Liquid

液体
  • 文章类型: Journal Article
    目的:左旋甲状腺素(L-T4)是治疗原发性甲状腺功能减退症的首选药物。L-T4片剂应在早餐前至少30分钟服用。一些研究表明,血清甲状腺谱不受随餐摄入液体/软凝胶L-T4的影响。我们的目的是审查关于治疗效果和患者对随餐服用L-T4的液体和软凝胶制剂的依从性的证据,还与标准片剂治疗方案相比,甲状腺功能减退患者。
    方法:我们通过搜索PubMed,Embase,和Cochrane图书馆数据库。PRISMA指南被应用,纳入研究的偏倚风险使用RoB2和ROBINS工具进行评估.方法学质量按照等级标准进行评估。
    结果:我们纳入了13项研究,占患者总数1697。从早餐开始摄入液体L-T4的时间不影响治疗的疗效。液体L-T4的吸收与不同的食物一起给药时没有发现显著差异,饮料,毒品,或其他补充。TSH水平不受早餐时服用软胶囊L-T4的影响;软胶囊和液体制剂的功效相似,但优于片剂配方。从早餐前30分钟服用的L-T4片剂转变为随餐服用的液体/软凝胶制剂可改善药物依从性和患者的生活质量。
    结论:L-T4的液体和软胶囊配方可以在早餐或接近餐时服用,不失去治疗效果。与早餐前30分钟服用的L-T4片剂治疗相比,这些制剂还可以改善患者的依从性和生活质量。
    OBJECTIVE: Levothyroxine (L-T4) is the drug of choice for treating primary hypothyroidism. L-T4 tablets should be taken at least 30 min before breakfast. Several studies have suggested that serum thyroid profile is not affected by concomitant intake of liquid/softgel L-T4 with meals. Our aim is to review the evidence on therapeutic efficacy and patient compliance with the liquid and softgel formulation of L-T4 taken with meals, also compared with the standard tablet therapy regimen, in hypothyroid patients.
    METHODS: We performed a systematic review of literature by searching PubMed, Embase, and Cochrane Library databases. PRISMA guidelines were applied, and the risk of bias of the included studies was assessed using the RoB 2 and ROBINS tools. The methodological quality was assessed following the GRADE criteria.
    RESULTS: We included 13 studies, accounting for a total of 1697 patients. The timing of liquid L-T4 intake from breakfast did not affect the therapeutic efficacy of the treatment. No significant differences in the absorption of liquid L-T4 were found when administered together with different foods, beverages, drugs, or other supplements. TSH levels are not influenced by taking softgel L-T4 at breakfast; the efficacy of softgel and liquid formulation is similar when they are taken with a meal, but superior to that of tablet formulation. Shifting from L-T4 tablets taken 30 min before breakfast to liquid/softgel formulation taken with the meal improved medication adherence and perceived quality of life of patients.
    CONCLUSIONS: Liquid and softgel formulation of L-T4 can be taken at breakfast or close to meals, without losing therapeutic efficacy. These formulations could also improve patient compliance and quality of life compared to L-T4 tablet therapy taken 30 min before breakfast.
