profiling

剖析
  • 文章类型: Journal Article
    背景:疫苗犹豫是一个全球关注的复杂问题。由于护士在提供患者护理和塑造疫苗公众意见方面发挥着至关重要的作用,必须采取干预措施来解决护理中的疫苗犹豫。因此,确定导致犹豫的特征和态度的概况可能有助于确定针对量身定制的全球疫苗接种运动的特定重点领域.这项研究的目的是概述护理界对COVID-19和流感疫苗犹豫不决的特征和态度。
    方法:这种多站点,横断面研究从英国招募了1967名注册护士和1230名护理学生,芬兰,和意大利在2023年3月至9月之间。
    方法:数据收集涉及采用疫苗接种态度检查(VAX)量表的在线调查,卑尔根社交媒体成瘾量表,以及与社会人口统计学和职业特征有关的问题。基于VAX量表,使用k均值聚类分析来识别各种犹豫簇。单因素方差分析和卡方检验用于确定社会人口统计学特征的显著差异,职业因素,疫苗接种的态度,和集群之间的社交媒体使用情况。
    结果:确定了三个不同的簇。概况A显示了很高的疫苗信心,配置文件B显示出轻微的犹豫,配置文件C报告了高度的犹豫。在配置文件C中,在年轻人中发现了更高水平的疫苗犹豫,文化程度较低的护士经验不足。虽然受过高等教育的老年护士,担任高级角色的人,对疫苗更有信心,并且有一致的接受流感和COVID-19疫苗接种的历史(概况A)。研究发现意大利护士非常犹豫(简介C),英国护士高度自信(简介A),和芬兰护士均匀分布在自信之间,有点犹豫,高度犹豫(简介A,B,C,分别)。此外,Instagram和TikTok的更频繁使用与疫苗犹豫有关(配置文件B和C),LinkedIn和X在对疫苗有信心的个体中更为常见(概况A)。
    结论:这项研究在国际护士样本中确定了与疫苗犹豫相关的特定社会人口统计学和职业因素。此外,确定了导致犹豫的态度,对疫苗未来不可预见的影响的担忧被认为是一种批评态度,可能会削弱信心,增加护理方面的犹豫。这项研究还揭示了社交媒体平台对疫苗犹豫的影响,因此,指出哪些平台可以有效地向全球护理社区传播疫苗接种运动。
    结论:全球疫苗接种运动应侧重于具体概况和集群,以促进国际护理界的疫苗接种。在职业生涯早期赋予护士权力将有助于灌输积极的疫苗接种行为,确保在整个个人职业生涯中以及以后持续接种疫苗,对促进公共卫生层面的疫苗接种也有影响。
    BACKGROUND: Vaccine hesitancy is a complex issue of global concern. As nurses play a vital role in delivering patient care and shaping public opinions on vaccines, interventions to address vaccine hesitancy in nursing are imperative. As such, identifying profiles of characteristics and attitudes contributing to hesitancy may help identify specific areas of focus to target tailored global vaccination uptake campaigns. The purpose of this study was to profile the characteristics and attitudes contributing to hesitancy toward COVID-19 and Influenza vaccines in the nursing community.
    METHODS: This multisite, cross-sectional study recruited 1967 registered nurses and 1230 nursing students from the United Kingdom, Finland, and Italy between March and September 2023.
    METHODS: Data collection involved an online survey adopting the Vaccination Attitudes Examination (VAX) Scale, the Bergen Social Media Addiction Scale, and questions pertaining to sociodemographic and occupational characteristics. A k-means cluster analysis was used to identify various clusters of hesitancy based on the VAX Scale. One-way ANOVA and chi-square tests were used to identify significant differences in sociodemographic characteristics, occupational factors, vaccination attitudes, and social media usage between the clusters.
    RESULTS: Three distinct clusters were identified. Profile A showed high vaccine confidence, profile B displayed slight hesitancy, and profile C reported high levels of hesitancy. In profile C, higher levels of vaccine hesitancy were identified in younger, less experienced nurses with lower educational attainment. While older nurses with higher educational attainment, who were in senior roles, were more vaccine-confident and had a consistent history of accepting the Influenza and COVID-19 vaccinations (profile A). The study found Italian nurses highly hesitant (profile C), British nurses highly confident (profile A), and Finnish nurses evenly distributed between confident, slightly hesitant, and highly hesitant (profiles A, B, and C, respectively). In addition, more frequent usage of Instagram and TikTok was associated with vaccine hesitancy (profiles B and C), and LinkedIn and X were more common among vaccine-confident individuals (profile A).
