目的探究黄芪的3个重要产地(山西浑源与朔州、甘肃渭源与岷县、陕西子洲)所产黄芪饮片的成分差异,为其基原鉴定与质量研究提供参考依据。方法用超高效液相色谱-四级杆/静电场轨道阱高分辨质谱技术(UHPLC-Q-Orbitrap-MS)测定3个不同产地...目的探究黄芪的3个重要产地(山西浑源与朔州、甘肃渭源与岷县、陕西子洲)所产黄芪饮片的成分差异,为其基原鉴定与质量研究提供参考依据。方法用超高效液相色谱-四级杆/静电场轨道阱高分辨质谱技术(UHPLC-Q-Orbitrap-MS)测定3个不同产地黄芪饮片的化学成分。以变量投影重要性(VIP)>1、P<0.05为标准,筛选获得其显著差异成分,用SIMCA软件对所得化合物及差异化合物进行聚类分析、偏最小二乘法判别分析(partial least squares discriminant analysis,PLS-DA)。结果4-羟基肉桂酸、胱氨酸、刺芒柄花素等21个化合物在甘肃、陕西、山西3个产地黄芪之间存在显著差异,其中甘肃与山西产地的黄芪差异性成分有1个,山西与陕西产地的黄芪差异成分有11个,甘肃与陕西产地的黄芪差异成分有18个。结论基于UHPLC-QOrbitrap-MS液质联用技术及聚类分析、PLS-DA等成分分析方法所得21个差异性成分,可为不同产地及品种黄芪饮片的来源鉴定及质量控制提供理论依据。展开更多
目的 :观察替比夫定在慢性乙型肝炎病毒(hepatitis B virus,HBV)感染妇女妊娠中后期的应用效果,为育龄乙型肝炎妇女治疗方案的选择提供依据。方法:回顾性分析2011年1月—2016年12月在南通大学附属南通第三医院和南通大学附属医院分娩的...目的 :观察替比夫定在慢性乙型肝炎病毒(hepatitis B virus,HBV)感染妇女妊娠中后期的应用效果,为育龄乙型肝炎妇女治疗方案的选择提供依据。方法:回顾性分析2011年1月—2016年12月在南通大学附属南通第三医院和南通大学附属医院分娩的乙型肝炎表面抗原(hepatitis B surface antigen,HBsAg)/乙型肝炎病毒e抗原(hepatitis B virus e antigen,HBeAg)双阳性,HBV-DNA≥1×107 copies/m L伴不同程度的转氨酶升高孕妇390例,分为替比夫定组252例和对照组138例,比较两组肝功能的转归和HBV-DNA载量的变化,观察两组母婴不良妊娠结局,比较两组患者的母婴传播情况。结果:与对照组比较,替比夫定组谷丙转氨酶和谷草转氨酶显著下降(P<0.001),临产前、产后7个月、产后1年HBV-DNA载量均较对照组下降明显(P<0.001);且不增加胎膜早破、产后出血、新生儿窒息、低出生体质量儿的发生率(P>0.05),产后7个月、产后1年婴儿HBsAg阳性率低于对照组(P<0.001),替比夫定使母婴传播率下降。结论:孕妇妊娠中后期替比夫定能有效阻断母婴传播,促进肝功能恢复,降低HBV-DNA载量,不增加母婴并发症的发生。展开更多
There are two types of temporally and spatially associated intrusions within the Emeishan large igneous province （LIP）; namely, small ultramafic subvolcanic sills that host magmatic Cu-Ni-Platinum Group Element （PG...There are two types of temporally and spatially associated intrusions within the Emeishan large igneous province （LIP）; namely, small ultramafic subvolcanic sills that host magmatic Cu-Ni-Platinum Group Element （PGE）-bearing sulfide deposits and large mafic layered intrusions that host giant Ti-V magnetite deposits in the Panxi region. However, except for their coeval ages, the genetic relations between the ore-bearing intrusions and extrusive rocks are poorly understood. Phase equilibria analysis （Q-PI-OI-Opx-Cpx system） has been carried out to elucidate whether ore-bearing Panzhihua, Xinjie and Limahe intrusions are co-magmatic with the picrites and flood basalts （including high-Ti, low-Ti and alkali basalts）, respectively. In this system, the parental magma can be classified as silica-undersaturated olivine basalt and silica-saturated tholeiite. The equivalents of the parental magma of the Xinjie and Limahe peridotites and picrites and low-Ti basalts are silica-undersaturated, whereas the Limahe gabbro-diorites and high-Ti basalts are silica-saturated. In contrast, the Panzhihua intrusion appears to be alkali character. Phase equilibria relations clearly show that the magmas that formed the Panzhihua intrusion and high-Ti basalts cannot be co-magmatic as there is no way to derive one liquid from another by fractional crystallization. On the other hand, the Panzhihua intrusion appears to be related to Permian alkali intrusions in the region, but does not appear to be related to the alkali basalts recognized in the Longzhoushan lava stratigraphy. Comparably, the Limahe intrusion appears to be a genetic relation to the picrites, whereas the Xinjie intrusion may be genetically related to be low-Ti basalts. Additionally, the gabbro-diorites and peridotites of the Limahe intrusion are not co-magmatic, and the former appears to be derived liquid from high-Ti basalts.展开更多
