uptake

吸收量
  • 文章类型: Journal Article
    肺癌筛查(LCS)有可能将肺癌死亡率降低20%。然而,自从LCS被确立为基于证据的实践以来,在美国,<20%的合格人群已经过筛查。这篇综述的重点是批判性地评估旨在增加LCS初始摄取的干预措施,包括他们如何解决LCS的已知障碍以及他们克服这些障碍的有效性。
    结果:根据研究解决的主要障碍对研究进行分类:1)确定合格患者(包括通过收集吸烟史来提高意识,外展,和教育),2)与SDM相关的干预措施,和3)患者导航干预。其中四项研究包括多成分干预措施,其中通常包括患者导航作为组件之一。总的来说,在改善LCS摄取方面所回顾的研究的有效性总体上是适度的,并且受到需要克服的多层次障碍的限制.多组分干预通常在改善LCS摄取方面更有效,但大多数研究的筛查完成度仍然相对较低。
    结论:提高LCS的吸收需要从先前的干预措施中学习,设计多层次的干预措施,在关键步骤解决LCS的障碍,并确定这些干预措施的哪些组成部分是有效和可推广的。
    UNASSIGNED: Lung cancer screening (LCS) has the potential to decrease mortality from lung cancer by 20%. Yet, more than a decade since LCS was established as an evidence-based practice, < 20% of the eligible population in the United States has been screened. This review focuses on critically appraising interventions that have been designed to increase the initial uptake of LCS, including how they address known barriers to LCS and their effectiveness in overcoming these barriers.
    RESULTS: Studies were categorized based on the primary barriers that they addressed: (1) identifying eligible patients (including enhancing awareness through smoking history collection, outreach, and education), (2) shared decision-making-related interventions, and (3) patient navigation interventions. Four of the studies included multicomponent interventions, which often included patient navigation as one of the components. Overall, the effectiveness of the studies reviewed at improving LCS uptake generally was modest and was limited by the multilevel barriers that need to be overcome. Multicomponent interventions generally were more effective at improving LCS uptake, but most studies still had relatively low completion of screening.
    CONCLUSIONS: Improving uptake of LCS requires learning from prior interventions to design multilevel interventions that address barriers to LCS at key steps and identifying which components of these interventions are effective and generalizable.
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  • 文章类型: Journal Article
    2019年冠状病毒病(COVID-19)的全球出现带来了前所未有的挑战,危及医疗系统几十年的进步,教育,和消除贫困。虽然洗手和大规模疫苗接种等行之有效的干预措施提供了遏制COVID-19传播的有效手段,它们的吸收仍然很低,可能会破坏未来的大流行控制工作。本系统综述综合了肯尼亚影响疫苗摄取和洗手习惯的现有证据,乌干达,和坦桑尼亚在COVID-19预防和控制方面。我们在PubMed进行了广泛的文献检索,科学直接,和GoogleScholar数据库遵循系统审查和荟萃分析(PRISMA)指南的首选报告项目。在391篇评论文章中,18人符合入选条件。在肯尼亚洗手的一些常见障碍,乌干达,坦桑尼亚包括对政府关于手部卫生和缺乏水的好处的建议或信息缺乏信任,虽然疫苗接种的一些障碍包括疫苗安全性和有效性问题以及对疫苗接种地点和疫苗类型的认识不足。洗手习惯的支持者包括手部卫生计划和肥皂和水的获取,而COVID-19疫苗的吸收包括改善对疫苗知识的获取,社会经济因素,比如更高水平的教育。这篇综述强调了解决这些障碍的关键作用,同时利用推动者促进疫苗接种和洗手实践。利益相关者应开展提高认识运动和社区参与,确保疫苗和卫生资源的可及性,并利用社会经济激励措施进行有效的COVID-19预防和控制。临床试验注册:[https://clinicaltrials.gov/],标识符[CRD42023396303]。
    The global emergence of coronavirus disease 2019 (COVID-19) posed unprecedented challenges, jeopardizing decades of progress in healthcare systems, education, and poverty eradication. While proven interventions such as handwashing and mass vaccination offer effective means of curbing COVID-19 spread, their uptake remains low, potentially undermining future pandemic control efforts. This systematic review synthesized available evidence of the factors influencing vaccine uptake and handwashing practices in Kenya, Uganda, and Tanzania in the context of COVID-19 