DAs

神经氨酸酶缺乏症
  • 文章类型: Journal Article
    当前的研究致力于鉴定在拟南芥幼苗中在多种多因素非生物胁迫组合下表现出与剪接因子(SF)一致表达的差异表达的选择性剪接(DAS)基因。SF作为控制基因表达时空动态的转录后机制。不同的应力包括盐浓度的变化,热,密集的光,和他们的组合。调查了表现出一致表达谱的簇,以查明表现出一致表达的DAS/SF基因对。通过严格的选择标准,与本研究中观察到的已记录的基因功能和表达模式进行比对,丝氨酸/富含精氨酸(SR)基因家族的四个成员被描述为与六个DAS基因一致表达的SF。这些受调节的SF基因包括cactin,SR1-like,SR30和SC35类。鉴定的一致表达的DAS基因编码不同的蛋白质,如26.5kDa的热休克蛋白,蛋白伴侣DnaJ,钾通道GORK,钙结合EF手家族蛋白,DEAD-boxRNA解旋酶,和1-氨基环丙烷-1-羧酸合酶6.在一致表达的DAS/SF基因对中,SR30/DEAD-boxRNA解旋酶,和SC35样/1-氨基环丙烷-1-羧酸合酶6成为有希望的候选者,需要进一步检查以确定这些SF是否协调相应DAS基因的剪接。这项研究有助于更深入地理解剪接机制对非生物胁迫的各种响应。利用这些DAS/SF关联显示出有望阐明增强育种计划的途径,这些育种计划旨在增强栽培植物免受高温和强光胁迫的能力。
    The current investigation endeavors to identify differentially expressed alternatively spliced (DAS) genes that exhibit concordant expression with splicing factors (SFs) under diverse multifactorial abiotic stress combinations in Arabidopsis seedlings. SFs serve as the post-transcriptional mechanism governing the spatiotemporal dynamics of gene expression. The different stresses encompass variations in salt concentration, heat, intensive light, and their combinations. Clusters demonstrating consistent expression profiles were surveyed to pinpoint DAS/SF gene pairs exhibiting concordant expression. Through rigorous selection criteria, which incorporate alignment with documented gene functionalities and expression patterns observed in this study, four members of the serine/arginine-rich (SR) gene family were delineated as SFs concordantly expressed with six DAS genes. These regulated SF genes encompass cactin, SR1-like, SR30, and SC35-like. The identified concordantly expressed DAS genes encode diverse proteins such as the 26.5 kDa heat shock protein, chaperone protein DnaJ, potassium channel GORK, calcium-binding EF hand family protein, DEAD-box RNA helicase, and 1-aminocyclopropane-1-carboxylate synthase 6. Among the concordantly expressed DAS/SF gene pairs, SR30/DEAD-box RNA helicase, and SC35-like/1-aminocyclopropane-1-carboxylate synthase 6 emerge as promising candidates, necessitating further examinations to ascertain whether these SFs orchestrate splicing of the respective DAS genes. This study contributes to a deeper comprehension of the varied responses of the splicing machinery to abiotic stresses. Leveraging these DAS/SF associations shows promise for elucidating avenues for augmenting breeding programs aimed at fortifying cultivated plants against heat and intensive light stresses.
