The present study established a rat model of focal brain ischemia by occlusion of the middle cerebral artery covered with FeCl3, and investigated the protective effect of 3＇-methoxy-puerarin. Hippocampal and cortical...The present study established a rat model of focal brain ischemia by occlusion of the middle cerebral artery covered with FeCl3, and investigated the protective effect of 3＇-methoxy-puerarin. Hippocampal and cortical c-fos gene expression was determined using in situ hybridization. Results showed that 3＇-methoxy-puerarin reduced neurological deficit scores, cerebral infarcted zone and water content of brain tissues, dramatically increased the activity of catalase and glutathione peroxidase in the ischemia zone of the hippocampus, increased the activity of catalase in the cortex, decreased lipid peroxide and lactic acid contents in the hippocampus and cerebral cortex, and down-regulated c-fos gene expression in brain ischemic rats. Results demonstrated that 3＇-methoxy-puerarin exhibited cerebroprotective effects against focal brain ischemia, which involved c-fos gene expression.展开更多
NLRP3 inflammasome-mediated cell pyroptosis aggravates the development of cerebral ischemia/reperfusion(I/R)injury,and the aim of this study is to investigate the potential utilization of the Chinese medicine,Puerarin...NLRP3 inflammasome-mediated cell pyroptosis aggravates the development of cerebral ischemia/reperfusion(I/R)injury,and the aim of this study is to investigate the potential utilization of the Chinese medicine,Puerarin,in treating this disease.Through conducting in vitro and in vivo experiments,the present study illustrated that Puerarin regulated LncRNA double homeobox A pseudogene 8(DUXAP8)/miR-223-3p axis to inactivate NLRP3-mediated pyroptotic cell death,resulting in the attenuation of I/R injury.Specifically,the cerebral I/R injury in rat models and hypoxia/reoxygenation(H/R)in primary hippocampus neuron(PHN)cells were inducted,which were subsequently exposed to Puerarin treatment.As expected,we validated that Puerarin suppressed cell pyroptosis and rescued cell viability in I/R rat hippocampus tissues and H/R PHN cells.Next,through bioinformatics analysis,we noticed that miR-223-3p targeted both LncRNA DUXAP8 and NLRP3 mRNA,and both LncRNA DUXAP8 ablation and miR-223-3p overexpression inactivate NLRP3-mediated cell pyroptosis to rescue cell viability in H/R PHN cells.Interestingly,we evidenced that Puerarin restrained LncRNA DUXAP8 expressions,but upregulated miR-223-3p in I/R rat tissues and H/R PHN cells,and the protective effects of Puerarin on H/R PHN cells were abrogated by overexpressing LncRNA DUXAP8 and silencing miR-223-3p.Collectively,we concluded that Puerarin regulated LncRNA DUXAP8/miR-223-3p/NLRP3 signaling cascade to attenuate I/R injury.展开更多
A new compound, {[Sm^2L3（H2O）4]·（4,4＇-bpy）·3H2O}n（1, H2 L = 5-（3-pyridyl methoxy） isophthalic acid, 4,4＇-bpy = 4,4A-dipyridyl）, has been hydrothermally synthesized and characterized by single-cryst...A new compound, {[Sm^2L3（H2O）4]·（4,4＇-bpy）·3H2O}n（1, H2 L = 5-（3-pyridyl methoxy） isophthalic acid, 4,4＇-bpy = 4,4A-dipyridyl）, has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 11.266（2）, b = 15.530（3）, c = 16.711（3） A, α = 112.803（3）, β = 90.526（1）, γ = 94.006（3）°, V = 2686.6（9） A3, Z = 2, Dc = 1.727 g/cm^3, μ = 2.251 mm-1, F（000） = 1392, S = 0.999, the final R = 0.0296 and wR = 0.1058. In the title compound, two crystallographically independent Sm^3＋ cations are bridged by the carboxyl group of L2- ligands to form two different {Sm^2} binuclear subunits which are further connected by two distinct L2- ligands to shape a 1D chain, and such 1D chains are linked up to generate a 2D coordination polymer by another crystallographically unique L2- ligand. The thermogravimetric analysis and luminescent property of the title compound were also investigated.展开更多
