旨在探讨黄连防治鸭病毒性肠炎(duck viral enteritis,DVE)的作用机制,本研究首先应用中药系统药理学分析平台(Traditional Chinese Medicine System Pharmacology Analysis Platform,TCMSP)筛选黄连活性成分及作用靶点,GeneCards数据...旨在探讨黄连防治鸭病毒性肠炎(duck viral enteritis,DVE)的作用机制,本研究首先应用中药系统药理学分析平台(Traditional Chinese Medicine System Pharmacology Analysis Platform,TCMSP)筛选黄连活性成分及作用靶点,GeneCards数据库分析DVE相关靶点,Venny和Cytoscape3.7.2软件绘制黄连与DVE交集靶点及构建“药物-成分-疾病-靶点”网络,利用STRING数据库建立蛋白相互作用网络(protein interaction network,PPI),借助DAVID数据库进行靶点GO功能富集分析和KEGG通路富集分析,然后分正常对照组、病毒感染组和黄连防治组进行动物干预试验,采集组织样本进行病理组织学观察和相关细胞因子测定,结果表明:筛选出黄连14个活性成分和212个作用靶点,其中,与DVE交集的靶点25个,涉及RNA聚合酶Ⅱ启动子转录、序列特异性DNA结合转录因子活性、免疫应答、炎症反应和细胞凋亡等生物学过程,富集在Toll样受体信号通路、炎症性肠病、细胞因子-细胞因子受体相互作用、单纯疱疹病毒感染等信号通路,核心靶点是IL-6、IL-10和STAT1;病毒感染组鸭肝、脾和十二指肠发生不同程度的病理损伤,且这些组织中IL-6含量较正常对照组鸭显著提升(P≤0.05),IL-10和STAT1含量显著降低(P≤0.05),而黄连防治组鸭肝、脾和十二指肠组织病理损伤明显减轻,IL-6、IL-10和SYAT1含量趋于正常水平。由此可见,黄连能有效缓解鸭病毒性肠炎所致的鸭机体组织病理损伤,其作用机制涉及到多种炎症反应信号通路。展开更多
The presence of horizontal layered rocks in tunnel engineering significantly impacts the stability and strength of the surrounding rock mass,leading to floor heave in the tunnel.This study focused on preparing layered...The presence of horizontal layered rocks in tunnel engineering significantly impacts the stability and strength of the surrounding rock mass,leading to floor heave in the tunnel.This study focused on preparing layered specimens of rock-like material with varying thickness to investigate the failure behaviors of tunnel floors.The results indicate that thin-layered rock mass exhibits weak interlayer bonding,causing rock layers near the surface to buckle and break upwards when subjected to horizontal squeezing.With an increase in the layer thickness,a transition in failure mode occurs from upward buckling to shear failure along the plane,leading to a noticeable reduction in floor heave deformation.The primary cause of significant deformation in floor heave is upward buckling failure.To address this issue,the study proposes the installation of a partition wall in the middle of the floor to mitigate heave deformation of the rock layers.The results demonstrate that the partition wall has a considerable stabilizing effect on the floor,reducing the zone of buckling failure and minimizing floor heave deformation.It is crucial for the partition wall to be sufficiently high to prevent buckling failure and ensure stability.Through simulation calculations on an engineering example,it is confirmed that implementing a partition wall can effectively reduce floor heave and enhance the stability of tunnel floor.展开更多
文摘旨在探讨黄连防治鸭病毒性肠炎(duck viral enteritis,DVE)的作用机制,本研究首先应用中药系统药理学分析平台(Traditional Chinese Medicine System Pharmacology Analysis Platform,TCMSP)筛选黄连活性成分及作用靶点,GeneCards数据库分析DVE相关靶点,Venny和Cytoscape3.7.2软件绘制黄连与DVE交集靶点及构建“药物-成分-疾病-靶点”网络,利用STRING数据库建立蛋白相互作用网络(protein interaction network,PPI),借助DAVID数据库进行靶点GO功能富集分析和KEGG通路富集分析,然后分正常对照组、病毒感染组和黄连防治组进行动物干预试验,采集组织样本进行病理组织学观察和相关细胞因子测定,结果表明:筛选出黄连14个活性成分和212个作用靶点,其中,与DVE交集的靶点25个,涉及RNA聚合酶Ⅱ启动子转录、序列特异性DNA结合转录因子活性、免疫应答、炎症反应和细胞凋亡等生物学过程,富集在Toll样受体信号通路、炎症性肠病、细胞因子-细胞因子受体相互作用、单纯疱疹病毒感染等信号通路,核心靶点是IL-6、IL-10和STAT1;病毒感染组鸭肝、脾和十二指肠发生不同程度的病理损伤,且这些组织中IL-6含量较正常对照组鸭显著提升(P≤0.05),IL-10和STAT1含量显著降低(P≤0.05),而黄连防治组鸭肝、脾和十二指肠组织病理损伤明显减轻,IL-6、IL-10和SYAT1含量趋于正常水平。由此可见,黄连能有效缓解鸭病毒性肠炎所致的鸭机体组织病理损伤,其作用机制涉及到多种炎症反应信号通路。
基金supported by the Key Program of National Natural Science Foundation of China(No.U23A202579)the National Natural Science Foundation of China(No.42277187,42007276,41972297)the Natural Science Foundation of Hebei Province(No.D2021202002)。
文摘The presence of horizontal layered rocks in tunnel engineering significantly impacts the stability and strength of the surrounding rock mass,leading to floor heave in the tunnel.This study focused on preparing layered specimens of rock-like material with varying thickness to investigate the failure behaviors of tunnel floors.The results indicate that thin-layered rock mass exhibits weak interlayer bonding,causing rock layers near the surface to buckle and break upwards when subjected to horizontal squeezing.With an increase in the layer thickness,a transition in failure mode occurs from upward buckling to shear failure along the plane,leading to a noticeable reduction in floor heave deformation.The primary cause of significant deformation in floor heave is upward buckling failure.To address this issue,the study proposes the installation of a partition wall in the middle of the floor to mitigate heave deformation of the rock layers.The results demonstrate that the partition wall has a considerable stabilizing effect on the floor,reducing the zone of buckling failure and minimizing floor heave deformation.It is crucial for the partition wall to be sufficiently high to prevent buckling failure and ensure stability.Through simulation calculations on an engineering example,it is confirmed that implementing a partition wall can effectively reduce floor heave and enhance the stability of tunnel floor.
