univariate analysis

单变量分析
  • 文章类型: Journal Article
    简介:慢性胰腺炎(CP)以及胰头癌(CA)的患者接受了名为“根据Traverso-Longmire(PPPD)保留幽门的胰十二指肠切除术”的手术干预,这允许对术后疗程进行比较分析。假设是,由于肿瘤疾病的严重程度,CA患者的一般状况和免疫状况将比CP患者更差,这将反映在PPPD后更不利的早期术后结果中。方法:为了引起不同诊断的影响,在部门接受手术的所有连续患者的手术结果。将军,腹部,记录2002年至2015年在马格德堡大学医院进行的血管和移植手术(纳入标准)并进行比较评估。术后早期结局以一般和特定并发症发生率为特征,表明发病率。死亡率,和微生物定植率,特别是手术部位感染(SSI,根据CDC标准)。此外,回顾性记录了来自所有隔室的拭子和培养物的微生物学发现以及来自患者记录的术前和围手术期参数,并用于本系统回顾性单中心观察性研究(设计)的统计学比较.结果:总的来说,192例CA(68.1%)和90例CP(31.9%)符合本研究的纳入标准。令人惊讶的是,有相似的具体并发症发生率45.3%(CA)与45.6%(CP;p=0.97)和住院死亡率,只有3.65%(CA)与3.3%(CP;p=0.591);CA的总并发症发生率往往较高,为23.4%。14.4%(CP;p=0.082)。总的来说,在所有患者中,在CP中检测到28.9%的潜在致病细菌,而在CA中检测到32.8%(p=0.509),SSI发生率分别为29.7%(CA)和24.4%(CP;p=0.361)。在多变量分析中,发现CA是发生SSI的重要危险因素(OR:2.025;p=0.048);否则,潜在疾病对术后早期结果没有显着影响。多变量分析中的重要危险因素也是男性SSI和微生物定植,术中输注红细胞包死亡,一般和特定的并发症,和手术修正。结论:基于这些结果,部分意义重大,潜在疾病CA的部分趋势负面影响,相比CP,对术后早期结果的发现,尤其是PPPD后的SSI。国际文献证实了这种影响。
    Introduction: Patients with chronic pancreatitis (CP) as well as with pancreatic head carcinoma (CA) undergo the surgical intervention named \"pylorus-preserving pancreatoduodenectomy according to Traverso-Longmire (PPPD)\", which allowed a comparative analysis of the postoperative courses. The hypothesis was that patients with CA would have worse general as well as immune status than patients with CP due to the severity of the tumor disease and that this would be reflected in the more disadvantageous early postoperative outcome after PPPD. Methods: With the aim of eliciting the influence of the different diagnoses, the surgical outcome of all consecutive patients who underwent surgery at the Dept. of General, Abdominal, Vascular and Transplant Surgery at the University Hospital at Magdeburg between 2002 and 2015 (inclusion criterion) was recorded and comparatively evaluated. Early postoperative outcome was characterized by general and specific complication rate indicating morbidity, mortality, and microbial colonization rate, in particular surgical site infection (SSI, according to CDC criteria). In addition, microbiological findings of swabs and cultures from all compartments as well as preoperative and perioperative parameters from patient records were retrospectively documented and used for statistical comparison in this systematic retrospective unicenter observational study (design). Results: In total, 192 cases with CA (68.1%) and 90 cases with CP (31.9%) met the inclusion criteria of this study. Surprisingly, there were similar specific complication rates of 45.3% (CA) vs. 45.6% (CP; p = 0.97) and in-hospital mortality, which differed only slightly at 3.65% (CA) vs. 3.3% (CP; p = 0.591); the overall complication rate tended to be higher for CA at 23.4% vs. 14.4% (CP; p = 0.082). Overall, potentially pathogenic germs were detected in 28.9% of all patients in CP compared to 32.8% in CA (p = 0.509), and the rate of SSI was 29.7% (CA) and 24.4% (CP; p = 0.361). In multivariate analysis, CA was found to be a significant risk factor for the development of SSI (OR: 2.025; p = 0.048); the underlying disease had otherwise no significant effect on early postoperative outcome. Significant risk factors in the multivariate analysis were also male sex for SSI and microbial colonization, and intraoperatively transfused red cell packs for mortality, general and specific complications, and surgical revisions. Conclusions: Based on these results, a partly significant, partly trending negative influence of the underlying disease CA, compared to CP, on the early postoperative outcome was found, especially with regard to SSI after PPPD. This influence is corroborated by the international literature.
