discovery

Discovery
  • 文章类型: Historical Article
    After the discovery of insulin at the University of Toronto in 1921-22, Frederick Banting and Charles Best downplayed the contributions of physiology professor John James Rickard Macleod, the director of the laboratory where the discovery was made. Banting and Best, their allies, and to a lesser extent the university promoted a \"fairy tale\" version in which the two young investigators made the discovery on their own, creating the so-called \"Banting and Best myth.\" Over the next 60 years, the myth prevailed and Macleod\'s reputation became increasingly tarnished, with both Banting and Best actively maligning their former mentor. While the publication of Michael Bliss\' The Discovery of Insulin in 1982 placed Macleod\'s reputation on the road to recovery, there are still many lingering issues that have been raised, and Macleod remains misunderstood, misinterpreted, and maligned. This paper, using primary and secondary historical sources, addresses topics that have been repetitively raised by Macleod\'s detractors over the past century.
    Résumé. Après la découverte de l’insuline à l’Université de Toronto en 1921–1922, Frederick Banting et Charles Best ont minimisé les contributions du professeur de physiologie John James Rickard Macleod, directeur du laboratoire où la découverte a été faite. En compagnie de leurs alliés et dans une certaine mesure de l’Université, Banting et Best ont propagé un conte de fée dans lequel les deux jeunes chercheurs auraient fait cette découverte par eux-mêmes, donnant ainsi naissance au « mythe Banting et Best ». Au cours des 60 années suivantes, ce mythe a prévalu et la réputation de Macleod a été ternie, Banting et Best s’employant à calomnier leur ancien mentor. Si la publication de The Discovery of Insulin (1982) par Michael Bliss a quelque peu rétabli la réputation de Macleod, celui-ci est encore largement incompris, mal interprété et dénigré. En s’appuyant sur des sources historiques premières et secondaires, cet article aborde les enjeux qui ont été soulevés de manière répétée par les détracteurs de Macleod au cours du XXe siècle.
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  • 文章类型: Journal Article
    肺癌仍然是全球癌症相关死亡的主要原因,主要是由于晚期诊断和转移的存在。世界上有几个国家已经在全国范围内采用了基于LDCT的肺癌筛查,这将使患者受益。将诊断阶段转移到早期阶段,提供更多治疗选择。生物标志物可以帮助优化筛选过程,以及完善肺癌患者的TNM分层,提供有关预后的信息并推荐管理策略。此外,新的辅助治疗策略将明显受益于先前对给定早期手术切除肿瘤的潜在侵袭性和生物学特性的了解.本文重点介绍了蛋白质在肺癌筛查中作为有前途的生物标志物。尽管付出了巨大的努力,目前还没有成功的肺癌生物标志物的例子已经到达临床用于早期发现和早期治疗.因此,早期肺癌的生物标志物领域仍然是一个明显未满足的需求.这篇综述的一个更具体的目的是对蛋白质生物标志物在早期肺癌检测和管理中的潜在用途进行最新的技术评估。我们提供有关好处的概述,挑战,基于蛋白质的生物标志物开发过程中的陷阱和限制。此外,我们研究了许多新兴的蛋白质分析技术如何有助于优化新的稳健生物标志物,以筛查和有效治疗肺癌。
    Lung cancer remains the leading cause of cancer-related deaths worldwide, mainly due to late diagnosis and the presence of metastases. Several countries around the world have adopted nation-wide LDCT-based lung cancer screening that will benefit patients, shifting the stage at diagnosis to earlier stages with more therapeutic options. Biomarkers can help to optimize the screening process, as well as refine the TNM stratification of lung cancer patients, providing information regarding prognostics and recommending management strategies. Moreover, novel adjuvant strategies will clearly benefit from previous knowledge of the potential aggressiveness and biological traits of a given early-stage surgically resected tumor. This review focuses on proteins as promising biomarkers in the context of lung cancer screening. Despite great efforts, there are still no successful examples of biomarkers in lung cancer that have reached the clinics to be used in early detection and early management. Thus, the field of biomarkers in early lung cancer remains an evident unmet need. A more specific objective of this review is to present an up-to-date technical assessment of the potential use of protein biomarkers in early lung cancer detection and management. We provide an overview regarding the benefits, challenges, pitfalls and constraints in the development process of protein-based biomarkers. Additionally, we examine how a number of emerging protein analytical technologies may contribute to the optimization of novel robust biomarkers for screening and effective management of lung cancer.
