A polymetallic layer is usually developed at the bottom of the early Cambrian black shale in Guizhou Province.The mineral that makes up the polymetallic layer is related to the sedimentary facies.To analyze the differ...A polymetallic layer is usually developed at the bottom of the early Cambrian black shale in Guizhou Province.The mineral that makes up the polymetallic layer is related to the sedimentary facies.To analyze the differentiation mechanism between polymetallic deposits(Ni-Mo and V),the Zhijin Gezhongwu profile located in the outer shelf and the Sansui Haishan V deposit located in the lower slope are selected to study the in situ sulfur isotopes and trace elements of pyrite.The results show that δ^(34)S values of pyrite vary widely from−7.8‰to 28‰in the Gezhongwu profile,while the δ^(34)S values are relatively uniform(from 27.8‰to 38.4‰)in the Haishan profile.The isotopic S composition is consistent with the transition that occurs in the sedimentary phase from the shelf to the deep sea on the transgressive Yangtze platform;this indicates that the δ^(34)SO_(4)^(2−)values in seawater must be differently distributed in depositional environments.The sulfur in the Ni-Mo layer is produced after the mixing of seawater and hydrothermal fluid,while the V layer mainly originates from seawater.Overall,the Ni-Mo and V deposits have been differentiated primarily on the basis of the combined effect of continental weathering and hydrothermal fluid.展开更多
目的:通过网络药理学的方法探索川芎-当归药对治疗血管性痴呆的作用机制。方法:应用中药系统药理学数据库与分析平台(TCMSP)、GeneCards数据库检索,获得当归-川芎药对与血管性痴呆的交集靶点。构建交集靶点蛋白质-蛋白质相互作用网络及...目的:通过网络药理学的方法探索川芎-当归药对治疗血管性痴呆的作用机制。方法:应用中药系统药理学数据库与分析平台(TCMSP)、GeneCards数据库检索,获得当归-川芎药对与血管性痴呆的交集靶点。构建交集靶点蛋白质-蛋白质相互作用网络及共同靶点的相互作用网络图,并对交集靶点进行基因本体论(GO)和京都基因与基因组百科全书(KEGG)富集分析。结果:共筛选出川芎-当归药对活性成分13个,作用靶点155个,血管性痴呆靶点1215个,取交集后获得共同作用靶点76个。核心成分为β-谷甾醇、杨梅酮、叶酸;核心靶点为丝裂原活化蛋白激酶(Mitogen-Activated Protein Kinase,MAPK)14、MAPK10。GO富集分析显示,以上共同作用靶点主要参与血管生成、细胞外调节蛋白激酶(Extracellular Regulated Protein Kinases,ERK)1和ERK2级联的正向调节、细胞内类固醇激素受体信号传导途径和凋亡过程的正调控等细胞生物过程。KEGG富集结果显示,交集靶点富集的信号通路中与血管性痴呆相关的主要有动脉粥样硬化相关信号通路、突触相关通路、肿瘤坏死因子(Tumor Necrosis Factor,TNF)信号通路等。分子对接结果显示,川芎-当归药对的核心成分与核心靶点均结合稳定。结论:川芎-当归药对治疗血管性痴呆的作用是多靶点、多途径的,其作用机制可能与动脉粥样硬化、血清突触、TNF等信号通路相关。展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.42272103,92062221,42063009,U1812402)the Guizhou Provincial Science and Technology Projects(Grant No.Qiankehejichu–ZK[2022]common 213)the Higher Education Scientific Research Projects of the Education Department of Guizhou Province(Grant No.Qianjiaoji[2022]157).
文摘A polymetallic layer is usually developed at the bottom of the early Cambrian black shale in Guizhou Province.The mineral that makes up the polymetallic layer is related to the sedimentary facies.To analyze the differentiation mechanism between polymetallic deposits(Ni-Mo and V),the Zhijin Gezhongwu profile located in the outer shelf and the Sansui Haishan V deposit located in the lower slope are selected to study the in situ sulfur isotopes and trace elements of pyrite.The results show that δ^(34)S values of pyrite vary widely from−7.8‰to 28‰in the Gezhongwu profile,while the δ^(34)S values are relatively uniform(from 27.8‰to 38.4‰)in the Haishan profile.The isotopic S composition is consistent with the transition that occurs in the sedimentary phase from the shelf to the deep sea on the transgressive Yangtze platform;this indicates that the δ^(34)SO_(4)^(2−)values in seawater must be differently distributed in depositional environments.The sulfur in the Ni-Mo layer is produced after the mixing of seawater and hydrothermal fluid,while the V layer mainly originates from seawater.Overall,the Ni-Mo and V deposits have been differentiated primarily on the basis of the combined effect of continental weathering and hydrothermal fluid.
文摘目的:通过网络药理学的方法探索川芎-当归药对治疗血管性痴呆的作用机制。方法:应用中药系统药理学数据库与分析平台(TCMSP)、GeneCards数据库检索,获得当归-川芎药对与血管性痴呆的交集靶点。构建交集靶点蛋白质-蛋白质相互作用网络及共同靶点的相互作用网络图,并对交集靶点进行基因本体论(GO)和京都基因与基因组百科全书(KEGG)富集分析。结果:共筛选出川芎-当归药对活性成分13个,作用靶点155个,血管性痴呆靶点1215个,取交集后获得共同作用靶点76个。核心成分为β-谷甾醇、杨梅酮、叶酸;核心靶点为丝裂原活化蛋白激酶(Mitogen-Activated Protein Kinase,MAPK)14、MAPK10。GO富集分析显示,以上共同作用靶点主要参与血管生成、细胞外调节蛋白激酶(Extracellular Regulated Protein Kinases,ERK)1和ERK2级联的正向调节、细胞内类固醇激素受体信号传导途径和凋亡过程的正调控等细胞生物过程。KEGG富集结果显示,交集靶点富集的信号通路中与血管性痴呆相关的主要有动脉粥样硬化相关信号通路、突触相关通路、肿瘤坏死因子(Tumor Necrosis Factor,TNF)信号通路等。分子对接结果显示,川芎-当归药对的核心成分与核心靶点均结合稳定。结论:川芎-当归药对治疗血管性痴呆的作用是多靶点、多途径的,其作用机制可能与动脉粥样硬化、血清突触、TNF等信号通路相关。