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  • 文章类型: Journal Article
    背景:电子烟(ECIG)设备和液体特性的自我报告并不总是准确的或与研究人员测量的特性一致。比较了两种测量ECIG特征的方法:用户自我报告和评分者编码的图片。
    方法:独家ECIG用户(N=321)在设备上报告(一次性,可再填充,可调功率,品牌)和液体(尼古丁浓度,配方,风味)特性。要测量设备类型,他们选择了最能描述他们的设备的术语(“类似的,\"\"vape笔,\"\"mod,\"\"pod,\“\”不知道\”)和最类似于他们设备的图片(cig-like,vape笔,boxmod,USB形状的吊舱,泪滴形豆荚,none).受访者上传设备和液体图片,和独立的评估者编码这些相同的特征。方法之间的一致性用科恩的kappa和类内相关性进行了检验,包括“不知道”的回答,包括和排除在分析之外。
    结果:无论如何处理“不知道”的反应,一次性协议最高(95.3-97.7%),可再填充(96.3%),可调功率(83.6-88.7%),和品牌(77.9-80.4%),和较低的尼古丁浓度(72.7%),尼古丁配方(58.6-79.4%),和风味(66.2%)。对于设备类型,使用基于术语(67.9-78.8%)和基于图片相似性(71.7%)的项目时,协议是中等的。对于条款,最大的差异是根据自我报告归类为“vapepens”的设备;其中,70.6%被评分者归类为“豆荚”。对于图片相似性,13%的用户报告说他们的设备与任何图片都不相似;评估者将这些设备分类为USB形pod(50.0%)和mods(23.8%)。
    结论:自我报告可能足以衡量某些特征(品牌,一次性的,可再填充,可调功率),但不是其他(尼古丁浓度和配方,和一些味道)。
    BACKGROUND:  Self-reports of electronic cigarette (ECIG) device and liquid characteristics are not always accurate or consistent with characteristics as measured by researchers. Two methods for measuring ECIG characteristics were compared: user self-reports and rater-coded pictures.
    METHODS:  Exclusive ECIG users (N = 321) reported on device (disposable, refillable, adjustable power, brand) and liquid (nicotine concentration, formulation, flavor) characteristics. To measure device type, they chose the term that best described their device (\"cig-alike,\" \"vape pen,\" \"mod,\" \"pod,\" \"don\'t know\") and the picture that best resembled their device (cig-alike, vape pen, box mod, USB-shaped pod, teardrop-shaped pod, none). Respondents uploaded device and liquid pictures, and independent raters coded these same features. Agreement between methods was examined with Cohen\'s kappa and intra-class correlations, including with \"don\'t know\" responses included and excluded from analyses.
    RESULTS:  Regardless of how \"don\'t know\" responses were treated, agreement was highest for disposable (95.3-97.7%), refillable (96.3%), adjustable power (83.6-88.7%), and brand (77.9-80.4%), and lower for nicotine concentration (72.7%), nicotine formulation (58.6-79.4%), and flavor (66.2%). For device type, agreement was moderate using both term-based (67.9-78.8%) and picture resemblance-based (71.7%) items. For terms, the greatest discrepancy was for devices classified as \"vape pens\" by self-reports; of these, 70.6% were classified as \"pods\" by raters. For picture resemblance, ∼13% of users reported that their device resembled none of the pictures; raters classified these devices as USB-shaped pods (50.0%) and mods (23.8%).
    CONCLUSIONS:  Self-reports may be sufficient for measuring some characteristics (brand, disposable, refillable, adjustable power), but not others (nicotine concentration and formulation, and some flavor).
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  • 文章类型: Journal Article
    自2000年代初以来,高通量蛋白质组学已成为一个令人兴奋的领域和现代医学的潜在前沿。虽然在该领域的技术方面取得了重大进展,将蛋白质组学转化为临床应用一直具有挑战性。这篇综述总结了高通量蛋白质组学临床应用的最新进展,并讨论了相关的挑战。优势,和未来的方向。重点介绍高通量蛋白质组学在乳腺癌中的研究进展和临床应用,膀胱癌,喉鳞状细胞癌,胃癌,结直肠癌,2019年冠状病毒病。高通量蛋白质组学的未来应用将面临诸如蛋白质性质变化等挑战,统计建模的局限性,数据存储的技术和后勤困难,一体化,和协调,以及临床验证和注意事项的监管要求。然而,高通量蛋白质组学有几个值得注意的优点,包括新的全球蛋白质网络的鉴定,新蛋白质的发现,以及与其他组学数据的协同整合。我们期待参与并拥抱高通量蛋白质组学的未来进展,例如基于蛋白质组学的单细胞生物学及其临床应用,个体化蛋白质组学,病理学信息学,数字病理学,和高通量蛋白质组学的深度学习模型。一些新的蛋白质组学技术值得注意,包括独立于数据的采集质谱,基于纳米孔的蛋白质组学,4-D蛋白质组学,和二次离子质谱。总之,我们相信高通量蛋白质组学将彻底改变转化研究的范式,临床实践,和公共卫生在不久的将来。