prevention and control. We conducted an extensive literature search across PubMed, Science Direct, and Google Scholar databases following Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. Out of 391 reviewed articles, 18 were eligible for inclusion. Some of the common barriers to handwashing in Kenya, Uganda, and Tanzania included lack of trust in the government\'s recommendations or messaging on the benefits of hand hygiene and lack of access to water, while some of the barriers to vaccine uptake included vaccine safety and efficacy concerns and inadequate awareness of vaccination sites and vaccine types. Enablers of handwashing practices encompassed hand hygiene programs and access to soap and water while those of COVID-19 vaccine uptake included improved access to vaccine knowledge and, socio-economic factors like a higher level of education. This review underscores the pivotal role of addressing these barriers while capitalizing on enablers to promote vaccination and handwashing practices. Stakeholders should employ awareness campaigns and community engagement, ensure vaccine and hygiene resources\' accessibility, and leverage socio-economic incentives for effective COVID-19 prevention and control. Clinical trial registration: [https://clinicaltrials.gov/], identifier [CRD42023396303].
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  • 文章类型: Journal Article
    邻苯二甲酸酯(PAEs)在各种应用中的使用日益增加,不可避免地导致其在水生环境中的广泛存在。这对植物构成了相当大的威胁。然而,水环境中PAEs与植物之间的相互作用尚未得到全面综述。在这次审查中,属性,发生,摄取,改造,总结了PAEs对水生环境中植物的毒性作用。在水生环境中普遍检测到PAEs,包括地表水,地下水海水,和沉积物,浓度范围从ng/L或ng/kg到mg/L或mg/kg。水生环境中的PAEs可以被吸收,易位,并被植物代谢。暴露于PAEs会在水生植物中引起多种不利影响,包括生长扰动,结构损伤,光合作用的中断,氧化损伤,和潜在的遗传毒性。高通量组学技术进一步揭示了PAEs如何破坏植物转录的潜在毒性分子机制,蛋白质,和新陈代谢水平。最后,这篇综述提出,未来的研究应评估植物与PAEs之间的相互作用,重点是长期暴露于环境中的PAE浓度。PAE替代品的影响,和人类健康风险通过摄入植物性食品。
    The increasing use of phthalate acid esters (PAEs) in various applications has inevitably led to their widespread presence in the aquatic environment. This presents a considerable threat to plants. However, the interactions between PAEs and plants in the aquatic environment have not yet been comprehensively reviewed. In this review, the properties, occurrence, uptake, transformation, and toxic effects of PAEs on plants in the aquatic environment are summarized. PAEs have been prevalently detected in the aquatic environment, including surface water, groundwater, seawater, and sediment, with concentrations ranging from the ng/L or ng/kg to the mg/L or mg/kg range. PAEs in the aquatic environment can be uptake, translocated, and metabolized by plants. Exposure to PAEs induces multiple adverse effects in aquatic plants, including growth perturbation, structural damage, disruption of photosynthesis, oxidative damage, and potential genotoxicity. High-throughput omics techniques further reveal the underlying toxicity molecular mechanisms of how PAEs disrupt plants on the transcription, protein, and metabolism levels. Finally, this review proposes that future studies should evaluate the interactions between plants and PAEs with a focus on long-term exposure to environmental PAE concentrations, the effects of PAE alternatives, and human health risks via the intake of plant-based foods.