    CONCLUSIONS: This study has identified specific sociodemographic and occupational factors that are related to vaccine hesitancy in an international sample of nurses. Additionally, attitudes contributing to hesitancy were identified, with worries about unforeseen future effects of the vaccine being identified as a critical attitude that may undermine confidence and increase hesitancy in nursing. This study also sheds light on the influence that social media platforms have on vaccine hesitancy and, as such, indicates which platforms are effective to disseminate vaccination campaigns to global nursing communities.
    CONCLUSIONS: Global vaccination campaigns should focus on specific profiles and clusters to promote vaccination in the international nursing community. Empowering nurses early in their careers will help to instill positive vaccination behaviors, ensuring a sustained uptake of vaccinations throughout the individual\'s career and beyond, with an impact on promoting vaccination at the public health level as well.
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  • 文章类型: Journal Article
    背景:移动健康(mHealth)解决方案可以提高质量,可访问性,和卫生服务的公平性,促进早期康复。对于听力损失的人,mHealth应用程序可能旨在支持听觉诊断中的决策过程,并向用户提供治疗建议(例如,助听器需要)。对于一些人来说,这样的mHealth应用程序可能是与听力诊断服务的第一次接触,应该激励听力损失的用户有针对性地寻求专业帮助。然而,个性化的治疗建议是可能的,只有通过了解个人的资料有关的结果的兴趣。
    目的:本研究旨在表征重复使用基于应用程序的听力测试后或多或少倾向于寻求专业帮助的个体。目标是得出相关的听力相关特征和个性特征,为mHealth听力解决方案的用户提供个性化治疗建议。
    方法:总共,185名(n=106,57.3%的女性)患有主观听力损失的无辅助老年人(平均年龄63.8,SD6.6y)参加了一项移动研究。我们收集了一系列全面的83项听力相关和心理测量的横截面和纵向数据,这些测量先前发现可以预测听力帮助寻求。在研究结束时和2个月后,将寻求帮助的准备度评估为结果变量。参与者使用几种有监督的机器学习算法(随机森林,天真贝叶斯,和支持向量机)。使用特征重要性分析确定了用于预测的最相关特征。
    结果:算法正确预测了65.9%(122/185)至70.3%(130/185)的研究结束时寻求帮助的行动,随访时分类准确率达到74.8%(98/131)。除了听力表现之外,最重要的分类特征是日常生活中听力损失的感知后果,对助听器的态度,寻求帮助的动机,身体健康,感官敏感性人格特质,神经质,和收入。
    结论:这项研究有助于识别个体特征,预测自我报告听力损失的老年人寻求帮助。建议在个人分析算法中实施它们,并在mHealth听力应用程序中得出有针对性的建议。
    BACKGROUND: Mobile health (mHealth) solutions can improve the quality, accessibility, and equity of health services, fostering early rehabilitation. For individuals with hearing loss, mHealth apps might be designed to support the decision-making processes in auditory diagnostics and provide treatment recommendations to the user (eg, hearing aid need). For some individuals, such an mHealth app might be the first contact with a hearing diagnostic service and should motivate users with hearing loss to seek professional help in a targeted manner. However, personalizing treatment recommendations is only possible by knowing the individual\'s profile regarding the outcome of interest.
    OBJECTIVE: This study aims to characterize individuals who are more or less prone to seeking professional help after the repeated use of an app-based hearing test. The goal was to derive relevant hearing-related traits and personality characteristics for personalized treatment recommendations for users of mHealth hearing solutions.
    METHODS: In total, 185 (n=106, 57.3% female) nonaided older individuals (mean age 63.8, SD 6.6 y) with subjective hearing loss participated in a mobile study. We collected cross-sectional and longitudinal data on a comprehensive set of 83 hearing-related and psychological measures among those previously found to predict hearing help seeking. Readiness to seek help was assessed as the outcome variable at study end and after 2 months. Participants were classified into help seekers and nonseekers using several supervised machine learning algorithms (random forest, naïve Bayes, and support vector machine). The most relevant features for prediction were identified using feature importance analysis.
