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  • 文章类型: Journal Article
    2022年秋季欧洲EHDV的出现加强了对分子工具(RT-PCR)的需求,以快速检测感染该病毒的动物。病毒基因组检测可以在抗凝剂下对全血进行,脾,脾反刍动物的血腥器官匀浆。它也可以在病毒分离测试后对细胞培养物进行。将描述各种所谓的经典或终点RT-PCR,其允许扩增病毒基因组的一部分(靶向区段7),从而允许检测EHDV的任何血清型(pan-RT-PCR),并且还扩增编码能够进行血清分型的病毒蛋白(VP)2的基因的一部分。通过琼脂糖凝胶电泳观察PCR扩增产物。类型特异性RT-PCR扩增产物的测序允许确定病毒的血清型。
    The emergence of EHDV in Europe during the autumn of 2022 reinforces the need for molecular tools (RT-PCR) for rapid detection of animals infected with this virus. Viral genome testing can be performed on whole blood under anticoagulant, spleen, and bloody organ homogenates from ruminants. It can also be performed on cell culture following viral isolation tests. Various so-called classical or end-point RT-PCRs will be described, which permit the amplification of a part of the viral genome (targeting segment 7) allowing the detection of EHDV whatever the serotype (pan-RT-PCR) and also to amplify a portion of the gene coding the viral protein (VP) 2 enabling serotyping. The PCR amplification products are visualized by agarose gel electrophoresis. Sequencing of the type-specific RT-PCR amplification products allows for the serotype of the virus to be determined.
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  • 文章类型: Journal Article
    实时RT-PCR检测临床样本中的流行病出血性疾病病毒(EHDV)是诊断和确认疾病的快速敏感工具。在过去的10年中已经报道了几种实时RT-PCR方法。在这一章中,我们描述了七个双重实时RT-PCR试验来扩增EHDV的基因组片段2的一部分,从而能够进行血清型鉴定。该测定包括内源性对照基因-β-肌动蛋白的检测。
    Real-time RT-PCR for the detection of epizootic hemorrhagic disease virus (EHDV) in clinical samples is a fast and sensitive tool for the diagnosis and confirmation of disease. Several real-time RT-PCR methods have been reported over the last 10 years. In this chapter, we describe seven duplex real-time RT-PCR assays to amplify part of genome segment 2 of EHDV to enable serotype identification. The assay includes the detection of an endogenous control gene-beta-actin.
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  • 文章类型: Journal Article
    有文化的成年人能够以不同的语言模式产生相同的单词-例如,通过说话和写作。然而,口语和写作如何相互作用还没有得到很好的理解。本研究通过研究新词的习得,对语音和拼字表示在口语和写作中的共同激活问题提出了新的观点。我们测试了新词如何通过将新词习得偏向于口语或写作并在学习的第一阶段评估跨模态迁移来整合到特定于模态的词典中。参与者学习了与新颖物体图片配对的新颖单词,并通过说话或打字来公开练习。在测试中,无论是通过打字还是口语来回忆单词,打字训练都比口语训练具有更高的回忆准确性。打字表现(RT和持续时间)比口语训练更受益于打字训练。至关重要的是,口语表现并没有特别受益于口语训练,在口语或打字训练后类似。根据训练方式,结果与语音和拼字词典中的不对称整合兼容,将拼字词典中创建的表示直接转移到语音词典中,而相反的情况似乎没有发生。根据词汇激活水平讨论了跨模态传递动力学。
    Literate adults are able to produce the same word in different language modalities-for instance, through speaking and writing. Yet how speaking and writing interact is not well understood. The present study takes a new perspective on the question of the co-activation of phonological and orthographic representations in speaking and writing by examining the acquisition of novel words. We tested how novel words get integrated into modality-specific lexicons by biasing novel word acquisition toward speaking or writing and assessing cross-modal transfer at the first stages of learning. Participants learned novel words paired with pictures of novel objects and practiced them overtly through speaking or typing. At test, typed training led to higher recall accuracy than spoken training whether words were recalled through typing or speaking. Performance in typing (RT and durations) benefited more from typed than spoken training. Crucially, performance in speaking did not benefit specifically from spoken training and was similar after spoken or typed training. Results are compatible with an asymmetric integration in the phonological and orthographic lexicons according to the modality of training, with representations created in the orthographic lexicon directly transferring to the phonological lexicon, while the opposite doesn\'t seem to occur. Cross-modal transfer dynamics are discussed according to the level of lexical activation.