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  • 文章类型: Journal Article
    目的:本文通过开发预测模型来评估围手术期患者病情恶化的综合分析,该模型将未预期的ICU入院率和住院死亡率作为不同的和综合的结果。
    方法:只有不到1%的病例导致这些结果中的至少一种,我们调查了98个特征,以确定它们在预测患者恶化中的作用,使用单变量分析。此外,采用LASSO正则化逻辑回归(LR)进行多变量分析。我们还评估了分类模型,包括支持向量机等非线性分类器,随机森林,XGBoost
    结果:在评估期间,仔细注意数据不平衡,因此使用了多个评估指标,对不平衡不太敏感。这些度量包括接收器操作特性下的区域,精确召回率和卡帕曲线,和精度,灵敏度,kappa,和F1得分。将未预期的ICU入院率和死亡率结合到单一结果中,总体上改善了预测性能。然而,这导致预测个体恶化形式的准确性降低,LR显示了组合预测的最佳性能。
    结论:该研究强调了特定的围手术期特征在预测患者恶化方面的重要性,特别是通过单变量分析揭示。重要的是,逻辑回归等可解释模型优于复杂分类器,表明他们的实用性。尤其是,当组合在集成模型中以预测多种形式的恶化时。这些发现主要受到数据失衡的限制,因为术后恶化很少发生。因此,未来的研究应该集中在捕获更多的恶化事件,并可能将验证扩展到多中心研究。
    结论:这项工作证明了准确预测围手术期患者恶化的潜力,强调几个围手术期特征的重要性和逻辑回归等可解释模型的实用性,以及用于预测几种结果类型的集成模型。在未来的临床实践中,这些数据驱动的预测模型可能会通过提供基于证据的风险评估来形成术后风险分层的基础。
    OBJECTIVE: This paper presents a comprehensive analysis of perioperative patient deterioration by developing predictive models that evaluate unanticipated ICU admissions and in-hospital mortality both as distinct and combined outcomes.
    METHODS: With less than 1% of cases resulting in at least one of these outcomes, we investigated 98 features to identify their role in predicting patient deterioration, using univariate analyses. Additionally, multivariate analyses were performed by employing logistic regression (LR) with LASSO regularization. We also assessed classification models, including non-linear classifiers like Support Vector Machines, Random Forest, and XGBoost.
    RESULTS: During evaluation, careful attention was paid to the data imbalance therefore multiple evaluation metrics were used, which are less sensitive to imbalance. These metrics included the area under the receiver operating characteristics, precision-recall and kappa curves, and the precision, sensitivity, kappa, and F1-score. Combining unanticipated ICU admissions and mortality into a single outcome improved predictive performance overall. However, this led to reduced accuracy in predicting individual forms of deterioration, with LR showing the best performance for the combined prediction.
    CONCLUSIONS: The study underscores the significance of specific perioperative features in predicting patient deterioration, especially revealed by univariate analysis. Importantly, interpretable models like logistic regression outperformed complex classifiers, suggesting their practicality. Especially, when combined in an ensemble model for predicting multiple forms of deterioration. These findings were mostly limited by the large imbalance in data as post-operative deterioration is a rare occurrence. Future research should therefore focus on capturing more deterioration events and possibly extending validation to multi-center studies.
    CONCLUSIONS: This work demonstrates the potential for accurate prediction of perioperative patient deterioration, highlighting the importance of several perioperative features and the practicality of interpretable models like logistic regression, and ensemble models for the prediction of several outcome types. In future clinical practice these data-driven prediction models might form the basis for post-operative risk stratification by providing an evidence-based assessment of risk.