    High-throughput proteomics has become an exciting field and a potential frontier of modern medicine since the early 2000s. While significant progress has been made in the technical aspects of the field, translating proteomics to clinical applications has been challenging. This review summarizes recent advances in clinical applications of high-throughput proteomics and discusses the associated challenges, advantages, and future directions. We focus on research progress and clinical applications of high-throughput proteomics in breast cancer, bladder cancer, laryngeal squamous cell carcinoma, gastric cancer, colorectal cancer, and coronavirus disease 2019. The future application of high-throughput proteomics will face challenges such as varying protein properties, limitations of statistical modeling, technical and logistical difficulties in data deposition, integration, and harmonization, as well as regulatory requirements for clinical validation and considerations. However, there are several noteworthy advantages of high-throughput proteomics, including the identification of novel global protein networks, the discovery of new proteins, and the synergistic incorporation with other omic data. We look forward to participating in and embracing future advances in high-throughput proteomics, such as proteomics-based single-cell biology and its clinical applications, individualized proteomics, pathology informatics, digital pathology, and deep learning models for high-throughput proteomics. Several new proteomic technologies are noteworthy, including data-independent acquisition mass spectrometry, nanopore-based proteomics, 4-D proteomics, and secondary ion mass spectrometry. In summary, we believe high-throughput proteomics will drastically shift the paradigm of translational research, clinical practice, and public health in the near future.
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  • 文章类型: Journal Article
    牛白血病病毒(BLV)在世界范围内流行,在养牛业造成严重问题。BLV前病毒载量(PVL)是评估疾病进展和传播风险的有用指标。我们先前开发了一种定量实时PCR(qPCR)测定法,以使用共同基序(CoCoMo)简并引物的配位来测量PVL。这里,我们构建了一种新型的双链BLV-CoCoMoqPCR测定法,该测定法可以使用FAM标记的BLVLTR基因的MGB探针和VIC标记的BoLA-DRA基因的MGB探针同时扩增两个基因。这种液体双重测定在现场样品中保持了其原始的灵敏度和再现性。此外,我们开发了一种由优化的液体双链体测定所必需的PCR试剂组成的干双链体测定。我们观察到使用干和液体双重测定法测量的PVL之间的强正相关。验证分析表明,干双链测定的灵敏度略低于其他方法检测的BLV分子克隆,但是对于82个现场样品的PVL定量,它显示出与单重测定相似的灵敏度,并且比液体双重测定的灵敏度略高。因此,我们的液体和干双重测定法可用于测量现场样品中的BLVPVL,类似于原始的单重测定。
    Bovine leukemia virus (BLV) is prevalent worldwide, causing serious problems in the cattle industry. The BLV proviral load (PVL) is a useful index for estimating disease progression and transmission risk. We previously developed a quantitative real-time PCR (qPCR) assay to measure the PVL using the coordination of common motif (CoCoMo) degenerate primers. Here, we constructed a novel duplex BLV-CoCoMo qPCR assay that can amplify two genes simultaneously using a FAM-labeled MGB probe for the BLV LTR gene and a VIC-labeled MGB probe for the BoLA-DRA gene. This liquid duplex assay maintained its original sensitivity and reproducibility in field samples. Furthermore, we developed a dry duplex assay composed of PCR reagents necessary for the optimized liquid duplex assay. We observed a strong positive correlation between the PVLs measured using the dry and liquid duplex assays. Validation analyses showed that the sensitivity of the dry duplex assay was slightly lower than that of the other methods for the detection of a BLV molecular clone, but it showed similar sensitivity to the singleplex assay and slightly higher sensitivity than the liquid duplex assay for the PVL quantification of 82 field samples. Thus, our liquid and dry duplex assays are useful for measuring the BLV PVL in field samples, similar to the original singleplex assay.