    RESULTS: The algorithms correctly predicted action to seek help at study end in 65.9% (122/185) to 70.3% (130/185) of cases, reaching 74.8% (98/131) classification accuracy at follow-up. Among the most important features for classification beyond hearing performance were the perceived consequences of hearing loss in daily life, attitude toward hearing aids, motivation to seek help, physical health, sensory sensitivity personality trait, neuroticism, and income.
    CONCLUSIONS: This study contributes to the identification of individual characteristics that predict help seeking in older individuals with self-reported hearing loss. Suggestions are made for their implementation in an individual-profiling algorithm and for deriving targeted recommendations in mHealth hearing apps.
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  • 文章类型: Journal Article
    Breast cancer (BC) is a global public health problem attributed to varying risk factors. The designing of a targeted screening program focused on at-risk women can be cost-effective in reducing its burden. A hospital based case control study was conducted on 138 cases of breast cancer and 169 healthy controls to investigate the reproductive and non-reproductive risk factors for breast cancer in Pakistani women. The odds ratios (ORs) and 95% confidence intervals (CIs) were computed with unconditional logistic regression. Almost all i.e. 97.83% of cases were married (OR=5.03),70.29% were illiterate (OR=1.88), 73.19% were aged >35 years (OR=0.632) and 81.16% belonged to the poor class(OR=1.81). Early age at menarche (OR, 2.55; 95% CI 1.50-4.31, P=0.0001), hormone replacement therapy (OR=2.057, 95% CI 1.283-3.295, P= 0.002) early pregnancy (OR,2.23, 95% CI 1.29-3.88, P=0.004), history of miscarriage (OR, 2.11, 95% CI 1.32-3.39,P=0.002) & oral contraceptive use (OR, 2.76, 95% CI 1.54-4.92, P= 0.006) were significantly associated with BC. The study highlights the dire need for effective public health programs for high-risk women to address this highly fatal disease.
    Le cancer du sein (BC) est un problème de santé publique mondial attribué à divers facteurs de risque. La conception d\'un programme de dépistage ciblé axé sur les femmes à risque peut s\'avérer rentable pour réduire son fardeau. Une étude cas-témoins en milieu hospitalier a été menée sur 138 cas de cancer du sein et 169 témoins sains pour étudier les facteurs de risque reproductifs et non reproductifs du cancer du sein chez les femmes pakistanaises. Les rapports de cotes (OR) et les intervalles de confiance (IC) à 95 % ont été calculés par régression logistique inconditionnelle. La quasi-totalité soit 97,83% des cas étaient mariés (OR=5,03), 70,29% étaient analphabètes (OR=1,88), 73,19% étaient âgés de >35 ans (OR=0,632) et 81,16% appartenaient à la classe pauvre (OR=1,81). . Âge précoce aux premières règles (OR = 2,55 ; IC à 95 % 1,50-4,31, P = 0,0001), traitement hormonal substitutif (OR = 2,057, IC à 95 % 1,283-3,295, P = 0,002) grossesse précoce (OR , 2,23, IC à 95 % 1,29-3,88, P=0,004), les antécédents de fausse couche (OR, 2,11, IC à 95 % 1,32-3,39, P=0,002) et l\'utilisation de contraceptifs oraux (OR, 2,76, IC à 95 % 1,54-4,92, P= 0,006) étaient significativement associé à la Colombie-Britannique. L\'étude souligne le besoin urgent de programmes de santé publique efficaces destinés aux femmes à haut risque afin de lutter contre cette maladie hautement mortelle.