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  • 文章类型: Journal Article
    多发性骨髓瘤(MM)是一种无法治愈的血液肿瘤。在此之前是意义不确定的单克隆丙种球蛋白病(MGUS)-无症状期。已证明早期检测可提高5年生存率。然而,缺乏能够早期检测疾病的血液生物标志物.代谢组学和脂蛋白亚组分变量分析正在获得牵引力,以扩大我们对疾病状态的理解,更具体地说,用于鉴定血液肿瘤患者的诊断标志物。本研究旨在增强我们对多发性骨髓瘤(MM)的理解,并确定候选代谢物,允许更有效的预防性治疗。从25名健康对照中收集血清,20名MGUS患者,和30名MM患者。利用1H-NMR(核磁共振)波谱来评估血清样品。使用多变量检查代谢物浓度,单变量,和路径分析。MGUS患者的代谢谱显示丙氨酸水平较低,赖氨酸,与对照组相比,亮氨酸但甲酸含量较高。然而,MM患者的代谢谱,与对照组相比,表现出降低的总载脂蛋白A1,HDL-4载脂蛋白A1,HDL-4载脂蛋白A2,HDL游离胆固醇,HDL-3胆固醇和HDL-4胆固醇。最后,MGUS与MM患者之间的代谢比较主要表明脂蛋白水平的改变:总胆固醇,HDL胆固醇,HDL游离胆固醇,总载脂蛋白-A1、HDL载脂蛋白-A1、HDL-4载脂蛋白-A1和HDL-4磷脂。这项研究为患者从健康状态到MGUS再到MM的血清代谢和脂蛋白亚组分变化提供了新的见解。这可能允许早期临床检测和治疗。
    Multiple myeloma (MM) is an incurable hematological cancer. It is preceded by monoclonal gammopathy of uncertain significance (MGUS)-an asymptomatic phase. It has been demonstrated that early detection increases the 5-year survival rate. However, blood-based biomarkers that enable early disease detection are lacking. Metabolomic and lipoprotein subfraction variable profiling is gaining traction to expand our understanding of disease states and, more specifically, for identifying diagnostic markers in patients with hematological cancers. This study aims to enhance our understanding of multiple myeloma (MM) and identify candidate metabolites, allowing for a more effective preventative treatment. Serum was collected from 25 healthy controls, 20 patients with MGUS, and 30 patients with MM. 1H-NMR (Nuclear Magnetic Resonance) spectroscopy was utilized to evaluate serum samples. The metabolite concentrations were examined using multivariate, univariate, and pathway analysis. Metabolic profiles of the MGUS patients revealed lower levels of alanine, lysine, leucine but higher levels of formic acid when compared to controls. However, metabolic profiling of MM patients, compared to controls, exhibited decreased levels of total Apolipoprotein-A1, HDL-4 Apolipoprotein-A1, HDL-4 Apolipoprotein-A2, HDL Free Cholesterol, HDL-3 Cholesterol and HDL-4 Cholesterol. Lastly, metabolic comparison between MGUS to MM patients primarily indicated alterations in lipoproteins levels: Total Cholesterol, HDL Cholesterol, HDL Free Cholesterol, Total Apolipoprotein-A1, HDL Apolipoprotein-A1, HDL-4 Apolipoprotein-A1 and HDL-4 Phospholipids. This study provides novel insights into the serum metabolic and lipoprotein subfraction changes in patients as they progress from a healthy state to MGUS to MM, which may allow for earlier clinical detection and treatment.
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  • 文章类型: Journal Article
    目标:目前,我们缺乏有关儿科人群中新型抗癫痫药物(AEDs)的全面信息.这可能解释了儿科医生在这方面的偏好之间的差异。因此,研究这些药物对儿童的多方面影响至关重要。我们研究的终点是癫痫发作管理需要联合治疗的非AED预测因子,无癫痫发作期>6个月和>12个月,儿童癫痫问卷中的生活质量变化-55(QOLCE-55),和不良事件的发生率。
    方法:这种前瞻性,观察性研究在KIMS中进行,布巴内斯瓦尔,印度,从2021年1月到2022年11月。2-12岁的儿童接受了两种新型抗癫痫药的单药治疗,例如,左乙拉西坦,托吡酯,和奥卡西平或更老的抗癫痫药,例如,丙戊酸,苯妥英,苯巴比妥,和卡马西平.进行单变量和多变量分析以评估预测因子。我们使用R软件(4.1.1版)进行数据分析。
    结果:216名参与者中有一百九十八名(91.7%)完成了这项研究。研究人群的平均年龄为5.2岁,其中117人(59%)为男性。单因素分析显示,男性性别,低出生体重,早产,辅助阴道分娩和特定部位癫痫,和母亲的癫痫病史是联合治疗和减少无癫痫发作期的重要预测因素。关于QOLCE-55评分的改善没有显著差异。无严重不良事件。
    结论:围产期并发症和母亲癫痫史对抗癫痫药的疗效有显著影响。然而,多变量分析没有产生统计学上显著的结果。
    OBJECTIVE: Currently, we have a shortage of comprehensive information about newer antiepileptic drugs (AEDs) in the pediatric population. This might explain the discrepancies among pediatricians\' preferences in this regard. Therefore, it is crucial to study the multifaceted impacts of these drugs on children. The endpoints of our study were non-AED predictors of the requirement of combination therapy for seizure management, seizure-free period >6 months and >12 months, change in Quality of Life in Childhood Epilepsy Questionnaire - 55 (QOLCE-55), and incidence of adverse events.
