Growth patterns

生长模式
  • 文章类型: Journal Article
    随着野生黄芪(WA)资源的枯竭,仿野生黄芪(IWA)和栽培黄芪(CA)已成为黄芪的主要产品。然而,三种生长方式的质量差异(WA,IWA,CA)和不同生长年限的黄芪尚未得到充分表征,导致缺乏必要的科学证据来代替WA。
    我们创新性地提出了一种包含性状的多维评价方法,微观结构,细胞壁成分,糖类,和药效学化合物,全面解释黄芪不同生长方式和不同年份的品质差异。
    我们的研究表明,IWA和WA的质量相对相似,包括表观颜色等评价指标,截面结构和气味,Phellem的厚度,血管的直径和数量,韧皮部和木质部的形态,以及纤维素的含量和比例,半纤维素,木质素,蔗糖,淀粉,水溶性多糖,总皂苷。然而,蔗糖的含量,淀粉和山梨糖在CA中显著高于WA,血管的直径和数量,总黄酮含量低于WA,表明CA和WA之间存在显著的质量差异。因此,我们建议使用IWA代替CA代替WA。至于IWA的种植年份,我们的结果表明,1-32岁的IWA可以根据其质量变化分为三个阶段:快速生长期(1-5年),稳定生长期(6-20年),和老年生长期(25-32岁)。其中,6-20岁的IWA表现出一致的多维比较结果,展示了水溶性多糖等关键活性成分的高水平,黄酮类化合物,和皂苷。考虑到IWA的质量和种植费用,我们建议种植者的种植期限为6-8年。总之,我们建立了一种新的多维评价方法来系统地表征黄芪的质量,为黄芪的人工栽培和质量保证提供了新的科学视角。
    UNASSIGNED: With the depletion of wild Astragali Radix (WA) resources, imitated-wild Astragali Radix (IWA) and cultivated Astragali Radix (CA) have become the main products of Astragali Radix. However, the quality differences of three growth patterns (WA, IWA, CA) and different growth years of Astragali Radix have not been fully characterized, leading to a lack of necessary scientific evidence for their use as substitutes for WA.
    UNASSIGNED: We innovatively proposed a multidimensional evaluation method that encompassed traits, microstructure, cell wall components, saccharides, and pharmacodynamic compounds, to comprehensively explain the quality variances among different growth patterns and years of Astragali Radix.
    UNASSIGNED: Our study showed that the quality of IWA and WA was comparatively similar, including evaluation indicators such as apparent color, sectional structure and odor, thickness of phellem, diameter and number of vessels, morphology of phloem and xylem, and the levels and ratios of cellulose, hemicellulose, lignin, sucrose, starch, water-soluble polysaccharides, total-saponins. However, the content of sucrose, starch and sorbose in CA was significantly higher than WA, and the diameter and number of vessels, total-flavonoids content were lower than WA, indicating significant quality differences between CA and WA. Hence, we suggest that IWA should be used as a substitute for WA instead of CA. As for the planting years of IWA, our results indicated that IWA aged 1-32 years could be divided into three stages according to their quality change: rapid growth period (1-5 years), stable growth period (6-20 years), and elderly growth period (25-32 years). Among these, 6-20 years old IWA exhibited consistent multidimensional comparative results, showcasing elevated levels of key active components such as water-soluble polysaccharides, flavonoids, and saponins. Considering both the quality and cultivation expenses of IWA, we recommend a cultivation duration of 6-8 years for growers. In conclusion, we established a novel multidimensional evaluation method to systematically characterize the quality of Astragali Radix, and provided a new scientific perspective for the artificial cultivation and quality assurance of Astragali Radix.
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  • 文章类型: Journal Article
    背景:尽管I期肺腺癌(LUAD)患者的总生存期有希望,其中10-25%的患者在手术后仍然复发。[1]虽然对于I期患者是否需要辅助化疗仍有争议。[2]非黏液性LUAD的IASLC分级系统显示,轻度高级别模式是预后不良的重要指标。[3]其他风险因素,例如,胸膜侵犯,淋巴管浸润,STAS,等。也与预后不良有关。[4-6]仍然缺乏IASLC分级本身或与其他危险因素一起是否可以指导I期患者辅助治疗的使用的证据。在这篇文章中,我们尝试为I期LUAD患者建立多变量复发预测模型,该模型能够确定辅助化疗的候选药物.
