Deepm5C: A deep-learning-based hybrid framework for identifying human RNA N5-methylcytosine sites using a stacking strategy

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基于网络药理学和分子对接技术探讨生脉注射液抗新型冠状病毒肺炎的作用机制

目的采用网络药理学与分子对接技术探讨生脉注射液的活性成分和治疗新型冠状病毒肺炎(COVID-19)的潜在作用机制。方法利用TCMSP及BATMAN-TCM数据库筛选生脉注射液的活性化合物,通过TCMSP及Targetnet在线数据库预测作用靶点,通过Cytoscape3.7.1构建活性成分-作用靶点网络图;在GeneCards及OMIM数据库中以"coronavirus pneumonia"为关键词搜索冠状病毒肺炎相关疾病靶点,与生脉注射液化合物靶点进行交集筛选出共同靶点作为研究靶点,将共同靶点导入STRING数据库获取数据后在Cytoscape 3.7.1软件中构建蛋白质-蛋白质相互作用网络图;利用R语言进行GO(gene ontology)功能、KEGG(Kyoto encyclopedia of genes and genomes)通路富集分析,预测其作用机制,并构建"成分-靶点-通路"网络图;通过DiscoveryStudio 2.5软件对关键靶点进行分子对接分析。结果生脉注射液筛选得到22个活性化合物,分别为邻苯二甲酸二辛酯、β-谷甾醇、当归酰基戈米辛O、戈米辛A、戈米辛R、五味子丙素、内南五味子酯乙、长南酸、南五味子内酯、香蒲木脂素B、新杜松烷酸A、新杜松烷酸B、新杜松烷酸C、新南五味子木脂宁、五味子内酯A、五味子内酯E、五味子酸、尿苷、薯蓣皂苷元、鸟嘌呤核苷、N-反式阿魏酰酪胺、豆甾醇。相应作用靶点224个,与COVID-19的共同靶点16个,分别为CASP3、CASP8、PTGS2、BCL2、BAX、PRKCA、PTGS1、PIK3CG、F10、NOS3、DPP4、NOS2、TLR9、ACE、ICAM1、PRKCE,关键靶点涉及CASP3、PTGS2、NOS2、NOS3、ICAM1。GO功能富集分析得到生物过程(BP)条目771个,细胞组成(CC)条目11个,分子功能(MF)条目79个。KEGG通路富集分析筛选得到67条(P0.05)信号通路,主要涉及糖尿病并发症AGE-RAGE信号通路、凋亡通路、P53信号通路、小细胞肺癌通路等。分子对接结果显示与关键靶点对接较好的成分有五味子内酯E、豆甾醇、N-反式阿魏酰酪胺。结论生脉注射液中的活性化合物五味子内酯E、豆甾醇、N-反式阿魏酰酪胺等能作用于CASP3、PTGS2、NOS2、NOS3等靶点调节多条信号通路发挥抗炎、免疫调节、抗休克、增加血氧饱和度等作用,从而可能发挥对COVID-19的治疗作用。     

四象体质类型与糖调节受损糖尿病转化率的临床研究＊

目的 探讨糖调节受损（IGR）四象体质类型与客观指标相关性。方法 临床收集的122名成年人分为太阳人、太阴人、少阳人和少阴人（因太阳人人数较少，忽略不计）等四种体质，测量空腹血糖（FBG）、餐后2小时血糖（2hBG）、血脂四项等指标，半年后未经治疗，再次测量这些指标，计算糖尿病转化率。结果 IGR者中太阴人所占比例为55.8%，少阳人为21.7%，少阴人为22.5%。其中，朝鲜族的IGR占比明显高于满族和汉族。太阴人与少阳人、少阴人比较，FBG及2hBG、血脂四项、收缩压、舒张压、体重方面有显著性差异（P < 0.05），超重及肥胖人数太阴人中占61.2%、少阳人中占53.8%、少阴人中占29.6%。半年后复查，太阴人与少阳人、少阴人比较，FBG及2hBG、血脂四项、收缩压、舒张压方面有显著性差异（P < 0.05），糖尿病的转化率为太阴人32.8%，少阳人23.1%，少阴人3.7%。结论 IGR者中太阴人所占比例最高。IGR太阴人的FBG及2hBG、血脂四项、收缩压、舒张压、体重偏高，半年后复查，太阴人的DM转化率最高。     

