Consensus approach

共识方法
  • 文章类型: Journal Article
    识别干预的核心组件对于衡量干预是否以保真度实施和/或修改是必不可少的;它通常是一个多阶段过程,从第一阶段开始,确定一组逐渐完善的核心组件。识别初始核心组件的第一阶段尚未得到彻底检查。如果没有一套明确的步骤,干预措施可能在确定其初始核心组成部分的严密性和思路上有所不同。我们设计了CORE(相关要素共识)方法来综合干预开发者/实施者的意见,以确定干预的初始核心组件,特别适用于创新干预措施。我们将CORE应用于基于同行的干预措施,以帮助退伍军人在监禁后重返社区。我们的CORE应用程序涉及四个干预开发人员/实施者和两个主持人,以促进七个CORE步骤。我们的CORE应用程序有两次迭代,从步骤1(个人核心组成部分建议)到步骤7(小组讨论达成共识),然后重复步骤4(组件定义的合并)到步骤7。这导致了18个共识达成的基于同行的干预的初始核心组成部分,低于开发人员/实施者在步骤1中单独建议的60。即使不存在,移除的组件也被认为不会威胁干预的有效性。CORE有助于填补关于识别干预措施的初始核心组件的关键空白(以便随后可以改进识别的组件),通过提供具体步骤来综合干预的开发人员/实施者的知识。未来的研究应该检查CORE在各种干预措施和实施设置中的效用。
    Identifying an intervention\'s core components is indispensable to gauging whether an intervention is implemented with fidelity and/or is modified; it is often a multi-stage process, starting with the first stage of identifying an initial set of core components that are gradually refined. This first stage of identifying initial core components has not been thoroughly examined. Without a clear set of steps to follow, interventions may vary in the rigor and thought applied to identifying their initial core components. We devised the CORE (Consensus on Relevant Elements) approach to synthesize opinions of intervention developers/implementers to identify an intervention\'s initial core components, particularly applicable to innovative interventions. We applied CORE to a peer-based intervention that aids military veterans with post-incarceration community reintegration. Our CORE application involved four intervention developers/implementers and two moderators to facilitate the seven CORE steps. Our CORE application had two iterations, moving through Steps 1 (individual core component suggestions) through 7 (group discussion for consensus), then repeating Steps 4 (consolidation of component definitions) through 7. This resulted in 18 consensus-reached initial core components of the peer-based intervention, down from the 60 that the developers/implementers individually suggested at Step 1. Removed components were deemed to not threaten the intervention\'s effectiveness even if absent. CORE contributes to filling a critical gap regarding identifying an intervention\'s initial core components (so that the identified components can be subsequently refined), by providing concrete steps for synthesizing the knowledge of an intervention\'s developers/implementers. Future research should examine CORE\'s utility across various interventions and implementation settings.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    As the number of introduced species keeps increasing unabatedly, identifying and prioritising current and potential Invasive Alien Species (IAS) has become essential to manage them. Horizon Scanning (HS), defined as an exploration of potential threats, is considered a fundamental component of IAS management. By combining scientific knowledge on taxa with expert opinion, we identified the most relevant aquatic IAS in the Iberian Peninsula, i.e., those with the greatest geographic extent (or probability of introduction), severe ecological, economic and human health impacts, greatest difficulty and acceptability of management. We highlighted the 126 most relevant IAS already present in Iberian inland waters (i.e., Concern list) and 89 with a high probability of being introduced in the near future (i.e., Alert list), of which 24 and 10 IAS, respectively, were considered as a management priority after receiving the highest scores in the expert assessment (i.e., top-ranked IAS). In both lists, aquatic IAS belonging to the four thematic groups (plants, freshwater invertebrates, estuarine invertebrates, and vertebrates) were identified as having been introduced through various pathways from different regions of the world and classified according to their main functional feeding groups. Also, the latest update of the list of IAS of Union concern pursuant to Regulation (EU) No 1143/2014 includes only 12 top-ranked IAS identified for the Iberian Peninsula, while the national lists incorporate the vast majority of them. This fact underlines the great importance of taxa prioritisation exercises at biogeographical scales as a step prior to risk analyses and their inclusion in national lists. This HS provides a robust assessment and a cost-effective strategy for decision-makers and stakeholders to prioritise the use of limited resources for IAS prevention and management. Although applied at a transnational level in a European biodiversity hotspot, this approach is designed for potential application at any geographical or administrative scale, including the continental one.