    方法:我们回顾性收集了2018.8.1至2018.12.31在我们机构接受肺手术并诊断为肺腺癌pT1-2aN0M0(I期)的患者。临床数据,CT扫描的表现,病理特征,收集驱动基因突变和随访信息.使用非辅助队列进行Cox比例风险回归分析以预测无病生存(DFS),并构建列线图并应用于总队列。采用Kaplan-Meier法比较各组间DFS。通过R版本3.6.3进行统计学分析。
    结果:本研究共纳入913例I期LUAD患者。中位随访时间为48.1个月,4年和5年DFS分别为92.9%和89.6%。65例患者出现复发或死亡。4年DFS为97.0%,94.6%和76.2%,5年期DFS为95.5%,在IASLC等级1、2和3中分别为90.0%和74.1%(p<0.0001)。由单一危险因素定义的高危患者,例如,IASLC3级胸膜侵犯,STAS,切除较少的LN不能从辅助治疗中获益。建立LASSO-COX回归模型,将患者分为高危和低危组。在高危人群中,接受辅助化疗的患者比没有接受辅助化疗的患者有更长的DFS(p=0.024),而在低风险组中,接受辅助化疗的患者的DFS低于未接受辅助化疗的患者(p<0.001).
    结论:IASLC分级是DFS的重要指标,然而,在我们的I期LUAD队列中,它不能指导辅助治疗.生长模式和T指标以及其他危险因素可以确定高危患者是辅助治疗的潜在候选者。包括一些IALUAD期患者。
    Despite promising overall survival of stage I lung adenocarcinoma (LUAD) patients, 10-25 % of them still went through recurrence after surgery. [1] While it is still disputable whether adjuvant chemotherapy is necessary for stage I patients. [2] IASLC grading system for non-mucinous LUAD shows that minor high-grade patterns are significant indicator of poor prognosis. [3] Other risk factors, such as, pleura invasion, lympho-vascular invasion, STAS, etc. are also related to poor prognosis. [4-6] There still lack evidence whether IASLC grade itself or together with other risk factors can guide the use of adjuvant therapy in stage I patients. In this article, we tried to establish a multi-variable recurrence prediction model for stage I LUAD patients that is able to identify candidates of adjuvant chemotherapy.
    We retrospectively collected patients who underwent lung surgery from 2018.8.1 to 2018.12.31 at our institution and diagnosed with lung adenocarcinoma pT1-2aN0M0 (stage I). Clinical data, manifestation on CT scan, pathologic features, driver gene mutations and follow-up information were collected. Cox proportional hazards regression analyses were performed utilizing the non-adjuvant cohort to predict disease free survival (DFS) and a nomogram was constructed and applied to the total cohort. Kaplan-Meier method was used to compare DFS between groups. Statistical analysis was conducted by R version 3.6.3.
    A total of 913 stage I LUAD patients were included in this study. Median follow-up time is 48.1 months.4-year and 5-year DFS are 92.9 % and 89.6 % for the total cohort. 65 patient experienced recurrence or death. 4-year DFS are 97.0 %,94.6 % and 76.2 %, and 5-year DFS are 95.5 %, 90.0 % and 74.1 % in IASLC Grade1, 2 and 3, respectively(p < 0.0001). High-risk patients defined by single risk factors, such as, IASLC grade 3, pleura invasion, STAS, less LN resected could not benefit from adjuvant therapy. A LASSO-COX regression model was built and patients are divided into high-risk and low-risk groups. In the high-risk group, patients underwent adjuvant chemotherapy have longer DFS than those who did not (p = 0.024), while in the low-risk group, patients underwent adjuvant chemotherapy have inferior DFS than those who did not (p < 0.001).
    IASLC grading is a significant indicator of DFS, however it could not guide adjuvant therapy in our stage I LUAD cohort. Growth patterns and T indicators together with other risk factors could identify high-risk patients that are potential candidate of adjuvant therapy, including some stage IA LUAD patients.
