detection

检测
  • 文章类型: Journal Article
    酒精性肝病(ALD)是长期大量饮酒引起的慢性中毒性肝损伤。由于发病率的增加,ALD正在成为重要的医学任务之一。许多研究表明,大量饮酒导致肝脏损伤的主要机制可能与抗氧化应激有关。作为一种重要的抗氧化剂,半胱氨酸(Cys)参与维持肝脏的正常氧化还原平衡和解毒代谢功能,这可能与ALD的发病机制密切相关。因此,有必要开发一种简单的非侵入性方法来快速监测肝脏中的Cys。因此,开发了近红外(NIR)荧光探针DCI-Ac-Cys,该探针经过Cys触发的级联反应形成香豆素荧光团。使用DCI-Ac-Cys,在ALD小鼠的肝脏中观察到Cys降低。重要的是,在服用水飞蓟宾和姜黄素的ALD小鼠肝脏中监测不同水平的Cys,表明对ALD的优异治疗效果。本研究为ALD的准确诊断以及水飞蓟宾和姜黄素治疗ALD的药效学评价提供了重要参考。并支持ALD发病机制的新思路。
    Alcoholic liver disease (ALD) is a chronic toxic liver injury caused by long-term heavy drinking. Due to the increasing incidence, ALD is becoming one of important medical tasks. Many studies have shown that the main mechanism of liver damage caused by large amounts of alcohol may be related to antioxidant stress. As an important antioxidant, cysteine (Cys) is involved in maintaining the normal redox balance and detoxifying metabolic function of the liver, which may be closely related to the pathogenesis of ALD. Therefore, it is necessary to develop a simple non-invasive method for rapid monitoring of Cys in liver. Thus, a near-infrared (NIR) fluorescent probe DCI-Ac-Cys which undergoes Cys triggered cascade reaction to form coumarin fluorophore is developed. Using the DCI-Ac-Cys, decreased Cys was observed in the liver of ALD mice. Importantly, different levels of Cys were monitored in the livers of ALD mice taking silybin and curcumin with the antioxidant effects, indicating the excellent therapeutic effect on ALD. This study provides the important references for the accurate diagnosis of ALD and the pharmacodynamic evaluation of silybin and curcumin in the treatment of ALD, and support new ideas for the pathogenesis of ALD.
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  • 文章类型: Journal Article
    高动能离子迁移谱(HiKE-IMS)是一种在一秒钟内快速可靠地检测低至ppbV水平的痕量化合物的技术。与在环境压力下运行并在低电场下提供离子迁移率的经典IMS相比,HiKE-IMS还可以在高降低的电场强度下提供离子迁移率的分析物特异性场依赖性和碎裂模式。通过改变减小的电场强度获得的关于分析物的附加信息可以有助于可靠的检测。此外,在10-40mbar的低操作压力下,离子分子反应的数量减少,反应时间更短,减少了可能导致假阴性的竞争性离子分子反应的影响。在这项工作中,我们使用HIKE-IMS分析苯基-2-丙酮(P2P)和其他用于合成甲基苯丙胺和苯丙胺的前体化学品.结果表明,前体化学物质在HiKE-IMS中表现出不同的行为。一些前体形成单一重要的离子物种,而其他人则容易形成碎片模式。然而,所有药物前体都可以相互区分,来自反应物离子和干扰化合物。特别是,场依赖性离子迁移率作为额外的分离维度有助于识别,有可能减少现场应用中的误报数量。此外,对检获的非法P2P样本的分析表明,尽管真实样本的顶部空间存在复杂的背景,但即使低水平的P2P也可以检测到。
    High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) is a technique for rapid and reliable detection of trace compounds down to ppbV-levels within one second. Compared to classical IMS operating at ambient pressure and providing the ion mobility at low electric fields, HiKE-IMS can also provide the analyte-specific field dependence of the ion mobility and a fragmentation pattern at high reduced electric field strengths. The additional information about the analyte obtained by varying the reduced electric field strength can contribute to reliable detection. Furthermore, the reduced number of ion-molecule reactions at the low operating pressure of 10 - 40 mbar and the shorter reaction times reduce the impact of competing ion-molecule reactions that can cause false negatives. In this work, we employ HiKE-IMS for the analysis of phenyl-2-propanone (P2P) and other precursor chemicals used for synthesis of methamphetamine and amphetamine. The results show that the precursor chemicals exhibit different behavior in HiKE-IMS. Some precursors form a single significant ion species, while others readily form a fragmentation pattern. Nevertheless, all drug precursors can be distinguished from each other, from the reactant ions and from interfering compounds. In particular, the field-dependent ion mobility as an additional separation dimension aids identification, potentially reducing the number of false positive alarms in field applications. Furthermore, the analysis of a seized illicit P2P sample shows that even low levels of P2P can be detected despite the complex background present in the headspace of real samples.