    METHODS: This prospective, observational study was conducted in KIMS, Bhubaneswar, India, from January 2021 to November 2022. Children of 2-12 years of age were treated with monotherapy of either newer antiepileptics, e.g., levetiracetam, topiramate, and oxcarbazepine or older antiepileptics, e.g., valproic acid, phenytoin, phenobarbital, and carbamazepine. Univariate and multivariate analyses were performed for the assessment of predictors. We used R software (version 4.1.1) for data analysis.
    RESULTS: One hundred and ninety-eight (91.7%) of 216 enrolled participants completed this study. The mean age of the study population was 5.2 years and 117 (59%) of them were males. The univariate analysis showed that male gender, low birth weight, preterm birth, assisted vaginal delivery and site-specific epilepsy, and maternal history of epilepsy were significant predictors of combination therapy and reduced seizure-free period. There was a non-significant difference regarding the improvement of QOLCE-55 scores. None of the adverse events were serious.
    CONCLUSIONS: Perinatal complications and maternal history of epilepsy contribute significantly toward the efficacy of antiepileptics. However, multivariate analysis did not yield statistically significant results.
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  • 文章类型: Multicenter Study
    背景:双相情感障碍(BD)患者普遍存在精神病症状。然而,在西方人群中进行了几乎所有关于有(BDP)和无(BDP-)精神病症状的患者之间的社会人口统计学和临床因素差异的研究,在中国已知的信息有限。
    方法:招募来自中国7个中心的555例BD患者。采用标准化程序收集患者的社会人口统计学和临床特征。根据终生精神病症状的存在,将患者分为BDP或BDP-组。采用Mann-WhitneyU检验或卡方检验分析BD+和BD-患者在社会人口统计学和临床因素方面的差异。采用多因素logistic回归分析探讨与BD患者精神病性症状独立相关的因素。根据患者的诊断类型分为BDI组和BDII组后,再次进行上述分析。
    结果:共有35名患者拒绝参加,其余520例患者纳入分析.与BD-患者相比,患有BDP+的患者在第一次情绪发作时更有可能被诊断为BDI和躁狂/轻躁狂/混合极性。此外,他们更容易被误诊为精神分裂症,而不是重度抑郁症,住院的频率更高,使用抗抑郁药的频率较低,并使用了更多的抗精神病药和情绪稳定剂。多变量分析显示BDI的诊断,更常见的误诊为精神分裂症和其他精神障碍,很少被误诊为重度抑郁症,更频繁的终生自杀行为,更频繁的住院,抗抑郁药的使用频率较低,更频繁使用抗精神病药和心境稳定剂与BD患者的精神病症状独立相关.将患者分为BDI组和BDII组,我们观察到社会人口统计学和临床因素的显着差异,以及两组之间精神病特征的临床人口学相关性。
    结论:BD+和BD-患者的临床因素差异显示出跨文化一致性,但是精神病特征的临床人口学相关性的结果没有。发现BDI和BDII患者之间存在明显差异。探索BD精神病特征的未来工作需要考虑诊断类型和文化差异。
    背景:这项研究于2013年1月18日首次在ClinicalTrials.gov(https://clinicaltrials.gov/)的网站上注册。它的注册号是NCT01770704。
    Psychotic symptoms are prevalent in patients with bipolar disorder (BD). However, nearly all previous studies on differences in sociodemographic and clinical factors between patients with (BD P +) and without (BD P-) psychotic symptoms were conducted in Western populations, and limited information is known in China.
    A total of 555 patients with BD from seven centers across China were recruited. A standardized procedure was used to collect patients\' sociodemographic and clinical characteristics. The patients were divided into BD P + or BD P- groups based on the presence of lifetime psychotic symptoms. Mann-Whitney U test or chi-square test was used to analyze differences in sociodemographic and clinical factors between patients with BD P + and BD P-. Multiple logistic regression analysis was conducted to explore factors that were independently correlated with psychotic symptoms in BD. All the above analyses were re-conducted after the patients were divided into BD I and BD II group according to their types of diagnosis.
