核因子κB(NF-κB)的表达水平。 结果 与Sham组相比,ICH组的神经功能缺损和脑组织病理损伤加剧,炎症表达和细胞凋亡水平上升,HMGB1、TLR4、Myd88、TRIF、NF-κB等通路相关蛋白表达升高;与ICH组相比,IT组和ITG组的神经功能缺损和脑组织病理损伤得到缓解,炎症表达和细胞凋亡水平下降,HMGB1、TLR4、Myd88、TRIF、NF-κB等通路相关蛋白表达在不同程度上降低。此外天麻钩藤饮通过质谱分析和网络药理学分析,得到509种化合物,其中75个成分通过类药性分析并通过靶点预测得到195个可能具备干预效果的分子靶点。GO(gene ontology)功能富集分析及KEGG(kyoto encyclopedia of genes and genomes)通路富集分析则进一步验证了相关分子靶点与炎症、HMGB1/TLR4通路的相关性。 结论 天麻钩藤饮加减治疗缓解了ICH小鼠的神经功能缺损和脑组织病理损伤情况,并降低了ICH后神经炎症表达和细胞凋亡水平,可能分子机制是抑制HMGB1/TLR4信号通路的表达。

    Abstract:

    Objective To investigate the effects of Tianma-Gouteng decoction on neuroinflammation and apoptosis in the acute phase of ICH in mice and its association with the HMGB1/TLR4 signalling pathway. Methods Mice were randomly divided into 4 groups (n=8): the sham group, the model group, the drug group, and the drug combined with glycyrrhizic acid group. The drug quality was controlled by mass spectrometry analysis, while the results were analysed by network pharmacology for targets and pathways. The model was established by intracerebral injection of collagenase VII. The effects of drugs on neurological deficits and brain histopathological damage after ICH were analysed by mNss and HE. TNF-α, IL-6, IL-1β were determined by ELISA assay; the expression levels of bax, bcl2, HMGB1, TLR4, Myd88, TRIF, NF-κB were analysed by WB. Results Compared with the sham group, the neurological deficits and histopathological brain damage were exacerbated in the ICH group, with increased levels of inflammatory expression and apoptosis, and increased expression of pathway-associated proteins. Compared with the ICH group, the neurological deficits and brain histopathological damage in the IT and ITG groups were ameliorated, the levels of inflammatory expression and apoptosis were decreased, and the expression of pathway-associated proteins was reduced to varying degrees.In addition, 509 compounds were obtained by mass spectrometry and network pharmacology, of which 75 components were analysed by pharmacophore analysis and 195 molecules were identified by target prediction for possible interventional effects.Gene Ontology Enrichment Analysis and Kyoto Encyclopedia of Genes and Genomes further verified the relevance of the relevant molecular targets to the inflammatory pathway. Gene Ontology Enrichment Analysis and Kyoto Encyclopedia of Genes and Genomes Enrichment Analysis further verified the correlation between the relevant molecular targets and inflammation, HMGB1/TLR4 pathway. Conclusion Tianma-Gouteng decoction alleviated neurological deficits and brain histopathological damage, and reduced neuroinflammatory expression and apoptosis levels after ICH, with the possible molecular mechanism being inhibition of HMGB1/TLR4 pathway expressio.

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  • 收稿日期:2024-11-18
  • 最后修改日期:2024-12-31
  • 录用日期:2025-01-06
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