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  • 文章类型: Journal Article
    在过去的十年中,对独生病毒仅通过粉虱烟粉虱(Gennadius)传播的传统理解已经随着某些独生病毒中种子传播的发现而发生了变化。我们调查了葫芦叶皱病毒(CuLCrV)的种子传播性,一种两体的七叶树病毒,最近在美国东南部成为黄南瓜(CucurbitapepoL.)生产的严重制约因素。我们在受感染南瓜的雄性和雌性花组织中发现高浓度的CuLCrV,包括花粉和胚珠。病毒浸润了果实组织,包括内果皮和真菌,它们在解剖学上位于种子附近。在种子中,在没有血管连接的胚乳和胚胎中检测到CuLCrV,除了种皮。在胚根中检测到病毒,plumule,子叶,和从受感染水果收集的种子长出的幼苗的真叶。在进行的成长测试中,CuLCrV感染范围为后代植物的17-56%。为了确保部分病毒基因组片段不会被误认为是病毒的复制形式,我们进行了RCA-PCR,并从种子组织中扩增了CuLCrV的完整DNA-A和DNA-B,幼苗,CuLCrV感染南瓜的后代植物。从后代植物中回收了CuLCrV的几乎完整的DNA-A和DNA-B序列,进一步验证我们的发现。我们的结果表明,CuLCrV可以从黄南瓜的营养组织转移到生殖组织,坚持在种子中,随后在后代植物中诱导感染,确认其种子传播能力。
    The traditional understanding of begomovirus transmission exclusively through the whitefly Bemisia tabaci (Gennadius) has shifted with findings of seed transmission in some begomoviruses over the last decade. We investigated the seed transmissibility of cucurbit leaf crumple virus (CuLCrV), a bipartite begomovirus that has recently emerged as a severe constraint for yellow squash (Cucurbita pepo L.) production in the southeastern United States. We found high concentration of CuLCrV in male and female flower tissues of infected squash, including pollen and ovules. The virus infiltrated the fruit tissues including the endocarp and funiculus, which are anatomically positioned adjacent to the seeds. In seeds, CuLCrV was detected in the endosperm and embryo where there are no vascular connections, in addition to the seed coat. The virus was detected in the radicle, plumule, cotyledonary leaves, and true leaves of seedlings grown from seeds collected from infected fruits. In the grow-out test conducted, CuLCrV infections ranged from 17-56% of the progeny plants. To ensure that partial viral genome fragments were not being mistaken for replicative forms of the virus, we performed RCA ̶ PCR and amplified complete DNA-A and DNA-B of CuLCrV from seed tissues, seedlings, progeny plants of CuLCrV infected squash. Near complete DNA-A and DNA-B sequences of CuLCrV were recovered from a progeny plant, further validating our findings. Our results demonstrate that CuLCrV can translocate from vegetative to reproductive tissues of yellow squash, persist within the seeds, and subsequently induce infection in progeny plants, confirming its capacity for seed transmission.