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  • 文章类型: Journal Article
    慢性急性肝衰竭(ACLF)作为肝病学和肝移植社区的临床概念已经走了很长一段路。尽管该术语是在1995年提出的,但在2009年出现了对该实体的首次认可以及共识定义。随后,该实体引起了极大的兴趣,激发了几次共识会议,并激励国家协会组建专业的ACLF亲和力团体(例如,特殊利益集团)。世界各地已经建立了多中心联盟来研究这种情况,包括北美终末期肝病研究联盟,慢性肝功能衰竭财团,亚太肝病研究协会ACLF研究协会,慢性肝病事件和失代偿的演变和注册,还有LiverHope联盟.总的来说,这些联盟已经在数十个国家招募了成千上万患有ACLF或处于ACLF风险的患者,并详细表征了预测因素,发病机制,和ACLF患者的进展。也许最重要的是,他们已经产生了表征ACLF患者面临的额外发病率和死亡率的基本数据,为这种情况下迫切需要治疗策略提供了令人信服的理由。
    Acute-on-chronic liver failure (ACLF) has come a long way as a clinical concept within the hepatology and liver transplant communities. Though the term was proposed in 1995, the first recognition of the entity along with a consensus definition emerged in 2009. Subsequently, the entity has sparked great interest, inspired several consensus conferences, and inspired national societies to form professional ACLF affinity groups (eg, special interest group). Multicenter consortia have been established all over the world to study this condition, including the North American Consortium for the Study of End-Stage Liver Disease, Chronic Liver Failure consortium, Asian Pacific Association for the Study of Liver Diseases ACLF Research Consortium, Chronic Liver disease Evolution And Registry for Events and Decompensation, and the LiverHope Consortium. Collectively, these consortia have enrolled tens of thousands of patients with or at risk for ACLF across dozens of countries and characterized in detail the predictors, pathogenesis, and progression of patients with ACLF. Perhaps most importantly, they have produced essential data characterizing the excess morbidity and mortality that patients with ACLF face, making a compelling case for the urgent need for therapeutic strategies for this condition.
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  • 文章类型: Journal Article
    在植物中发现的生物活性物质,自古以来,微生物和动物就吸引了人类。这次审查将侧重于几个世纪以来取得的进展和我们日益增长的见解。这些发展与新型生物活性物质的发现和表征有关,以及精细化技术的不断实施,高端仪器的使用以及基于深度学习的计算方法在人工智能方面的突破。由于这些方法具有巨大的翻译潜力,在不同领域的许多应用,如治疗,诊断和农用化学品使用,继续投资于与毒素学相关的研究有很好的理由.
    Bioactive substances found in plants, microorganisms and animals have fascinated mankind since time immemorial. This review will focus on the progress that has been made over the centuries and our growing insights. The developments relate to both the discovery and characterization of novel bioactive substances, as well as the ceaseless implementation of refined techniques, the use of high-end instruments and breakthroughs in artificial intelligence with deep learning-based computational methods. As these approaches possess great translational potential, with many applications in different fields, such as therapeutic, diagnostic and agrochemical use, there is a good rationale to continue investing in toxinology-related research.
