Maternal-Fetal Exchange

母胎交换
  • 文章类型: Journal Article
    与未怀孕育龄妇女的感染相比,怀孕期间的严重急性呼吸道综合症冠状病毒2(SARS-CoV-2)感染与严重发病率和死亡率的风险更高。越来越多的国家建议对孕妇进行SARS-CoV-2免疫接种。最近的研究提供了安全性的初步和支持性证据,2019冠状病毒病(COVID-19)疫苗在孕妇中的免疫原性和有效性;然而,重要的知识差距仍然存在,需要进一步研究。这篇合作的共识论文回顾了目前关于孕妇使用COVID-19疫苗的文献,确定知识差距,并概述未来研究的重点,以优化孕妇及其婴儿对SARS-CoV-2的保护。
    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in pregnancy is associated with a higher risk for severe morbidity and mortality when compared with infection in non-pregnant women of childbearing age. An increasing number of countries recommend immunization against SARS-CoV-2 in pregnant women. Recent studies provide preliminary and supportive evidence on safety, immunogenicity and effectiveness of coronavirus disease 2019 (COVID-19) vaccines in pregnant women; however, important knowledge gaps remain which warrant further studies. This collaborative consensus paper provides a review of the current literature on COVID-19 vaccines in pregnant women, identifies knowledge gaps and outlines priorities for future research to optimize protection against SARS-CoV-2 in the pregnant women and their infants.
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  • 文章类型: Journal Article
    英国组织相容性和免疫遗传学学会(BSHI)指南“造血祖细胞移植的HLA匹配和供体选择”于2016年发表,由BSHI任命的写作委员会进行审查。进行了文献检索,并根据GRADE命名法将提取的数据作为建议。
    A review of the British Society for Histocompatibility and Immunogenetics (BSHI) Guideline \'HLA matching and donor selection for haematopoietic progenitor cell transplantation\' published in 2016 was undertaken by a BSHI appointed writing committee. Literature searches were performed and the data extracted were presented as recommendations according to the GRADE nomenclature.
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  • 文章类型: Journal Article
    BACKGROUND: Plaque psoriasis (PsO) is a chronic inflammatory disease that often presents at peak reproductive age in women of child-bearing potential (WOCBP). With the emergence of biologic therapies to treat PsO, guidance on disease management in WOCBP is needed to inform treatment decisions before, during, and after pregnancy.
    OBJECTIVE: To develop a practical, up-to-date consensus document, based on available evidence and expert opinion where evidence was lacking, in order to guide both Canadian and international clinicians treating PsO in WOCBP.
    METHODS: A panel of 9 Canadian dermatologists with extensive clinical experience managing PsO reviewed the relevant literature from the past 25 years in 3 key domains: overview of PsO in WOCBP and clinical considerations, treatment considerations, and postpartum considerations. The structured literature search focused on WOCBP treated with TNF-alpha inhibitors (adalimumab, certolizumab, etanercept, golimumab, infliximab), IL-23 inhibitors (guselkumab, risankizumab, tildrakizumab), IL-12/23 inhibitors (ustekinumab), and IL-17 inhibitors (brodalumab, ixekizumab, secukinumab). This literature review, along with clinical expertise and opinion, was used to develop concise and clinically relevant consensus statements to guide practical management of PsO in WOCBP. Experts voted on the statements using a modified Delphi process and prespecified agreement cut-off of 75%.
    CONCLUSIONS: After review, discussion, and voting on 19 draft consensus statements at an in-person meeting and remotely, 12 consensus statements were approved by the expert panel. The statements presented here will guide healthcare providers in practical disease management using biologic therapies for the treatment of PsO in WOCBP.