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  • 文章类型: Journal Article
    今天,语音合成是我们日常生活的一部分,在世界各地的计算机中。中央库尔德语音语料库构建是语音语料库,是开发语音系统的主要数据源。仍然有两个主要问题阻止他们实现最佳性能,缺乏培训和分析的效率,以及建模的困难。库尔德语中文本到语音的最大障碍是缺乏文本和语音识别工具,而在不同的国家,大约有3000万人说库尔德语。为了解决这个问题,这个语料库引入了大量的库尔德语文本到语音数据集(KTTS,Gigant),包括中央库尔德方言的发音词典和语音语料库。包括各种主题来记录这些句子。这些句子是由一名配音员的库尔德男子在语音录音室中录制的。语音语料库的目标是创建一组句子,以准确反映有关中央库尔德方言的真实数据。音频和视频源的组合用于记录12个文档主题的6,078个句子。它们是在受控环境中使用没有噪音的麦克风录制的。总记录持续时间为13.63h。记录的句子在\"中。wav\"格式。
    Today, speech synthesis is a part of our daily lives in computers all around the world. Central Kurdish Speech Corpus Construction is a speech corpus that is a primary data source for developing a speech system. There are still two main issues that prevent them from achieving the best possible performance, the lack of efficiency in training and analysis, and the difficulty in modelling. The biggest obstacle against text-to-speech in the Kurdish language is that there is a lack of text and speech recognition tools compounded by the fact that around 30 million people speak the Kurdish language in different countries. To address this issue, this corpus introduced a large vocabulary of Kurdish Text-to-Speech Dataset (KTTS, Gigant), including a pronunciation lexicon and speech corpus for the Central Kurdish dialect. A variety of subjects is comprised to record these sentences. The sentences are recorded in a voice recording studio by a Kurdish man who is a dubber. The goal of the speech corpus is to create a collection of sentences that accurately reflect the real data about the Central Kurdish dialect. A combination of audio and visual sources is used to record the 6,078 sentences of 12 document topics. They were recorded in a controlled environment using microphones that were not noisy. The total record duration is 13.63 h. The recorded sentences are in the \".wav\" format.
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  • 文章类型: Journal Article
    腹泻是第三世界的重要健康问题。确定引起腹泻的病原体对于预防和控制这种疾病的措施至关重要。苏丹也很少有腹泻的报道。我们的研究旨在确定特定原生动物病原体(溶组织内阿米巴,微小隐孢子虫。,和贾第虫)在喀土穆的儿童中,苏丹。
    我们对2014年4月至12月间因急性腹泻住院的5岁以下儿童进行了横断面调查。收集腹泻粪便样本,C.parvum,使用多重实时PCR检查贾第鞭毛虫。
    本研究纳入了4137名急性腹泻儿童;腹泻患病率较高的是≤2岁以下(403,92.2%)。本研究中的男女比例为1:1.7。155例(35.5%)感染肠道寄生虫,合并感染16例(10.3%)。贾第鞭毛虫(18.8%)和小梭菌(15.8%)是最常见的寄生虫,其次是溶组织大肠杆菌(0.9)。2岁以下组(92.3%)和2-4岁组(7.3%)的寄生虫感染率最高,最低。男孩感染率(67.1%)高于女孩(32.9%)。雨季(8月至12月)原生动物感染发生率较高(92.2%),与旱季(4月至6月)相对应。(7.8%)。
    我们目前的研究表明,在喀土穆地区腹泻儿童中,贾第鞭毛虫和小梭菌的高患病率,以及多重实时方法在揭示病原原虫病原体方面的有用性。我们的结果强调了制定干预措施和控制策略以应对该地区儿童寄生虫性腹泻的必要性。
    UNASSIGNED: Diarrhea is a significant health problem in the Third World. Identification of the pathogen that causes diarrhea is vital for measures to prevent and control this disease. There are also very few reports of diarrhea in Sudan. Our study aimed to determine the Prevalence of specific protozoan pathogens ( Entamoeba histolytica, Cryptosporidium parvum., and Giardia spp) in children in Khartoum, Sudan.
    UNASSIGNED: We conducted a cross-sectional survey among children under five years of age who were hospitalized with acute diarrhea between April and December 2014. Diarrheal stool samples were collected and E. histolytica, C. parvum, and Giardia spp were examined using multiplex real-time PCR.