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  • 文章类型: Journal Article
    墨西哥城是墨西哥拳击手数量最多的地方;事实上,它是该国第一个以pugilism为导向开设教育和体育促进技术学士学位的城市。这项横断面研究旨在确定进入体育学士学位的申请人的身体功能特征。共有227名年轻运动员(44F;183M;15.65(1.79)岁;63.66(14.98)kg;>3年的拳击经验)参加了这项研究。身体质量(BM),最大等距手柄(HG)强度,反运动跳跃的高度(CMJ),直拳的速度(PV),和后手冲头冲击力(PIF)进行了测量。年轻的拳击手使用无监督的机器学习算法进行了分析,优势概率(ρ)被计算为差异的影响大小。K-Medoids聚类导致两个独立于性别的显着不同组:概况1(n=118)和概况2(n=109)。除了BM,分布2在统计学上较高(p<0.001),在PIF的优越性方面有明显区别(ρ=0.118),PIF与BM之比(ρ=0.017),PIF与HG的比值(ρ=0.079)和PIF与BM+HG的比值(ρ=0.008)。总的来说,强度水平解释了大部分数据变化;因此,建议实施旨在评估拳击手势中等距水平和应用强度的测试是合理的。识别这些身体功能特征可能有助于在年轻拳击运动员的运动专业化期间区分训练计划。
    Mexico City is the location with the largest number of boxers in Mexico; in fact, it is the first city in the country to open a Technological Baccalaureate in Education and Sports Promotion with a pugilism orientation. This cross-sectional study aimed to determine the physical-functional profile of applicants for admission to the baccalaureate in sports. A total of 227 young athletes (44F; 183M; 15.65 (1.79) years; 63.66 (14.98) kg; >3 years of boxing experience) participated in this study. Body mass (BM), maximal isometric handgrip (HG) strength, the height of the countermovement jump (CMJ), the velocity of straight boxing punches (PV), and the rear hand punch impact force (PIF) were measured. The young boxers were profiled using unsupervised machine learning algorithms, and the probability of superiority (ρ) was calculated as the effect size of the differences. K-Medoids clustering resulted in two sex-independent significantly different groups: Profile 1 (n = 118) and Profile 2 (n = 109). Except for BM, Profile 2 was statistically higher (p < 0.001) with a clear distinction in terms of superiority on PIF (ρ = 0.118), the PIF-to-BM ratio (ρ = 0.017), the PIF-to-HG ratio (ρ = 0.079) and the PIF-to-BM+HG ratio (ρ = 0.008). In general, strength levels explained most of the data variation; therefore, it is reasonable to recommend the implementation of tests aimed at assessing the levels of isometric and applied strength in boxing gestures. The identification of these physical-functional profiles might help to differentiate training programs during sports specialization of young boxing athletes.
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  • 文章类型: Journal Article
    虽然指纹是一种高度使用的识别手段,并非所有留在潜在犯罪现场的指纹都可以用于识别目的。在某些情况下,指纹可能被弄脏了,部分保留或与其他印刷品重叠,因此扭曲了脊图案,因此可能不适合识别。Further,指纹残基产生用于DNA分析的遗传物质的丰度非常低。在这种情况下,指纹可用于检索诸如性别的基本供体信息。本文的重点是评估区分潜在指纹供体性别的可能性。分析方法是使用22名男性和22名女性供体对潜在指纹的化合物进行GC-MS分析。结果显示44个鉴定的化合物。两种酒精,十八醇C18和二十烷醇C20,被发现在男性和女性供体之间显示出统计学上显著的差异。也有一些证据表明,根据支链脂肪酸的分布来区分指纹供体的性别,作为游离化合物或在蜡酯中酯化。
    While fingerprints are a highly used means of identification, not every fingerprint left behind on a potential crime scene can be used for identification purposes. In some cases, the fingerprint may be smudged, partially preserved or overlapping with other prints hence distorting the ridge pattern and may therefore be not appropriate for identification. Further, fingermark residue yields a very low abundance of genetic material for DNA analysis. In such cases, the fingermark may be used to retrieve basic donor information such as sex. The focus of this paper was to assess the possibility of differentiating between the sexes of the donor of latent fingermarks. Analytical method was GC-MS analysis of the chemical compounds of latent fingermarks using 22 male and 22 female donors. Results showed 44 identified compounds. Two alcohols, octadecanol C18 and eicosanol C20 , were found to show a difference that was statistically significant between male and female donors. There is also some evidence for the possibility of distinguishing sex of the fingermark donor based on the distribution of branched chain fatty acids, as free compounds or esterified in wax esters.