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  • 文章类型: Journal Article
    在南非的胎儿酒精谱系障碍(FASD)患病率研究中,确定的胎儿酒精综合征(FAS)病例与2016年Hoyme等人不同.修改后的医学研究所(IOM)标准。我们使用2005Hoyme等人的组合比较了诊断为FAS的儿童的诊断结果。标准和南非的“格式塔方法”对他们使用最新的Hoyme等人获得的诊断。标准。将所呈现的畸形特征的频率与在更大样本的修订标准中报告的频率进行比较。
    数据来自四项南非FASD患病率研究。形态学数据,人体测量数据,并提取参与者的最终诊断(N=917)。
    在诊断为“全FAS”的390名参与者中,“175将不会收到使用2016年标准的“完整FAS”诊断。其中,21人会接受pFAS诊断,154人将被诊断为ARND或“无FASD”诊断。该样本与2016年标准检查的样本之间,除五个变形特征外,所有特征的频率都存在显着差异。在当前样品中存在的特征中存在更多的可变性。
    关于诊断结果和畸形特征患病率的差异表明,严格应用诊断标准可能会遗漏出现FAS的儿童。我们建议在有临床经验的研究环境中包括基于完形的筛查,以指导未来的指南。
    During fetal alcohol spectrum disorder (FASD) prevalence studies in South Africa, cases of fetal alcohol syndrome (FAS) were identified that presented differently from the 2016 Hoyme et al. modified Institute of Medicine (IOM) criteria. We compared diagnostic outcomes of children diagnosed with FAS using a combination of the 2005 Hoyme et al. criteria and the \"gestalt method\" in South Africa to the diagnosis they would have received using the latest Hoyme et al. criteria. The frequency with which dysmorphic features presented was compared to the frequency with which they were reported in the revised criteria which drew on a larger sample.
    Data were gathered from four South African FASD prevalence studies. Dysmorphology data, anthropometric data, and final diagnosis for participants (N = 917) were extracted.
    Of the 390 participants with diagnoses of \"full FAS,\" 175 would not have received a \"full FAS\" diagnosis using the 2016 criteria. Of these, 21 would have received a pFAS diagnosis, and 154 would have received a diagnosis of ARND or a \"no-FASD\" diagnosis. The frequency of all but five dysmorphic features differ significantly between this sample and the sample examined for the 2016 criteria. There is more variability in the features present in the current sample.
    Differences regarding diagnostic outcomes and prevalence of dysmorphic features suggest that strict application of the diagnostic criteria may miss children who present with FAS. We recommend including gestalt-based screening in a research setting where the clinical experience is available to inform future guidelines.
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  • 文章类型: Journal Article
    监管指南的基础是识别与人类健康不利影响有关的化学品,并告知公共卫生风险评估人员此类环境暴露的“可接受范围”(例如,来自消费品和农药)。当考虑到复杂的人类暴露于多种环境化学物质时,该过程变得更加困难。在此,我们为人类数据提出了一类新的非线性统计模型,该模型使用所谓的“理想功能”(DF)将监管指南值纳入并评估了暴露于化学混合物的健康影响分析中。将DF合并到非线性回归模型中,以允许同时估计出发点,以对作为人体中检测到的化学混合物的一部分的单个物质的组合进行风险评估。这些是,与已发布的所谓的生物监测等效(BE)值和人类生物监测(HBM)值相反,这些值将单一化学物质的体内研究的监管指导值与人体内部监测的浓度联系起来。我们通过分析11种化学物质的产前浓度来说明该策略,这些化学物质具有怀疑的内分泌干扰特性和两种健康影响:出生体重和2.5年时的语言延迟。该策略允许创建混合期望度函数,即MDF,这是一组单一化学DF的一维结构;因此,它将所得的推论集中在单个维度上,以进行更强大的单自由度显著性检验。基于这种新方法的应用,我们得出结论,当组合观察化学品时,指导值需要低于单一化学品的指导值,以实现与针对单个化学品的目标相似的保护水平。因此,拟议的模型可能会为考虑环境混合物的单一化学品风险评估建议数据驱动的不确定性因素。
    Fundamental to regulatory guidelines is to identify chemicals that are implicated with adverse human health effects and inform public health risk assessors about \"acceptable ranges\" of such environmental exposures (e.g., from consumer products and pesticides). The process is made more difficult when accounting for complex human exposures to multiple environmental chemicals. Herein we propose a new class of nonlinear statistical models for human data that incorporate and evaluate regulatory guideline values into analyses of health effects of exposure to chemical mixtures using so-called \'desirability functions\' (DFs). The DFs are incorporated into nonlinear regression models to allow for the simultaneous estimation of points of departure for risk assessment of combinations of individual substances that are parts of chemical mixtures detected in humans. These are, in contrast to published so-called biomonitoring equivalent (BE) values and human biomonitoring (HBM) values that link regulatory guideline values from in vivo studies of single chemicals to internal concentrations monitored in humans. We illustrate the strategy through the analysis of prenatal concentrations of mixtures of 11 chemicals with suspected endocrine disrupting properties and two health effects: birth weight and language delay at 2.5 years. The strategy allows for the creation of a Mixture Desirability Function i.e., MDF, which is a uni-dimensional construct of the set of single chemical DFs; thus, it focuses the resulting inference to a single dimension for a more powerful one degree-of-freedom test of significance. Based on the application of this new method we conclude that the guideline values need to be lower than those for single chemicals when the chemicals are observed in combination to achieve a similar level of protection as was aimed for the individual chemicals. The proposed modeling may thus suggest data-driven uncertainty factors for single chemical risk assessment that takes environmental mixtures into account.