    UNASSIGNED: Four hundred and thirty-seven children with acute diarrheawere included in this study; the higher Prevalence of diarrhea was in the age less than ≤ 2 years old (403,92.2%). The male-to-female ratio in this study was 1:1.7. infection with intestinal parasite was found in 155 (35.5%) cases, and co-infection was detected in 16 (10.3%) cases. Giardia spp(18.8%) and C. parvum (15.8 %) were the most frequently identified parasites, followed by E. histolytica (0.9). The parasite infection rate was highest and lowest in the under 2-year-old group (92.3%) and the 2-4-year-old group (7.3%). The infection rate was higher in boys (67.1%) than in girls (32.9%). The incidence of protozoan infection was higher in the rainy season (August to December) (92.2%), corresponding with that in the dry Season (April to June). (7.8%).
    UNASSIGNED: Our present study demonstrated the high prevalence of Giardia spp and C. parvum in children with diarrhea in the Khartoum region and the usefulness of the multiplex real-time method in disclosing pathogenic protozoal agents. Our result highlighted the necessity of developing intervention measurement and control strategies to deal with childhood parasitic diarrhea in this region.
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  • 文章类型: Journal Article
    慢性肾脏病(CKD)是一个全球性的公共卫生问题,具有重大的人类和经济后果。尽管临床指南取得了进展,分类系统和循证治疗,CKD仍未被诊断和治疗不足,预计到2040年将成为全球第五大死亡原因。这篇综述旨在确定有效检测的障碍和促成因素,诊断,自2002年推出肾脏病结果质量倡议(KDOQI)分类以来,CKD的披露和管理,倡导针对更新后的肾脏病:改善全球结果(KDIGO)2024临床指南采用新的方法.过去二十年来,英国CKD护理的改善是国际上采用KDIGO分类系统的基础。混合采用循证治疗和研究为临床指南和政策提供了依据。临床和学术界对证据的解释引发了关于如何最好地实施这些证据的重大辩论,这些证据经常推动并令人沮丧地阻碍了CKD护理的进展。有效CKD护理的关键推动者包括临床分类系统(KDIGO),循证治疗,电子健康记录工具,经济激励式护理,医学教育和政策变化。有效CKD护理的障碍是广泛的;关键障碍包括临床医生对过度诊断的担忧,初级保健缺乏经济激励,复杂的临床指南,在多发性疾病的背景下管理CKD,初级保健的官僚负担,钠-葡萄糖协同转运蛋白-2抑制剂(SGLT2i)药物利用不足,CKD医学教育不足,最近-在COVID-19大流行期间和之后,常规CKD护理持续中断。英国初级保健的未来CKD护理必须借鉴过去二十年的经验教训。做出改变,在规模上逐步改善CKD护理需要一种新的方法来解决检测的关键障碍,诊断,跨越传统医疗保健边界的披露和管理,社会关怀,和公共卫生。提高了初级保健中的编码精度,增加SGLT2i药物的使用,和基于风险的护理提供有希望的,改善患者和人群肾脏健康的具有成本效益的途径。财务激励措施通常会提高护理质量指标的实现-迫切需要对CKD护理中的财务和非财务激励措施进行审查。
    Chronic kidney disease (CKD) is a global public health problem with major human and economic consequences. Despite advances in clinical guidelines, classification systems and evidence-based treatments, CKD remains underdiagnosed and undertreated and is predicted to be the fifth leading cause of death globally by 2040. This review aims to identify barriers and enablers to the effective detection, diagnosis, disclosure and management of CKD since the introduction of the Kidney Disease Outcomes Quality Initiative (KDOQI) classification in 2002, advocating for a renewed approach in response to updated Kidney Disease: Improving Global Outcomes (KDIGO) 2024 clinical guidelines. The last two decades of improvements in CKD care in the UK are underpinned by international adoption of the KDIGO classification system, mixed adoption of evidence-based treatments and research informed clinical guidelines and policy. Interpretation of evidence within clinical and academic communities has stimulated significant debate of how best to implement such evidence which has frequently fuelled and frustratingly forestalled progress in CKD care. Key enablers of effective CKD care include clinical classification systems (KDIGO), evidence-based treatments, electronic health record tools, financially incentivised care, medical education and policy changes. Barriers to effective CKD care are extensive; key barriers include clinician concerns regarding overdiagnosis, a lack of financially incentivised care in primary care, complex clinical guidelines, managing CKD in the context of multimorbidity, bureaucratic burden in primary care, underutilisation of sodium-glucose co-transporter-2 inhibitor (SGLT2i) medications, insufficient medical education in CKD, and most recently - a sustained disruption to routine CKD care during and after the COVID-19 pandemic. Future CKD care in UK primary care must be informed by lessons of the last two decades. Making step change, over incremental improvements in CKD care at scale requires a renewed approach that addresses key barriers to detection, diagnosis, disclosure and management across traditional boundaries of healthcare, social care, and public health. Improved coding accuracy in primary care, increased use of SGLT2i medications, and risk-based care offer promising, cost-effective avenues to improve patient and population-level kidney health. Financial incentives generally improve achievement of care quality indicators - a review of financial and non-financial incentives in CKD care is urgently needed.
