Cavum velum interpositum cysts in normal and anomalous fetuses in second trimester of pregnancy: Comparison of its size and prevalence

ObjectiveCavum veli interpositi (CVI) is a potential space below the splenium of corpus callosum and sometimes presents as a cyst.Materials and methodsIn this prospective cross-sectional study, 360 fetuses with normal second trimester scan and 152 s trimester fetuses with structural abnormalities were included.ResultsThe CVI cysts were more common in fetuses with brain anomaly compared to normal fetuses and fetuses with extra-central nervous system (CNS) anomalies (23% vs 18.3% and 18% respectively; p value < 0.01). The mean size of cysts in normal fetuses, fetuses with extra-CNS anomalies and fetuses with brain abnormalities was 4.6 mm, 5.8 mm and 9.2 mm respectively. There was a significant difference between cysts size in normal fetuses and fetuses with brain anomalies (p value < 0.01) and the cut-point was 7.1 mm.ConclusionThe prevalence of CVI cysts is more in fetuses with brain anomaly. Fetuses with a cyst size >7.1 mm need a more detailed brain examination.     

知信行评价体系对初产妇产褥期母婴照护能力的影响

目的 构建初产妇知信行评价体系并探讨其对初产妇产褥期母婴照护能力的影响。 方法 选取2017年2月-2018年2月在我院产科分娩的120例初产妇为研究对象,采用随机数字表法将其分成研究组和对照组,每组各60例;对照组采取常规护理和健康宣教,研究组应用知信行评价体系,比较2组产褥期健康知识水平及母婴照护能力。 结果 干预4周后,研究组产褥期一般知识、新生儿护理知识及母乳喂养知识水平均高于对照组(t=8.373,P<0.001; t=9.495,P<0.001; t=13.946,P<0.001);产褥期母婴照护行为能力高于对照组。 结论 应用知信行评价体系对初产妇开展针对性干预,有助于提升产妇的康复知识水平及新生儿照护知识和技能,保障母婴安全,具有重要社会价值和临床意义。     

载三氧化二砷脑胶质瘤靶向纳米递药系统i RGD/TGN-PEG-PAMAM/ATO的构建及体外研究

目的以树状大分子为载体材料并修饰血脑屏障(blood brain barrier,BBB)靶向短肽TGN和肿瘤靶向短肽i RGD构建脑胶质瘤靶向递药系统(i RGD/TGN-PEG-PAMAM/ATO),旨在解决三氧化二砷(arsenictrioxide,As2O3,ATO)在治疗脑胶质瘤过程中分布缺乏特异性、透BBB难等问题,使其具有更好抗脑胶质瘤作用。方法核磁共振图谱(1H-NMR)、透射电子显微镜(TEM)等考察载体的理化性质;电感耦合等离子发射光谱(ICP)、透析袋法分析其包封率及体外释放情况;通过激光共聚焦及流式细胞仪分析i RGD、TGN对细胞摄取的影响;MTT法考察纳米载体对脑微血管内皮细胞(HBMEC)和脑胶质瘤U87细胞的毒性及BBB模型中递药系统抑制U87细胞生长的情况。结果成功合成了i RGD/TGN-PEG-PAMAM载体,其形态规整,大小均匀,测得其粒径(24.87±0.84)nm,电位(17.26±1.64)m V;该载体对HBMEC和U87细胞均具有较小的毒性;递药系统i RGD/TGN-PEG-PAMAM/ATO的包封率为(71.92±1.17)%,体外释放表明ATO经载体包载后呈现一种缓慢释放趋势,且在酸性条件下更有利于ATO的释放;细胞摄取结果提示iRGD/TGN的修饰有利于U87细胞对递药系统的摄取;体外跨BBB抑制U87细胞生长实验结果表明,i RGD/TGN-PEG-PAMAM/ATO组具有更好的跨BBB抑制U87细胞生长效果。结论 i RGD/TGN-PEG-PAMAM/ATO脑胶质瘤靶向递药系统具有较好的体外跨BBB抑制U87细胞生长的效果,为脑胶质瘤治疗提供了新的策略。     