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  • 文章类型: Journal Article
    纳米运载工具(NDV)是工程纳米材料(ENM),在农业部门,已经研究了它们改善农用化学品吸收和转运的能力,控制释放,或靶向特定组织或亚细胞区室。在文献中已经研究了无机和有机NDV用于农用化学品递送,但是对后者的研究比对前者的文献发展缓慢。由于这两类纳米材料在表面化学上表现出显著的差异,物理变形能力,甚至胶体稳定性,适用于无机NDV的趋势可能不适用于有机NDV,反之亦然。我们在这里回顾当前关于吸收的文献,易位,生物转化,以及叶面或根施用后植物中有机NDV的细胞和亚细胞内化。纳米材料和植物生理学的背景为该领域的研究人员提供了一个平整的基础。作为NDV性质的函数,研究了吸收和易位的趋势,并将其与无机纳米材料的报道进行了比较。讨论了评估植物中有机NDV的命运和运输的方法(该领域的主要瓶颈)。最后,我们确定了文献中必须理解的知识空白,以便合理设计用于精确农用化学纳米输送的有机NDV。
    Nanodelivery vehicles (NDVs) are engineered nanomaterials (ENMs) that, within the agricultural sector, have been investigated for their ability to improve uptake and translocation of agrochemicals, control release, or target specific tissues or subcellular compartments. Both inorganic and organic NDVs have been studied for agrochemical delivery in the literature, but research on the latter has been slower to develop than the literature on the former. Since the two classes of nanomaterials exhibit significant differences in surface chemistry, physical deformability, and even colloidal stability, trends that apply to inorganic NDVs may not hold for organic NDVs, and vice versa. We here review the current literature on the uptake, translocation, biotransformation, and cellular and subcellular internalization of organic NDVs in plants following foliar or root administration. A background on nanomaterials and plant physiology is provided as a leveling ground for researchers in the field. Trends in uptake and translocation are examined as a function of NDV properties and compared to those reported for inorganic nanomaterials. Methods for assessing fate and transport of organic NDVs in plants (a major bottleneck in the field) are discussed. We end by identifying knowledge gaps in the literature that must be understood in order to rationally design organic NDVs for precision agrochemical nanodelivery.
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  • 文章类型: Meta-Analysis
    尽管正在进行旨在预防人乳头瘤病毒(HPV)相关健康问题的全球疫苗接种运动,在发展中地区,HPV疫苗的摄入量仍然低得令人无法接受,特别是在撒哈拉以南非洲(SSA)。因此,本系统综述和荟萃分析旨在确定SSA中青少年女生HPV疫苗摄取的汇总患病率和相关因素.探索了电子生物医学数据库。汇总患病率,出版偏见,元回归,分组,并进行敏感性分析。HPV疫苗摄取的估计汇总患病率为28.53%[95%CI:(5.25,51.81)]。具有良好的知识和积极的态度与SSA中HPV疫苗的摄取显着相关。亚组分析显示,肯尼亚的最高摄取量为62.52%,尼日利亚的最低摄取量为3.77%。HPV疫苗摄取低。它强调了社区教育的必要性,学校免疫接种,以及促进疫苗接种以增加覆盖率的教育计划。
    Despite the ongoing global vaccination campaign aimed at preventing human papillomavirus (HPV) related health issues, the uptake of the HPV vaccine remains unacceptably low in developing regions, particularly in sub-Saharan Africa (SSA). Therefore, this systematic review and meta-analysis aimed at determining the pooled prevalence and associated factors of HPV vaccine uptake among adolescent school girls in SSA. Electronic bio-medical databases were explored. Pooled prevalence, publication bias, meta-regression, sub-group, and sensitivity analysis were performed. The estimated pooled prevalence of HPV vaccine uptake was 28.53% [95% CI: (5.25, 51.81)]. Having good knowledge and a positive attitude was significantly associated with HPV vaccine uptake in SSA. Subgroup analysis revealed the highest uptake was 62.52% from Kenya and the lowest was 3.77% in Nigeria. The HPV vaccine uptake is low. It underscores the need for community education, school-based immunization, and education programs that promote the uptake of the vaccine to increase coverage.