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  • 文章类型: Journal Article
    目的:探讨第二代宏基因组下一代测序(mNGS)在肺部感染患者病原菌检测中的应用价值。
    方法:对我院及上海市第五人民医院2021年1月至2023年5月收治的65例肺部感染病例进行回顾性分析。所有受试者都接受了mNGS,靶向下一代测序(tNGS),和常规微生物培养。进行了比较分析,以评估通过这些方法鉴定的病原体的多样性和数量,并评估其在肺部感染诊断中的诊断能力。
    结果:mNGS在65例中的60例中成功确定了病因,与TNGS相比,在42例中产生了积极的结果,和传统的实验室培养,在24例中检测到病原体。在细菌属水平,mNGS辨别9属,11种,和92株病原菌,而tNGS确定了8个属,8种,和71个分离株。常规方法不太敏感,只检测6属,7种,33个分离株在真菌检测方面,mNGS鉴定出4种真菌,tNGS检测到4个念珠菌属的分离株,和常规方法鉴定了2个相同属的分离株。物种水平的病毒检测揭示了10个物种和46个mNGS分离株,而tNGS仅检测到3个物种和7个分离株。对于mNGS,以95%置信区间诊断肺部感染的受试者工作特征曲线(AUC)下面积为0.818(0.671至0.966),对于tNGS,0.668(0.475至0.860),常规培养为0.721(0.545至0.897)。mNGS在呼吸道感染的危重患者中显示出优越的诊断效能和病原体检测广度,通过减少诊断时间提供了显着的优势。mNGS的增强的敏感性和全面的病原体分析强调了其作为临床微生物学中领先的诊断工具的潜力。
    OBJECTIVE: To explore the application value of the second-generation metagenomic next-generation sequencing (mNGS) in the detection of pathogens in patients with pulmonary infection.
    METHODS: We conducted a retrospective analysis of 65 pulmonary infection cases treated at our institution and the Fifth People\'s Hospital of Shanghai between January 2021 and May 2023. All subjects were subjected to mNGS, targeted next-generation sequencing (tNGS), and conventional microbiological culture. A comparative analysis was performed to evaluate the diversity and quantity of pathogens identified by these methodologies and to appraise their respective diagnostic capabilities in pulmonary infection diagnostics.