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  • 文章类型: Journal Article
    肠道病毒(EV)感染有各种症状和严重的并发症,包括死亡。为了确定斯洛文尼亚的EV患病率和EV类型,分析了2014年至2023年用于诊断和监测的超过25000例EVRNA测试的数据.总之,对3733个脑脊液(CSF)和21个297个呼吸(前哨和临床)样品进行EVRNA测试。对所有残留的EV阳性CSF样品和呼吸道标本的子集进行EV分型。总之,1238个样品的EVRNA检测为阳性:238(6.4%)CSF和1000(4.7%)呼吸道样品。EV阳性患者主要为男性(p<0.001)。许多EV阳性CSF样本来自3个月以下的婴儿(33.1%),而大多数EV阳性呼吸道样本来自1~2岁儿童(49.2%).Echovirus30(E-30)在CSF中最常见(33.0%),其次是CV-B5(13.8%)和E-6(13.8%)。CV-A6在呼吸道样本中最常见(16.0%),其次是EV-D68(7.6%)和CV-A5(7.4%)。脑脊液和呼吸道样本中的EV类型显示出不同的动力学,一些疫情表明。根据年龄,CSF和呼吸道样本之间的EV检出率存在显着差异。对各种EV类型进行了表征,表明某些EV类型更亲神经或引起更严重的感染。
    Enterovirus (EV) infections have various symptoms and severe complications, including death. To determine EV prevalence and EV types in Slovenia, data on over 25 000 EV RNA tests for diagnostics and surveillance from 2014 to 2023 were analyzed. Altogether, 3733 cerebrospinal fluid (CSF) and 21 297 respiratory (sentinel and clinical) samples were tested for EV RNA. EV typing was performed on all residual EV-positive CSF samples and on subset of respiratory specimens. Altogether, 1238 samples tested positive for EV RNA: 238 (6.4%) CSF and 1000 (4.7%) respiratory samples. EV-positive patients were predominantly male (p < 0.001). Many EV-positive CSF samples were from infants under 3 months (33.1%), whereas most EV-positive respiratory samples were from children 1 to 2 years old (49.2%). Echovirus 30 (E-30) was most frequent in CSF (33.0%), followed by CV-B5 (13.8%) and E-6 (13.8%). CV-A6 was most frequent in respiratory samples (16.0%), followed by EV-D68 (7.6%) and CV-A5 (7.4%). EV types in CSF and respiratory samples show diverse dynamics, with some outbreaks indicated. A significant difference was found in the EV detection rate between CSF and respiratory samples by age. Various EV types were characterized, showing that some EV types are more neurotropic or cause more severe infections.
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  • 文章类型: Journal Article
    唾液腺淀粉样变性是一种罕见的诊断。大多数研究集中于小唾液腺活检作为诊断系统性淀粉样变性的替代部位。虽然只有少数研究调查了主要的唾液腺淀粉样变性。我们在2010年至2022年之间使用基于蛋白质组学的方法对57例主要和次要唾液腺淀粉样变性病例进行了回顾性分析。淀粉样蛋白类型的频率,临床病理特征,并评估了淀粉样沉积物的分布模式。唾液腺活检/切除的适应症(34例已知)包括疑似淀粉样变性(N=14;41.2%),病变/肿块(N=12;35.3%),肿胀/扩大(N=5;14.7%),排除干燥综合征(N=3;8.8%)。合并病理报告16例,包括慢性唾液腺炎(N=11),结外边缘区淋巴瘤(N=3),浆细胞肿瘤(N=1),多形性腺瘤(N=1)。我们确定了3种类型的淀粉样变性:免疫球蛋白轻链/AL(N=47;82.5%);免疫球蛋白重链/AH(N=1;1.8%),和转甲状腺素蛋白/ATTR(N=9;15.8%)。淀粉样蛋白沉积的模式(在35例中评估)包括:1)血管周围和/或导管周围分布(N=18;51.4%);2)肿块形成(N=9;25.7%);3)基质微结节形成(N=7;20.0%);和4)弥漫性间质受累(N=1;2.9%)。我们还确定了一例位于主要唾液腺的AL淀粉样变性,以前仅报道了其他6例经过适当分期检查以排除系统性淀粉样变性的病例。总之,唾液腺淀粉样变性是一种罕见的诊断,但由于怀疑指数低,可能被低估。大多数唾液腺淀粉样变性为AL型,但少数是ATTR。因此,基于蛋白质组学的分型对于治疗和预后仍然至关重要。