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  • 文章类型: Journal Article
    纳米结构学的方法论是使用纳米原子,分子,和纳米物体,就像建筑一样。纳米建筑学通过整合相关领域来追求材料科学的终极概念。在这篇综述论文中,在界面交互式纳米建筑学的标题下,将讨论结构制造和接口功能开发的几个例子,突出了考虑纳米级架构材料的重要性。两个部分在固体和液体表面提供了一些示例。在固体界面环境中,分子结构可以精确地观察和分析与理论计算。固体表面是分子水平的纳米结构的主要部位。固体表面的纳米结构学有可能为基于先进的观察和分析的尖端功能和科学铺平道路。液体表面比固体界面更具动力学和动态性,和他们的高流动性提供了许多可能性的结构制造的纳米结构。后一种特征在相互作用的自由和组件的多样性方面具有优势,因此,液体表面可能是更适合功能开发的环境。最后一部分然后讨论了在纳米结构学中材料创造的未来需要什么。
    The methodology of nanoarchitectonics is to construct functional materials using nanounits such as atoms, molecules, and nanoobjects, just like architecting buildings. Nanoarchitectonics pursues the ultimate concept of materials science through the integration of related fields. In this review paper, under the title of interface-interactive nanoarchitectonics, several examples of structure fabrication and function development at interfaces will be discussed, highlighting the importance of architecting materials with nanoscale considerations. Two sections provide some examples at the solid and liquid surfaces. In solid interfacial environments, molecular structures can be precisely observed and analyzed with theoretical calculations. Solid surfaces are a prime site for nanoarchitectonics at the molecular level. Nanoarchitectonics of solid surfaces has the potential to pave the way for cutting-edge functionality and science based on advanced observation and analysis. Liquid surfaces are more kinetic and dynamic than solid interfaces, and their high fluidity offers many possibilities for structure fabrications by nanoarchitectonics. The latter feature has advantages in terms of freedom of interaction and diversity of components, therefore, liquid surfaces may be more suitable environments for the development of functionalities. The final section then discusses what is needed for the future of material creation in nanoarchitectonics.
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  • 文章类型: Journal Article
    检测液体到冰的转变对于许多应用来说是一个重要的挑战。在本文中,提出并测试了一种多参数表征液到冰相变的方法。该方法基于体声波(BAW)的基本特性。垂直剪切(SV)或水平剪切(SH)极化的BAWs不能在液体中传播,只有在固体如冰。具有纵向(L)极化的BAWs,然而,可以在液体和固体中传播,但是速度和衰减不同。L-BAW和SV-BAW的速度和衰减是在冰中使用诸如时间延迟和波幅等参数在1-37MHz的频率范围内测量的。基于这些测量,确定了瑞利表面声波的相关参数和冰的泊松模量。还沿其长度检测冰样品的均匀性。已经开发并测试了双传感器,以同时分析两种液体中的两相变。使用蒸馏水和0.9%NaCl水溶液作为实例。
    The detection of the liquid-to-ice transition is an important challenge for many applications. In this paper, a method for multi-parameter characterization of the liquid-to-ice phase transition is proposed and tested. The method is based on the fundamental properties of bulk acoustic waves (BAWs). BAWs with shear vertical (SV) or shear horizontal (SH) polarization cannot propagate in liquids, only in solids such as ice. BAWs with longitudinal (L) polarization, however, can propagate in both liquids and solids, but with different velocities and attenuations. Velocities and attenuations for L-BAWs and SV-BAWs are measured in ice using parameters such as time delay and wave amplitude at a frequency range of 1-37 MHz. Based on these measurements, relevant parameters for Rayleigh surface acoustic waves and Poisson\'s modulus for ice are determined. The homogeneity of the ice sample is also detected along its length. A dual sensor has been developed and tested to analyze two-phase transitions in two liquids simultaneously. Distilled water and a 0.9% solution of NaCl in water were used as examples.
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  • 文章类型: Journal Article
    从理论上研究了基于声光学第一原理的液体的弹光特性。获得了仅使用折射率计算液体的弹光常数的关系。确定了与极性和非极性液体的最大弹光常数相对应的折射率值。进行约100种液体的计算并与已知的实验数据进行比较。这项研究大大扩展了我们对声光效应的理解,并在预测液体的弹光常数和估计其波长色散方面具有实际应用。
    The elasto-optic properties of liquids on the basis of the first principles of acousto-optics were theoretically investigated. A relationship for calculating the elasto-optic constant of liquids using only the refractive index was obtained. The refractive index values corresponding to the maximum elasto-optic constant for polar and nonpolar liquids were determined. Calculations for about 100 liquids were performed and compared with known experimental data. This study significantly extends our understanding of the acousto-optic effect and has practical applications for predicting the elasto-optic constant of a liquid and estimating its wavelength dispersion.