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  • 文章类型: Journal Article
    We specify and summarize significant data from recent large studies in a tool with which to aim at consensus on the question of whether and how serotonin-reuptake antidepressants should be used in pregnancy, on the basis that concern for the mental health of the mother should not vie for primacy with concern for the short-, medium-, and long-term health of the child, but must be best served together. Side effects are small but significant over the majority of 11 categories, perinatal and into adolescence. In clinical practice, alternatives for serotonin-reuptake medication in pregnancy should be more actively pursued.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
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  • 文章类型: Comparative Study
    Implementation of guidelines for group B streptococcal (GBS) prepartum screening (PS) rarely has been prospectively evaluated. To assess PS at 35-37 weeks of gestation and compare its predictive value to that of an intrapartum screening (IS) within 7 days of delivery, a surveillance cohort study was conducted at a tertiary care center in Freiburg, Germany, during 2011-2012. Study participants included 937 pregnant women who had intrapartum cultures taken for vaginal and rectal GBS colonization. Colonization status was compared to PS, and intrapartum antibiotic prophylaxis (IAP) rates calculated. The neonates were tested for GBS transmission via cultures from their throats and external ear canals. While 67.5% (633/937) of study participants had a PS, only 22.7% (144/633) underwent a fully guideline-compatible PS. However, maternal GBS colonization rates were similar when comparing PS (18.5% [117/633]) versus IS (17.0% [133/784]). The positive predictive value of a positive PS result for GBS positivity at delivery was 77.2 %. Women with a positive PS received IAP in 89.3% of cases (75/84). The capsular serotype distribution pattern of colonizing GBS strains has not changed in comparison to our 2003-2004 study--one with a similar study design.
    CONCLUSIONS: Improved strategies for adoption of prepartum GBS screening are needed.
    BACKGROUND: • The prediction of prepartum GBS screening for intrapartum colonization status has not been well studied. • Longitudinal studies of GBS screening are needed for screening program evaluations and vaccine development. What is New: • The rate of GBS screening has improved over 10 years, and intrapartum GBS colonization prediction was accurate. • Serotype distribution was stable and suggests the potential long-term efficacy of GBS vaccines.
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  • 文章类型: Case Reports
    Maternal psychiatric disorders commonly considered as moderate may have a devastating impact on the fetus and the newborn. Thus, treating or preventing relapse of these disorders during pregnancy is a clinical and ethical duty, despite the fact that the need for rapid maternal symptomatological improvement appears to be at odds with the necessity to avoid fetal drug exposure. Several guidelines and comprehensive reviews have been published to help clinicians faced with this difficult clinical decision. However, the uptake of these recommendations into clinical practice appears to have been less than complete, as suggested by the present case of a patient who was administered escitalopram throughout pregnancy. In this case, there was a healthy outcome for the child. However, this should not detract from the necessity to tackle the problem of inappropriate prescribing of psychotropic agents in pregnancy. Utilization of an integrated clinical approach, monitoring of drug levels throughout pregnancy and routine documentation of the health of the neonate are important measures that should be implemented and promoted to ensure optimal management of antenatal psychiatric disorders and minimize the effects of treatment on the newborn.
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