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    Affitins构成了一类属于Sul7d家族的小蛋白,which,在微生物中,结合DNA防止其变性。由于它们的稳定性和小尺寸(长度为60-66个残基),它们被认为是工程的理想候选者,现在已经使用了10多年,对于不同的应用。能够识别特定靶标的突变体的个体化并不意味着知道两种蛋白质之间的结合几何形状。然而,它的识别无疑是重要的,但并不总是可以通过实验获得。出于这个原因,诸如蛋白质-蛋白质对接之类的计算方法可能有助于复合物的初始结构表征。这种方法,它产生了根据结合分数排序的数十个假定的结合几何形状,需要遵循进一步的重新排序程序,以找到最合理的程序。在本论文中,我们使用服务器ClusPro生成具有不同蛋白质伴侣的affitin对接模型,这些蛋白质伴侣的实验结构可在蛋白质数据库中获得。然后,我们应用两个协议来重新排序对接模型。第一个通过分子动力学模拟研究它们的稳定性;第二个,相反,将对接模型与局部耦合能量矩阵方法预测的相互作用残基进行比较。结果表明,处理重排序问题的更有效方法是将两个协议给出的信息一起考虑,即采用共识方法。
    Affitins constitute a class of small proteins belonging to Sul7d family, which, in microorganisms such as Sulfolobus acidocaldarius, bind DNA preventing its denaturation. Thanks to their stability and small size (60-66 residues in length) they have been considered as ideal candidates for engineering and have been used for more than 10 years now, for different applications. The individuation of a mutant able to recognize a specific target does not imply the knowledge of the binding geometry between the two proteins. However, its identification is of undoubted importance but not always experimentally accessible. For this reason, computational approaches such as protein-protein docking can be helpful for an initial structural characterization of the complex. This method, which produces tens of putative binding geometries ordered according to a binding score, needs to be followed by a further reranking procedure for finding the most plausible one. In the present paper, we use the server ClusPro for generating docking models of affitins with different protein partners whose experimental structures are available in the Protein Data Bank. Then, we apply two protocols for reranking the docking models. The first one investigates their stability by means of Molecular Dynamics simulations; the second one, instead, compares the docking models with the interacting residues predicted by the Matrix of Local Coupling Energies method. Results show that the more efficient way to deal with the reranking problem is to consider the information given by the two protocols together, i.e. employing a consensus approach.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    为报告视网膜血管疾病的OCT血管造影(OCTA)发现制定共识命名法(例如,糖尿病视网膜病变,视网膜静脉阻塞)由国际专家。
    基于Delphi的调查。
    25位视网膜血管疾病和OCTA成像专家。
    使用了共识发展的德尔菲法,包括两轮在线问卷,随后进行了面对面的会议。选择25位视网膜血管疾病和视网膜OCTA成像专家组成Delphi研究组视网膜血管疾病的OCTA命名法。共识的4个主要领域是:“广域(WF)”OCTA参数的定义,在常规和WF-OCTA上测量血管流量减少,OCTA发现的命名法,和OCTA在视网膜血管疾病管理和分期中的应用。研究终点由每个问题的共识程度来定义:“强共识”定义为≥85%的一致性,“共识”为80%至84%,“接近共识”为70%至79%。
    视网膜血管疾病中OCTA命名法的共识和接近共识。
    已达成共识,即WF-OCTA成像中流量百分比的有意义变化应为流量信号绝对成像面积的增加或减少≥30%,并且WF-OCTA减少的流量信号的“大面积”也应定义为绝对成像面积的≥30%。新血管和视网膜内微血管异常的存在,中央凹无血管区参数,“无流动区域”的存在和数量,对于糖尿病性视网膜病变的分期和分类,应增加对不同视网膜层血管密度的评估。绝对成像面积的流量减少≥30%应定义缺血性视网膜中央静脉阻塞。其他几个项目不符合协商一致要求,或在最后一轮讨论中被拒绝。
    本研究为报告视网膜血管疾病的OCTA发现提供了国际共识建议。这可能有助于提高临床和临床试验的可解释性和描述性。这些设置中的进一步验证是有保证的,并且正在进行中。正在继续努力解决悬而未决的问题。
    To develop a consensus nomenclature for reporting OCT angiography (OCTA) findings in retinal vascular disease (e.g., diabetic retinopathy, retinal vein occlusion) by international experts.
    Delphi-based survey.
    Twenty-five retinal vascular disease and OCTA imaging experts.
    A Delphi method of consensus development was used, comprising 2 rounds of online questionnaires, followed by a face-to-face meeting conducted virtually. Twenty-five experts in retinal vascular disease and retinal OCTA imaging were selected to constitute the OCTA Nomenclature in Delphi Study Group for retinal vascular disease. The 4 main areas of consensus were: definition of the parameters of \"wide-field (WF)\" OCTA, measurement of decreased vascular flow on conventional and WF-OCTA, nomenclature of OCTA findings, and OCTA in retinal vascular disease management and staging. The study end point was defined by the degree of consensus for each question: \"strong consensus\" was defined as ≥85% agreement, \"consensus\" as 80% to 84%, and \"near consensus\" as 70% to 79%.