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  • 文章类型: Journal Article
    目的:植物性饮食与较低的慢性病风险相关。大规模蛋白质组学可以识别植物饮食的客观生物标志物,并提高我们对将植物性饮食与健康结果联系起来的途径的理解。本研究调查了四种不同植物性饮食的血浆蛋白质组[整体植物性饮食(PDI),原素食饮食,健康的植物性饮食(hPDI),和不健康的植物性饮食(uPDI)]在社区动脉粥样硬化风险(ARIC)研究中,并在弗雷明汉心脏研究(FHS)后代队列中复制了该发现。
    方法:ARIC研究参与者在第3次(1993-1995年)时使用完整的食物频率问卷(FFQ)数据和蛋白质组学数据分为内部发现(n=7690)和复制(n=2543)数据集。使用多变量线性回归来检查基于植物的饮食指数(PDIs)与发现样品中的4955种单个蛋白质之间的关联。然后,在ARIC研究中内部复制的蛋白质在FHS中进行了外部复制测试(n=1358)。对饮食相关蛋白进行通路过度表达分析。C统计量用于预测蛋白质是否改善了对植物性饮食指数的预测,超出了参与者的特征。
    结果:在ARIC发现中,在错误发现率(FDR)<0.05的情况下,共观察到837例饮食-蛋白质关联(PDI=233;原素食者=182;hPDI=406;uPDI=16).其中,453饮食-蛋白质关联(PDI=132;原素食=104;hPDI=208;uPDI=9)在内部复制。在FHS,167/453饮食-蛋白质关联可用于外部复制,其中8种蛋白质(PDI=1;前素食=0;hPDI=8;uPDI=0)复制。补体和凝血级联,细胞粘附分子,和视黄醇代谢过度。用于PDI的C-C基序趋化因子25和用于hPDI的8种蛋白质适度但显著地改善了这些指数的单独和共同的预测(对于所有测试,C统计量差异的P值<0.05)。
    结论:使用大规模蛋白质组学,我们确定了植物性饮食的潜在候选生物标志物,以及可能部分解释植物性饮食与慢性病之间关联的途径。
    OBJECTIVE: Plant-based diets are associated with a lower risk of chronic diseases. Large-scale proteomics can identify objective biomarkers of plant-based diets, and improve our understanding of the pathways that link plant-based diets to health outcomes. This study investigated the plasma proteome of four different plant-based diets [overall plant-based diet (PDI), provegetarian diet, healthful plant-based diet (hPDI), and unhealthful plant-based diet (uPDI)] in the Atherosclerosis Risk in Communities (ARIC) Study and replicated the findings in the Framingham Heart Study (FHS) Offspring cohort.
    METHODS: ARIC Study participants at visit 3 (1993-1995) with completed food frequency questionnaire (FFQ) data and proteomics data were divided into internal discovery (n = 7690) and replication (n = 2543) data sets. Multivariable linear regression was used to examine associations between plant-based diet indices (PDIs) and 4955 individual proteins in the discovery sample. Then, proteins that were internally replicated in the ARIC Study were tested for external replication in FHS (n = 1358). Pathway overrepresentation analysis was conducted for diet-related proteins. C-statistics were used to predict if the proteins improved prediction of plant-based diet indices beyond participant characteristics.
    RESULTS: In ARIC discovery, a total of 837 diet-protein associations (PDI = 233; provegetarian = 182; hPDI = 406; uPDI = 16) were observed at false discovery rate (FDR) < 0.05. Of these, 453 diet-protein associations (PDI = 132; provegetarian = 104; hPDI = 208; uPDI = 9) were internally replicated. In FHS, 167/453 diet-protein associations were available for external replication, of which 8 proteins (PDI = 1; provegetarian = 0; hPDI = 8; uPDI = 0) replicated. Complement and coagulation cascades, cell adhesion molecules, and retinol metabolism were over-represented. C-C motif chemokine 25 for PDI and 8 proteins for hPDI modestly but significantly improved the prediction of these indices individually and collectively (P value for difference in C-statistics<0.05 for all tests).
    CONCLUSIONS: Using large-scale proteomics, we identified potential candidate biomarkers of plant-based diets, and pathways that may partially explain the associations between plant-based diets and chronic conditions.