    A total of 35 patients refused to participate, and the remaining 520 patients were included in the analyses. Compared with patients with BD P-, those with BD P + were more likely to be diagnosed with BD I and mania/hypomania/mixed polarity in the first mood episode. Moreover, they were more likely to be misdiagnosed as schizophrenia than major depressive disorder, were hospitalized more often, used antidepressants less frequently, and used more antipsychotics and mood stabilizers. Multivariate analyses revealed that diagnosis of BD I, more frequent misdiagnosis as schizophrenia and other mental disorders, less frequent misdiagnosis as major depressive disorder, more frequent lifetime suicidal behavior, more frequent hospitalizations, less frequent use of antidepressants, more frequent use of antipsychotics and mood stabilizers were independently correlated with psychotic symptoms in BD. After dividing the patients into BD I and BD II groups, we observed notable differences in sociodemographic and clinical factors, as well as clinicodemographic correlates of psychotic features between the two groups.
    Differences in clinical factors between patients with BD P + and BD P- showed cross-cultural consistency, but results on the clinicodemographic correlates of psychotic features were not. Notable differences between patients with BD I and BD II were found. Future work exploring the psychotic features of BD needs to take types of diagnosis and cultural differences into consideration.
    This study was first registered on the website of the ClinicalTrials.gov ( https://clinicaltrials.gov/ ) on 18/01/2013. Its registration number is NCT01770704.
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  • 文章类型: Journal Article
    本研究使用三个不同的模型来分析单变量时间序列数据:霍尔特指数平滑模型,自回归移动平均积分(ARIMA)模型,和神经网络自回归(NNAR)模型。使用样本内预测和准确性指标评估每个模型的有效性,包括平均绝对百分比误差,平均绝对平方误差,和均方根对数误差。使用拟合值与观测值最相似的模型预测印度接下来5年的种植面积。这是通过执行残差分析来确定的。最初发现用于研究的时间序列数据是非平稳的。然后,在模型可用于分析和预测之前,使用差分将其转换为平稳数据。
    This study uses three distinct models to analyse a univariate time series of data: Holt\'s exponential smoothing model, the autoregressive integrated moving average (ARIMA) model, and the neural network autoregression (NNAR) model. The effectiveness of each model is assessed using in-sample forecasts and accuracy metrics, including mean absolute percentage error, mean absolute square error, and root mean square log error. The area under cultivation in India for the following 5 years is predicted using the model whose fitted values are most like the observed values. This is determined by performing a residual analysis. The time series data used for the study was initially found to be non-stationary. It is then transformed into stationary data using differencing before the models can be used for analysis and prediction.
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  • 文章类型: Journal Article
    神经影像数据集的分析和解释已成为多学科的努力,不仅依靠统计方法,但越来越多地与其他脑源性特征如基因表达相关,组织学数据,和功能以及认知架构。这里,我们引入BrainStat-一个工具箱,用于(i)基于体积和表面的脑成像数据集中的单变量和多变量线性模型,和(ii)关于死后基因表达和组织学的空间图的结果的多域特征关联,基于任务的功能磁共振成像荟萃分析,以及几种常见表面模板上的静息状态功能磁共振成像基序。将统计数据和特征关联结合到交钥匙工具箱中,简化了分析过程并加速了跨模式研究。工具箱在Python和MATLAB中实现,在神经成像和神经信息学领域广泛使用的两种编程语言。BrainStat是公开可用的,并由可扩展的文档补充。
    Analysis and interpretation of neuroimaging datasets has become a multidisciplinary endeavor, relying not only on statistical methods, but increasingly on associations with respect to other brain-derived features such as gene expression, histological data, and functional as well as cognitive architectures. Here, we introduce BrainStat - a toolbox for (i) univariate and multivariate linear models in volumetric and surface-based brain imaging datasets, and (ii) multidomain feature association of results with respect to spatial maps of post-mortem gene expression and histology, task-based fMRI meta-analysis, as well as resting-state fMRI motifs across several common surface templates. The combination of statistics and feature associations into a turnkey toolbox streamlines analytical processes and accelerates cross-modal research. The toolbox is implemented in both Python and MATLAB, two widely used programming languages in the neuroimaging and neuroinformatics communities. BrainStat is openly available and complemented by an expandable documentation.