    Consensus and near consensus on OCTA nomenclature in retinal vascular disease.
    A consensus was reached that a meaningful change in percentage of flow on WF-OCTA imaging should be an increase or decrease ≥30% of the absolute imaged area of flow signal and that a \"large area\" of WF-OCTA reduced flow signal should also be defined as ≥30% of the absolute imaged area. The presence of new vessels and intraretinal microvascular abnormalities, the foveal avascular zone parameters, the presence and amount of \"no-flow areas,\" and the assessment of vessel density in various retinal layers should be added for the staging and classification of diabetic retinopathy. Decreased flow ≥30% of the absolute imaged area should define an ischemic central retinal vein occlusion. Several other items did not meet consensus requirements or were rejected in the final discussion round.
    This study provides international consensus recommendations for reporting OCTA findings in retinal vascular disease, which may help to improve the interpretability and description in clinic and clinical trials. Further validation in these settings is warranted and ongoing. Efforts are continuing to address unresolved questions.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    背景:当前对脑脊液(CSF)生物标志物进行定量以辅助诊断阿尔茨海默病(AD)的实践因中心而异。对于相同的生化特征,对结果的解释和报告可能会有所不同,这可能会导致误解,并引发有关测试可交换性的问题。
    方法:我们从全球40个中心获得了(预)分析方案和样本报告的描述。共识方法使我们能够提出与患者中观察到的不同CSF生物标志物谱相对应的协调评论。
    结果:中心之间的(预)分析程序相似。截止定义和报告评论存在相当大的异质性。因此,我们通过共识确定并选择了关于AD诊断背景下CSF生物标志物解释的最准确和信息丰富的评论。
    结论:这是全球范围内涉及AD生化诊断的专业实验室首次提出统一的报告。
    The current practice of quantifying cerebrospinal fluid (CSF) biomarkers as an aid in the diagnosis of Alzheimer\'s disease (AD) varies from center to center. For a same biochemical profile, interpretation and reporting of results may differ, which can lead to misunderstandings and raises questions about the commutability of tests.
    We obtained a description of (pre-)analytical protocols and sample reports from 40 centers worldwide. A consensus approach allowed us to propose harmonized comments corresponding to the different CSF biomarker profiles observed in patients.
    The (pre-)analytical procedures were similar between centers. There was considerable heterogeneity in cutoff definitions and report comments. We therefore identified and selected by consensus the most accurate and informative comments regarding the interpretation of CSF biomarkers in the context of AD diagnosis.
    This is the first time that harmonized reports are proposed across worldwide specialized laboratories involved in the biochemical diagnosis of AD.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    Gene regulatory network (GRN) construction involves various steps of complex computational steps. This step-by-step procedure requires prior knowledge of programming languages such as R. Development of a web tool may reduce this complexity in the analysis steps which can be easy accessible for the user. In this study, a web tool for constructing consensus GRN by combining the outcomes obtained from four methods, namely, correlation, principal component regression, partial least square, and ridge regression, has been developed. We have designed the web tool with an interactive and user-friendly web page using the php programming language. We have used R script for the analysis steps which run in the background of the user interface. Users can upload gene expression data for constructing consensus GRN. The output obtained from analysis will be available in downloadable form in the result window of the web tool.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:肌酐的酶定量已成为临床评估肾功能的重要方法。虽然肌酸酶(CR)经常用于此目的,其差的热稳定性严重限制了工业应用。在这里,我们报道了一种来自粪产碱杆菌(afCR)的新型肌酸酶,具有较高的催化活性和较低的KM值,比目前使用的肌酸酶。此外,我们开发了一种无偏系统发育共识方法来提高afCR的热稳定性。
    结果:我们应用了一种无偏倚的系统发育共有方法,从24个肌酸酶家族同源物中鉴定了59个候选共有残基,用于筛选具有改善的热稳定性的afCR突变体。选择afCR的21个氨基酸进行诱变,与亲本酶(afCR-M0)相比,其中11个显示出改善的热稳定性。连续筛选中的单点突变组合产生了四重突变体D17V/T199S/L6P/T251C(M4-2),其在57°C下的半衰期增强了约1700倍,T5015比afCR-M0高4.2°C。该突变体保留了与afCR-M0相当的催化活性,因此显示出在肌酐检测中应用的强大前景。结构同源性建模揭示了与单个突变相关的广泛的潜在分子相互作用,这些突变有助于改善afCR热稳定性。
    结论:这项研究的结果清楚地表明,用于改善afCR中热稳定性的非偏向系统发育共识设计在改善更多酶的热稳定性方面是有效且有希望的。
    BACKGROUND: Enzymatic quantification of creatinine has become an essential method for clinical evaluation of renal function. Although creatinase (CR) is frequently used for this purpose, its poor thermostability severely limits industrial applications. Herein, we report a novel creatinase from Alcaligenes faecalis (afCR) with higher catalytic activity and lower KM value, than currently used creatinases. Furthermore, we developed a non-biased phylogenetic consensus method to improve the thermostability of afCR.
