resilience

复原力
  • 文章类型: Journal Article
    背景:这项研究调查了海员的孤独感作为心理健康和复原力之间的中介变量,并测试韧性作为心理健康和孤独之间的中介变量。它还研究了海员在不同类型的船舶上面临的挑战,并评估了韧性和孤独感的中介作用。
    方法:本研究采用描述性数据分析,可靠性分析,相关分析,以及基于Bootstrap的回归模型的中介分析。使用社会人口统计学问卷和三个衡量心理健康(PW)的标准化量表,对471名活跃的土耳其海员进行了在线调查,工作中的孤独(法律),和心理弹性(PR)。数据收集于2023年01月07日和2023年01月09日之间。
    结果:研究结果表明,船舶类型是工作中孤独感和心理弹性的中介作用的重要因素。在不同类型的船舶中,工作中的孤独感和韧性在心理健康中具有部分中介作用。具体来说,工作中的孤独感部分调解了油轮或散货船上海员的心理韧性和心理健康之间的关系,但不是在集装箱船上。
    结论:该研究最后提出了应对海员面临的心理健康挑战的建议,强调船型在孤独和韧性的中介作用中的重要性。关于孤独在工作中的中介作用,已经确定,在油轮或散货船上工作的海员的心理韧性和心理健康之间存在部分调解。然而,在集装箱船上,工作中的孤独感并不能调节心理健康和心理韧性之间的关系。基于这些发现,作者最后通过提供一系列有用的解决方案来解决这个问题。
    BACKGROUND: This study investigates seafarers\' loneliness as a mediating variable between psychological well-being and resilience, and tests resilience as a mediating variable between psychological well-being and loneliness. It also examines the challenges faced by seafarers on different types of ships and evaluates the mediating roles of resilience and loneliness.
    METHODS: The research uses descriptive data analysis, reliability analysis, correlation analysis, and mediation analysis with bootstrap-based regression models. An online survey was conducted with 471 active Turkish seafarers using a sociodemographic questionnaire and three standardized scales measuring psychological well-being (PW), loneliness at work (LAW), and psychological resilience (PR). Data were collected between 01/07/2023 and 01/09/2023.
    RESULTS: The findings indicate that ship type is a significant factor in the mediating roles of loneliness at work and psychological resilience. There is a partial mediating role of loneliness at work and resilience in psychological well-being across different ship types. Specifically, loneliness at work partially mediates the relationship between psychological resilience and psychological well-being among seafarers on tanker or bulk carrier vessels, but not on container vessels.
    CONCLUSIONS: The study concludes with suggestions to address the mental health challenges faced by seafarers, emphasizing the importance of ship type in the mediating roles of loneliness and resilience. Regarding the mediating role of loneliness at work, it has been determined that there is partial mediation between psychological resilience and psychological well-being among seafarers working on tanker or bulk carrier vessels. However, on container vessels, loneliness at work does not mediate the relationship between psychological well-being and psychological resilience. Based on these findings, the authors conclude by offering a range of helpful solutions to address this problem.
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  • 文章类型: Journal Article
    COVID-19大流行的特点是孤独,尤其是青少年。本研究探讨了应对机制,活动,挑战,参观过的地方,以及预测青少年在COVID-19期间感觉与他人有联系的支持来源。数据来自2022年夏季在美国和加拿大进行的调查。多因素logistic回归表明,生产个人防护装备,支持兄弟姐妹,参与当地社区,在政治上变得更加活跃,参加语言课程与连通性呈正相关。此外,与美国的青少年相比,加拿大的青少年更有可能感到与他人有联系。这些发现可以为政策提供信息,以增强青少年在长期危机中的复原力。
    The COVID-19 pandemic was characterized by loneliness, especially among teenagers. This study explored the coping mechanisms, activities, challenges, places visited, and sources of support that predicted teenagers feeling connected to others during COVID-19. Data come from surveys administered in the United States and Canada in summer 2022. Multivariate logistic regression showed that producing personal protective equipment, supporting siblings, getting involved in the local community, becoming more politically active, and taking language classes were positively associated with connectedness. In addition, teens in Canada were more likely to feel connected to others than teens in the United States. These findings can inform policies to enhance resilience in teenagers during protracted crises.