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  • 文章类型: Journal Article
    目的:鼻咽癌(NPC)是东南亚地区常见的上呼吸道恶性肿瘤,与慢性EBV感染有关。microRNAs(miRNAs)调控与鼻咽癌癌变有关的基因表达.然而,这种循环RNA分子的作用和临床效用仍然未知。因此,这项研究检查了miRNA的循环及其与临床数据的关联。
    方法:提取160例NPC的血浆样本和80例非肿瘤样本,以评估和验证基因表达。使用qPCR分析水平表达方法的相对定量进行定量表达。还使用了在NPC的肿瘤发生中涉及生物信号传导的内在细胞作用。
    结果:NPC样品的定量显著性分析的结果显示miR-29c-3p降低(倍数变化1.16;p<0.05)和195-5p表达增加(倍数变化1.157;p<0.05)。此外,使用4.45倍变化(中位数分别为31.45±1.868和24.96±1.872;p<0.0005),验证了已知肿瘤与非肿瘤和显著变化的血浆NPC中hsa-miR-29c-3p的表达.miR-29c具有与T原发状态相关的2.14倍变化,中位数分别为31.99±1.319和31.35±2.412(p<0.05)。具有倍数变化1.99的阶段状态也分别具有31.98±1.105和31.21±2.355的中值水平(p值<0.05)。此外,miR-29c低表达的节点状态,倍数变化为1.17,中位水平分别为32.78±2.221和31.33±1.689(p值为0.7).生物信息学分析确立了miR-29在鼻咽癌进展中的作用和功能,细胞死亡和存活,细胞发育,细胞功能,通过抑制COL4A来维持细胞,PI3K,VEGFA,JUN,CDK6
    结论:总体而言,我们得出结论,miR-29c表达降低与不良临床状态相关,并可能抑制NPC的5个靶基因。
    Nasopharyngeal Carcinoma (NPC) is an upper respiratory tract cancer prevalent in Southeast Asia and related to chronic EBV infection. microRNAs (miRNAs) regulate gene expression implicated in NPC\'s carcinogenesis. However, this circulating RNA molecule\'s role and clinical utility remain unknown. Therefore, this study examined the circulation of miRNAs and their association with clinical data.
    160 plasma samples of NPC and 80 non-tumor samples were extracted to evaluate and validate the gene expressions. Quantification expression was performed using relative quantification of qPCR analysis level expression methods. The intrinsic cellular roles involving biological signaling in NPC\'s oncogenesis using Ingenuity Pathways Analysis (IPA) were also used.
    The results of the quantification significance profiling of NPC samples revealed decreased miR- 29c-3p (fold change 1.16; p<0.05) and increased 195-5p expression (fold change 1.157; p<0.05). Furthermore, the validation of hsa-miR-29c-3p expression on plasma NPC with known tumor vs. non-tumor and significant changes was also performed using a fold change of 4.45 (medians of 31.45 ± 1.868 and 24.96 ± 1.872, respectively; p<0.0005). miR-29c had a 2.14 fold change correlated with T primary status with a median of 31.99±1.319 and 31.35±2.412, respectively (p<0.05). Stage status with fold change 1.99 also had median levels of 31.98±1.105 and 31.21 ± 2.355, respectively (p-value <0.05). Furthermore, the node\'s status for the lower expression of miR-29c with fold change 1.17 had median levels of 32.78 ± 2.221 and 31.33 ± 1.689, respectively (p-value of 0.7). Bioinformatics analysis established the roles and functions of miR-29 in NPC progression, cell death and survival, cellular development, cellular function, and cell maintenance by inhibiting COL4A, PI3K, VEGFA, JUN, and CDK6.
    Overall, we conclude that decreased miR-29c expression is associated with poor clinical status and might inhibit NPC\'s five target genes.