    RESULTS: We applied a non-biased phylogenetic consensus method to identify 59 candidate consensus residues from 24 creatinase family homologs for screening afCR mutants with improved thermostability. Twenty-one amino acids of afCR were selected to mutagenesis and 11 of them exhibited improved thermostability compared to the parent enzyme (afCR-M0). Combination of single-site mutations in sequential screens resulted in a quadruple mutant D17V/T199S/L6P/T251C (M4-2) which showed ~ 1700-fold enhanced half-life at 57 °C and a 4.2 °C higher T5015 than that of afCR-M0. The mutant retained catalytic activity equivalent to afCR-M0, and thus showed strong promise for application in creatinine detection. Structural homology modeling revealed a wide range of potential molecular interactions associated with individual mutations that contributed to improving afCR thermostability.
    CONCLUSIONS: Results of this study clearly demonstrated that the non-biased-phylogenetic consensus design for improvement of thermostability in afCR is effective and promising in improving the thermostability of more enzymes.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

  • 文章类型: Journal Article
    The geological conceptual model is considered a major source of uncertainty in groundwater modelling and well capture zone delineation. However, how to account for it in groundwater policy and management remains largely unresolved. We explore the drivers and barriers to account for geological conceptual uncertainty in groundwater protection amongst decision makers and stakeholders in an agricultural groundwater catchment in Denmark. Using a groundwater model, we analyze the impact of alternative geological conceptual models on capture zone delineation. A focus area, which covers multiple modelled capture zones, is defined and considered for groundwater protection. Model uncertainty and focus area are discussed at two workshops, one with local and national stakeholders and another with local farmers. The drivers to account for model uncertainty include: i) safer drinking water protection by considering a larger area for protection than identified from a single geological model; and ii) stability over time of management plans. The main barrier is the additional cost to the stakeholders for the protection of a larger area. We conclude that integration of geological uncertainty in groundwater protection plans may be improved through: i) better communication between the research community and the national water authority; ii) more constraining guidelines regarding the estimation of geological uncertainty; and iii) the development of a framework ensuring knowledge transfer to the local water authorities and detailing how to integrate uncertainty in management plans.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

  • 文章类型: Journal Article
    The European Union (EU) has recently published its first list of invasive alien species (IAS) of EU concern to which current legislation must apply. The list comprises species known to pose great threats to biodiversity and needs to be maintained and updated. Horizon scanning is seen as critical to identify the most threatening potential IAS that do not yet occur in Europe to be subsequently risk assessed for future listing. Accordingly, we present a systematic consensus horizon scanning procedure to derive a ranked list of potential IAS likely to arrive, establish, spread and have an impact on biodiversity in the region over the next decade. The approach is unique in the continental scale examined, the breadth of taxonomic groups and environments considered, and the methods and data sources used. International experts were brought together to address five broad thematic groups of potential IAS. For each thematic group the experts first independently assembled lists of potential IAS not yet established in the EU but potentially threatening biodiversity if introduced. Experts were asked to score the species within their thematic group for their separate likelihoods of i) arrival, ii) establishment, iii) spread, and iv) magnitude of the potential negative impact on biodiversity within the EU. Experts then convened for a 2-day workshop applying consensus methods to compile a ranked list of potential IAS. From an initial working list of 329 species, a list of 66 species not yet established in the EU that were considered to be very high (8 species), high (40 species) or medium (18 species) risk species was derived. Here, we present these species highlighting the potential negative impacts and the most likely biogeographic regions to be affected by these potential IAS.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Sci-hub)

       PDF(Pubmed)

  • 文章类型: Journal Article
    Cancer immunoinformatics have led to new directions towards vaccine design from predicted potential epitope candidates, which are able to stimulate the correct cellular or humoral immune responses. They were employed to accomplish an advanced vaccine design through reverse vaccinology by replacing the whole organisms. In this review, computational tools play an essential role in evaluating multiple proteomes to identify and select the potential targeted epitopes or combinations of distinct epitopes, so that candidates may afford a rationale design competent for obtaining suitable cytotoxic T lymphocytes (CTL) or B cell-mediated immune responses. This review is a complete collection of the most beneficial online and user-friendly immunological tools, servers, and databases for the design and development of the peptide vaccine. The mechanism of major histocompatability (MHC)-restricted peptide presentation and how these tools support the vaccine development are also presented. The human papillomavirus (HPV) is taken as a model microbial strain for peptide vaccine design and its sensitization against HPV-induced cervical cancer is discussed.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

公众号