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  • 文章类型: English Abstract
    本研究旨在揭示不同生长方式和年限对防风药材质量的影响。通过比色计对粉末样品的表观颜色进行定量,并计算总颜色值(E~*ab)。prim-O-葡萄糖基西米富净的含量,Cimifugin,4'-O-β-D-葡萄糖基-5-O-甲基维胺醇,sec-O-葡萄糖基乳腺癌,高效液相色谱法(HPLC)同时测定样品中的3'-O-当归酰基乳腺癌。聚类分析,主成分分析,偏最小二乘判别分析,采用Pearson相关分析对粉末色度值和5种成分的含量进行分析。结果表明,样品的E~*ab值依次为野生组<多岁组<一岁组。Cimifugin的内容,sec-O-葡萄糖基乳腺癌,野生组的3\'-O-angeloylhamaudol明显高于多岁和一岁组。多变量统计分析结果显示,多龄组质量差异较大。多年生样品的质量接近野生组,优于一岁组。b~*的投影(VIP)值中的变量重要性,3\'-O-angeloylhamodol含量,E~*ab,L~*均大于1,西米富金含量接近1。E~*ab值与prim-O-葡萄糖基西米富净含量呈负相关,Cimifugin,sec-O-葡萄糖基乳腺癌,和3'-O-angeloylhamaudol,而与4'-O-β-D-葡萄糖基-5-O-甲基维氨醇含量无线性关系。生长方式和年份对防风样品的质量有不同的影响。防风的色度值和5种成分的含量可用于评价防风的质量,3'-O-angeloylhamaudol和cinmifugin可以被认为是防风在生长过程中质量控制的标志。
    This study aims to reveal the effects of different growth patterns and years on the quality of Saposhnikoviae Radix samples. The apparent colors of the powder samples were quantified by a colorimeter, and the total color values(E~*ab) were calculated. The content of prim-O-glucosylcimifugin, cimifugin, 4\'-O-β-D-glucosyl-5-O-methylvisamminol, sec-O-glucosylhamaudol, and 3\'-O-angeloylhamaudol in the samples was simultaneously determined by high performance liquid chromatography(HPLC). Cluster analysis, principal component analysis, partial least squares discriminant analysis, and Pearson correlation analysis were performed to analyze the powder chromatic values and the content of 5 components. The results showed that the E~*ab values of the samples were in the order of wild group<multiple-year-old group<one-year-old group. The content of cimifugin, sec-O-glucosylhamaudol, and 3\'-O-angeloylhamaudol in the wild group was significantly higher than that in the multiple-year-old and one-year-old groups. The results of multivariate statistical analysis showed that the quality of multiple-year-old group varied greatly. The quality of the multiple-year-old samples was close to that of the wild group and better than that of the one-year-old group. The variable importance in the projection(VIP) values of b~*, 3\'-O-angeloylhamaudol content, E~*ab, and L~* were all larger than 1, and that of cimifugin content was close to 1. The E~*ab value was negatively correlated with the content of prim-O-glucosylcimifugin, cimifugin, sec-O-glucosylhamaudol, and 3\'-O-angeloylhamaudol, while it had no linear correlation with the 4\'-O-β-D-glucosyl-5-O-methylvisamminol content. The growth patterns and years had different effects on the quality of Saposhnikoviae Radix samples. The chromatic values of Saposhnikoviae Radix and the content of 5 components can be used to evaluate the quality of Saposhnikoviae Radix, and 3\'-O-angeloylhamaudol and cinmifugin can be considered as markers for the quality control of Saposhnikovia divaricata during the growing process.
