甘草种子与种苗质量分级标准研究

目的:研究甘草种子、种苗质量分级标准,为甘草药材规范化生产奠定基础。方法:以全国主产区所流通的甘草种子、种苗为样本,通过收集种子的发芽率、净度、含水量、千粒质量,种苗的根长、芦头直径和百株质量等指标信息,采用K-均值聚类分析法、标准差法、平均值法并结合生产实践对甘草种子、种苗进行分级,并开展田间栽培比较试验,对等级划分的合理性进行验证。结果:甘草种子质量等级划分为3个等级,各级甘草种子的千粒质量不低于8 g,含水量不低于10%,一级种子:发芽率≥90%,净度≥90%;二级种子:90%>发芽率≥85%,90%>净度≥85%;三级种子:85%>发芽率≥80%,85%>净度≥80%。甘草种苗质量等级划分为3个等级,一级种苗:根长≥45 cm,芦头直径≥0.8 cm,1.3 kg≤百株质量<0.8 kg;二级种苗:45 cm>根长≥35 cm,0.8 cm>芦头直径≥0.6 cm,0.8 kg≤百株质量<0.4 kg;三级种苗:35 cm>根长≥25 cm,0.6 cm>芦头直径≥0.4 cm,0.4 kg≤百株质量≤0.2 kg。结论:经验证,甘草种子、种苗质量等级划分合理,便于生产实践应用。     

风池穴不同刺法对椎动脉型颈椎病的临床疗效评价

目的:探究风池穴不同刺法对椎动脉型颈椎病的临床疗效。方法:选择2018年4月—2019年1月北京中医药大学东直门医院针灸科门诊就诊的84例椎动脉型颈椎病患者作为研究对象,分为观察组43例、对照组41例。观察组采用短刺法针刺风池穴治疗,对照组采用平补平泻法针刺风池穴治疗,1个疗程后比较两组患者的ESCV、颈椎病症状分级量化表评分以及TCD相关指标,TCD指标观察基底动脉和双侧椎动脉的平均血流速度(Vm)、收缩期血流速度峰值(Vs)、血管搏动指数(PI)和血管阻力指数(RI)的变化。结果:治疗前后两组ESCV、颈椎病症状分级量化表评分比较,差异有统计学意义(P<0.05),且椎动脉、基底动脉的Vs、Vm较治疗前明显减慢,且观察组治疗效果优于对照组(P<0.05)。结论:针刺风池穴治疗椎动脉型颈椎病临床效果显著,且短刺法优于平补平泻法。     

五味子醇甲对APP/PS1小鼠学习记忆和NF-κB p65的影响

目的研究五味子醇甲(SCH)对APP/PS1双转基因痴呆小鼠行为学和NF-κB p65的影响。方法将35只APP/PS1双转基因痴呆小鼠随机分为模型(APP/PS1)组、五味子醇甲(SCH+APP/PS1)组;另以同背景同月龄的C 57 BL/6 J阴性小鼠为空白(WT)组。SCH+APP/PS1组给予SCH悬浊液灌胃(2.6 mg·kg^-1·d^-1),模型组和空白组给予等量蒸馏水灌胃。各组灌胃30 d进行Mirror水迷宫空间探索试验后取材。HE染色法观察皮层及海马CA1区神经细胞的形态结构。运用DCFH-DA法检测脑组织活性氧(ROS)含量。Western印迹检测法检验磷酸化核转录因子(NF-κB p65,pp65)的表达。结果与APP/PS 1组相比,APP/PS 1+SCH组有效区停留距离及时间明显延长,差异有统计学意义(P<0.05,P<0.01);APP/PS 1+SCH组穿越有效区次数和平台区停留距离增加,均差异有统计学意义(P<0.01)。APP/PS 1+SCH组HE染色观察皮层有部分神经细胞萎缩、减少,较APP/PS1组明显好转,海马细胞排列整齐度尚可、较均匀。与APP/PS1组相比,APP/PS1+SCH组能降低ROS含量,差异有统计学意义(P<0.05)。APP/PS 1+SCH组皮层及海马pp65蛋白相对表达量下调(P<0.05,P<0.01)。结论SCH可能通过降低ROS含量和抑制pp65保护脑组织形态结构和提高APP/PS1鼠空间探索记忆能力。     

Long Noncoding RNA WEE2-AS1 Plays an Oncogenic Role in Glioblastoma by Functioning as a Molecular Sponge for MicroRNA-520f-3p

The long noncoding RNA WEE2 antisense RNA 1 (WEE2-AS1) plays an oncogenic role in hepatocellular carcinoma and triple negative breast cancer progression. In this study, we investigated the expression and roles of WEE2-AS1 in glioblastoma (GBM). Furthermore, the molecular mechanisms behind the oncogenic actions of WEE2-AS1 in GBM cells were explored in detail. WEE2-AS1 expression was detected using quantitative real-time polymerase chain reaction. The roles of WEE2-AS1 in GBM cells were evaluated by the cell counting kit-8 assay, flow cytometric analysis, Transwell cell migration and invasion assays, and tumor xenograft experiments. WEE2-AS1 expression was evidently enhanced in GBM tissues and cell lines compared with their normal counterparts. An increased level of WEE2-AS1 was correlated with the average tumor diameter, Karnofsky Performance Scale score, and shorter overall survival among GBM patients. Functionally, depleted WEE2-AS1 attenuated GBM cell proliferation, migration, and invasion in vitro, promoted cell apoptosis, and impaired tumor growth in vivo. Mechanistically, WEE2-AS1 functioned as a molecular sponge for microRNA- 520f-3p (miR-520f-3p) and consequently increased specificity protein 1 (SP1) expression in GBM cells. A series of recovery experiments revealed that the inhibition of miR-520f-3p and upregulation of SP1 could partially abrogate the influences of WEE2-AS1 downregulation on GBM cells. In conclusion, WEE2-AS1 can adsorb miR-520f-3p to increase endogenous SP1 expression, thereby facilitating the malignancy of GBM. Therefore, targeting the WEE2-AS1–miR-520f-3p–SP1 pathway might be a promising therapy for the management of GBM in the future.