population analysis

人口分析
  • 文章类型: Journal Article
    目的:奥希替尼是第三代药物,不可逆转的,中枢神经系统活跃,表皮生长因子受体(EGFR)酪氨酸激酶抑制剂(TKI)对EGFR突变的非小细胞肺癌(NSCLC)有效。我们评估了血浆奥希替尼水平与其疗效和安全性事件之间的关系。
    方法:利用一线的稳态曲线下面积(AUCss)数据进行全面的药代动力学暴露-反应(E-R)建模,来自奥希替尼临床开发计划的≥二线和辅助研究(每天一次给药20-240mg;N=1689名患者)。使用比例风险模型对生存进行分析;使用惩罚逻辑回归模型对间质性肺病(ILD)和左心室射血分数(LVEF)事件进行分析;使用描述性分析对皮疹和腹泻事件进行分析。
    结果:E-R模型分析表明,随着奥希替尼AUCss的增加,疗效没有明显的增加趋势;所有暴露四分位数的疗效均明显优于对照组(比较EGFR-TKI,化疗或安慰剂)与治疗线无关。基于模型的分析表明,奥希替尼暴露量增加与ILD事件发生概率增加之间存在潜在关系,主要是日本患者。此外,出现皮疹或腹泻的概率随着奥希替尼暴露量的增加而增加.对于奥希替尼≤80mg和对照组,LVEF事件的概率显示重叠的置信区间。
    结论:EGFR突变的非小细胞肺癌患者的E-R模型显示,奥希替尼暴露增加不太可能提高疗效,但可能会增加某些不良事件的发生。因此,剂量≥80mg的长期治疗预计不会带来额外的获益.
    OBJECTIVE: Osimertinib is a third-generation, irreversible, central nervous system-active, epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) with efficacy in EGFR-mutated non-small cell lung cancer (NSCLC). We assessed the relationship between plasma osimertinib levels and its efficacy and safety events.
    METHODS: Comprehensive pharmacokinetics exposure-response (E-R) modelling was performed utilizing steady state area under the curve (AUCss) data from first-line, ≥second-line and adjuvant studies from the osimertinib clinical development programme (20-240 mg once-daily dosing; N = 1689 patients). Analyses were conducted for survival using a proportional hazard model; for interstitial lung disease (ILD) and left ventricular ejection fraction (LVEF) events using a penalized logistic regression model and graphical analysis of potential confounding factors; and for rash and diarrhoea events using descriptive analysis.
    RESULTS: E-R modelling analyses indicated no clear trend of increasing efficacy with increasing osimertinib AUCss; efficacy in all exposure quartiles was significantly better than the control arm (comparator EGFR-TKI, chemotherapy or placebo) irrespective of treatment line. Model-based analysis suggested a potential relationship between increased osimertinib exposure and increased probability of ILD events, predominantly in Japanese patients. Additionally, there were increased probabilities of rash or diarrhoea with increasing osimertinib exposure. The probability of LVEF events showed overlapping confidence intervals for osimertinib ≤80 mg and control.
    CONCLUSIONS: E-R modelling in patients with EGFR-mutated NSCLC demonstrated that increased osimertinib exposure was unlikely to increase efficacy but may increase occurrence of certain adverse events. Hence, long-term treatment with doses ≥80 mg was not expected to provide additional benefit.
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  • 文章类型: Journal Article
    金属卤化物钙钛矿是受欢迎程度急剧增加的晶体材料,并迅速成为光电器件应用的主要竞争者。在这项工作中,我们提供了可能的新颖候选的光电特征,基于ZSnCl3(Z=Na/K)Sn的详细数值模拟。将当前计算的输出与当前可用的结果进行比较,并注意到一个值得尊敬的协议。所研究的化合物本质上是立方的,结构稳定。机械性能反映了所提出材料的机械稳定性和延展性。本研究中提出的基于Sn的单钙钛矿化合物具有机械稳定性和延展性。NaSnCl3和KSnCl3的窄直接带隙为1.36eV和1.47eV,分别,使用HSE06混合功能与集成在QuantumESPRESSO(QE)软件中的Boltztrp2。通过在0-20eV的光子能量范围内进行的光吸收光谱测量,证实了这些化合物在钙钛矿太阳能电池和其他光电应用中的有效使用。
    Metal halide perovskites are crystalline materials with a sharp increase in popularity and rapidly becoming a major contender for optoelectronic device applications. In this work, we provide the optoelectronic features of a possible novel candidate, ZSnCl3 (Z = Na/K) Sn-based on a detailed numerical simulation. The output of the current computations is compared to the results that are currently available, and a respectable agreement is noted. The studied compounds were cubic in nature and structurally stabe. The mechanical properties reflect the mechanical stability and ductility of the proposed materials. The Sn-based single perovskite compounds proposed in this study are mechanically stable and ductile. The narrow direct band gap for NaSnCl3 and KSnCl3 are 1.36 eV and 1.47 eV, respectively, using the HSE06 hybrid function with the Boltztrp2 integrated in Quantum ESPRESSO (QE) software. The effective use of these compounds in perovskite solar cells and other optoelectronic applications was confirmed by optical absorption spectral measurements conducted in the photon energy range of 0-20 eV.