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  • 文章类型: Journal Article
    根据新古典增长理论,有两种主要的经济增长模式,即,集约化增长,这取决于全要素生产率(TFP),和广泛的增长,这依赖于要素投入。本研究通过将上海和重庆的财产税试点视为准自然实验,探讨了财产税对增长方式的影响。为了评估,我们应用了多种因果推断方法,包括DID,PSM-DID,以及用于程序评估的面板数据方法。我们发现,上海的试点促进了集约化增长,而重庆的试点加强了普遍的粗放型增长。具体来说,上海的房产税限制了多套住房和超大住宅的购买,从而降低房价,提高全要素生产率。重庆的房产税主要针对高档住宅,导致高端住宅和普通住宅之间的替代效应;因此,试点提高了普通住宅价格和平均房价,刺激了要素投入和经济增长,但降低了全要素生产率。这项研究提供了财产税和增长模式之间因果关系的经验证据,这表明,转型经济体应在财产税改革期间避免狭窄的税基,以实现集约化增长。
    According to neoclassical growth theory, there are two main patterns of economic growth, namely, intensive growth, which depends on total factor productivity (TFP), and extensive growth, which relies on factor input. This study explores the impacts of property taxes on growth patterns by considering the property tax pilots in Shanghai and Chongqing as a quasi-natural experiment. For evaluation, we applied multiple causal inference methods, including DID, PSM-DID, and a panel data approach for program evaluation. We found that the pilot of Shanghai contributed to intensive growth, while the pilot of Chongqing reinforced the prevailing extensive growth. Specifically, Shanghai\'s property taxes restricted the buying of multiple homes and oversized homes, thereby reducing house prices and increasing TFP. Chongqing\'s property taxes are mainly for high-end houses, causing the substitution effect between high-end homes and ordinary houses; thus, the pilot increased the prices of ordinary houses and the average house price, which stimulated factor input and economic growth but decreased TFP. This study provides empirical evidence of the causal relationships between property taxes and growth patterns, indicating that transitional economies should avoid narrow tax bases during property tax reform for intensive growth.
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  • 文章类型: Journal Article
    蒙哥马利方程将叶面积预测为叶片长度和宽度乘以校正因子的乘积。它已被证明适用于各种叶子形状。然而,尚不清楚树的大小(以胸高的直径衡量)是否会影响叶片的形状和大小,或者叶形的这种变化是否会使计算叶面积的蒙哥马利方程无效。这里,我们检查了60棵高山橡树(Quercuspannosa)的两种生长模式(从种子生长的树木与从根部生长),每个站点有30个人。每棵树的100到110片叶子被用来测量叶片干重,叶面积,长度,和宽度,并计算椭圆度指数,叶片两侧的面积比,和椎板质心比。我们测试了树的大小是否会影响叶子的形状,尺寸,和单位面积的叶片干质量,并测试了蒙哥马利方程是否适用于计算不同树木大小的叶子的叶面积。树木的胸高直径范围为8.6至96.4cm(树高范围为3至32m)。胸高直径显著影响叶片形状,尺寸,和单位面积的叶片干质量。较大的树木具有较大和较宽的叶子,单位面积的叶片干质量较低,叶片质心比叶根更靠近叶尖。然而,叶片大小和形状的变化并没有否定蒙哥马利方程的有效性。因此,不管树的大小,叶面积与叶长宽乘积的比例关系可用于计算叶片面积。
    The Montgomery equation predicts leaf area as the product of leaf length and width multiplied by a correction factor. It has been demonstrated to apply to a variety of leaf shapes. However, it is unknown whether tree size (measured as the diameter at breast height) affects leaf shape and size, or whether such variations in leaf shape can invalidate the Montgomery equation in calculating leaf area. Here, we examined 60 individual trees of the alpine oak (Quercus pannosa) in two growth patterns (trees growing from seeds vs. growing from roots), with 30 individuals for each site. Between 100 and 110 leaves from each tree were used to measure leaf dry mass, leaf area, length, and width, and to calculate the ellipticalness index, ratio of area between the two sides of the lamina, and the lamina centroid ratio. We tested whether tree size affects leaf shape, size, and leaf dry mass per unit area, and tested whether the Montgomery equation is valid for calculating leaf area of the leaves from different tree sizes. The diameters at breast height of the trees ranged from 8.6 to 96.4 cm (tree height ranged from 3 to 32 m). The diameter at breast height significantly affected leaf shape, size, and leaf dry mass per unit area. Larger trees had larger and broader leaves with lower leaf dry mass per unit area, and the lamina centroid was closer to the leaf apex than the leaf base. However, the variation in leaf size and shape did not negate the validity of the Montgomery equation. Thus, regardless of tree size, the proportional relationship between leaf area and the product of leaf length and width can be used to calculate the area of the leaves.