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  • 文章类型: Journal Article
    地震方法广泛用于煤矿开采,以扩大资源发现和定义以及矿山监测。然而,由于使用常规井下工具进行井眼地震采集的成本较高,因此使用井眼地震方法相对少见。分布式声学传感(DAS)的引入,使用光纤记录地震数据,大大提高了钻孔地震方法的成本效益。光纤电缆价格低廉,一旦部署在钻孔中,可以放弃或以后用于进一步监测地下。此处介绍的案例研究涉及使用DAS记录昆士兰煤层勘探的3DVSP(垂直地震剖面),澳大利亚。这项研究尝试了将电缆部署到钻孔中的有效策略,并展示了如何将该技术纳入标准煤炭勘探过程。最终处理结果产生了一个高分辨率的3D地震立方体,其中玄武岩覆盖层下方的煤层在钻孔周围可以清楚地识别。将光纤电缆永久安装到一组钻孔中提供了3D地震成像的直接好处,并且可以在利用这些传感器进行进一步的离散或连续地下测量时创造额外价值。包括地下工作的稳定性监测和甲烷积聚的检测。
    Seismic methods are extensively used in coal mining for expanding resource discoveries and definition as well as for mine monitoring. However, the use of borehole seismic methods is relatively uncommon due to the high cost of borehole seismic acquisition using conventional downhole tools. The introduction of distributed acoustic sensing (DAS), which uses optical fibres to record seismic data, has dramatically increased the cost-effectiveness of borehole seismic methods. Fibre-optic cables are inexpensive and, once deployed in a borehole, can be abandoned or used later for further monitoring of the subsurface. The case study presented here concerns the use of DAS to record a 3D VSP (vertical seismic profiling) for coal seam exploration in Queensland, Australia. This study trialled effective strategies for deploying cables into boreholes and demonstrated how this technology could be incorporated into the standard coal exploration process. The final processing results produced a high-resolution 3D seismic cube where the coal seams below the basalt cover are clearly identifiable around the boreholes. Permanent installation of the fibre-optic cables into a set of boreholes provides immediate benefits of 3D seismic imaging and can create additional value in utilising these sensors for further discrete or continuous subsurface measurements, including stability monitoring of underground workings and detection of methane accumulations.
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  • 文章类型: Journal Article
    背景在类风湿关节炎患者中,锌水平缺乏以及疾病活动增加会增加氧化DNA损伤。然而,锌水平之间的关系,疾病活动,氧化性DNA损伤仍不清楚。在这项研究中,我们调查了血清锌水平和疾病活动性,以及它们与8-羟基-2-脱氧鸟苷(8-OHdG)的关系.方法本病例对照研究在类风湿关节炎患者(n=264)和健康个体(n=192)中进行。通过使用酶联免疫吸附测定法测量血清8-OHdG来评估氧化性DNA损伤。比色法用于测量血清锌水平。使用疾病活动评分-28(DAS-28)评分评估疾病活动。结果与对照组相比,在试验组中发现显著更高的8-OHdG水平(p<0.00)。此外,与对照组相比,类风湿关节炎患者血清锌水平显著降低(p<0.001).此外,与平均血清锌水平正常的患者相比,血清锌水平低的患者的8-OHdG水平更高.与疾病活动性高的患者相比,中度和低疾病活动性的患者的DNA氧化损伤水平较低。血清锌水平与DAS-28评分和氧化DNA损伤标志物之间存在显著负相关(分别为r=-0.30,p=0.038和r=-0.26,p=0.043),在健康个体中,体重指数与8-OHdG之间存在显着正相关(r=0.22,p=0.02)。结论高血清8-OHdG水平和高疾病活动度和低平均血清锌水平可能表明类风湿关节炎患者存在高度的DNA氧化损伤。
    Background In patients with rheumatoid arthritis, oxidative DNA damage is increased by deficient zinc levels as well as increasing disease activity. However, the relationship between zinc levels, disease activity, and oxidative DNA damage remains unclear. In this study, we investigated serum zinc levels and disease activity and their association with 8-hydroxy-2-deoxyguanosine (8-OHdG). Methodology This case-control study was conducted among rheumatoid arthritis patients (n = 264) and healthy individuals (n = 192). Oxidative DNA damage was assessed by measuring serum 8-OHdG using enzyme-linked immunosorbent assay. Colorimetry was used to measure serum zinc levels. Disease activity was assessed using the Disease Activity Score-28 (DAS-28) score. Results Significantly higher 8-OHdG levels (p < 0.00) were found in the test group compared to the control group. Moreover, significantly lower serum zinc levels (p < 0.001) were noted in patients with rheumatoid arthritis compared to the control group. In addition, higher 8-OHdG levels were found in patients with low serum zinc levels compared to those with normal mean serum zinc levels. Lower levels of DNA oxidative damage were found in patients with moderate and low disease activity compared to those with high disease activity. A significant negative correlation was noted between serum zinc levels and DAS-28 scores and oxidative DNA damage marker (r = - 0.30, p = 0.038 and r = - 0.26, p = 0.043, respectively), while a significant positive correlation was observed between body mass index and 8-OHdG (r = 0.22, p = 0.02) in healthy individuals. Conclusions High serum 8-OHdG levels and high disease activity with low mean serum zinc levels may indicate a high degree of oxidative DNA damage in patients with rheumatoid arthritis.