    Salivary gland amyloidosis is an uncommon diagnosis. Most studies have focused on minor salivary gland biopsies as a surrogate site for diagnosing systemic amyloidosis, while only few studies have investigated major salivary gland amyloidosis. We retrospectively identified 57 major and minor salivary gland amyloidosis cases typed using a proteomics-based method between 2010 and 2022. Frequency of amyloid types, clinicopathologic features, and distribution patterns of amyloid deposits were assessed. The indication for salivary gland biopsy/resection (known in 34 cases) included suspected amyloidosis (N = 14; 41.2%), lesion/mass (N = 12; 35.3%), swelling/enlargement (N = 5; 14.7%), and rule out Sjogren syndrome (N = 3; 8.8%). Concurrent pathology was reported in 16 cases, and included chronic sialadenitis (N = 11), extranodal marginal zone lymphoma (N = 3), plasma cell neoplasm (N = 1), and pleomorphic adenoma (N = 1). We identified 3 types of amyloidosis: immunoglobulin light chain/AL (N = 47; 82.5%); immunoglobulin heavy chain/AH (N = 1; 1.8%), and transthyretin/ATTR (N = 9; 15.8%). The patterns of amyloid deposits (assessed in 35 cases) included: 1) Perivascular and/or periductal distribution (N = 18; 51.4%); 2) Mass formation (N = 9; 25.7%); 3) Stromal micronodule formation (N = 7; 20.0%); and 4) Diffuse interstitial involvement (N = 1; 2.9%). We also identified one case of AL amyloidosis localized to the major salivary gland, where only 6 other cases with adequate staging workup to exclude systemic amyloidosis were previously reported. In conclusion, salivary gland amyloidosis is an uncommon diagnosis but may be underrecognized due to low index of suspicion. Most cases of salivary gland amyloidosis are AL type, but a minority are ATTR. Therefore, proteomics-based typing remains essential for treatment and prognosis.
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  • 文章类型: Journal Article
    反应更灵敏,可靠,临床上有效的残疾终点对缩小体型至关重要,持续时间,和成人脊髓性肌萎缩症(aPwSMA)的临床试验负担。
    目的是研究基于智能手机的评估在aPwSMA中的可行性,并提供关于在aPwSMA中远程收集的移动性和手动灵活性的传感器衍生度量(SDM)的可靠性和构造有效性的证据。
    数据来自59个aPwSMA(23个步行者,20名保姆和16名非保姆)和30名年龄匹配的健康对照(HC)。SDM是从五项基于智能手机的测试中提取的,这些测试捕获了移动性和手动灵活性,在临床和日常生活中远程给药四周。可靠性(组内相关系数,ICC)和构建效度(区分HC和aPwSMA的能力以及与修订的上肢模块的相关性,RULM和Hammersmith功能量表-扩展的HFMSE)对所有SDM进行了量化。
    基于智能手机的评估被证明是可行的,aPwSMA平均依从性为92.1%。SDM允许可靠地评估移动性和灵活性(15/22SDM的ICC>0.75)。22个SDM中有21个在HC和aPwSMA之间有明显区别。在两个非保姆的手动灵活性测试中,SDM与RULM的相关性最高(分型,ρ=0.78)和坐席(Pinching,ρ=0.75)。在步行者中,最高的相关性是流动性测试和HFMSE(5个U-Turns,ρ=0.79)。
    这项探索性研究为在参与者\'日常生活中远程部署时,基于智能手机对aPwSMA中的移动性和手动灵活性进行评估的可用性提供了初步证据。证明了在现实生活中远程收集的SDM的可靠性和构造有效性,这是他们在纵向试验中使用的先决条件。此外,成功为aPwSMA建立了三个新颖的基于智能手机的性能结果评估。在进一步验证对干预措施的反应后,这项技术具有提高aPwSMA临床试验效率的潜力.
    UNASSIGNED: More responsive, reliable, and clinically valid endpoints of disability are essential to reduce size, duration, and burden of clinical trials in adult persons with spinal muscular atrophy (aPwSMA).
    UNASSIGNED: The aim is to investigate the feasibility of smartphone-based assessments in aPwSMA and provide evidence on the reliability and construct validity of sensor-derived measures (SDMs) of mobility and manual dexterity collected remotely in aPwSMA.