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  • 文章类型: Journal Article
    旨在研究不同生长模式与高血压之间的关系,并进一步研究BMI在儿童和青少年生长模式与高血压之间的中介作用。采用分层整群抽样方法,选取7~18岁儿童青少年31581人。使用物流回归模型来计算不同生长方式与高血压之间关联的几率比(OR)和95%置信区间(95CI)。中介效应分析用于评估BMI对不同生长模式下血压水平升高的影响。在不同的性别和年龄,与正常生长的参照组相比,血压水平和高血压患病率的追赶性增长较高,但是下降的增长率较低。高血压患病率为11.69%,16.06%,正常增长9.68%,追赶型增长,和追赶下降的增长,分别。总的来说,与正常的生长模式相比,高血压的ORs(95CI),高收缩压和高舒张压在追赶增长中分别为1.171(1.073,1.280),1.110(1.001,1.230)和1.141(1.025,1.270)(p<0.05),分别。此外,当前BMI的中介作用存在于血压水平与不同生长方式之间的关联,尤其是男孩。我们的研究结果表明,出生后不同的生长模式可以改变血压,高血压的潜在风险可能因儿童和青少年时期的追赶增长而增加。
    Aimed to investigate the associations between different growth patterns with high blood pressure, and further examine the mediation effect of BMI between growth patterns and high blood pressure among children and adolescents. A total of 31581 children and adolescents aged 7-18 years were selected based on the stratified cluster sampling method. Logistics regression models were used to calculate the odds rations (ORs) and 95% confidence interval (95%CI) of the association between different growth patterns and high blood pressure. Mediation effect analyses were applied to estimate the effect of BMI on the increase of blood pressure levels in different growth patterns. In different sex and ages, compared to reference group of normal growth, blood pressure levels and prevalence of high blood pressure of the catch-up growth were higher, but that of the catch-down growth were lower. The prevalence of high blood pressure was 11.69%, 16.06%, and 9.68% in normal growth, catch-up growth, and catch-down growth, respectively. In total, compared with the normal growth pattern, the ORs (95%CI) of high blood pressure, high systolic blood pressure and high diastolic blood pressure in the catch-up growth were 1.171(1.073,1.280), 1.110(1.001,1.230) and 1.141(1.025,1.270) (p < .05), respectively. Additionally, the mediation effect of current BMI existed in the association between blood pressure levels and different growth patterns, particularly in boys. Our findings suggested that different growth patterns after birth could modify blood pressure, and the potential risks of high blood pressure could be increased by catch-up growth at childhood and adolescence.
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  • 文章类型: Journal Article
    Dividing the human cerebral cortex into structurally and functionally distinct regions is important in many neuroimaging studies. Although many parcellations have been created for adults, they are not applicable for fetal studies, due to dramatic differences in brain size, shape and folding between adults and fetuses, as well as dynamic growth of fetal brains. To address this issue, we propose a novel method to divide a population of fetal cortical surfaces into distinct regions based on the dynamic growth patterns of cortical properties, which indicate the underlying changes of microstructures. As microstructures determine the molecular organization and functional principles of the cortex, growth patterns enable an accurate definition of distinct regions in development, microstructure, and function. To comprehensively capture the similarities of cortical growth patterns among vertices, we construct two complementary similarity matrices. One is directly based on the growth trajectories of vertices and the other is based on the correlation profiles of vertices\' growth trajectories in relation to those of reference points. Then, we nonlinearly fuse these two similarity matrices into a single one, which can better captures both their common and complementary information than by simply averaging them. Finally, based on this fused matrix, we perform spectral clustering to divide fetal cortical surfaces into distinct regions. We have applied our method on 25 normal fetuses from 26 to 29 gestational weeks and generated biologically meaningful parcellations.
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  • 文章类型: Journal Article
    The fine periodic growth patterns on shell surfaces have been widely used for studies in the ecology and evolution of scallops. Modern X-ray CT scanners and digital cameras can provide high-resolution image data that contain abundant information such as the shell formation rate, ontogenetic age, and life span of shellfish organisms. We introduced a novel multiscale image processing method based on matched filters with Gaussian kernels and partial differential equation (PDE) multiscale hierarchical decomposition to segment the small tubular and periodic structures in scallop shell images. The periodic patterns of structures (consisting of bifurcation points, crossover points of the rings and ribs, and the connected lines) could be found by our Space-based Depth-First Search (SDFS) algorithm. We created a MATLAB package to implement our method of periodic pattern extraction and pattern matching on the CT and digital scallop images available in this study. The results confirmed the hypothesis that the shell cyclic structure patterns encompass genetically specific information that can be used as an effective invariable biomarker for biological individual recognition. The package is available with a quick-start guide and includes three examples: http://mgb.ouc.edu.cn/novegene/html/code.php.
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