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  • 文章类型: Journal Article
    长距离管道运输的不同阶段存在各种健康问题。这些问题对环境污染构成潜在风险,资源浪费,以及人类生命和财产的安全。必须实时了解管道在整个生命周期中的整体健康状况。本文研究了长输管道的各种健康监测技术,为解决长期运输过程中可能出现的潜在安全问题提供参考。本文从管道结构健康的角度总结了影响管道健康的因素和特点。介绍了主要管道健康监测技术的原理及其各自的优缺点。本文还重点介绍了分布式声学传感(DAS)技术的应用,特别是时间和空间连续监测技术,管道结构健康监测领域。本文论述了DAS技术的商业化发展过程,实验领域的主要研究进展,和开放的研究问题。DAS技术在长输管道健康监测领域具有广阔的应用前景。
    There are various health issues associated with the different stages of long-distance pipeline transportation. These issues pose potential risks to environmental pollution, resource waste, and the safety of human life and property. It is essential to have real-time knowledge of the overall health status of pipelines throughout their entire lifecycle. This article investigates various health-monitoring technologies for long-distance pipelines, providing references for addressing potential safety issues that may arise during long-term transportation. This review summarizes the factors and characteristics that affect pipeline health from the perspective of pipeline structure health. It introduces the principles of major pipeline health-monitoring technologies and their respective advantages and disadvantages. The review also focuses on the application of Distributed Acoustic Sensing (DAS) technology, specifically time and space continuous monitoring technology, in the field of pipeline structure health monitoring. This paper discusses the process of commercialization development of DAS technology, the main research progress in the experimental field, and the open research issues. DAS technology has broad application prospects in the field of long-distance transportation pipeline health monitoring.
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  • 文章类型: Journal Article
    背景:牙科护理最著名和最常用的行为障碍是牙科焦虑。一个较少研究的障碍是过度的呕吐反射,这会严重阻碍牙科治疗。另一个研究不足且可能相关的综合征是恐惧症(一种特定的呕吐恐惧症)。
    目的:本研究的目的是检查自我报告的恐惧症中可能的共病,牙科焦虑,在牙科诊所过度作呕。
    方法:使用以下自我报告问卷进行了横断面在线调查:牙科焦虑量表,呕吐问题评估,阻塞评估量表(GAS),和特定的呕吐恐惧症(SPOVI)。
    结果:总而言之,164名参与者完全填写了问卷(87.8%为女性;平均年龄,34±11.07年)。所有变量之间均呈正相关(P<.001)。高阻塞(GAS>6)与7.29倍(P<.000)的阳性恐惧症(SPOVI≥10)风险相关。线性回归分析显示,反射强度和在牙科诊所遇到气味时的呕吐经历以及牙科焦虑和呕吐恐惧症显着预测了GAS评估的参与者的呕吐得分(R2=0.59;F=21.16;P<.001)。
    结论:研究表明,牙科诊所的过度呕吐反射与牙科焦虑和恐惧症密切相关。
    BACKGROUND: The most known and commonly studied behavioral obstacle to dental care is dental anxiety. An obstacle that is less studied though no less problematic is excessive gag reflex, which can severely impede dental treatment. Another understudied and possibly related syndrome is emetophobia (a specific phobia of vomiting).
    OBJECTIVE: The aim of this study was to examine possible comorbidity amongst self-reported emetophobia, dental anxiety, and excessive gagging in the dental office.