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  • 文章类型: Journal Article
    暂无摘要。
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  • 文章类型: Journal Article
    将感官输入及其后果联系起来是一种基本的大脑操作。在行为期间,新皮层和边缘系统的神经活动通常反映感觉和任务相关变量的动态组合,这些“混合表示”被认为对感知很重要,学习,和可塑性。然而,这种综合计算可能发生在前脑之外的程度尚不清楚。这里,我们在下丘(IC)的浅表“壳”层中进行细胞分辨率双光子Ca2成像,作为任何性别的头部固定小鼠执行基于奖励的心理测量听觉任务。我们发现单个壳IC神经元的活动共同反映了听觉线索,老鼠的行动,和行为试验结果,这样,神经群体活动的轨迹根据小鼠的行为选择而不同。因此,在shellIC神经元活动上训练的简单分类器模型可以预测逐个试验的结果,即使训练数据仅限于在小鼠的器械作用之前发生的神经活动。因此,表现老鼠,听觉中脑神经元传递一种反映声音联合表示的群体代码,行动,和任务相关变量。意义陈述在IC的表面“壳”层中的神经元优先投射到由声音及其后果强烈激活的高阶丘脑核,从而结合感官和任务相关信息。这种感觉-行为整合被认为对各种行为相关功能至关重要,例如建立学习的合理价。然而,这种“混合表示”是否反映了丘脑皮层网络的独特性质,或者更确切地说存在于其他地区,不清楚。我们证明了在表现老鼠时,许多外壳IC神经元是由声音和老鼠的动作调制的。因此,shellIC群体活动足以在奖励行动之前预测试验结果。因此,我们的数据将壳IC核确定为与行为相关的混合表征的新颖场所。
    Linking sensory input and its consequences is a fundamental brain operation. During behavior, the neural activity of neocortical and limbic systems often reflects dynamic combinations of sensory and task-dependent variables, and these \"mixed representations\" are suggested to be important for perception, learning, and plasticity. However, the extent to which such integrative computations might occur outside of the forebrain is less clear. Here, we conduct cellular-resolution two-photon Ca2+ imaging in the superficial \"shell\" layers of the inferior colliculus (IC), as head-fixed mice of either sex perform a reward-based psychometric auditory task. We find that the activity of individual shell IC neurons jointly reflects auditory cues, mice\'s actions, and behavioral trial outcomes, such that trajectories of neural population activity diverge depending on mice\'s behavioral choice. Consequently, simple classifier models trained on shell IC neuron activity can predict trial-by-trial outcomes, even when training data are restricted to neural activity occurring prior to mice\'s instrumental actions. Thus, in behaving mice, auditory midbrain neurons transmit a population code that reflects a joint representation of sound, actions, and task-dependent variables.
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  • 文章类型: Journal Article
    背景:提出了许多关于美丽臀部概念的理论,但是几乎没有被证明,尤其是亚洲集团。
    目的:分析中国人群对审美愉悦特征的审美偏好。
    方法:在调查中,我们通过Photoshop软件(AdobePhotoshopCS5;AdobeSystems,Inc.,圣何塞,Calif),臀部有和没有四个特征。进行了在线问卷调查,对最美观的臀部进行排名。使用Pearson卡方检验比较了各个人口统计学组的数据。p<0.05的值用于统计显著性。
    结果:总计,收集了2348个响应。超过一半的受访者更喜欢没有上黄体花盆(56.9%),V形折痕(60.4%)和侧向凹陷(90.1%)。最吸引人的黄体折叠选择是短型(34.9%),其次是中位黄体下褶皱(32.7%)和长黄体下褶皱(32.4%)。黄体上的人工林,在年轻人中,更喜欢中位或长的黄体下褶皱和V形折痕。
    结论:Supraglutealfossettes,超过一半的受访者不喜欢V形折痕和横向凹陷。审美偏好受性别和年龄的影响。整形外科医生在建立臀部美观的美学目标时应考虑上述变化。
    方法:本期刊要求作者为每篇文章分配一定程度的证据。对于这些循证医学评级的完整描述,请参阅目录或在线作者说明www。springer.com/00266.