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  • 文章类型: Journal Article
    在研究中越来越多地使用基因组测序意味着次要发现(SF)被更频繁地检测到,并成为研究人员更紧迫的问题。这反映在最近就这一问题发表的多项准则上,呼吁研究人员在开始研究之前制定管理SF的计划。需要对参与者接受SF的经验和结果有更深入的了解,以确保SF的返回符合道德并得到足够的支持。这篇综述的重点是研究参与者接受可操作的SF的吸收和结果。本综述包括2010年1月至2023年1月的研究。搜索的数据库包括Medline,Embase,PsycINFO,还有Scopus.在确定的3903项研究中,29个被包括在分析中。SF的摄取范围在20%到97%之间,结果被归类为心理,临床,生活方式和行为,和家庭结果。结果表明,接受SF对心理的影响很小。几乎所有参与者都非常重视接受SF。这些发现突出了研究人员在返回结果时的考虑因素,包括让遗传健康专业人员参与同意的重要性,结果返回过程,并通过聘请医疗保健提供者来确保护理的连续性。
    The increasing use of genomic sequencing in research means secondary findings (SF) is more frequently detected and becoming a more pressing issue for researchers. This is reflected by the recent publication of multiple guidelines on this issue, calling for researchers to have a plan for managing SF prior to commencing their research. A deeper understanding of participants\' experiences and outcomes from receiving SF is needed to ensure that the return of SF is conducted ethically and with adequate support. This review focuses on the uptake and outcomes of receiving actionable SF for research participants. This review included studies from January 2010 to January 2023. Databases searched included Medline, Embase, PsycINFO, and Scopus. Of the 3903 studies identified, 29 were included in the analysis. The uptake of SF ranged between 20% and 97%, and outcomes were categorized into psychological, clinical, lifestyle and behavioral, and family outcomes. The results indicate there is minimal psychological impact from receiving SF. Almost all participants greatly valued receiving SF. These findings highlight considerations for researchers when returning results, including the importance of involving genetic health professionals in consenting, results return process, and ensuring continuity of care by engaging healthcare providers.
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  • 文章类型: Journal Article
    多环芳烃(PAHs)具有很高的毒性,威胁生态系统和人类健康的持久性有机污染物。持续的监测对于最大程度地减少PAHs进入植物和减少食物链污染至关重要。PAHs通过多种途径渗入植物,造成有害影响并引发不同的植物反应,最终增加毒性或耐受性。初级植物解毒过程包括酶转化,共轭,以及细胞壁/液泡中污染物的积累。植物在通过产生根系分泌物刺激微生物PAHs降解方面也起着至关重要的作用,提高生物利用度,提供营养,促进土壤微生物多样性和活性。因此,协同植物-微生物相互作用有效降低植物对PAHs的吸收,因此,它们在食物链上的积累。这篇综述重点介绍了PAHs的吸收途径及其作为新兴关注污染物(CEC)的总体命运。了解植物吸收机制,对污染物的反应,与根际微生物群的相互作用对于解决土壤中的PAH污染和确保食品安全和质量至关重要。
    Polycyclic aromatic hydrocarbons (PAHs) are highly toxic, persistent organic pollutants that threaten ecosystems and human health. Consistent monitoring is essential to minimize the entry of PAHs into plants and reduce food chain contamination. PAHs infiltrate plants through multiple pathways, causing detrimental effects and triggering diverse plant responses, ultimately increasing either toxicity or tolerance. Primary plant detoxification processes include enzymatic transformation, conjugation, and accumulation of contaminants in cell walls/vacuoles. Plants also play a crucial role in stimulating microbial PAHs degradation by producing root exudates, enhancing bioavailability, supplying nutrients, and promoting soil microbial diversity and activity. Thus, synergistic plant-microbe interactions efficiently decrease PAHs uptake by plants and, thereby, their accumulation along the food chain. This review highlights PAHs uptake pathways and their overall fate as contaminants of emerging concern (CEC). Understanding plant uptake mechanisms, responses to contaminants, and interactions with rhizosphere microbiota is vital for addressing PAH pollution in soil and ensuring food safety and quality.