目的 建立经典名方竹茹汤颗粒(Zhuru Decoction Granules,ZDG)特征图谱及一测多评(quantitative analysis multicomponents by single marker,QAMS)法测定其主要成分,优化薄层色谱条件,建立同时鉴别葛根素和甘草苷的方法。方法优化并确...目的 建立经典名方竹茹汤颗粒(Zhuru Decoction Granules,ZDG)特征图谱及一测多评(quantitative analysis multicomponents by single marker,QAMS)法测定其主要成分,优化薄层色谱条件,建立同时鉴别葛根素和甘草苷的方法。方法优化并确定HPLC最佳色谱条件并建立特征图谱,以葛根素作为参照物,建立葛根素、3′-羟基葛根素、3′-甲氧基葛根素、葛根素芹菜糖苷、大豆苷、甘草苷、甘草酸的QAMS法,建立主要药效成分葛根素及甘草苷同时鉴别的薄层条件。结果 得到15批样品特征图谱与其对照图谱的相似度均大于0.95;15批制剂运用QAMS法和外标法得到的各成分含量无显著性差异,7种成分相对误差均低于5%;通过稳定性考察证明薄层检测条件稳定可行。结论 该方法科学可行,稳定可控,有助于经典名方ZDG质量控制方法的完善和提高,为经典名方的质量控制评价提供参考。展开更多
目的 采用HPLC法多指标成分定量测定联合正交偏最小二乘-判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)及熵权优劣解距离法(entropy weight technique for order preference by similarity to ideal solut...目的 采用HPLC法多指标成分定量测定联合正交偏最小二乘-判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)及熵权优劣解距离法(entropy weight technique for order preference by similarity to ideal solution,EWTOPSIS)对不同厂家降糖通脉片(Jiangtang Tongmai Tablets,JTT)质量进行综合评价,为科学评价JTT质量提供参考。方法 收集3个厂家15批JTT样品,采用HPLC法同时测定JTT中3’-羟基葛根素、葛根素、3’-甲氧基葛根素、太子参环肽B、哈巴苷、哈巴俄苷、二氢丹参酮Ⅰ、隐丹参酮、丹参酮Ⅰ和丹参酮Ⅱ_(A)的含量,运用SPSS26.0和SIMCA14.1统计软件进行层次聚类分析(hierarchical cluster analysis,HCA)、主成分分析(principal component analysis,PCA)和OPLS-DA,建立JTT HCA、PCA和OPLS-DA模型,获取得分图和载荷图及变量重要性投影(variable importance in projection,VIP)值,筛选并分析影响JTT质量差异的主要物质基础,并运用EW-TOPSIS法对不同厂家JTT进行质量优劣性评价。结果 3’-羟基葛根素、葛根素、3’-甲氧基葛根素、太子参环肽B、哈巴苷、哈巴俄苷、二氢丹参酮Ⅰ、隐丹参酮、丹参酮Ⅰ和丹参酮Ⅱ_(A)分别在5.97~298.50、14.45~722.50、4.89~244.50、0.58~29.00、6.55~327.50、2.46~123.00、1.39~69.50、3.56~178.00、4.25~212.50和7.97~398.50μg/mL(r≥0.999 1)线性关系良好,平均加样回收率(n=9)分别为99.53%、100.10%、98.95%、96.97%、100.03%、98.84%、97.06%、98.37%、99.31%、99.18%,RSD分别为0.71%、0.63%、0.98%、1.47%、0.79%、1.30%、1.26%、1.18%、1.39%、1.55%。化学计量学分析结果显示15批JTT样品聚为3类,同一厂家JTT样品聚为一类,不同生产厂家样品质量存在一定差异;葛根素、丹参酮Ⅰ、哈巴苷和丹参酮Ⅱ_(A)是影响JTT样品质量的主要潜在标志物;EW-TOPSIS法可用于不同厂家JTT质量优劣的评价。结论 建立的HPLC多指标成分定量测定方法操作便捷、结果准确,结合HCA、PCA、OPLS-DA及EW-TOPSIS法可用于JTT质量的综合评价。展开更多
文摘The present study established a rat model of focal brain ischemia by occlusion of the middle cerebral artery covered with FeCl3, and investigated the protective effect of 3＇-methoxy-puerarin. Hippocampal and cortical c-fos gene expression was determined using in situ hybridization. Results showed that 3＇-methoxy-puerarin reduced neurological deficit scores, cerebral infarcted zone and water content of brain tissues, dramatically increased the activity of catalase and glutathione peroxidase in the ischemia zone of the hippocampus, increased the activity of catalase in the cortex, decreased lipid peroxide and lactic acid contents in the hippocampus and cerebral cortex, and down-regulated c-fos gene expression in brain ischemic rats. Results demonstrated that 3＇-methoxy-puerarin exhibited cerebroprotective effects against focal brain ischemia, which involved c-fos gene expression.
基金supported by the Project of Scientific Research Fund of Traditional Chinese Medicine of Zhejiang Province(No.2020ZB230).