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  • 文章类型: Journal Article
    柑橘汁含氧杂环糖苷配基(OHAs)的概况,它们是值得注意的次级代谢物标记,在柑橘和柚子汁可能是掺假的情况下,用于评估甜橙和葡萄柚汁的真实性。39个已知的OHAs,包括10种甲氧基黄酮,13香豆素,和16种呋喃香豆素,以及13个初步筛选的OHAs,用橙色分析,普通话,葡萄柚和柚子汁使用我们新开发的高分辨率HPLC-UV和荧光检测方法。从158个纯果汁样品中获得定量OHA谱,以使用组学策略建立纯度判别模型。OHA变量的减少表明,三种重要的甲氧基黄酮,即异辛塞素,橘皮素和西能塞素在甜橙汁和橘子汁之间提供了最佳的辨别能力。柚子有两种亚型,沙天友集团和文丹集团,其中果汁应与葡萄柚汁分开比较。五个OHAs,即Meranzin,3,5,6,7,8,3',4\'-七乙氧基黄酮,蛇床子,6\',7\'-epoxybergamottin,和佛手香素被发现可以区分沙田油组的柚子汁和葡萄柚汁;而三个OHAs,即Bergaptol,isometranzin,和6\',7'-二羟基佛手香素能够将柚子汁的文丹组与葡萄柚汁区分开。所建立的偏最小二乘判别分析(PLS-DA)模型能够检测甜橙汁中10%的橘子汁和柚子汁中10%的柚子汁,允许以良好的可靠性快速预筛选过量添加(预测的均方根误差,RMSEP<5%)。
    Profiles of citrus juice oxygenated heterocyclic aglycones (OHAs), which are notable marker secondary metabolites, were used to assess the authenticity of sweet orange and grapefruit juices in situations where mandarin and pomelo juices might be adulterants. Thirty-nine known OHAs, including 10 methoxyflavones, 13 coumarins, and 16 furanocoumarins, as well as 13 tentatively screened OHAs, were analyzed in orange, mandarin, grapefruit and pomelo juices using our newly developed high-resolution HPLC-UV and fluorescence detection method. Quantitative OHA profiles from 158 pure juice samples were obtained to establish a purity discriminant model using an omics strategy. Reduction of OHA variables showed that three important methoxyflavones, i.e. isosinensetin, tangeretin and sinensetin provided the best discrimination ability between sweet orange and mandarin juices. There are two subtypes of pomelos, Shatianyou Group and Wendan Group, of which juices should be separately compared to grapefruit juice. Five OHAs, namely meranzin, 3,5,6,7,8,3\',4\'-heptamethoxyflavone, osthole, 6\',7\'-epoxybergamottin, and bergamottin were found to discriminate Shatianyou Group of pomelo juice from grapefruit juice; whereas three OHAs, namely bergaptol, isomeranzin, and 6\',7\'-dihydroxybergamottin were able to discriminate Wendan Group of pomelo juice from grapefruit juice. The established partial least squares discriminant analysis (PLS-DA) models were capable of detecting as little as 10% mandarin juice in sweet orange juice and 10% pomelo juice in grapefruit juice, allowing for fast prescreening of excess addition with good reliability (root mean square error of prediction, RMSEP < 5%).
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  • 文章类型: Journal Article
    对与食物相关的经历带来愉悦的因素的更多理解可以增加对不同饮食行为的潜在过程的理解。我们探讨了食物愉悦的驱动因素,以及某些消费者特征是否与特定的食物愉悦特征相关。本研究旨在调查(1)丹麦消费者在食物愉悦的主要驱动因素方面的变化,和(2)食物愉悦的差异如何与特定的社会人口统计学相关,生活方式,健康和饮食行为人格特质。三百五十五名受访者(平均年龄33.3岁)评价了不同驱动因素对食物乐趣的重要性,以及社会人口统计学,生活方式,健康和饮食行为变量。分割分析是基于新兴的食物愉悦维度进行的,并通过多元回归分析和比值比计算进行节段分析.结果表明,可以定义五个特定的消费者群体,“感官愉悦寻求者”(50%),“内部快乐寻求者”(34%),“上下文-快乐探索者”(17%),“探索性快乐寻求者”(13%)和“确认性快乐寻求者”(5%),每个都有特定的特征。重要的是,这项研究表明,心理健康之间的联系,个性,饮食行为和感知的食物乐趣是显而易见的。这些见解有助于理解对适应公共卫生问题至关重要的食物选择的复杂性。
    A greater comprehension of factors contributing to pleasure from food-related experiences could increase understanding of underlying processes around different eating behaviours. We explored drivers of food pleasure and whether certain consumer characteristics were associated with specific food pleasure profiles. This study aimed to investigate (1) how Danish consumers vary in terms of primary drivers of food pleasure, and (2) how differences in food pleasure are related to specific sociodemographic, lifestyle, health and eating behavioural personality traits. Three-hundred and fifty-five respondents (mean age 33.3 years) rated the importance of different drivers of food pleasure, along with sociodemographic, lifestyle, health and eating behaviour variables. Segmentation analysis was performed based on emerging food pleasure dimensions, and profiling of segments was conducted by multivariate regression analysis and calculations of odds ratios. The results demonstrated that five specific consumer segments could be defined, \'Sensory-pleasure Seekers\' (50%), \'Internal-pleasure Seekers\' (34%), \'Contextual-pleasure Seekers\' (17%), \'Exploratory-pleasure seekers\' (13%) and \'Confirming-pleasure seekers\' (5%), each with specific characteristics. Importantly, this research indicates that a link between mental health, personality, eating behaviour and perceived food pleasure is evident. These insights contribute to the comprehension of the complex nature of food choices of importance to accommodating public health issues.