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  • 文章类型: Journal Article
    人们普遍认为,COVID-19封锁期间日常活动表现的中断影响了健康,但是需要更好地了解特定活动的受限表现如何与健康相关。这项横断面研究回答了以下问题:在COVID-19封锁期间,16项日常活动的表现与健康相关的变化如何?共有116名参与者完成了一项在线调查,对他们在COVID-19封锁之前和期间的健康状况进行了评估,并将他们对COVID-19之前16项活动的表现与封锁期间的表现进行了比较。使用多元逐步线性回归分析来估计封锁期间自我报告的活动变化与同时(封锁期间)健康状况之间的关系。同时控制前COVID-19的健康状况。最终模型中只保留了与锁定健康状况唯一且显著相关的活动变化。COVID-19之前的健康状况占COVID-19封锁期间健康状况差异的3.7%(P=0.039)。在控制COVID-19之前的健康状况后,五种类型的活动对封锁期间的健康状况有显著和独特的预测作用,合计占差异的48.3%。这些活动和它们所占的差异是休息和睡眠(29.5%,P<0.001),游戏和娱乐活动(8%,P<0.001),工作(4.8%,P=0.002),个人卫生(3.2%,P=0.01),和健康饮食(2.8%,P=0.013)。研究表明,当活动的参与受到封锁或类似因素的限制时,应在政策或干预措施中优先考虑这五种类型的活动。
    The disruption in daily activity performance during COVID-19 lockdowns is widely understood to have impacted health, but a better understanding of how restricted performance of specific activities are associated with health is needed. This cross-sectional study answers the following question: How were changes in the performance of 16 daily activities associated with health during COVID-19 lockdowns? A total of 116 participants completed an online survey rating their health before and during COVID-19 lockdowns and comparing their recollection of the performance of 16 activities before COVID-19 with their performance during lockdowns. Multiple stepwise linear regression analysis was used to estimate the relationship between self-reported changes in activities during lockdowns and concurrent (during-lockdown) health status, while controlling for pre-COVID-19 health status. Only changes in activities that were uniquely and significantly associated with lockdown health status were retained in the final model. Health before COVID-19 accounted for 3.7% (P = 0.039) of the variance in health during COVID-19 lockdowns. After controlling for health before COVID-19, five types of activity were significantly and uniquely predictive of health during lockdowns, together accounting for 48.3% of the variance. These activities and the variances they accounted for were rest and sleep (29.5%, P < 0.001), play and recreational activities (8%, P < 0.001), work (4.8%, P = 0.002), personal hygiene (3.2%, P = 0.01), and healthy eating (2.8%, P = 0.013). The study suggests that these five types of activity should be prioritized in policy or interventions when participation in activity is constrained by lockdowns or comparable factors.