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  • 文章类型: Historical Article
    查尔斯·贝尔以发现脊髓和面神经的独立运动和感觉根而闻名,尽管近年来,他的优先权受到了历史学家和科学家的挑战。但是查尔斯·贝尔确实发现了一些东西,即使没有被赋予科学事实的地位。在1821年至1823年之间,他推出了“呼吸神经系统”,一个独特的神经系统,充当“激情的器官”,然后,他在1824年关于解剖学和表达哲学的论文中详细阐述了这一点。当贝尔和他的盟友试图要求脊髓和面神经的优先权时,呼吸神经被推到了背景,服从运动神经和感觉神经。这篇文章,因此,将查尔斯·贝尔的主要发现重新定义为“呼吸神经”,提供了他们的解剖学和生理学的详细描述,以及他们支持贝尔情绪理论的方式。它还展示了他的美学如何与他的研究计划交织在一起。然后,它将呼吸神经与托马斯·迪克森的断言联系起来,即贝尔是现代情感心理学范畴的创始人之一,提供更深入、更细致的情感家谱,包括贝尔对威廉·詹姆斯的开创性文章“什么是情感?”的影响。
    Charles Bell was famous for the discovery of the separate motor and sensory roots of the spinal and facial nerves, although in recent years his right to priority has been challenged by historians and scientists. But Charles Bell did discover something even if has not been accorded the status of a scientific fact. Between 1821 and 1823 he unveiled the \'respiratory nervous system\', a distinct system of nerves that acted as the \'organ of the passions\', which he then elaborated upon in his 1824 Essays on the Anatomy and Philosophy of Expression. As Bell and his allies attempted to claim priority in the spinal and facial nerves, the respiratory nerves were pushed to the background, subordinated to the motor and sensory nerves. This essay, therefore, redefines Charles Bell\'s major discovery as the \'respiratory nerves\', providing a detailed description of their anatomy and physiology and the way in which they underwrote Bell\'s theory of the emotions. It also demonstrates how his aesthetics were intertwined with his research programme. It then connects the respiratory nerves to Thomas Dixon\'s assertion that Bell was one of the founders of the modern psychological category of the emotions, providing a deeper and more nuanced genealogy of the emotions, including the impact that Bell had upon William James\'s seminal article \'What is an Emotion?\'
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  • 文章类型: Journal Article
    人类主要病原体肺炎链球菌已成为140多年来密集的临床和基础科学研究的主题。在多个实例中,这些努力在我们对细菌发病机理的基本生物学原理和基本原则的理解上取得了重大突破,免疫学,疫苗学,和遗传学。肺炎链球菌的发现已导致多项重大公共卫生胜利,挽救了数百万人的生命。肺炎链球菌的研究今天仍在继续,这种细菌被用来剖析宿主对疾病过程的影响,作为一个强大的细胞生物学模型,并更好地了解人类对共生细菌的影响。在这里,我们回顾了主要的发现,即,拼图碎片,用肺炎链球菌制成的,多年来,他们走到一起,塑造了我们对这种细菌生物学的理解,以及医学和现代分子生物学的实践。
    The major human pathogen Streptococcus pneumoniae has been the subject of intensive clinical and basic scientific study for over 140 years. In multiple instances, these efforts have resulted in major breakthroughs in our understanding of basic biological principles as well as fundamental tenets of bacterial pathogenesis, immunology, vaccinology, and genetics. Discoveries made with S. pneumoniae have led to multiple major public health victories that have saved the lives of millions. Studies on S. pneumoniae continue today, where this bacterium is being used to dissect the impact of the host on disease processes, as a powerful cell biology model, and to better understand the consequence of human actions on commensal bacteria at the population level. Herein we review the major findings, i.e., puzzle pieces, made with S. pneumoniae and how, over the years, they have come together to shape our understanding of this bacterium\'s biology and the practice of medicine and modern molecular biology.
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  • 文章类型: Journal Article
    目前,数百万种药物及其许可证已经过期或将在不久的将来到期。因此,现有USFDA批准的药物可用于治疗另一种疾病。上述方法属于药物再利用的范畴。药物再利用是寻找现有USFDA批准药物的新应用的替代策略。鉴定新的药物靶标是药物再利用的方法之一,以便可以确定USFDA批准的药物的新治疗应用。计算生物学和生物信息学的最新进展可以帮助加快这一进程。与发现全新的药物分子相比,药物再利用可以节省时间和资源。在这一章中,我们探索了发现新药物靶点的不同策略及其用于药物再利用以治疗疾病的用途。
    Currently, millions of drugs and their licence have been expired or will be expiring in near future. Therefore, existing USFDA approved drug can be used for treating another disease. The above-mentioned approach falls under the category of drug repurposing. Drug repurposing is an alternative strategy for finding new applications of existing USFDA approved drugs. Identification of a novel drug target is one of the go to way for drug repurposing so that new therapeutic applications of USFDA approved drugs could be determined. Recent advances in computational biology and bioinformatics can help to accelerate the same. Drug repurposing can save time and resource as compared to discovery of an entirely new drug molecule. In this chapter, we explore different strategies for discovery of a novel drug target and its uses for drug repurposing to treat disease.