    RESULTS: The mNGS successfully identified etiological agents in 60 of the 65 cases, compared to tNGS, which yielded positive results in 42 cases, and conventional laboratory cultures, which detected pathogens in 24 cases. At the bacterial genus level, mNGS discerned 9 genera, 11 species, and 92 isolates of pathogenic bacteria, whereas tNGS identified 8 genera, 8 species, and 71 isolates. Conventional methods were less sensitive, detecting only 6 genera, 7 species, and 33 isolates. In terms of fungal detection, mNGS identified 4 fungal species, tNGS detected 4 isolates of the Candida genus, and conventional methods identified 2 isolates of the same genus. Viral detection at the species level revealed 10 species and 46 isolates by mNGS, whereas tNGS detected only 3 species and 7 isolates. The area under the receiver operating characteristic curve (AUC) with 95% confidence intervals for diagnosing pulmonary infections was 0.818 (0.671 to 0.966) for mNGS, 0.668 (0.475 to 0.860) for tNGS, and 0.721 (0.545 to 0.897) for conventional culture.The mNGS demonstrates superior diagnostic efficacy and pathogen detection breadth in critically ill patients with respiratory infections, offering a significant advantage by reducing the time to diagnosis. The enhanced sensitivity and comprehensive pathogen profiling of mNGS underscore its potential as a leading diagnostic tool in clinical microbiology.
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  • 文章类型: Journal Article
    咖啡酸(CA)是一种天然多酚,对人体健康具有多种积极作用。然而,它的提取和加工会导致重大的生态问题。因此,在环境中有效检测和降解CA至关重要。在这项研究中,我们开发了一种多功能的磁性发光纳米酶,Fe3O4@CeO2/Tb-MOF,结合过氧化物酶活性来检测和降解CA。由于其硼酸部分与CA的邻二酚羟基之间的特定亲核反应,纳米酶的荧光显着减弱,能量竞争吸收和光诱导电子转移(PET)效应。这种纳米酶表现出从50nM到500μM的线性检测范围和18.9nM的异常低的检测极限,具有显著的选择性和稳定性。此外,Fe3O4和CeO2在Fe3O4@CeO2/Tb-MOF中的协同催化促进了过氧化物酶活性,导致H2O2催化的大量自由基的产生,这确保了CA的有效降解(~95%)。Fe3O4的超顺磁性能进一步实现了纳米酶的有效再利用和再循环。本研究为环境污染物的同时检测和修复提供了一种新的方法。
    Caffeic acid (CA) is a natural polyphenol that can have various positive effects on human health. However, its extraction and processing can cause significant ecological issues. Therefore, it is crucial to detect and degrade CA effectively in the environment. In this study, we have developed a multifunctional magnetic luminescent nanozyme, Fe3O4@CeO2/Tb-MOF, which combines peroxidase activity to detect and degrade CA. The fluorescence of the nanozyme was significantly attenuated due to the specific nucleophilic reaction between its boronic acid moiety and the o-diphenol hydroxyl group of CA, energy competition absorption and photo-induced electron transfer (PET) effect. This nanozyme demonstrates a linear detection range from 50 nM to 500 μM and an exceptionally low detection limit of 18.9 nM, along with remarkable selectivity and stability. Moreover, the synergistic catalysis of Fe3O4 and CeO2 within Fe3O4@CeO2/Tb-MOF fosters peroxidase activity, leading to the generation of substantial free radicals catalyzed by H2O2, which ensures the efficient degradation of CA (∼95%). The superparamagnetic property of Fe3O4 further enables the efficient reuse and recycling of the nanozyme. This research provides a novel approach for the concurrent detection and remediation of environmental contaminants.
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  • 文章类型: Journal Article
    单粒子低温电子显微镜(cryo-EM)最近加入了X射线晶体学和NMR光谱学,作为解析生物大分子的高分辨率结构方法。在低温EM实验中,显微镜产生的图像称为显微照片。感兴趣的分子的投影嵌入在显微照片中的未知位置,在未知的观察方向下。标准成像技术首先定位这些投影(检测),然后从它们重建3-D结构。不幸的是,高噪声水平阻碍检测。当可靠的检测变得不可能时,标准技术失败。这是个问题,尤其是小分子。在本文中,我们追求一种截然不同的方法:我们认为结构可以,原则上,直接从显微照片中重建,没有中间检测。目的是将小分子带入低温EM。为此,我们设计了一种自相关分析技术,可以直接从显微照片到寻找的结构。这只涉及一次通过显微照片,允许在线,大型实验的流式处理。我们展示了数值结果,并讨论了将这种概念证明转变为最先进算法的补充方法的挑战。
    Single-particle cryo-electron microscopy (cryo-EM) has recently joined X-ray crystallography and NMR spectroscopy as a high-resolution structural method to resolve biological macromolecules. In a cryo-EM experiment, the microscope produces images called micrographs. Projections of the molecule of interest are embedded in the micrographs at unknown locations, and under unknown viewing directions. Standard imaging techniques first locate these projections (detection) and then reconstruct the 3-D structure from them. Unfortunately, high noise levels hinder detection. When reliable detection is rendered impossible, the standard techniques fail. This is a problem, especially for small molecules. In this paper, we pursue a radically different approach: we contend that the structure could, in principle, be reconstructed directly from the micrographs, without intermediate detection. The aim is to bring small molecules within reach for cryo-EM. To this end, we design an autocorrelation analysis technique that allows one to go directly from the micrographs to the sought structures. This involves only one pass over the micrographs, allowing online, streaming processing for large experiments. We show numerical results and discuss challenges that lay ahead to turn this proof-of-concept into a complementary approach to state-of-the-art algorithms.