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  • 文章类型: Journal Article
    产后疲劳(PPF)会损害妇女的身心健康。这项研究的目的是评估疲劳和产妇健康相关变量之间的关联。具体来说,睡眠质量,抑郁症状,和韧性,并探讨韧性在睡眠质量关系中的调节作用,抑郁症状,和疲劳。
    这项横断面研究使用了通过在线平台从产后母亲那里收集的数据。PPF使用疲劳严重程度量表进行评估,而睡眠质量和抑郁症状使用匹兹堡睡眠质量指数和爱丁堡产后抑郁量表进行评估,分别。使用简短弹性量表评估弹性。进行了简单和多元二元逻辑回归分析,以检查每个自变量与PPF的关联,并确定PFF的最重要预测因子。使用SPSS对数据进行分析,并使用AMOS23进行结构方程建模。使用Hayes过程宏进行了适度分析,以探讨韧性的调节作用。
    共有1,443名产后母亲被纳入分析。简单二元logistic回归分析显示,患有慢性病(赔率:1.52;p=0.02),母亲的年龄(赔率:0.97;p=0.03),母亲的体重指数(BMI;赔率:1.03;p=0.01),抑郁症状(赔率:1.09;p≤0.0001),睡眠质量(赔率:1.17;p≤0.0001),和弹性(赔率:0.42;p≤0.0001)均导致产后疲劳。多因素logistic回归显示,母亲的BMI,睡眠质量,抑郁症状,和弹性是PPF的重要预测因子。适度分析表明,心理弹性在睡眠质量和疲劳的主要影响之间(交互作用:β=0.01,p=0.31,95%CI:-0.01至0.04)或在抑郁症状和产后疲劳的主要影响之间(交互作用:β=0.01,p=0.82,95%CI:-0.01至0.02)没有显着调节作用。
    鉴于PPF对产妇健康结局的有害影响,与PPF相关的因素应定期评估。除了母亲的BMI,睡眠质量,和抑郁症状,弹性也可能是预测母亲在这一关键时期疲劳严重程度的一个关键因素,尽管它不是该样本中的重要调节因素。
    UNASSIGNED: Postpartum fatigue (PPF) can impair the physical and mental well-being of women. The aims of this study were to assess the associations between fatigue and maternal health-related variables, specifically, sleep quality, depression symptoms, and resilience, and to explore the moderating role of resilience in the relationships between sleep quality, depression symptoms, and fatigue.
    UNASSIGNED: This cross-sectional study used data collected from mothers during the postpartum period via an online platform. PPF was assessed using the Fatigue Severity Scale, whereas sleep quality and depression symptoms were assessed using the Pittsburgh Sleep Quality Index and Edinburgh Postnatal Depression Scale, respectively. The Brief Resilience Scale was used to assess resilience. Simple and multiple binary logistic regression analyses were performed to examine the association of each independent variable with PPF and to determine the most significant predictors of PFF. The data were analyzed using SPSS, and structural equation modeling was performed using AMOS 23. A moderation analysis was performed to explore the moderating role of resilience using the Hayes PROCESS macro.
    UNASSIGNED: A total of 1,443 postpartum mothers were included in the analysis. The simple binary logistic regression analysis showed that having chronic disease (odds: 1.52; p = 0.02), mother\'s age (odds: 0.97; p = 0.03), mother\'s body mass index (BMI; odds: 1.03; p = 0.01), depression symptoms (odds: 1.09; p ≤ 0.0001), sleep quality (odds: 1.17; p ≤ 0.0001), and resilience (odds: 0.42; p ≤ 0.0001) all contributed to fatigue during postpartum. Multivariate logistic regression showed that the mother\'s BMI, sleep quality, depression symptoms, and resilience were significant predictors of PPF. Moderation analyses showed that resilience was not a significant moderator between the main effects of sleep quality and fatigue (interaction effect: β = 0.01, p = 0.31, 95% CI: -0.01 to 0.04) or between the main effects of depression symptoms and fatigue during postpartum (interaction effect: β = 0.01, p = 0.82, 95% CI: -0.01 to 0.02).
    UNASSIGNED: Given the deleterious effects of PPF on maternal health outcomes, factors associated with PPF should be assessed regularly. In addition to mothers\' BMI, sleep quality, and depression symptoms, resilience could also be a crucial factor in predicting fatigue severity during this critical time for mothers even though it was not a significant moderator among this sample.