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  • 文章类型: Journal Article
    Compared to traditional experimental approaches, computational modeling is a promising strategy to efficiently prioritize new candidates with low cost. In this study, we developed a novel data mining and computational modeling workflow proven to be applicable by screening new analgesic opioids. To this end, a large opioid data set was used as the probe to automatically obtain bioassay data from the PubChem portal. There were 114 PubChem bioassays selected to build quantitative structure-activity relationship (QSAR) models based on the testing results across the probe compounds. The compounds tested in each bioassay were used to develop 12 models using the combination of three machine learning approaches and four types of chemical descriptors. The model performance was evaluated by the coefficient of determination (R 2) obtained from 5-fold cross-validation. In total, 49 models developed for 14 bioassays were selected based on the criteria and were identified to be mainly associated with binding affinities to different opioid receptors. The models for these 14 bioassays were further used to fill data gaps in the probe opioids data set and to predict general drug compounds in the DrugBank data set. This study provides a universal modeling strategy that can take advantage of large public data sets for computer-aided drug design (CADD).
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  • 文章类型: Journal Article
    核糖开关是一种通过改变结构来调节重要生物学功能的RNA分子,通常在配体结合下。我们评估了这些配体结合的结构替代物存在于玻尔兹曼样本中的程度,一种标准的RNA二级结构预测方法,三个核糖开关测试用例。我们使用聚类分析工具RNAStructProfiling来表征采样的次优结构之间存在的不同模态。我们将这些模式与使用NMR或荧光光谱法从独立实验获得的推定碱基配对模型进行比较。我们发现,有点出乎意料,分析玻尔兹曼样品捕获了所研究的三个核糖开关中的两个的配体结合构象的证据。此外,预测模式和实验模型之间的这种一致性与核糖开关分为热力学和动力学调节机制的分类是一致的。我们的结果支持通过RNAStructProfiling对玻尔兹曼样品进行聚类分析,作为从头鉴定热力学核糖开关的可能基础,同时强调了动能的挑战。
    A riboswitch is a type of RNA molecule that regulates important biological functions by changing structure, typically under ligand-binding. We assess the extent that these ligand-bound structural alternatives are present in the Boltzmann sample, a standard RNA secondary structure prediction method, for three riboswitch test cases. We use the cluster analysis tool RNAStructProfiling to characterize the different modalities present among the suboptimal structures sampled. We compare these modalities to the putative base pairing models obtained from independent experiments using NMR or fluorescence spectroscopy. We find, somewhat unexpectedly, that profiling the Boltzmann sample captures evidence of ligand-bound conformations for two of three riboswitches studied. Moreover, this agreement between predicted modalities and experimental models is consistent with the classification of riboswitches into thermodynamic versus kinetic regulatory mechanisms. Our results support cluster analysis of Boltzmann samples by RNAStructProfiling as a possible basis for de novo identification of thermodynamic riboswitches, while highlighting the challenges for kinetic ones.
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