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  • 文章类型: Journal Article
    背景:登革病毒(DENV)和基孔肯雅病毒(CHIKV)是由埃及伊蚊传播给人类的主要虫媒病毒(A.埃及伊蚊)和白纹伊蚊(A.白纹)蚊子。在缺乏针对这两种病毒的特异性抗病毒药物和疫苗的情况下,对急性感染的及时诊断和对疫情识别的强有力监测仍然至关重要。因此,快速,健壮,高通量,可访问,和低成本的检测是流行国家必不可少的。这项研究评估了我们最近开发的多重RT-PCR和RT-qPCR检测方法,以筛选布基纳法索的DENV1-4和CHIKV循环。
    结果:这项研究,在2023年6月至8月间进行,招募了在布基纳法索三个城市的医疗机构出现的疑似虫媒病毒感染的患者(Bobo-Dioulasso,亨德,和瓦加杜古)。使用我们最新开发的多重RT-PCR和RT-qPCR技术收集血清样品并筛选DENV血清型和CHIKV。共有408名患者(年龄中位数=33,范围从3到84岁)参加了这项研究。其中,DENV感染13.7%(56/408);DENV-1为32.1%(18/56),DENV-3为67.9%(38/56)。未检测到DENV-2、DENV-4和CHIKV。
    结论:本研究证明了我们的分子方法在布基纳法索进行DENV检测和血清分型的有效性。我们的方法的可负担性使得它们对于在资源有限的环境中实施广泛的常规临床诊断或虫媒病毒监测很有价值。
    BACKGROUND: Dengue virus (DENV) and Chikungunya virus (CHIKV) are major arboviruses that are transmitted to humans by Aedes aegypti (A. aegypti) and Aedes Albopictus (A. Albopictus) mosquitoes. In absence of specific antivirals and vaccine against these two viruses, prompt diagnosis of acute infections and robust surveillance for outbreak identification remain crucial. Therefore, rapid, robust, high-throughput, accessible, and low-cost assays are essential for endemic countries. This study evaluated our recently developed multiplex RT-PCR and RT-qPCR assays to screen for DENV1-4 and CHIKV circulation in Burkina Faso.
    RESULTS: This study, conducted between June to August 2023, enrolled patients with suspected arbovirus infection presenting at healthcare facilities in three Burkina Faso cities (Bobo-Dioulasso, Houndé, and Ouagadougou). Serum samples were collected and screened for DENV serotypes and CHIKV using our newly multiplex RT-PCR and RT-q PCR techniques recently developed. A total of 408 patients (age median = 33, range from 3 to 84 years) participated in this study. Of these, 13.7% (56/408) had DENV infection; DENV-1 was 32.1% (18/56) and DENV-3 was 67.9% (38/56). DENV-2, DENV-4 and CHIKV were not detected.
    CONCLUSIONS: This study demonstrates the effectiveness of our molecular methods for DENV detection and serotyping in Burkina Faso. The affordability of our methods makes them valuable for implementing widespread routine clinical diagnostics or arbovirus surveillance in resource-limited settings.
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