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  • 文章类型: Journal Article
    在荷兰,每两个人中就有一个在他们生命中的某个时候会被诊断为癌症。面对越来越多的病人,幸运的是,很大一部分可以治愈。今天,相当高比例的人接受治疗以控制癌症生长或稳定疾病,有时,他们的余生。如果这种长期治疗超过10-20年,癌症的阶段目前通常不再被称为“姑息性”,但更常见的是“慢性”。“可以说,无论您处于癌症疾病阶段,是否可以治愈,然而,你的癌症诊断已经成为你生活的一部分,包括长期的经验。围绕癌症慢性的讨论仍在进行中。尤其是这种情况,因为“经历慢性”取决于癌症的类型,并且在预后通常小于一年的癌症中不太适用。例如更常见的是肺癌或胰腺癌。在所有情况下,然而,经历慢性病会带来不确定性,有或没有慢性压力。通过选择正确的措辞来对抗压力,在身体活动和/或心理社会教育的同时,保持乐观的立场对于优化健康,稳定肿瘤生长或切除肿瘤似乎很重要。总之,在治疗和护理癌症的背景下,慢性似乎是一个有点灰色的区域。然而,不管我们如何,作为医疗专业人士,谈论具有长期疾病轨迹的癌症(有时甚至可以治愈),首先,接近似乎很重要,保重,好好对待病人。这可以促进与患者讨论他们的疾病和疾病经历。此外,它可以刺激患者自己对自己的健康负责,这对整个疾病轨迹具有附加价值。
    In the Netherlands, one out of two people will be confronted with the diagnosis of cancer sometime in their life. Against this increased number of patients, a large proportion luckily can be cured. Today, a rather high proportion of people receive treatment to control cancer growth or stabilize the disease, sometimes, for the rest of their lives. If such long-standing treatment is administered for more than 10-20 years, the stage of cancer is presently often not referred to as \"palliative\" anymore, but much more often as \"chronic.\" It could be argued that regardless of the cancer disease stage you are in and whether you are or can be cured, your cancer diagnosis nevertheless has become part of your life, including the experience of chronicity. Discussions surrounding the chronicity of cancer in the context of cancer are still ongoing. This is especially the case because \"experiencing chronicity\" is dependent on the type of cancer and is less applicable in cancers where the prognosis is often less than one year, such as is more frequently the case with lung or pancreatic cancer. In all situations, experiencing chronicity nevertheless brings along uncertainty, either with or without chronic stress. Combatting stress by choosing the right wording, maintaining an optimistic stance along with physical activity and/or psychosocial education seems important to optimize well-being and to stabilize tumor growth or remove the tumor. In conclusion, chronicity in the context of treating and caring for cancer seems a somewhat gray area. However, regardless in how we, as medical professionals, speak about cancer with long-standing disease trajectories (that sometimes even can be cured), it first of all seems important to approach, take care, and treat patients well. This can facilitate discussions with patients about their disease and disease experiences. Moreover, it can stimulate patients themselves to take responsibility for their own health, which can be of added value to the entire disease trajectory.
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  • 文章类型: Journal Article
    背景:牙周病与口腔微生物群落的生态失调有关。因此,管理口腔生物膜是预防这些疾病的关键。管理方案通常包括非处方抗菌漱口液,缺乏关于它们对口腔微生物组生态影响的数据,细菌组成,代谢活动,和生态失调的复原力。这项研究研究了在模拟牙周炎的条件下,抗菌漱口液在体外口腔生物膜中阻止菌群失调的功效。
    方法:在羟基磷灰石圆盘(HADs)上生长多种口腔生物膜,每天用六种漱口液中的一种冲洗。包括阳性和阴性对照。冲洗三次后,用活性定量聚合酶链反应分析生物膜,并使用扫描电子显微镜观察。冲洗的生物膜的上清液用于代谢活性分析。此外,将人口腔角质形成细胞暴露于冲洗后的生物膜中以评估其炎症反应。使用Spearman系数分析所有输出的相关性。
    结果:在冲洗的生物膜中观察到产品相关的变化。六种测试的漱口水中的三种可以显着预防菌群失调,与对照组相比,病原体丰度降低≥30%。这些生物膜具有较低的代谢活性,暴露的人类口腔角质形成细胞产生的白细胞介素8较少。白细胞介素-8的产生与生物膜的病理生物学数量和代谢活性相关。
    结论:在生物膜模型中,一些漱口液可以支持生物膜复原力并阻止生态失调的进化,具有明显的产品相关效果。对于在维持/支持性牙周治疗下的患者,可以考虑这样的漱口水以预防/延迟疾病复发。其他对于不同的牙周治疗阶段更有用。
    BACKGROUND: Periodontal diseases are associated with dysbiosis in the oral microbial communities. Managing oral biofilms is therefore key for preventing these diseases. Management protocols often include over-the-counter antimicrobial mouth rinses, which lack data on their effects on the oral microbiome\'s ecology, bacterial composition, metabolic activity, and dysbiosis resilience. This study examined the efficacy of antimicrobial mouth rinses to halt dysbiosis in in vitro oral biofilms under periodontitis-simulating conditions.