    BACKGROUND: Many theories referring to the conception of a beautiful buttock have been put forward, but little has been proved, especially in the Asian group.
    OBJECTIVE: To analyse the aesthetic preference for aesthetically pleasing characteristics in the Chinese population.
    METHODS: In the survey, we computerized the buttock image of a Chinese female through the Photoshop software (Adobe Photoshop CS5; Adobe Systems, Inc., San Jose, Calif), and buttocks with and without four features were attained. An online questionnaire was made to rank the most aesthetic buttocks. The data for the various demographic groups were compared using the Pearson Chi-square test. A value of p < 0.05 was used for statistical significance.
    RESULTS: In total, 2348 responses were collected. Over half of the respondents prefer without supragluteal fossettes (56.9%), V-shaped crease (60.4%) and lateral depression (90.1%). The most attractive infragluteal fold option was short type (34.9%), followed by median infragluteal fold (32.7%) and long infragluteal fold (32.4%). Supragluteal fossettes, median or long infragluteal fold and V-shaped crease were more preferred among young people.
    CONCLUSIONS: Supragluteal fossettes, V-shaped crease and lateral depressions were not preferred in over half of the respondents. The aesthetic preference was influenced by the gender and age. The plastic surgeons should consider the variabilities above when establishing aesthetic aim for beautiful buttocks in gluteoplasty.
    METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
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  • 文章类型: Journal Article
    红树林是沿海和河口生态系统的重要组成部分,它们是海洋物种的苗圃,并防止海岸侵蚀。在这里,我们报告了Sonneratiaovata的基因组,这是一个真正的红树林,生长在河口环境中,可以忍受适度的盐暴露。我们对S.ovata基因组进行了测序,并通过使用Hi-C将其组装到染色体水平的支架中。基因组为212.3Mb,包含12条染色体,大小范围为12.2至23.2Mb。注释确定了29,829个基因,BUSCO完整性为95.9%。我们鉴定了盐基因,并发现了盐基因的拷贝数扩增,例如ADP-核糖基化因子1和延伸因子1-α。种群分析发现S.ovata中的遗传变异水平较低,缺乏种群结构。
    Mangroves are an important part of coastal and estuarine ecosystems where they serve as nurseries for marine species and prevent coastal erosion. Here we report the genome of Sonneratia ovata, which is a true mangrove that grows in estuarine environments and can tolerate moderate salt exposure. We sequenced the S. ovata genome and assembled it into chromosome-level scaffolds through the use of Hi-C. The genome is 212.3 Mb and contains 12 chromosomes that range in size from 12.2 to 23.2 Mb. Annotation identified 29,829 genes with a BUSCO completeness of 95.9%. We identified salt genes and found copy number expansion of salt genes such as ADP-ribosylation factor 1, and elongation factor 1-alpha. Population analysis identified a low level of genetic variation and a lack of population structure within S. ovata.
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  • 文章类型: Journal Article
    目的:本研究的目的是表征AZD8233的群体药代动力学,AZD8233是一种反义寡核苷酸(ASO),靶向PCSK9转录本,以减少肝细胞PCSK9蛋白的产生和血浆水平。AZD8233利用第2.5代S限制的乙基基序(cET)化学,并与三触角N-乙酰半乳糖胺(GalNAc3)配体缀合,用于靶向肝细胞摄取。
    方法:利用NONMEM软件的非线性混合效应建模方法应用于来自4项1-2期研究的219名参与者的3416个样本的AZD8233浓度-时间数据,健康志愿者1例(NCT03593785),血脂异常患者3例(NCT04155645,NCT04641299和NCT04823611)。
    结果:最终模型描述了来自健康志愿者或血脂异常参与者的四项1-2期研究的AZD8233血浆浓度-时间曲线,涵盖4至120毫克的剂量范围。AZD8233的药代动力学通过具有一级吸收的两室模型充分描述。通过非线性Michaelis-Menten消除(最大消除率,9.9mg/h[12%相对标准误差];浓度产生半最大消除率,4.8mg/L[18%相对标准误差])。体重,性别,估计的肾小球滤过率和疾病状态(健康参与者与血脂异常患者)被确定为影响AZD8233暴露的因素。
    结论:协变量分析显示,体重是影响AZD8233暴露的主要因素,这在很大程度上解释了亚洲人群相对于非亚洲人观察到的更高的Cmax。
    OBJECTIVE: The aim of this study was to characterize the population pharmacokinetics of AZD8233, an antisense oligonucleotide (ASO) that targets the PCSK9 transcript to reduce hepatocyte PCSK9 protein production and plasma levels. AZD8233 utilizes generation 2.5 S-constrained ethyl motif (cET) chemistry and is conjugated to a triantennary N-acetylgalactosamine (GalNAc3) ligand for targeted hepatocyte uptake.