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  • 文章类型: Journal Article
    (1)背景:积极的刺激可以触发情感困扰,对个体具有不利的作用。导致精神障碍发展和进化的一些因素可能是遗传的。这项研究的目的是确定人类白细胞抗原(HLA)基因与情感困扰谱(PDA)之间的某些相关性。(2)方法:应用焦虑心理测评工具对115人进行调查。I类的低分辨率HLA等位基因(HLA-A,HLA-B,从血液中提取DNA后,通过PCR技术鉴定出HLA-C)和II类(HLA-DRB1和HLA-DQB1)。取决于PDA,将受试者分为两组:一组PDA低,另一组PDA中,高。采用IBMSPSS软件比较两组HLA等位基因频率。(3)结果:单因素分析显示HLA-A位点(A*01,A*30)显著相关,HLA-B(B*08),和HLA-DRB1(DRB1*11)与低PDA组和HLA-A基因座(A*32),HLA-B(B*52),HLA-C(C*12)与中、高PDA组比较。(4)结论:本研究强调了HLA等位基因与焦虑症之间的潜在关联。
    (1) Background: Affective distress can be triggered by aggressive stimuli with an unfavorable role for the individual. Some of the factors that lead to the development and evolution of a mental disorder can be genetic. The aim of this study is to determine some correlations between the human leukocyte antigen (HLA) genes and the affective distress profile (PDA). (2) Methods: A psychological assessment and testing tool for anxiety was applied to 115 people. The low-resolution HLA alleles of class I (HLA-A, HLA-B, and HLA-C) and class II (HLA-DRB1 and HLA-DQB1) were identified by the PCR technique after DNA extraction from the blood. Depending on the PDA, the subjects were divided into two groups: a group with a low PDA and another one with a medium and high PDA. The IBM SPSS software was used to compare the frequency of HLA alleles between the two groups. (3) Results: The univariate analysis revealed a significant association of the HLA-A locus (A*01, A*30), HLA-B (B*08), and HLA-DRB1 (DRB1*11) with the low PDA group and of the HLA-A locus (A*32), HLA-B (B*52), and HLA-C (C*12) with the medium and high PDA group. (4) Conclusions: The present study highlighted potential associations between HLA alleles and anxiety disorders.
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  • 文章类型: Journal Article
    尽管治疗方法不断更新,但肝细胞癌(HCC)仍然是无法治愈的恶性肿瘤。基质金属蛋白酶(MMPs)促进HCC的进展;然而,关于MMP在HCC中起主要作用尚无共识。在本研究中,我们分析了肝癌中差异表达的基因,尤其是MMPs,使用癌症基因组图谱数据库与邻近组织进行比较。使用差异表达基因的KEGG富集途径包括细胞外基质-受体相互作用,与MMP相关。我们发现在MMP家族中,与邻近组织相比,只有MMP1,MMP3,MMP8,MMP9,MMP11,MMP12,MMP14,MMP15,MMP20,MMP21和MMP24显着增加。至关重要的是,生存和单变量分析表明,只有MMPs1、9、12和14预测总体生存较差;多变量Cox分析和列线图表明,只有MMP1是HCC的不良预后生物标志物。此外,我们观察到未表征的细胞显着富集,但在HCC组织中巨噬细胞减少。与HCC中巨噬细胞减少一致,MMP1与巨噬细胞呈负相关,但与未表征的细胞呈正相关,表明MMP1的主要生产者是未表征的细胞。此外,MMP1的表达与肝癌的免疫反应呈负相关。一起来看,我们的研究结果表明,MMP1是HCC患者预后不良的主要生物标志物,抗MMP1可能是一种值得深入研究的新疗法.
    Hepatocellular carcinoma (HCC) remains an incurable malignancy despite the treatment methods being continually updated. Matrix metalloproteinases (MMPs) promote the progression of HCC; however, no consensus exists on which MMP plays the predominant role in HCCs. In the present study, we analyzed differentially expressed genes in HCCs, especially MMPs, compared with adjacent tissues using the Cancer Genome Atlas database. The KEGG enrichment pathway using differentially expressed genes included extracellular matrix-receptor interaction, which was correlated with MMPs. We found that among the MMP family, only MMP1, MMP3, MMP8, MMP9, MMP11, MMP12, MMP14, MMP15, MMP20, MMP21, and MMP24 significantly increased in HCCs compared with adjacent tissues. Crucially, survival and univariate analyses indicated that only MMPs 1, 9, 12, and 14 predict poor overall survival; however, multivariate Cox analysis and a nomogram demonstrated that only MMP1 is a poor prognostic biomarker for HCCs. In addition, we observed significant enrichment of uncharacterized cells but decreased macrophages in HCC tissues. Consistent with decreased macrophages in HCCs, MMP1 was negatively associated with macrophages but positively correlated with uncharacterized cells, indicating that the main producer of MMP1 is uncharacterized cells. Furthermore, MMP1 expression was negatively correlated with immune responses of HCCs. Taken together, our findings indicated that MMP1 is a poor and predominant prognostic biomarker for patients with HCC and that anti-MMP1 may be a novel therapy that is worth studying in depth.