    METHODS: A cross-sectional online survey was conducted using the following self-report questionnaires: Dental Anxiety Scale, Gagging Problem Assessment, Gagging Assessment Scale (GAS), and Specific Phobia of Vomiting Inventory (SPOVI).
    RESULTS: In all, 164 participants fully completed the questionnaires (87.8% female; mean age, 34 ± 11.07 years). Positive correlations were found amongst all variables (P < .001). High gagging (GAS > 6) was associated with a 7.29 times (P < .000) greater risk of positive emetophobia (SPOVI ≥ 10). Linear regression analyses revealed that the intensity of the reflex and the experience of gagging upon encountering odours in the dental office as well as dental anxiety and vomiting phobia significantly predicted participants\' gagging scores as evaluated by GAS (R2 = 0.59; F = 21.16; P < .001).
    CONCLUSIONS: The study shows that excessive gagging reflex in the dental office is closely related both to dental anxiety and to emetophobia.
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  • 文章类型: Journal Article
    SistanYaghooti葡萄品种,尽管有早熟等特点,由于小浆果和密集的集群,容易发生集群腐烂。在这方面,AS可以在发育过程中和响应环境信号的调节机制。进行RNA-Seq分析以测量SistanYaghooti葡萄簇生长和发育阶段的基因表达和AS事件的程度。阶段期间AS事件的数量增加,这表明它有助于葡萄藤对各种压力的适应性。此外,DEG和DAS基因在簇生长阶段几乎没有重叠。对19194个DAS-基因集的功能分析表明,VIT_06s0004g06670基因通过激活5个PLC生物合成途径参与钙通道(Ca2+)的激活。在27229DEG-套装中,VIT_07s0005g05320基因显示较高表达。有趣的是,该基因参与合成含EF手结构域的蛋白质,该蛋白质能够通过激活4种生化途径与Ca2结合。这些基因增加细胞溶质Ca2+浓度,提高植物的抗逆性和抗裂能力。这些结果表明,AS可以独立地响应不同类型的压力。在其他DAS基因中,GA2ox基因(VvGA2ox)在集群发育过程中显示AS事件增加。该基因对于启动GA的降解过程至关重要,并且在种子发育的不同阶段中起着至关重要的作用。因此,该基因很可能是导致SistanYaghooti葡萄密度和无核的主要因素之一。
    Sistan Yaghooti grape variety, despite characteristics such as early ripening, is vulnerable to cluster rot due to small berries and dense clusters. In this regard, AS may serve as a regulatory mechanism during developmental processes and in response to environmental signals. RNA-Seq analysis was performed to measure gene expression and the extent of AS events in the cluster growth and development stages of Sistan Yaghooti grape. The number of AS events increased during stages, suggesting that it contributes to the grapevine\'s adaptability to various stresses. In addition, DEG and DAS genes showed little overlap in cluster growth stages. Functional analysis of 19,194 DAS -gene sets showed that VIT_06s0004g06670 gene is involved in the activation of calcium channels (Ca2+) through the activation of 5 PLC biosynthetic pathways. Among the 27,229 DEG -sets, VIT_07s0005g05320 gene showed higher expression. Interestingly, this gene is involved in the synthesis of an EF -hand domain-containing protein capable of binding to Ca2+ by activating 4 biochemical pathways. These genes increase cytosolic Ca2+ concentration, enhancing plant stress tolerance and resistance to cracking. These results show that AS can respond independently to different types of stress. Among the other DAS genes, the GA2ox gene (VvGA2ox) showed an increase in AS events during cluster development. This gene is critical for initiating the degradation process of GA and plays a crucial role in different stages of seed development. Therefore, it is very likely that this gene is one of the main factors responsible for the density and seedlessness of Sistan Yaghooti grape.