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  • 文章类型: Systematic Review
    背景:非国家免疫计划(NIP)疫苗在中国控制疫苗可预防疾病(VPD)方面发挥了重要作用。然而,这些疫苗是自掏腰包的,还有增加保险的空间。在这项研究中,我们重点研究了四种选定的非NIP疫苗,即b型流感嗜血杆菌(Hib)疫苗,人乳头瘤病毒(HPV)疫苗,肺炎球菌结合疫苗(PCV),和轮状病毒疫苗。我们旨在对他们的疫苗接种率和卫生系统面临的主要障碍进行范围审查,提供者,和看护人增加覆盖面。
    方法:我们遵循系统评价的首选报告项目和范围评价的Meta分析扩展(PRISMA-ScR)。我们搜索了五个英语数据库(PubMed,WebofScience,EMBASE,Scopus,和WHOIRIS)以及使用研究小组开发的搜索策略的四个中文数据库。两名独立审稿人筛选,选定的研究,检查他们的质量。我们总结了按疫苗划分的非NIP疫苗覆盖率数据,并应用了5A框架(Access,负担能力,验收,意识,激活)以图表和分析增加覆盖率的障碍。
    结果:总共28篇文章被纳入分析(9篇与疫苗覆盖率有关,和另外19个报告增加吸收的挑战)。在选定的四种疫苗中,2016年,Hib疫苗的覆盖率最高(两次荟萃分析显示,1剂或1剂以上为54.9-55.9%),而其他3种疫苗的覆盖率低于30%.包括的9条条款中有8条提到了区域覆盖范围的差异,在欠发达地区较低。例如,东部省份三剂量Hib疫苗接种率为38.1%,而中西部省份的比率为34.3%和26.2%,分别在2017年。在5A框架内,接受,意识,和负担能力是最突出的主题。在确定的12个次主题中,高价格,疫苗意识低,对疫苗安全性和有效性的担忧是增加摄取的最多障碍。
    结论:迫切需要增加非NIP疫苗的覆盖率,并减少各地区获得这些疫苗的差距。政府的共同努力,公众,社会需要解决这项研究中确定的障碍和挑战,在需求和供应方面,确保每个人在中国都能平等获得拯救生命的疫苗。特别是,政府应采取审慎的态度,逐步将非NIP疫苗纳入NIP,并根据疾病负担等关键因素制定优先战略,财政资源,和市场准备,特别关注高危人群和欠发达地区。
    BACKGROUND: Non-National Immunization Program (NIP) vaccines have played an important role in controlling vaccine-preventable diseases (VPDs) in China. However, these vaccines are paid out of pocket and there is room to increase their coverage. We focused on four selected non-NIP vaccines in this study, namely Haemophilus influenzae type b (Hib) vaccine, human papillomavirus (HPV) vaccine, pneumococcal conjugate vaccine (PCV), and rotavirus vaccine. We aimed to conduct a scoping review of their vaccination rates and the major barriers faced by health systems, providers, and caregivers to increase coverage.
    METHODS: We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR). We searched five English databases (PubMed, Web of Science, EMBASE, Scopus, and WHO IRIS) and four Chinese databases using the search strategy developed by the study team. Two independent reviewers screened, selected studies, and examined their quality. We summarized the non-NIP vaccine coverage data by vaccine and applied the 5A framework (Access, Affordability, Acceptance, Awareness, Activation) to chart and analyze barriers to increasing coverage.
    RESULTS: A total of 28 articles were included in the analysis (nine pertaining to vaccine coverage, and another 19 reporting challenges of increasing uptake). Among the four selected vaccines, coverage for the Hib vaccine was the highest (54.9-55.9% for 1 dose or more from two meta-analyses) in 2016, while the coverage of the other three vaccines was lower than 30%. Eight of the nine included articles mentioned the regional disparity of coverage, which was lower in under-developing regions. For example, the three-dose Hib vaccination rate in eastern provinces was 38.1%, whereas the rate in central and western provinces was 34.3% and 26.2%, respectively in 2017. Within the 5A framework, acceptance, awareness, and affordability stood out as the most prominent themes. Among the 12 identified sub-themes, high prices, low vaccine awareness, concerns about vaccine safety and efficacy were the most cited barriers to increasing the uptake.
    CONCLUSIONS: There is an urgent need to increase coverage of non-NIP vaccines and reduce disparities in access to these vaccines across regions. Concerted efforts from the government, the public, and society are required to tackle the barriers and challenges identified in this study, both on the demand and supply side, to ensure everybody has equal access to life-saving vaccines in China. Particularly, the government should take a prudent approach to gradually incorporate non-NIP vaccines into the NIP step by step, and make a prioritizing strategy based on key factors such as disease burden, financial resources, and market readiness, with special attention to high-risk populations and underdeveloped regions.