文摘NLRP3 inflammasome-mediated cell pyroptosis aggravates the development of cerebral ischemia/reperfusion(I/R)injury,and the aim of this study is to investigate the potential utilization of the Chinese medicine,Puerarin,in treating this disease.Through conducting in vitro and in vivo experiments,the present study illustrated that Puerarin regulated LncRNA double homeobox A pseudogene 8(DUXAP8)/miR-223-3p axis to inactivate NLRP3-mediated pyroptotic cell death,resulting in the attenuation of I/R injury.Specifically,the cerebral I/R injury in rat models and hypoxia/reoxygenation(H/R)in primary hippocampus neuron(PHN)cells were inducted,which were subsequently exposed to Puerarin treatment.As expected,we validated that Puerarin suppressed cell pyroptosis and rescued cell viability in I/R rat hippocampus tissues and H/R PHN cells.Next,through bioinformatics analysis,we noticed that miR-223-3p targeted both LncRNA DUXAP8 and NLRP3 mRNA,and both LncRNA DUXAP8 ablation and miR-223-3p overexpression inactivate NLRP3-mediated cell pyroptosis to rescue cell viability in H/R PHN cells.Interestingly,we evidenced that Puerarin restrained LncRNA DUXAP8 expressions,but upregulated miR-223-3p in I/R rat tissues and H/R PHN cells,and the protective effects of Puerarin on H/R PHN cells were abrogated by overexpressing LncRNA DUXAP8 and silencing miR-223-3p.Collectively,we concluded that Puerarin regulated LncRNA DUXAP8/miR-223-3p/NLRP3 signaling cascade to attenuate I/R injury.
基金Supported by the National Natural Science Foundation of China(Nos.21171037&21103021)the Natural Science Foundation of Fujian Province(No.2008I0013&No.2012J0142)
文摘A new compound, {[Sm^2L3（H2O）4]·（4,4＇-bpy）·3H2O}n（1, H2 L = 5-（3-pyridyl methoxy） isophthalic acid, 4,4＇-bpy = 4,4A-dipyridyl）, has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 11.266（2）, b = 15.530（3）, c = 16.711（3） A, α = 112.803（3）, β = 90.526（1）, γ = 94.006（3）°, V = 2686.6（9） A3, Z = 2, Dc = 1.727 g/cm^3, μ = 2.251 mm-1, F（000） = 1392, S = 0.999, the final R = 0.0296 and wR = 0.1058. In the title compound, two crystallographically independent Sm^3＋ cations are bridged by the carboxyl group of L2- ligands to form two different {Sm^2} binuclear subunits which are further connected by two distinct L2- ligands to shape a 1D chain, and such 1D chains are linked up to generate a 2D coordination polymer by another crystallographically unique L2- ligand. The thermogravimetric analysis and luminescent property of the title compound were also investigated.
文摘目的 采用HPLC法多指标成分定量测定联合正交偏最小二乘-判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)及熵权优劣解距离法(entropy weight technique for order preference by similarity to ideal solution,EWTOPSIS)对不同厂家降糖通脉片(Jiangtang Tongmai Tablets,JTT)质量进行综合评价,为科学评价JTT质量提供参考。方法 收集3个厂家15批JTT样品,采用HPLC法同时测定JTT中3’-羟基葛根素、葛根素、3’-甲氧基葛根素、太子参环肽B、哈巴苷、哈巴俄苷、二氢丹参酮Ⅰ、隐丹参酮、丹参酮Ⅰ和丹参酮Ⅱ_(A)的含量,运用SPSS26.0和SIMCA14.1统计软件进行层次聚类分析(hierarchical cluster analysis,HCA)、主成分分析(principal component analysis,PCA)和OPLS-DA,建立JTT HCA、PCA和OPLS-DA模型,获取得分图和载荷图及变量重要性投影(variable importance in projection,VIP)值,筛选并分析影响JTT质量差异的主要物质基础,并运用EW-TOPSIS法对不同厂家JTT进行质量优劣性评价。结果 3’-羟基葛根素、葛根素、3’-甲氧基葛根素、太子参环肽B、哈巴苷、哈巴俄苷、二氢丹参酮Ⅰ、隐丹参酮、丹参酮Ⅰ和丹参酮Ⅱ_(A)分别在5.97~298.50、14.45~722.50、4.89~244.50、0.58~29.00、6.55~327.50、2.46~123.00、1.39~69.50、3.56~178.00、4.25~212.50和7.97~398.50μg/mL(r≥0.999 1)线性关系良好,平均加样回收率(n=9)分别为99.53%、100.10%、98.95%、96.97%、100.03%、98.84%、97.06%、98.37%、99.31%、99.18%,RSD分别为0.71%、0.63%、0.98%、1.47%、0.79%、1.30%、1.26%、1.18%、1.39%、1.55%。化学计量学分析结果显示15批JTT样品聚为3类,同一厂家JTT样品聚为一类,不同生产厂家样品质量存在一定差异;葛根素、丹参酮Ⅰ、哈巴苷和丹参酮Ⅱ_(A)是影响JTT样品质量的主要潜在标志物;EW-TOPSIS法可用于不同厂家JTT质量优劣的评价。结论 建立的HPLC多指标成分定量测定方法操作便捷、结果准确,结合HCA、PCA、OPLS-DA及EW-TOPSIS法可用于JTT质量的综合评价。
