通过网络药理学与分子对接技术探讨中风醒脑液干预脑出血微循环障碍的作用机制。中风醒脑液组分化学成分信息通过中药系统药理数据库和分析平台(Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,TCM...通过网络药理学与分子对接技术探讨中风醒脑液干预脑出血微循环障碍的作用机制。中风醒脑液组分化学成分信息通过中药系统药理数据库和分析平台(Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,TCMSP),其化学成分预测的靶点分别通过PubChem和SwissTargetPrediction获得,脑出血和微循环障碍的相关靶点收集源于GeneCards数据库,成分与疾病共同靶点经过DAVID数据库进行基因本体论(Gene Ontology,GO)和京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)富集分析,使用Cytoscape软件将相关网络关系可视化,进一步筛选重要化学成分与疾病靶点进行分子对接预测。动物实验验证采用改良神经功能评分(modified neurological severity score,mNSS)、酶联免疫吸附测定(enzyme-linked immunosorbent assay,ELISA)、实时荧光定量聚合酶链式反应(quantitative real-time polymerase chain reaction,qRT-PCR)、免疫荧光和蛋白质印迹法(Western blot)检测中风醒脑液干预脑出血模型小鼠的作用情况。结果显示,中风醒脑液4个组分共有31个化学成分和856个靶点,脑出血微循环障碍靶点共有173个,疾病与成分共同靶点57个;富集分析显示共同靶点主要参与细胞增殖、凋亡等生物过程,肿瘤通路、病毒感染、磷脂酰肌醇-3-激酶/蛋白激酶B(phosphoinositide-3-kinase/protein kinase B,PI3K/AKT)信号通路、丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)信号通路等信号通路。分子对接结果发现大黄、三七、红参的共同成分β-谷甾醇与原癌基因酪氨酸蛋白激酶(proto-oncogene tyrosine-protein kinase,SRC)、信号转导和转录激活因子3(signal transducer and activator of transcription 3,STAT3)、磷脂酰肌醇-3-激酶催化亚基α基因(phosphoinositide-3-kinase catalytic alpha polypeptide gene,PIK3CA)、非受体型蛋白酪氨酸磷酸酶11(recombinant protein tyrosine phosphatase non recepto展开更多
There have recently appeared many reports dedicated to cerebral hemodynamics disorders in AD. However, certain specific aspects of cerebral blood flow and microcirculation during this disease are not fully understood....There have recently appeared many reports dedicated to cerebral hemodynamics disorders in AD. However, certain specific aspects of cerebral blood flow and microcirculation during this disease are not fully understood. This research focuses on the identification of particular features of cerebral angioarchitectonics and microcirculation at preclinical and clinical AD stages and on the determination of their importance in AD etiology and pathogenesis. 164 patients participated in the research: Test Group—81 patients with different AD stages;Control Group— 83 patients with etiologically different neurodegenerative brain lesions with manifestations of dementia and cognitive impairment but without AD. All patients underwent: assessment of cognitive function (MMSE), severity of dementia (CDR) and AD stages (TDR), laboratory examination, computed tomography (CT), magnetic resonance imaging (MRI), brain scintigraphy (SG), rheoencephalography (REG) and cerebral multigated angiography (MUGA). All Test Group patients, irrespective of their AD stage, had abnormalities of the cerebral microcirculation manifested in dyscirculatory angiopathy of Alzheimer’s type (DAAT), namely: reduction of the capillary bed in the hippocampus and frontal-parietal regions;development of multiple arteriovenous shunts in the same regions;early venous dumping of arterial blood through these shunts with simultaneous filling of arteries and veins;development of abnormally enlarged lateral venous trunks that receive blood from the arterio-venous shunts;anomalous venous congestion at the border of frontal and parietal region;increased loop formation of distal intracranial arterial branches. Control group patients did not have combinations of such changes. These abnormalities are specific for AD and can affect amyloid beta metabolism contributing to its accumulation in the brain tissue and thereby stimulating AD progression.展开更多
文摘通过网络药理学与分子对接技术探讨中风醒脑液干预脑出血微循环障碍的作用机制。中风醒脑液组分化学成分信息通过中药系统药理数据库和分析平台(Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform,TCMSP),其化学成分预测的靶点分别通过PubChem和SwissTargetPrediction获得,脑出血和微循环障碍的相关靶点收集源于GeneCards数据库,成分与疾病共同靶点经过DAVID数据库进行基因本体论(Gene Ontology,GO)和京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)富集分析,使用Cytoscape软件将相关网络关系可视化,进一步筛选重要化学成分与疾病靶点进行分子对接预测。动物实验验证采用改良神经功能评分(modified neurological severity score,mNSS)、酶联免疫吸附测定(enzyme-linked immunosorbent assay,ELISA)、实时荧光定量聚合酶链式反应(quantitative real-time polymerase chain reaction,qRT-PCR)、免疫荧光和蛋白质印迹法(Western blot)检测中风醒脑液干预脑出血模型小鼠的作用情况。结果显示,中风醒脑液4个组分共有31个化学成分和856个靶点,脑出血微循环障碍靶点共有173个,疾病与成分共同靶点57个;富集分析显示共同靶点主要参与细胞增殖、凋亡等生物过程,肿瘤通路、病毒感染、磷脂酰肌醇-3-激酶/蛋白激酶B(phosphoinositide-3-kinase/protein kinase B,PI3K/AKT)信号通路、丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)信号通路等信号通路。分子对接结果发现大黄、三七、红参的共同成分β-谷甾醇与原癌基因酪氨酸蛋白激酶(proto-oncogene tyrosine-protein kinase,SRC)、信号转导和转录激活因子3(signal transducer and activator of transcription 3,STAT3)、磷脂酰肌醇-3-激酶催化亚基α基因(phosphoinositide-3-kinase catalytic alpha polypeptide gene,PIK3CA)、非受体型蛋白酪氨酸磷酸酶11(recombinant protein tyrosine phosphatase non recepto
文摘There have recently appeared many reports dedicated to cerebral hemodynamics disorders in AD. However, certain specific aspects of cerebral blood flow and microcirculation during this disease are not fully understood. This research focuses on the identification of particular features of cerebral angioarchitectonics and microcirculation at preclinical and clinical AD stages and on the determination of their importance in AD etiology and pathogenesis. 164 patients participated in the research: Test Group—81 patients with different AD stages;Control Group— 83 patients with etiologically different neurodegenerative brain lesions with manifestations of dementia and cognitive impairment but without AD. All patients underwent: assessment of cognitive function (MMSE), severity of dementia (CDR) and AD stages (TDR), laboratory examination, computed tomography (CT), magnetic resonance imaging (MRI), brain scintigraphy (SG), rheoencephalography (REG) and cerebral multigated angiography (MUGA). All Test Group patients, irrespective of their AD stage, had abnormalities of the cerebral microcirculation manifested in dyscirculatory angiopathy of Alzheimer’s type (DAAT), namely: reduction of the capillary bed in the hippocampus and frontal-parietal regions;development of multiple arteriovenous shunts in the same regions;early venous dumping of arterial blood through these shunts with simultaneous filling of arteries and veins;development of abnormally enlarged lateral venous trunks that receive blood from the arterio-venous shunts;anomalous venous congestion at the border of frontal and parietal region;increased loop formation of distal intracranial arterial branches. Control group patients did not have combinations of such changes. These abnormalities are specific for AD and can affect amyloid beta metabolism contributing to its accumulation in the brain tissue and thereby stimulating AD progression.