    METHODS: A non-linear mixed-effect modelling approach utilizing NONMEM software was applied to AZD8233 concentration-time data from 3416 samples in 219 participants from four phase 1-2 studies, one in healthy volunteers (NCT03593785) and three in patients with dyslipidaemia (NCT04155645, NCT04641299 and NCT04823611).
    RESULTS: The final model described the AZD8233 plasma concentration-time profile from four phase 1-2 studies in healthy volunteers or participants with dyslipidaemia, covering a dose range of 4 to 120 mg. The pharmacokinetics of AZD8233 were adequately described by a two-compartment model with first-order absorption. The supra-proportional increase in maximum plasma concentration (Cmax) across the observed dose range was described by non-linear Michaelis-Menten elimination (maximum elimination rate, 9.9 mg/h [12% relative standard error]; concentration yielding half-maximal elimination rate, 4.8 mg/L [18% relative standard error]). Body weight, sex, estimated glomerular filtration rate and disease status (healthy participant vs. patient with dyslipidaemia) were identified as factors affecting exposure to AZD8233.
    CONCLUSIONS: Covariate analysis showed body weight to be the main factor affecting exposure to AZD8233, which largely explained the higher Cmax observed in the Asian population relative to non-Asians.
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  • 文章类型: Journal Article
    胡须秃鹰(Gypaetusbarbatus)是一种濒危物种,具有专门的食骨(骨)饮食。我们估计了这种秃鹰在阿拉贡比利牛斯山脉的生存和生产力,在欧洲发现了该物种的主要种群。我们使用了一个涵盖33年(1987-2020年)的数据库。为了估计生存的可能性,我们用贝叶斯方法使用Cormack-Jolly-Seber模型。我们的模型估计青少年的存活率为0.90±0.08,亚成人为0.95±0.04,成人为0.92±0.05。在研究期间,成年人和亚成年人的生存概率增加,而青少年则没有。相比之下,同期生产率下降。我们的研究提供了有关对该物种非常重要的两个人口统计学参数的状态的最新信息,并使我们能够确定最脆弱的年龄段,并计划保护行动以改善该物种在该地区的状况。重新引入项目的标本。估计的生存值表明,在根据物种的使用情况计划这些喂食点时,应更加谨慎。
    The bearded vulture (Gypaetus barbatus) is an endangered species with a specialist osteophagous (bone) diet. We estimated the survival and productivity of this vulture in the Aragonese Pyrenees, where the main population of the species in Europe is found. We used a database covering a period of 33 years (1987-2020). To estimate the probability of survival, we used Cormack-Jolly-Seber models with a Bayesian approach. Our models estimated a survival rate of 0.90 ± 0.08 in juveniles, 0.95 ± 0.04 in subadults and 0.92 ± 0.05 in adults. The survival probability increased over the study period in adults and subadults but not in juveniles. By contrast, productivity decreased over the same period. Our study provides updated information on the status of two demographic parameters of great importance to the species and allows us to identify the most vulnerable age classes and to plan conservation actions to improve the situation of the species in a territory that is a donor of specimens for reintroduction projects. The estimated survival values suggest that more caution should be exercised when planning these feeding points according to the use the species makes of them.