    UNASSIGNED: Data were collected from 59 aPwSMA (23 walkers, 20 sitters and 16 non-sitters) and 30 age-matched healthy controls (HC). SDMs were extracted from five smartphone-based tests capturing mobility and manual dexterity, which were administered in-clinic and remotely in daily life for four weeks. Reliability (Intraclass Correlation Coefficients, ICC) and construct validity (ability to discriminate between HC and aPwSMA and correlations with Revised Upper Limb Module, RULM and Hammersmith Functional Scale - Expanded HFMSE) were quantified for all SDMs.
    UNASSIGNED: The smartphone-based assessments proved feasible, with 92.1% average adherence in aPwSMA. The SDMs allowed to reliably assess both mobility and dexterity (ICC > 0.75 for 15/22 SDMs). Twenty-one out of 22 SDMs significantly discriminated between HC and aPwSMA. The highest correlations with the RULM were observed for SDMs from the manual dexterity tests in both non-sitters (Typing, ρ= 0.78) and sitters (Pinching, ρ= 0.75). In walkers, the highest correlation was between mobility tests and HFMSE (5 U-Turns, ρ= 0.79).
    UNASSIGNED: This exploratory study provides preliminary evidence for the usability of smartphone-based assessments of mobility and manual dexterity in aPwSMA when deployed remotely in participants\' daily life. Reliability and construct validity of SDMs remotely collected in real-life was demonstrated, which is a pre-requisite for their use in longitudinal trials. Additionally, three novel smartphone-based performance outcome assessments were successfully established for aPwSMA. Upon further validation of responsiveness to interventions, this technology holds potential to increase the efficiency of clinical trials in aPwSMA.
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  • 文章类型: Journal Article
    耐碳青霉烯类鲍曼不动杆菌(CRAb)是引起严重医院感染的重要病原菌。我们描述了2021年荷兰重症监护病房CRAb的爆发。在非耐药鲍曼不动杆菌爆发期间,在感染控制措施到位的同时,在几个月的时间内,从三名患者中分离出携带高度相似的blaNDM-1和tet(x3)编码质粒的CRAb分离株。使用短读和长读序列的混合组装分析了从患者材料培养的CRAb和非碳青霉烯酶携带鲍曼不动杆菌分离株的染色体和质粒序列。CRAb分离株显示,CRAb爆发由两种不同的菌株组成,携带类似的质粒。质粒含有多种抗生素抗性基因,包括四环素抗性基因tet(x3),和blaNDM-1和blaOXA-97碳青霉烯酶基因。我们确定了13种抗生素的最低抑制浓度(MIC),包括新注册的四环素类抗生素埃拉环素和奥马环素。CRAb分离株对包括埃拉环素和奥马环素在内的四环素类抗生素显示出较高的MIC,除了米诺环素具有低MIC。在这项研究中,我们展示了对多重耐药鲍曼不动杆菌进行测序对疫情跟踪和指导疫情缓解措施的价值。
    Carbapenem-resistant Acinetobacter baumannii (CRAb) is an important pathogen causing serious nosocomial infections. We describe an outbreak of CRAb in an intensive care unit in the Netherlands in 2021. During an outbreak of non-resistant A. baumannii, while infection control measures were in place, CRAb isolates carrying highly similar bla NDM-1 - and tet(x3)-encoding plasmids were isolated from three patients over a period of several months. The chromosomal and plasmid sequences of the CRAb and non-carbapenemase-carrying A. baumannii isolates cultured from patient materials were analysed using hybrid assemblies of short-read and long-read sequences. The CRAb isolates revealed that the CRAb outbreak consisted of two different strains, carrying similar plasmids. The plasmids contained multiple antibiotic resistance genes including the tetracycline resistance gene tet(x3), and the bla NDM-1 and bla OXA-97 carbapenemase genes. We determined minimal inhibitory concentrations (MICs) for 13 antibiotics, including the newly registered tetracycline antibiotics eravacycline and omadacycline. The CRAb isolates showed high MICs for tetracycline antibiotics including eravacycline and omadacycline, except for minocycline which had a low MIC. In this study we show the value of sequencing multidrug-resistant A. baumannii for outbreak tracking and guiding outbreak mitigation measures.