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  • 文章类型: Journal Article
    横截面,本研究收集了高中青春期女生的代表性样本。我们分析了600名旁遮普印度女性青少年的数据(200名来自人文学科,200来自商业,和200名来自科学流),年龄在15-17岁之间,他们是从政府和私立学校中随机选择的。抑郁症的症状,焦虑,和压力通过DAS问卷进行评估。总体患病率为50.8%,58.7%,68%的人患有抑郁症,焦虑,和压力,分别。据报道,抑郁症有显著差异(.000),焦虑(.000),和三个流的青少年之间的压力(.002)。研究结果指出,有必要采取一些干预措施,对青春期少女进行压力的负面影响教育,抑郁症,和他们身体上的焦虑。
    A cross-sectional, representative sample from adolescent girls of higher senior secondary schools was collected for the study. We analyzed the data from 600 Punjabi Indian female adolescents (200 from humanities, 200 from commerce, and 200 from science stream) aged 15-17 years who were randomly selected from government and private schools. The symptoms of depression, anxiety, and stress were assessed by the DAS questionnaire. Overall prevalence was 50.8%, 58.7%, and 68% for depression, anxiety, and stress, respectively. A significant difference was reported for depression (.000), anxiety (.000), and stress (.002) between adolescents of three streams. The results of the study point out that there is a necessity for some interventions to educate adolescent girls about the negative effects of stress, depression, and anxiety on their body.
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  • 文章类型: Journal Article
    分布式声传感(DAS)是一种很有前途的地震数据采集技术,特别是在井下应用。然而,井下DAS测量可能受到光纤电缆的部署方法的影响。在Otway国际测试中心钻探的两个井(一个垂直和一个偏离)的现场试验中探索了这些影响。在垂直井中的试验表明,(1)由于与地层的最佳耦合,胶接在套管后面的光纤电缆提供了最高质量的数据,和(2)管道输送电缆显示只有稍弱的耦合,但是源产生的噪声会严重降低数据质量。松散地悬挂在斜井中的电缆可提供与胶结DAS电缆相当的数据质量。为了更好地了解观察到的效果的性质,现场实验由数值建模与1.5D全波反射率算法(三维波传播在一维模型)补充,水泥,套管和井筒由无限垂直层表示。结果表明:(1)水泥层对DAS振幅的影响很小(<5%);(2)充满液体的钻孔中的垂直应变与地层中的垂直应变相当;(3)电缆中的应变振幅在地层和流体中均具有相同的数量级。当电缆的泊松比为零时以及当井眼流体为空气时,电缆中的应变均为零。结果证实了使用悬挂在井眼液体(而不是气体!)中的光纤电缆进行井眼DAS测量的可行性。
    Distributed acoustic sensing (DAS) is a promising technology for seismic data acquisition, particularly in downhole applications. However, downhole DAS measurements can be affected by the deployment method of the fibre-optic cable. These effects were explored in a field trial in two wells (one vertical and one deviated) drilled at the Otway International Test Centre. The trial in the vertical well shows that (1) fibre-optic cables cemented behind the casing provide data of the highest quality due to the best coupling to the formation, and (2) tubing-conveyed cable shows only slightly weaker coupling, but the data quality can be severely degraded by source-generated noise. A cable loosely suspended in the deviated well provided data quality comparable to that of the cemented DAS cable. To better understand the nature of the observed effects, the field experiments were supplemented by numerical modelling with a 1.5D full wave reflectivity algorithm (3D wave propagation in a 1D model), where cement, casing and wellbore were represented by infinite vertical layers. The results show that (1) a cement layer has only a slight effect (<5%) on the DAS amplitude; (2) the vertical strain in a liquid-filled borehole is comparable to that in the formation; and (3) the strain amplitude in the cable is of the same order of magnitude both in the formation and in the fluid. The strain in the cable is zero both when the cable\'s Poisson\'s ratio is zero and when the borehole fluid is air. The results confirm the feasibility of borehole DAS measurements with fibre-optic cables suspended in a borehole liquid (but not gas!).