    METHODS: Multispecies oral biofilms were grown on hydroxyapatite discs (HADs) and rinsed daily with one of six mouth rinses. Positive and negative controls were included. After three rinses, biofilms were analyzed with viability quantitative polymerase chain reaction and visualized using scanning electron microscopy. Supernatants of rinsed biofilms were used for metabolic activity analysis. In addition, human oral keratinocytes were exposed to rinsed biofilms to assess their inflammatory response. All outputs were analyzed for correlation using Spearman coefficient.
    RESULTS: Product-related changes were observed in the rinsed biofilms. Three of the six tested mouth rinses could significantly prevent dysbiosis with ≥30% reduction in pathobiont abundance relative to the control. These biofilms had lower metabolic activity, and the exposed human oral keratinocyte produced less interleukin-8. Interleukin-8 production correlated to both pathobiont quantity and the metabolic activity of the biofilms.
    CONCLUSIONS: Some mouth rinses could support biofilm resilience and stop dysbiosis evolution in the biofilm model, with a clear product-related effect. Such mouth rinses can be considered for patients under maintenance/supportive periodontal therapy to prevent/delay disease recurrence. Others are more useful for different periodontal therapy stages.
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  • 文章类型: Journal Article
    目标:尽管糖尿病技术取得了进展,许多患有1型糖尿病(T1D)的青少年无法达到目标代谢控制.弹性与糖尿病护理中更好的结果相关。这篇综述的目的是综合对T1D青少年弹性的研究,特别是如何探索韧性的概念。
    方法:本综合综述是根据Whittemore和Knafl的框架进行的。在CINAHL进行了系统的搜索,PubMed/Medline和PsycInfo数据库。合格标准包括对T1D青少年韧性的研究,13至18岁,在同行评审的科学期刊上以英文发表。使用混合方法评估工具评估研究质量。
    结果:该综述包括24项研究。弹性被定义为能力或能力,或过程,保持身体和心理健康,尽管暴露于重大压力源或痛苦事件。糖尿病恢复力被定义为尽管生活在T1D中面临挑战,但仍能实现积极的社会心理和健康结果。研究是定量的(n=21),定性(n=1)和混合方法(n=2)。发现了六种弹性工具。DSTAR-Teen是T1D青少年使用最多的唯一工具。
    结论:这篇综述强调了对韧性概念的明确定义的必要性,因为以前的研究使用了不同的定义或缺乏定义。在未来,有必要对T1D青少年的韧性进行更精确的概念分析.
    结论:DSTAR-Teen是一种有前途的弹性测量指标,具有良好的心理测量特性,可用于T1D青少年的进一步研究。
    OBJECTIVE: Despite advances in diabetes technology, many adolescents with type 1 diabetes (T1D) cannot achieve target metabolic control. Resilience is associated with better outcomes in diabetes care. The aim of this review is to synthesize studies on resilience in adolescents with T1D, particularly how the concept of resilience has been explored.
    METHODS: This integrative review was carried out according to Whittemore and Knafl\'s framework. A systematic search was conducted in the CINAHL, PubMed/Medline and PsycInfo databases. Eligibility criteria included studies on resilience in adolescents with T1D, aged 13 to 18 years, that were published in English in peer-reviewed scientific journals. The Mixed Methods Appraisal Tool was used to assess study quality.
    RESULTS: The review included twenty-four studies. Resilience was defined as the ability or capacity, or the process, to maintain physical and psychological well-being despite exposure to significant stressors or distress events. Diabetes resilience was defined as achieving positive psychosocial and health outcomes despite the challenges of living with T1D. Studies were quantitative (n = 21), qualitative (n = 1) and mixed methods (n = 2). Six resilience instruments were found. The DSTAR-Teen was the most used and the only instrument for adolescents with T1D.