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  • 文章类型: Journal Article
    界面在乳液体系的稳定性和功能中起着至关重要的作用。新型乳液体系的快速发展(例如,水-水乳液,水-油凝胶乳液,水凝胶-油凝胶乳液)带来了界面工程的巨大进步。这些新接口,不同于传统的水-油界面,并且彼此不同,扩大了食品乳液的应用,也带来了稳定乳液的挑战。我们全面总结了各种结构接口(由混合层稳定,多层,粒子,纳米液滴,微凝胶等.),和它们的特点,和设计策略。我们还讨论了这些界面在稳定液-液(水-油,水-水,油-油,酒精油,等。),液体凝胶,和凝胶-凝胶乳液系统。还提出了关于不同乳液的界面工程的挑战和未来研究方面。乳液是界面主导的材料,并且接口具有动态性质,因为组成和结构不是恒定的。生物聚合物,粒子,纳米液滴,微凝胶吸收到界面上的能力不同,为了调整界面上的结构,降低界面张力,并稳定不同的乳液。界面和本体相之间的相互作用不仅影响界面的性质,还有两个阶段,导致乳液的不同功能。这些结构化界面已单独或协同使用以实现不同乳液体系的有效稳定或更好的应用。然而,消化过程中界面的动态变化知之甚少,它仍然是具有挑战性的全面表征接口。
    Interfaces play essential roles in the stability and functions of emulsion systems. The quick development of novel emulsion systems (e.g., water-water emulsions, water-oleogel emulsions, hydrogel-oleogel emulsions) has brought great progress in interfacial engineering. These new interfaces, which are different from the traditional water-oil interfaces, and are also different from each other, have widened the applications of food emulsions, and also brought in challenges to stabilize the emulsions. We presented a comprehensive summary of various structured interfaces (stabilized by mixed-layers, multilayers, particles, nanodroplets, microgels etc.), and their characteristics, and designing strategies. We also discussed the applicability of these interfaces in stabilizing liquid-liquid (water-oil, water-water, oil-oil, alcohol-oil, etc.), liquid-gel, and gel-gel emulsion systems. Challenges and future research aspects were also proposed regarding interfacial engineering for different emulsions. Emulsions are interface-dominated materials, and the interfaces have dynamic natures, as the compositions and structures are not constant. Biopolymers, particles, nanodroplets, and microgels differed in their capacity to get absorbed onto the interface, to adjust their structures at the interface, to lower interfacial tension, and to stabilize different emulsions. The interactions between the interface and the bulk phases not only affected the properties of the interface, but also the two phases, leading to different functions of the emulsions. These structured interfaces have been used individually or cooperatively to achieve effective stabilization or better applications of different emulsion systems. However, dynamic changes of the interface during digestion are only poorly understood, and it is still challenging to fully characterize the interfaces.
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  • 文章类型: Journal Article
    对液体硫非弹性X射线散射(IXS)实验进行了低于(140摄氏度)和高于(180摄氏度)的聚合温度Tλ约159摄氏度,以调查这种独特液体的集体动力学变化,表现出液体-液体转变。如前所述,在两个温度下都观察到宽的纵向声激励信号,当温度越过转变温度时,只有准弹性峰的宽度略有减小。在简单的稀疏建模的帮助下,使用具有一个热和两个粘弹性衰变通道的记忆功能的广义Langevin形式主义进行了模型分析,观察到与流体动力声速的大的正偏差为51-54%。快速粘弹性弛豫时间τµ接近环和链结构中局部硫连接的分子间拉伸和弯曲运动的相关时间,与其他分子液体相似。在整个λ跃迁上的IXS光谱中的小对比仅导致记忆函数的慢粘弹性衰减时间τα发生大的变化。140°C时的τα值与S8分子的内部/外部混合扭转模式很好地匹配,而在180°C时没有相应的分子运动模式。运动粘度值大于宏观剪切粘度的最小值,在指示大Q0极限时,预计在GHz和MHz激发状态下Q会发生很多弛豫动力学变化。 .