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  • 文章类型: Journal Article
    “癫痫是一种慢性脑部疾病,影响所有年龄段的人。癫痫的原因通常是未知的,其在不同年龄段的影响尚未研究。这项研究的主要目的是介绍一种新颖的方法,即使从嘈杂的EEG信号中也能成功检测癫痫。此外,这项研究还调查了人群特异性癫痫检测,以提供新的见解。相应地,我们利用了TUH脑电图语料库,公开可用的具有挑战性的多通道EEG数据库,其中包含详细的患者信息。我们应用了带通滤波器和手动噪声抑制来从EEG信号中去除噪声和伪影。然后,我们利用统计特征和相关性来选择频道,并应用了连续小波变换等不同的变换分析方法,频谱图,和维格纳-维尔分布,有和没有集合平均,构建图像数据集。之后,我们使用各种深度学习模型进行一般分析。我们的研究结果表明,不同的模型,如DenseNet201,DenseNet169,DenseNet121,VGG16,VGG19,Xception,InceptionV3和MobileNetV2在一般分析中使用从不同方法生成的图像时表现更好。此外,我们根据年龄将数据集分为两部分进行人口分析。所有在一般分析中表现良好的模型都用于人口分析,这为从脑电图中检测癫痫提供了新的见解。我们提出的癫痫检测框架达到了100%的准确率,它的性能优于其他并发方法。\"
    \"Epilepsy is a chronic brain disorder that affects people of all ages. The cause of epilepsy is often unknown and its effect in different age groups is not yet investigated. The main objective of this study is to introduce a novel approach that successfully detects epilepsy even from noisy EEG signals. In addition, this study also investigates population specific epilepsy detection for providing novel insights. Correspondingly, we utilized the TUH EEG corpus database, publicly available challenging multi-channel EEG database containing detailed patient information. We applied a band-pass filter and manual noise rejection to remove noise and artifacts from EEG signals. We then utilized statistical features and correlation to select channels, and applied different transform analysis methods such as continuous wavelet transform, spectrogram, and Wigner-Ville distribution, with and without ensemble averaging, to construct an image dataset. Afterwards, we used various deep-learning models for general analysis. Our findings suggest that different models such as DenseNet201, DenseNet169, DenseNet121, VGG16, VGG19, Xception, InceptionV3, and MobileNetV2 performed better while using images generated from different approaches in general analysis. Furthermore, we split the dataset into two sections according to age for population analysis. All the models that performed well in the general analysis were used for population analysis, which provided novel insights in epilepsy detection from EEG. Our proposed framework for epilepsy detection achieved 100% accuracy, which outperforms other concurrent methods.\"
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  • 文章类型: Systematic Review
    喹硫平表现出显着的药代动力学和药效学(PK/PD)变异性,其起源知之甚少。本系统综述总结了已发表的人群PK/PD研究,并确定了导致这种变异性的重要协变量,以告知精确给药。
    我们系统地搜索了PubMed,WebofScience,和Embase数据库,并比较研究特征,模型参数,和协变量效应。视觉预测分布用于比较不同的模型。森林地块和蒙特卡洛模拟用于评估协变量的影响。
    纳入了6项人群PK和3项人群PK/PD研究。成人表观清除率中位数为87.7L/h。强和中度CYP3A4诱导物增加了表观清除率约四倍,而强效CYP3A4抑制剂将其降低了93%。简短精神病学评定量表的半最大效应浓度为82.8ng/mL,多巴胺D2受体占有率为583ng/mL。治疗时间和喹硫平暴露均与体重增加相关。
    对于接受喹硫平治疗的患者,应避免同时施用强效或中度CYP3A4诱导剂和抑制剂。当需要联合用药时,建议根据治疗药物监测调整剂量。有必要进行更多的研究来描述喹硫平和去甲喹硫平在儿科中的剂量-暴露-反应关系。老年病学,肝功能受损的患者,和妇女使用避孕药或怀孕或更年期。
    CRD42023446654。
    UNASSIGNED: Quetiapine exhibits notable pharmacokinetic and pharmacodynamic (PK/PD) variability, the origins of which are poorly understood. This systematic review summarizes published population PK/PD studies and identifies significant covariates accounting for this variability to inform precision dosing.
    UNASSIGNED: We systematically searched the PubMed, Web of Science, and Embase databases and compared study characteristics, model parameters, and covariate effects. Visual predictive distributions were used to compare different models. Forest plots and Monte Carlo simulations were used to assess the influence of covariates.
    UNASSIGNED: Six population PK and three population PK/PD studies were included. The median apparent clearance in adults was 87.7 L/h. Strong and moderate cytochrome P450 3A4 inducers increased the apparent clearance approximately fourfold, while strong cytochrome P450 3A4 inhibitors reduced it by 93%. The half-maximum effect concentrations were 82.8 ng/mL for the Brief Psychiatric Rating Scale and 583 ng/mL for dopamine D2 receptor occupancy. Both treatment duration and quetiapine exposure were associated with weight gain.
    UNASSIGNED: Concurrent administration of potent or moderate CYP3A4 inducers and inhibitors need to be avoided in quetiapine-treated patients. When co-medication is required, it is recommended to adjust the dosage based on therapeutic drug monitoring. Additional research is warranted to delineate the dose-exposure-response relationships of quetiapine and active metabolite norquetiapine in pediatrics, geriatrics, hepatically-impaired patients, and women using contraceptives or are pregnant or menopausal.
    UNASSIGNED: CRD42023446654.
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