    CONCLUSIONS: This review highlighted the need for an explicit definition of the concept of resilience because previous studies used different definitions or lacked a definition. In the future, a more precise concept analysis of resilience in adolescents with T1D is warranted.
    CONCLUSIONS: The DSTAR-Teen is a promising resilience measure with good psychometric properties for further studies in adolescents with T1D.
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  • 文章类型: Journal Article
    受Giommoni对坎宁安前体控制奖学金的评估的启发,我们提出了两个概念,以帮助药物政策学者思考当市场参与者面临前体可用性变化时运作的机制。一是限制性威慑的概念,强调风险缓解策略,如调查频率的变化,方法,不同类型干预后可能出现的市场。虽然限制性威慑是对当前通过适应思考的方法的改进,它在对个人的狭隘关注方面不足,而不是组织或市场作为一个集体。然后,弹性的概念被提出作为替代方案,允许学者详细阐述具体的假设,并根据组织和市场的预测能力来评估,cope,适应并最终从中断中恢复。最后,我们阅读了坎宁安和同事们的前体对照论文,并考虑了韧性框架,表明许多元素已经存在于他们的工作中。
    Inspired by Giommoni\'s assessment of the Cunningham precursor control scholarship, we propose two concepts to help drug policy scholars think through the mechanisms that operate when market participants are faced with a change in precursor availability. The first is the concept of restrictive deterrence, that emphasizes risks mitigation strategies such as looking into changes in the frequency, methods, markets that may occur after different types of interventions. While restrictive deterrence is an improvement over current approaches in thinking through adaptations, it falls short in its narrower focus on the individual, rather than organizations or the market as a collective. The concept of resilience is then proposed as alternative that allows scholars to elaborate specific hypotheses and assess both organizations and markets based on their capacity to anticipate, cope, adapt and ultimately recover from disruptions. We finish by providing a reading of the Cunningham and colleagues precursor control papers with the resilience framework in mind, showing that many of the elements were already present in their work.
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  • 文章类型: Journal Article
    背景:COVID-19大流行在居民中产生了情境影响,并引起了各种心理反应。本研究旨在分析大流行心理反应的网络结构及其与情境影响的关系。弹性,和幸福通过网络的方法。
    方法:一项在线调查招募了1122名居民(平均年龄=32.5岁,65.4%女性)在2020年10月至2021年10月期间在香港。参与者完成了心理影响和困扰量表:心理反应(MIDc-PR)和其他经过验证的措施。在R中进行高斯图形建模,以确定中心MIDc-PR症状及其与情境影响的桥梁联系,弹性,和幸福。
    结果:在MIDc-PR网络中,中心症状是“常规”和“图像”,用于预期,“紧张”和“孤独”,用于调节,在两个集群之间有12个桥边。在组合网络中,MIDc-PR节点显示12个具有情境影响的桥边,特别是在健康领域。\'关注\',\'睡眠\',“孤独”和“孤独”显示出与韧性的负相关;“无动机”和“被困”显示出与幸福感的负相关。网络模型显示出良好的稳定性,并且在性别和年龄组之间在网络结构和全球强度方面没有显着差异。
    结论:横断面研究设计仅允许网络中的无方向关联,无法对受试者内部效应进行建模。
    结论:研究结果通过阐明对流行病的心理反应的网络结构,为文献做出了贡献。中心和桥症状具有临床意义,可作为未来干预的潜在目标。
    BACKGROUND: The COVID-19 pandemic has had situational impacts and induced various psychological responses among residents. The present study aims to analyze the network structure of psychological responses to the pandemic and their relationships with situational impact, resilience, and well-being through a network approach.
    METHODS: An online survey recruited 1122 residents (mean age = 32.5 years, 65.4 % female) in Hong Kong from October 2020 to October 2021. The participants completed the Mental Impact and Distress Scale: Psychological Response (MIDc-PR) and other validated measures. Gaussian graphical modeling was conducted in R to identify the central MIDc-PR symptoms and their bridge linkages with situational impact, resilience, and well-being.