动物药材生产及产地加工技术标准体系建设

药用动物资源是中药资源的重要组成部分,是中医药发展的重要战略储备资源,在野生药用动物资源日渐匮乏的今天,大力开展药用动物人工养殖才能确保我国中医药产业的可持续发展。然而《中国药典》2015年版一部收载的106种药用动物中仅有22种(除家畜家禽外)有现行选育、养殖相关标准,共211项,其中除国家标准7项、行业标准(农业、水产)11项外均为地方标准,远远落后于同类型农业标准化程度,无法实现动物药材规范化生产。亟需对常见动物药材蟾酥、水蛭、全蝎等建立包括基础标准、产品标准、工艺过程标准、安全标准、环境保护标准、管理标准、工作标准在内的动物药材生产及产地加工技术标准体系,补充产业空白,从源头把控动物药材、动物类中药饮片及含有动物性成分中药产品质量。     

中药资源产业副产品循环利用模式研究

"健康中国"建设战略的提出促使我国中药资源产业必须走一条高质量发展之路。但目前我国中药资源产业还未摆脱粗放、污染和孤岛式的发展模式。通过分析中药资源产业生产过程中产生的副产品及废弃物现象及原因、传统处理方式的不足,基于循环经济和超循环经济理论,研究如何高质量绿色发展,创新中药副产品循环利用的模式,构建中药资源高效利用的超循环经济模式体系,最后提出了促进我国中药资源产业高质量发展的策略建议。     

Developmental validation of the ANDE™ rapid DNA system with FlexPlex™ assay for arrestee and reference buccal swab processing and database searching

A developmental validation was performed to demonstrate reliability, reproducibility and robustness of the ANDE System with the FlexPlex assay, including an integrated Expert System, across a number of laboratories and buccal sample variations. Previously, the related DNAscan™/ANDE 4C Rapid DNA System using the PowerPlex^®16 assay and integrated Expert System Software received NDIS approval in March 2016. The enhanced ANDE instrument, referred to as ANDE 6C, and the accompanying 6-dye, 27-locus STR assay, referred to as FlexPlex, have been developed to be compatible with all widely used global loci, including the expanded set of the CODIS core 20 loci.Six forensic and research laboratories participated in the FlexPlex Rapid DNA developmental validation experiments, testing a total of 2045 swabs, including those obtained from 1387 unique individuals. The goal of this extensive and comprehensive validation was to thoroughly evaluate and document the ANDE System and its internal Expert System to reliably genotype reference buccal swab samples in a manner compliant with the FBI’s Quality Assurance Standards and the NDIS Operational Procedures.The ANDE System, including automated Expert System analysis, generated reproducible and concordant results for buccal swabs when testing various instruments at different laboratories by a number of different operators. When testing a number of non-human DNAs, including oral bacteria, the ANDE System and FlexPlex assay demonstrated limited cross-reactivity. Potential PCR inhibitors were evaluated as part of the validation and no inhibition was detected. Reproducible and concordant profiles were generated from buccal swab samples collected with a limit of detection appropriate for buccal swab collections from arrestees. The precision and resolution of the System met industry standards for detection of microvariants and single base resolution.The integrated Expert System appropriately demonstrated the ability to correctly pass or fail profiles for CODIS upload without human review. During this comprehensive developmental validation, the ANDE System successfully interpreted over 2000 samples tested with over 99.99% concordant alleles. The data package described herein led to the ANDE System with the FlexPlex assay receiving NDIS approval in June 2018.     

What do quantitative ratings and qualitative comments tell us about general surgery residents’ progress toward independent practice? Evidence from a 5-year longitudinal cohort

Background

This study examines the alignment of quantitative and qualitative assessment data in end-of-rotation evaluations using longitudinal cohorts of residents progressing throughout the five-year general surgery residency.