目的基于UPLC指纹图谱、质量标志物"五原则"和网络药理学,研究道地产区不同产地广藿香药材,预测广藿香治疗病毒感染和胃溃疡的潜在质量标志物。方法建立广藿香UPLC指纹图谱,利用SIMCA-P14.1分析软件对14批药材共有峰进行聚类...目的基于UPLC指纹图谱、质量标志物"五原则"和网络药理学,研究道地产区不同产地广藿香药材,预测广藿香治疗病毒感染和胃溃疡的潜在质量标志物。方法建立广藿香UPLC指纹图谱,利用SIMCA-P14.1分析软件对14批药材共有峰进行聚类分析,利用偏最小二乘法-判别分析(partial least squares-discrimination analysis,PLS-DA)筛选共有峰组间主要差异成分。基于质量标志物"五原则",对差异成分进行初步分析,进一步采用网络药理学,通过相应数据库检索差异成分、病毒感染和胃溃疡疾病靶点。采用David 6.8数据库对共有靶点进行基因本体(gene ontology,GO)功能富集分析和京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)通路富集分析,同时构建"成分-靶点-疾病-通路"网络,分析广藿香主要活性成分和关键靶点。结果UPLC指纹图谱研究结合聚类分析结果显示,广东省2个产地广藿香药材存在一定差异。经PLS-DA分析,筛选出4个差异成分,依次为毛蕊花糖苷、广藿香酮、紫葳新苷和列当苷。根据质量标志物"五原则"结合网络药理学分析结果,预测广藿香主要活性成分为广藿香酮和毛蕊花糖苷,两者主要通过作用于ERBB2、EGFR、TLR4、AKT1、TNF靶点,调控TLR、ErbB、MAPK等信号通路,发挥抗病毒、调节肠胃功能等作用。结论建立的UPLC指纹图谱方法简便,筛选的2个活性成分毛蕊花糖苷和广藿香酮可作为广藿香潜在的质量标志物,为广藿香药材质量的控制和药效相关机制的研究提供参考。展开更多
Background Our pervious antibacterial studies on several traditional Chinese medicines have found that Patchouli oil from Pogostemon cablin had significant antibacterial activity against methicillin-resistant Staphylo...Background Our pervious antibacterial studies on several traditional Chinese medicines have found that Patchouli oil from Pogostemon cablin had significant antibacterial activity against methicillin-resistant Staphylococcus aureus （MRSA）,which has spread worldwide and infected innumerable people.In order to find the more active natural substances in Patchouli oil,one of the major components,Pogostone,was isolated and its antibacterial activity was evaluated in vitro and in vivo in this study.Methods In vitro test,Pogostone was screened for antimicrobial properties against 83 bacteria comprising 35 gram positive and 48 gram negative bacteria strains via the agar double dilution method.In vivo test,specific pathogen free （SPF） strain of both male and female white Kunming mice,weighing 18-22 g,were used to test the protective ability of Pogostone after being injected with the median lethal doses （MLDs） of the tested strains.Results In vitro test,Pogostone could inhibit both gram negative bacteria （0.098-1 600 μg/ml） and gram positive bacteria（0.098-800 μg/ml）.For Corynebacterium xerosis and some Chryseobacterium indologenes,the minimum inhibitory concentration （MIC） values of Pogostone were extremely low （＜0.098 μg/ml）.It was significant that Pogostone was also active against some drug-resistant bacteria like MRSA.Furthermore,Pogostone showed antibacterial activity in vivo against Escherichia coli （E.coli） and MRSA via intraperitoneal injection.Ninety percent of the mice infected with E.coil could be protected at the concentrations of 50 and 100 mg/kg,and 60％ of the mice at 25 mg/kg,while the rate of protection for the mice infected with MRSA was 60％ and 50％ at doses of 100 and 50 mg/kg,respectively.Conclusion Pogostone could be developed as a potential antibacterial agent for clinical therapy.展开更多
文摘目的基于UPLC指纹图谱、质量标志物"五原则"和网络药理学,研究道地产区不同产地广藿香药材,预测广藿香治疗病毒感染和胃溃疡的潜在质量标志物。方法建立广藿香UPLC指纹图谱,利用SIMCA-P14.1分析软件对14批药材共有峰进行聚类分析,利用偏最小二乘法-判别分析(partial least squares-discrimination analysis,PLS-DA)筛选共有峰组间主要差异成分。基于质量标志物"五原则",对差异成分进行初步分析,进一步采用网络药理学,通过相应数据库检索差异成分、病毒感染和胃溃疡疾病靶点。采用David 6.8数据库对共有靶点进行基因本体(gene ontology,GO)功能富集分析和京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)通路富集分析,同时构建"成分-靶点-疾病-通路"网络,分析广藿香主要活性成分和关键靶点。结果UPLC指纹图谱研究结合聚类分析结果显示,广东省2个产地广藿香药材存在一定差异。经PLS-DA分析,筛选出4个差异成分,依次为毛蕊花糖苷、广藿香酮、紫葳新苷和列当苷。根据质量标志物"五原则"结合网络药理学分析结果,预测广藿香主要活性成分为广藿香酮和毛蕊花糖苷,两者主要通过作用于ERBB2、EGFR、TLR4、AKT1、TNF靶点,调控TLR、ErbB、MAPK等信号通路,发挥抗病毒、调节肠胃功能等作用。结论建立的UPLC指纹图谱方法简便,筛选的2个活性成分毛蕊花糖苷和广藿香酮可作为广藿香潜在的质量标志物,为广藿香药材质量的控制和药效相关机制的研究提供参考。
文摘Background Our pervious antibacterial studies on several traditional Chinese medicines have found that Patchouli oil from Pogostemon cablin had significant antibacterial activity against methicillin-resistant Staphylococcus aureus （MRSA）,which has spread worldwide and infected innumerable people.In order to find the more active natural substances in Patchouli oil,one of the major components,Pogostone,was isolated and its antibacterial activity was evaluated in vitro and in vivo in this study.Methods In vitro test,Pogostone was screened for antimicrobial properties against 83 bacteria comprising 35 gram positive and 48 gram negative bacteria strains via the agar double dilution method.In vivo test,specific pathogen free （SPF） strain of both male and female white Kunming mice,weighing 18-22 g,were used to test the protective ability of Pogostone after being injected with the median lethal doses （MLDs） of the tested strains.Results In vitro test,Pogostone could inhibit both gram negative bacteria （0.098-1 600 μg/ml） and gram positive bacteria（0.098-800 μg/ml）.For Corynebacterium xerosis and some Chryseobacterium indologenes,the minimum inhibitory concentration （MIC） values of Pogostone were extremely low （＜0.098 μg/ml）.It was significant that Pogostone was also active against some drug-resistant bacteria like MRSA.Furthermore,Pogostone showed antibacterial activity in vivo against Escherichia coli （E.coli） and MRSA via intraperitoneal injection.Ninety percent of the mice infected with E.coil could be protected at the concentrations of 50 and 100 mg/kg,and 60％ of the mice at 25 mg/kg,while the rate of protection for the mice infected with MRSA was 60％ and 50％ at doses of 100 and 50 mg/kg,respectively.Conclusion Pogostone could be developed as a potential antibacterial agent for clinical therapy.