    RESULTS: In the MIDc-PR network, the central symptoms were \'Routine\' and \'Images\' for Anticipation and \'Tense\' and \'Lonely\' for Modulation, with 12 bridge edges between the two clusters. In the combined network, the MIDc-PR nodes showed 12 bridge edges with situational impact, particularly in the health domain. \'Concerned\', \'Sleep\', and \'Lonely\' showed negative linkages with resilience; \'Unmotivated\' and \'Trapped\' showed negative linkages with well-being. The network models showed good levels of stability and did not differ significantly in network structure and global strength across gender and age groups.
    CONCLUSIONS: The cross-sectional study design only allowed undirected associations in the network and could not model the within-subject effects.
    CONCLUSIONS: The study findings contributed to the literature by elucidating the network structure of psychological responses to the pandemic. The central and bridge symptoms have clinical implications as potential targets for future interventions.
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  • 文章类型: Journal Article
    能够有效应对压力的繁殖动物可能是一个长期的,可持续,和负担得起的战略,以提高牲畜系统的弹性和福利。在本研究中,29个血浆生物标志物的浓度被用作单SNP代谢应激反应的候选内表型,基于基因和单倍型的GWAS使用739头健康泌乳的意大利荷斯坦奶牛和88,271种变体。在BTA17上的血浆γ-谷氨酰转移酶浓度,BTA4上的对氧磷酶以及BTA2上的碱性磷酸酶和锌的所有3种GWAS方法中均发现了显着的遗传关联。在这些染色体上,进行了单SNP和基于基因的全染色体关联研究,确认GWAS的发现。对氧磷酶的信号鉴定,γ-谷氨酰转移酶,和碱性磷酸酶在编码它们的基因附近。这4种生物标志物的遗传力范围从中等到高(从0.39到0.54)。已知血浆生物标志物在过渡期的代谢应激期间经历大的浓度变化,在变化率和恢复时间方面存在个体差异。遗传学可以部分解释这些差异。为了评估这一点,我们研究了139只在3个SNP纯合的围产期母牛的子集,已知分别与血浆铜蓝蛋白浓度相关,对氧磷酶和γ-谷氨酰转移酶。我们比较了相对于相反纯合子组之间的产卵在-7、5和30d时在血浆中测量的免疫代谢谱。在所有3个时间点,基因型对对对氧磷酶和γ-谷氨酰转移酶血浆浓度均有显着影响。未检测到铜蓝蛋白的基因型效应的证据。了解代谢应激反应的遗传控制可能会提出新的方法来培养奶牛的韧性。
    Breeding animals able to effectively respond to stress could be a long-term, sustainable, and affordable strategy to improve resilience and welfare in livestock systems. In the present study, the concentrations of 29 plasma biomarkers were used as candidate endophenotypes for metabolic stress response in single-SNP, gene- and haplotype-based GWAS using 739 healthy lactating Italian Holstein cows and 88,271 variants. Significant genetic associations were found in all the 3 GWAS approaches for plasma γ-glutamyl transferase concentration on BTA17, for paraoxonase on BTA4, and for alkaline phosphatase and zinc on BTA2. On these chromosomes, single-SNP and gene-based chromosome-wide association studies were performed, confirming GWAS findings. The signals identified for paraoxonase, γ-glutamyl transferase, and alkaline phosphatase were in proximity of the genes coding for them. The heritability of these 4 biomarkers ranged from moderate to high (from 0.39 to 0.54). Plasma biomarkers are known to undergo large changes in concentration during metabolic stress in the transition period, with an inter-individual variability in the rate of change and recovery time. Genetics may account in part for these differences. To assess this, we studied a subset of 139 periparturient cows homozygous at 3 SNPs known to be respectively associated with concentration of plasma ceruloplasmin, paraoxonase and γ-glutamyl transferase. We compared the immune-metabolic profile measured in plasma at -7, +5 and +30 d relative to calving between groups of opposite homozygotes. A significant effect of the genotype was found on paraoxonase and γ-glutamyl transferase plasma concentration at all the 3 time points. No evidence for genotype effect was detected for ceruloplasmin. Understanding the genetic control underlying metabolic stress response may suggest new approaches to foster resilience in dairy cows.
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