Ethics as ritual: smoothing over moments of dislocation in biomedicine

Applications of biomedical R&D currently imply substantial societal concerns. This paper explores, based on semi‐structured interviews with scientists in Norway, how biomedical researchers experience and tackle such concerns in their daily work. It shows how ritualised routine responses to dislocatory moments help maintain order in the daily work of the interviewed scientists; they do not address directly but instead smooth over concerns by a ritualised way of using ethics. This may foreclose substantive reflection and function as a stabiliser for ‘business as usual’. Overall, the current way of responding to concerns as described by the interviewees may contribute to a depoliticisation of important issues. The paper contributes to sociological work on ethics by linking it to recent discussions on Responsible Research and Innovation (RRI) and by the empirical research presented. The insights can also help improve science policies such as RRI.     

欧盟和美国对药品说明书【适应症】项目的撰写要求及启示

介绍欧盟和美国有关药品说明书[适应症]项目撰写的法规和指导原则，特别是最近欧洲药品管理局（EMA）发布的"治疗适应症的用语"。从这些管理文件得到的启示是相关法规规定不宜太粗糙，应具体、精准，应包括内容和格式的规定；而且要有指导原则伴随，以保证法规落到实处。熟悉掌握药品说明书[适应症]项目的撰写要求对规范撰写其他项目有普遍指导意义，对于药品说明书的监管也有裨益。     

Hands-On Training in a Digital World: A Novel Simulation-Based Virtual Training Program for Placement and Removal of the Subdermal Contraceptive Implant

ObjectiveThe COVID-19 pandemic necessitated a shift from traditional in-person instruction for learning new technical skills to virtual delivery of medical education training. The objectives of this study were to develop and evaluate a virtual simulation-based training program for Canadian health care professionals (HCPs) on the insertion, localization, and removal of the etonogestrel subdermal contraceptive implant.MethodsA scientific committee of Canadian family planning experts developed a 2-part virtual training program during the COVID-19 pandemic. Core educational content (part 1) was provided in an asynchronous, self-directed, online format. Part 2 consisted of synchronous, simulation-based training using web conferencing. The HCPs were provided with model arms and placebo applicators; the trainers demonstrated implant insertion and removal techniques, and trainees received individual feedback. All trainees were asked to complete an online evaluation upon completion of the program.ResultsBetween September 22, 2020, and December 31, 2021, 83 trainers conducted 565 virtual training sessions. A total of 3162 HCPs completed part 1 of the training program, of whom 2740 had completed part 2 by December 31, 2021. Participants reported high levels of satisfaction with virtual simulation-based training; 96.5% of respondents (1570/1627) agreed that the virtual format was effective. Additional training prior to inserting the implant in clinical practice was requested by 4.5% of respondents (75/1671).ConclusionVirtual simulation-based learning provides effective education and technique training for etonogestrel implant insertion and removal. Online training for implant use can be scaled, as needed, to reach professionals in remote or underserved locations. This virtual training approach may be appropriate for other technical or minor surgical procedures.     

伤口组织与电刺激调控的相关性研究*

慢性伤口迁延不愈。外源性电刺激提供促进慢性伤口愈合的电流，其独特优势是使电荷调控伤口，促进伤 口愈合，具有良好的应用前景，并成为目前组织学研究者和临床医生的研究热点之一。现介绍一些常见慢性伤口 的形态学和电生理特性，主要探讨目前电荷调控伤口愈合的形态学改变、可能作用机制及其影响因素。