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  • 文章类型: Journal Article
    疫情对公众健康构成风险,特别是在致病时,高毒力,和/或多重耐药生物体(MDRO)参与。在医院里,脆弱的人群,如免疫抑制者,重症监护病人,新生儿的风险最大。快速准确的疫情检测对于在临床领域实施有效的干预措施以控制和阻止进一步的传播至关重要。全基因组测序(WGS)领域的进步降低了成本,容量增加,并提高了结果的可重复性。WGS现在有可能彻底改变疫情的调查和管理,取代传统的基因分型和其他歧视系统。这里,我们概述了实施WGS调查医疗机构疫情暴发的具体程序和方案.
    Outbreaks are a risk to public health particularly when pathogenic, hypervirulent, and/or multidrug-resistant organisms (MDROs) are involved. In a hospital setting, vulnerable populations such as the immunosuppressed, intensive care patients, and neonates are most at risk. Rapid and accurate outbreak detection is essential to implement effective interventions in clinical areas to control and stop further transmission. Advances in the field of whole genome sequencing (WGS) have resulted in lowered costs, increased capacity, and improved reproducibility of results. WGS now has the potential to revolutionize the investigation and management of outbreaks replacing conventional genotyping and other discrimination systems. Here, we outline specific procedures and protocols to implement WGS into investigation of outbreaks in healthcare settings.
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  • 文章类型: Journal Article
    打字中的错误检测对于评估正在进行的操作的充分性至关重要,利用早期检测的预测机制和后期检测的感官反馈。神经生理学研究支持通过预测模型预测错误。这项研究扩展了对打字错误检测的理解,关注透明和不透明德语单词错误的神经认知机制。36名志愿者学生打出了清晰呈现的单词,分类为正交透明或不透明,在电脑键盘上没有校正的可能性。由于拼写差或人工制品过多,最终样本包括27名参与者。事件相关电位(ERPs)被时间锁定到按键,并收集了有关打字正确性和速度的行为数据。发现与透明单词相比,不透明单词的错误率更高,延迟更长,这表明拼写的复杂性会影响打字的正确性。观察到错误后的速度减慢,与错误后增加的认知控制保持一致。ERPs揭示了一个类似于打字错误的错误相关负性(ERN)的负面成分,在错误按键之前有明显的类似ERN的否定,尤其是不透明的单词。该研究提供了分型错误背后的认知和神经机制的证据,突出正交透明度的影响。在错误按键之前检测到类似ERN的消极性,尤其是在输入不透明的单词时,强调了大脑对错误检测的预测机制的使用。
    Error detection in typing is crucial for assessing the adequacy of ongoing actions, leveraging both predictive mechanisms for early detection and sensory feedback for late detection. Neurophysiological studies have supported the anticipation of errors through predictive models. This research extends the understanding of error detection in typing, focusing on the neurocognitive mechanisms underlying errors in transparent and intransparent German words. Thirty-six volunteer students typed out aurally presented words, classified as either orthographically transparent or intransparent, on a computer keyboard without the possibility of correction. Because of poor spelling or excessive artifacts, the final sample comprised 27 participants. Event-related potentials (ERPs) were obtained time-locked to key presses, and behavioral data on typing correctness and speed were collected. A higher error rate and longer latency for intransparent words compared to transparent ones were found, suggesting the complexity of spelling impacts typing correctness. Post-error slowing was observed, aligning with increased cognitive control following errors. ERPs revealed a negative component akin to the error-related negativity (ERN) for typing errors, with a pronounced ERN-like negativity preceding erroneous key-presses, particularly for intransparent words. The study provides evidence of the cognitive and neural mechanisms underlying typing errors, highlighting the impact of orthographic transparency. The detection of an ERN-like negativity before erroneous key-presses, especially in typing intransparent words, underscores the brain\'s use of predictive mechanisms for error detection.
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  • 文章类型: Journal Article
    随着数据在GenBank中的积累,仅根据核小亚基核糖体RNA(ssurRNA)基因信息来划分隐孢子虫物种的困难变得越来越明显。这里,我们总结了当前可用的证据,表明主要被称为猪隐孢子虫的一些ssurDNA序列(其中一些来自非宿主)应被视为隐孢子虫。
    As data accumulate in GenBank, the difficulties of delineating species of Cryptosporidium based on nuclear small subunit ribosomal RNA (ssu rRNA) gene information alone becomes increasingly evident. Here, we summarize currently available evidence suggesting that several ssu rDNA sequences primarily referred to as Cryptosporidium suis (some of them from non-suid hosts) should be considered Cryptosporidium occultus.
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