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  • 文章类型: Journal Article
    小麦基因型对产量的高性能和稳定性,谷物蛋白质含量(GPC),和其他理想的性状对于品种发育以及食物和营养安全至关重要。同样,每当做出基因型选择决定时,应彻底调查环境基因型(G×E)相互作用(GEI)并有利地利用。本研究计划有以下两个主要目标:1)确定四个位置(Ludhiana,Ballowal,Patiala,和旁遮普邦的Bathinda),印度;2)在各种环境中选择具有高GPC和产量的最佳基因型。不同的单变量[Eberhart和Ruessll的模型;Perkins和Jinks的模型;Wrike的生态价;以及Francis和Kannenberg的模型],多变量(AMMI和GGE双绘图),和相关性分析用于解释来自多环境试验(MET)的数据。因此,单变量和多变量分析在表现最佳和稳定的基因型方面提供了几乎相似的结果.方差分析显示,由于环境的变化,基因型,对于所有研究的性状,GEI在0.01和0.001的显着性水平上都非常显着。开花的日子,植物高度,每穗小穗,每穗粒数,天成熟,1000粒重特别受环境影响,而产量主要受环境和GEI的影响。基因型,另一方面,对GPC的影响大于环境条件。因此,多环境调查对于确定小麦基因型选择的GEI是必要的,因为GEI对所有评估的性状都非常重要。产量,1000粒重,每穗小穗,观察到成熟天数呈正相关,暗示了它们同时选择提高产量的可行性。然而,观察到GPC与产率呈负相关。Patiala被发现是产量和GPC最具鉴别力的环境,也是GPC最有效的代表环境。而Ludhiana被认为是产量最有效的代表环境。最终,两个NIL(BWL7508和BWL7511)在所有环境中选择作为产率和GPC两者的顶部。
    The high performance and stability of wheat genotypes for yield, grain protein content (GPC), and other desirable traits are critical for varietal development and food and nutritional security. Likewise, the genotype by environment (G × E) interaction (GEI) should be thoroughly investigated and favorably utilized whenever genotype selection decisions are made. The present study was planned with the following two major objectives: 1) determination of GEI for some advanced wheat genotypes across four locations (Ludhiana, Ballowal, Patiala, and Bathinda) of Punjab, India; and 2) selection of the best genotypes with high GPC and yield in various environments. Different univariate [Eberhart and Ruessll\'s models; Perkins and Jinks\' models; Wrike\'s Ecovalence; and Francis and Kannenberg\'s models], multivariate (AMMI and GGE biplot), and correlation analyses were used to interpret the data from the multi-environmental trial (MET). Consequently, both the univariate and multivariate analyses provided almost similar results regarding the top-performing and stable genotypes. The analysis of variance revealed that variation due to environment, genotype, and GEI was highly significant at the 0.01 and 0.001 levels of significance for all studied traits. The days to flowering, plant height, spikelets per spike, grain per spike, days to maturity, and 1000-grain weight were specifically affected by the environment, whereas yield was mainly affected by the environment and GEI. Genotypes, on the other hand, had a greater impact on the GPC than environmental conditions. As a result, a multi-environmental investigation was necessary to identify the GEI for wheat genotype selection because the GEI was very significant for all of the evaluated traits. Yield, 1000-grain weight, spikelet per spike, and days to maturity were observed to have positive correlations, implying the feasibility of their simultaneous selection for yield enhancement. However, GPC was observed to have a negative correlation with yield. Patiala was found to be the most discriminating environment for both yield and GPC and also the most effective representative environment for GPC, whereas Ludhiana was found to be the most effective representative environment for yield. Eventually, two NILs (BWL7508, and BWL7511) were selected as the top across all environments for both yield and GPC.
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