    Inelastic x-ray scattering (IXS) experiments on liquid sulphur were carried out below (140 ∘C) and above (180 ∘C) the polymerisation temperatureTλof about 159 ∘C to investigate changes in the collective dynamics of this unique liquid, that exhibits a liquid-liquid transition. As reported earlier, broad longitudinal acoustic excitation signals were observed at both temperatures, and only the width of the quasielastic peaks slightly decreased when the temperature crossed the transition temperature. A model analysis was performed using a generalised Langevin formalism with a memory function having one thermal and two viscoelastic decay channels with the help of simple sparse modelling, and large positive deviations from the hydrodynamic sound velocity by 51%-54% were observed. The fast viscoelastic relaxation timeτµis close to the correlation times of intermolecular stretching and bending motions of local sulphur connections in both ring and chain structures, and is similar to those of other molecular liquids. The small contrasts in the IXS spectra across theλtransition result in large changes in only the slow viscoelastic decay timeταof the memory function. Theταvalue at 140 ∘C matches the mixed internal/external torsional modes of S8molecules well, whereas that at 180 ∘C has no corresponding molecular motion mode. The kinematic viscosity values at theQ→0limit are much smaller than the minimum values of macroscopic shear viscosity, indicating that large changes in relaxation dynamics are expected withQin the GHz and MHz excitation regimes.
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  • 文章类型: Journal Article
    本研究旨在使用基于线圈或液体材料的方法对计算机断层扫描(CT)引导的肺结节(PNs)定位的相对临床疗效和安全性进行汇总比较。
    截至2023年7月发表的相关文章在WebofScience中被发现,PubMed,和万方数据库,然后对相关终点进行汇总分析.
    本荟萃分析纳入了6篇文献,分别纳入了287名患者(341名PNs)和247名患者(301名PNs),这些患者在电视胸腔镜手术(VATS)之前分别接受了基于线圈和液体材料的CT引导定位程序。与线圈组相比,液体材料组显示出明显更高的合并成功定位率(p=0.01)。合并的总并发症发生率(p=0.0008)和气胸发生率(p=0.01)显著降低.两组均表现出相似的肺出血率(p=0.44)和成功的楔形切除术(p=0.26)。基于液体的定位也与合并定位和VATS程序持续时间的显着减少相关(p=0.004和0.007)。
    这些数据与使用液体材料进行的CT引导定位程序一致,在VATS切除前,患者使用基于线圈的定位更安全,更有效。
    UNASSIGNED: This study was designed to conduct pooled comparisons of the relative clinical efficacy and safety of computed tomography (CT)-guided localization for pulmonary nodules (PNs) using either coil- or liquid material-based approaches.
    UNASSIGNED: Relevant articles published as of July 2023 were identified in the Web of Science, PubMed, and Wanfang databases, and pooled analyses of relevant endpoints were then conducted.
    UNASSIGNED: Six articles that enrolled 287 patients (341 PNs) and 247 patients (301 PNs) that had respectively undergone CT-guided localization procedures using coil- and liquid material-based approaches prior to video-assisted thoracic surgery (VATS) were included in this meta-analysis. The liquid material group exhibited a significantly higher pooled successful localization rate as compared to the coil group (p = 0.01), together with significantly lower pooled total complication rates (p = 0.0008) and pneumothorax rates (p = 0.01). Both groups exhibited similar rates of pulmonary hemorrhage (p = 0.44) and successful wedge resection (p = 0.26). Liquid-based localization was also associated with significant reductions in pooled localization and VATS procedure durations (p = 0.004 and 0.007).
    UNASSIGNED: These data are consistent with CT-guided localization procedures performed using liquid materials being safer and more efficacious than coil-based localization in patients with PNs prior to VATS resection.
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