文摘目的探究黄芪的3个重要产地(山西浑源与朔州、甘肃渭源与岷县、陕西子洲)所产黄芪饮片的成分差异,为其基原鉴定与质量研究提供参考依据。方法用超高效液相色谱-四级杆/静电场轨道阱高分辨质谱技术(UHPLC-Q-Orbitrap-MS)测定3个不同产地黄芪饮片的化学成分。以变量投影重要性(VIP)>1、P<0.05为标准,筛选获得其显著差异成分,用SIMCA软件对所得化合物及差异化合物进行聚类分析、偏最小二乘法判别分析(partial least squares discriminant analysis,PLS-DA)。结果4-羟基肉桂酸、胱氨酸、刺芒柄花素等21个化合物在甘肃、陕西、山西3个产地黄芪之间存在显著差异,其中甘肃与山西产地的黄芪差异性成分有1个,山西与陕西产地的黄芪差异成分有11个,甘肃与陕西产地的黄芪差异成分有18个。结论基于UHPLC-QOrbitrap-MS液质联用技术及聚类分析、PLS-DA等成分分析方法所得21个差异性成分,可为不同产地及品种黄芪饮片的来源鉴定及质量控制提供理论依据。
文摘目的 :观察替比夫定在慢性乙型肝炎病毒(hepatitis B virus,HBV)感染妇女妊娠中后期的应用效果,为育龄乙型肝炎妇女治疗方案的选择提供依据。方法:回顾性分析2011年1月—2016年12月在南通大学附属南通第三医院和南通大学附属医院分娩的乙型肝炎表面抗原(hepatitis B surface antigen,HBsAg)/乙型肝炎病毒e抗原(hepatitis B virus e antigen,HBeAg)双阳性,HBV-DNA≥1×107 copies/m L伴不同程度的转氨酶升高孕妇390例,分为替比夫定组252例和对照组138例,比较两组肝功能的转归和HBV-DNA载量的变化,观察两组母婴不良妊娠结局,比较两组患者的母婴传播情况。结果:与对照组比较,替比夫定组谷丙转氨酶和谷草转氨酶显著下降(P<0.001),临产前、产后7个月、产后1年HBV-DNA载量均较对照组下降明显(P<0.001);且不增加胎膜早破、产后出血、新生儿窒息、低出生体质量儿的发生率(P>0.05),产后7个月、产后1年婴儿HBsAg阳性率低于对照组(P<0.001),替比夫定使母婴传播率下降。结论:孕妇妊娠中后期替比夫定能有效阻断母婴传播,促进肝功能恢复,降低HBV-DNA载量,不增加母婴并发症的发生。
基金supported by the National Basic Research Program of China(2009CB421002)National Natural Science Foundation of China(Grant No.40473008,40273020,40572036)+1 种基金Program for New Century Excellent Talents in University(Grant No.NCET-04-0728)Project(B07011)and PCSIRT.
文摘There are two types of temporally and spatially associated intrusions within the Emeishan large igneous province （LIP）; namely, small ultramafic subvolcanic sills that host magmatic Cu-Ni-Platinum Group Element （PGE）-bearing sulfide deposits and large mafic layered intrusions that host giant Ti-V magnetite deposits in the Panxi region. However, except for their coeval ages, the genetic relations between the ore-bearing intrusions and extrusive rocks are poorly understood. Phase equilibria analysis （Q-PI-OI-Opx-Cpx system） has been carried out to elucidate whether ore-bearing Panzhihua, Xinjie and Limahe intrusions are co-magmatic with the picrites and flood basalts （including high-Ti, low-Ti and alkali basalts）, respectively. In this system, the parental magma can be classified as silica-undersaturated olivine basalt and silica-saturated tholeiite. The equivalents of the parental magma of the Xinjie and Limahe peridotites and picrites and low-Ti basalts are silica-undersaturated, whereas the Limahe gabbro-diorites and high-Ti basalts are silica-saturated. In contrast, the Panzhihua intrusion appears to be alkali character. Phase equilibria relations clearly show that the magmas that formed the Panzhihua intrusion and high-Ti basalts cannot be co-magmatic as there is no way to derive one liquid from another by fractional crystallization. On the other hand, the Panzhihua intrusion appears to be related to Permian alkali intrusions in the region, but does not appear to be related to the alkali basalts recognized in the Longzhoushan lava stratigraphy. Comparably, the Limahe intrusion appears to be a genetic relation to the picrites, whereas the Xinjie intrusion may be genetically related to be low-Ti basalts. Additionally, the gabbro-diorites and peridotites of the Limahe intrusion are not co-magmatic, and the former appears to be derived liquid from high-Ti basalts.