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  • 文章类型: Journal Article
    目的:这项研究的目的是评估罗马尼亚版本的牙科焦虑和恐惧指数(IDAF-4C)问卷的有效性。
    方法:本研究是通过2021年5月至2022年9月在GoogleForms平台上进行的在线问卷调查,对过去的患者及其熟人进行的便利样本。调查的部分是人口统计学特征,牙科焦虑量表,IDAF-4C+问卷,一个关于牙齿恐惧的问题,和以前的牙科治疗。
    结果:总计,239名参与者被纳入研究,平均年龄是37岁.IDAF-4C问卷具有良好的内部效度(Cronbachα为0.945)。IDAF-4C具有良好的收敛有效性,与牙科焦虑量表(r=0.825,p<0.001)和对去牙医的恐惧问题(r=0.738,p<0.001)呈正相关。问卷具有较好的信度,组内相关性为0.985。较低水平的牙科焦虑与缩放有关,正畸治疗,和牙科植入物。从恐惧症模块中删除第一个问题后,进行了验证性因素分析,在刺激模块的第4项和第9项之间添加了残差协方差,很适合IDAF-4C+保留的问题,按模块分组。
    结论:IDAF-4C+的罗马尼亚版本显示出可接受的心理测量特性。
    OBJECTIVE: The goal of this study was to assess the validity of the Romanian version of the Index of Dental Anxiety and Fear (IDAF-4C+) questionnaire.
    METHODS: This study was conducted on a convenience sample of past patients and their acquaintances through an online questionnaire administered on the Google Forms platform between May 2021 and September 2022. The sections of the survey were demographic characteristics, the dental anxiety scale questionnaire, the IDAF-4C+ questionnaire, a single question about dental fear, and previous dental treatments.
    RESULTS: In total, 239 participants were included in the study, and the mean age was 37. The IDAF-4C questionnaire had good internal validity (Cronbach alpha was 0.945). The IDAF-4C had good convergent validity, and it was positively correlated with the dental anxiety scale (r = 0.825, p < 0.001) and the question about the fear of going to the dentist (r = 0.738, p < 0.001). The questionnaire had good reliability, and the intraclass correlation was 0.985. Lower levels of dental anxiety were associated with scaling, orthodontic treatment, and dental implants. A confirmatory factor analysis was conducted after the removal of the first question from the phobia module, and residual covariance was added between items four and nine of the stimulus module, showing a good fit for the retained questions of the IDAF-4C+, grouped by module.
    CONCLUSIONS: The Romanian version of the IDAF-4C+ showed acceptable psychometric properties.
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  • 文章类型: Journal Article
    三端孢霉烯是在谷物和相关产品中检测到的最常见的镰刀菌毒素。A型单端孢霉烯是对食品和饲料安全最关注的真菌毒素之一,因为它们具有高毒性。最近,据报道,镰刀菌属中有两种不同的单端孢菌基因型。现有信息表明,Tri1和Tri16基因是T-2和DAS基因型的单端囊菌谱的关键决定因素。在这次审查中,研究了两种基因型中Tri1和Tri16基因的多态性。同时,讨论了参与DAS和NEO生物合成的基因的功能。本文提出了DAS和NEO可能的生物合成途径,这将有助于了解镰刀菌菌株中单端孢霉烯的合成过程,也可能激发研究人员设计和进行进一步的研究。一起,该综述提供了有关由镰刀菌产生的单端孢霉烯的结构多样化的三端基因进化过程的见解。
    Trichothecenes are the most common Fusarium toxins detected in grains and related products. Type A trichothecenes are among the mycotoxins of greatest concern to food and feed safety due to their high toxicity. Recently, two different trichothecene genotypes within Fusarium species were reported. The available information showed that Tri1 and Tri16 genes are the key determinants of the trichothecene profiles of T-2 and DAS genotypes. In this review, polymorphisms in the Tri1 and Tri16 genes in the two genotypes were investigated. Meanwhile, the functions of genes involved in DAS and NEO biosynthesis are discussed. The possible biosynthetic pathways of DAS and NEO are proposed in this review, which will facilitate the understanding of the synthesis process of trichothecenes in Fusarium strains and may also inspire researchers to design and conduct further research. Together, the review provides insight into trichothecene profile differentiation and Tri gene evolutionary processes responsible for the structural diversification of trichothecene produced by Fusarium.
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