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  • 文章类型: Journal Article
    物联网(IoT)包括数十亿个传感器和执行器(我们称为IoT设备),它们从物理世界中收集数据,并通过互联网将其发送到IoT应用程序,以提供智能IoT服务和产品。部署,管理,和维护物联网设备以单独使用物联网应用程序是低效的,并且涉及巨大的成本和精力,往往超过收益。另一方面,使大量物联网应用程序能够共享可用的第三方物联网设备,由各种物联网设备提供商独立部署和维护,降低物联网应用开发成本,时间,和努力。为了实现正的成本/收益比,有必要通过提供有效的物联网设备发现来支持全球第三方物联网设备的共享,使用,物联网应用和第三方物联网设备之间的支付。全球物联网设备共享的解决方案必须如下:(1)可扩展以支持大量第三方物联网设备,(2)可互操作,以处理物联网设备及其数据的异构性,(3)物联网拥有,即,不属于特定的个人或组织。本文调查了支持发现的现有技术,使用,并为第三方物联网设备付费。为了确保这项调查是全面的,本文介绍了我们的方法论,这是受系统文献网络分析(SLNA)的启发,将系统文献综述(SLR)方法与引文网络分析(CNA)相结合。最后,本文概述了实现全球物联网设备共享的新研究的研究空白和方向。
    The Internet of Things (IoT) includes billions of sensors and actuators (which we refer to as IoT devices) that harvest data from the physical world and send it via the Internet to IoT applications to provide smart IoT services and products. Deploying, managing, and maintaining IoT devices for the exclusive use of an individual IoT application is inefficient and involves significant costs and effort that often outweigh the benefits. On the other hand, enabling large numbers of IoT applications to share available third-party IoT devices, which are deployed and maintained independently by a variety of IoT device providers, reduces IoT application development costs, time, and effort. To achieve a positive cost/benefit ratio, there is a need to support the sharing of third-party IoT devices globally by providing effective IoT device discovery, use, and pay between IoT applications and third-party IoT devices. A solution for global IoT device sharing must be the following: (1) scalable to support a vast number of third-party IoT devices, (2) interoperable to deal with the heterogeneity of IoT devices and their data, and (3) IoT-owned, i.e., not owned by a specific individual or organization. This paper surveys existing techniques that support discovering, using, and paying for third-party IoT devices. To ensure that this survey is comprehensive, this paper presents our methodology, which is inspired by Systematic Literature Network Analysis (SLNA), combining the Systematic Literature Review (SLR) methodology with Citation Network Analysis (CNA). Finally, this paper outlines the research gaps and directions for novel research to realize global IoT device sharing.
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  • 文章类型: Journal Article
    背景:医疗保健中的决策越来越复杂;特别是在信息密度很高的医院环境中,例如,急诊科,肿瘤科,还有精神科.本研究旨在从记录的数据中发现决策,以改善决策过程。
    方法:选择设计科学研究方法(DSRM)来设计用于发现和可视化决策的工件(算法)。解释了DSRM的不同活动,从问题的定义到工件的评估。在设计和开发活动中,算法本身被创建。在论证和评估活动中,该算法用真实的合成数据集进行了测试。
    结果:结果显示了用于发现和可视化决策的算法的设计和仿真。模糊分类器算法适用于(1)从决策日志中发现决策和(2)使用决策模型和符号标准可视化决策。
    结论:在本文中,我们表明,可以从决策日志中发现决策,并将其可视化,以改善医疗保健专业人员的决策过程或支持方案和指南的定期评估.
    BACKGROUND: Decision-making in healthcare is increasingly complex; notably in hospital environments where the information density is high, e.g., emergency departments, oncology departments, and psychiatry departments. This study aims to discover decisions from logged data to improve the decision-making process.
    METHODS: The Design Science Research Methodology (DSRM) was chosen to design an artifact (algorithm) for the discovery and visualization of decisions. The DSRM\'s different activities are explained, from the definition of the problem to the evaluation of the artifact. During the design and development activities, the algorithm itself is created. During the demonstration and evaluation activities, the algorithm was tested with an authentic synthetic dataset.
    RESULTS: The results show the design and simulation of an algorithm for the discovery and visualization of decisions. A fuzzy classifier algorithm was adapted for (1) discovering decisions from a decision log and (2) visualizing the decisions using the Decision Model and Notation standard.
    CONCLUSIONS: In this paper, we show that decisions can be discovered from a decision log and visualized for the improvement of the decision-making process of healthcare professionals or to support the periodic evaluation of protocols and guidelines.
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