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  • 文章类型: Systematic Review
    目标:政策制定者一直在努力将SARS-CoV-2传播维持在可控的水平,以控制COVID-19疾病负担,同时最大限度地开展社会和经济活动。用于实现这一目标的工具之一是所谓的“COVID-19通行证”。我们的目的是记录目前关于COVID-19通行证有效性的证据,通过改善疫苗接种意图和摄取,将其间接影响与通过病例发生率衡量的对COVID-19传播的直接影响区分开来,住院治疗,和死亡。
    方法:我们根据PRISMA-ScR范围审查指南,对2021年1月至2022年9月期间拟议主题的科学文献进行了范围审查。
    结果:在4,693种出版物的产量中,来自多个国家的45项研究被保留用于全文审查。结果表明,实施COVID-19通行证往往会降低病例的发生率,住院治疗,和COVID-19导致的死亡。COVID-19的使用也被证明可以改善总体疫苗接种率和意向,但不是在那些持有强烈抗COVID-19疫苗信念的人身上。
    结论:我们审查的文献中的证据倾向于表明使用COVID-19通行证的积极直接和间接影响。牢固建立这一点的主要限制是同时实施的多种措施的个体影响的纠缠。
    Policymakers have struggled to maintain SARS-CoV-2 transmission at levels that are manageable to contain the COVID-19 disease burden while enabling a maximum of societal and economic activities. One of the tools that have been used to facilitate this is the so-called \"COVID-19 pass\". We aimed to document current evidence on the effectiveness of COVID-19 passes, distinguishing their indirect effects by improving vaccination intention and uptake from their direct effects on COVID-19 transmission measured by the incidence of cases, hospitalizations, and deaths.
    We performed a scoping review on the scientific literature of the proposed topic covering the period January 2021 to September 2022, in accordance with the PRISMA-ScR guidelines for scoping reviews.
    Out of a yield of 4,693 publications, 45 studies from multiple countries were retained for full-text review. The results suggest that implementing COVID-19 passes tends to reduce the incidence of cases, hospitalizations, and deaths due to COVID-19. The use of COVID-19 passes was also shown to improve overall vaccination uptake and intention, but not in people who hold strong anti-COVID-19 vaccine beliefs.
    The evidence from the literature we reviewed tends to indicate positive direct and indirect effects from the use of COVID-19 passes. A major limitation to establishing this firmly is the entanglement of individual effects of multiple measures being implemented simultaneously.
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  • 文章类型: Journal Article
    生长抑素受体(SSTR)的成像在神经内分泌肿瘤(NETs)的成像中起着重要作用。然而,对于SSTRs成像前是否需要撤回生长抑素类似物(SSAs)尚无明确定义.我们旨在评估非放射性SSAs是否会影响NETs患者影像学上放射性标记SSAs的摄取。
    PubMed的数据库,Embase,和WebofScience(WoS)在2022年3月12日之前进行了搜索,以确定符合条件的研究。提取肿瘤和正常组织的最大标准化摄取值(SUVmax),池化,并比较SSA治疗前后的差异。还描述了肿瘤与背景/肝脏比率的变化。使用修订的诊断准确性研究质量评估-2工具评估每个研究的质量。
    共纳入9篇涉及285名患者的文章和5项使用镓68标记的[1,4,7,10-四氮杂环十二烷-N的研究,N\',N\'\',N'-四乙酸]-D-Phe1-Tyr3-Thr8-奥曲肽(68Ga-DOTATATE)用于合并评估。我们发现肝脏中的SUVmax显着降低(9.56±2.47vs.7.62±2.12,P=0.001)和脾脏(25.74±7.14vs.20.39±6.07,P=0.006)SSAs治疗后,甲状腺摄取无明显差异,肾上腺,和脑垂体.对于原发肿瘤部位或转移瘤,SSA治疗前后SUVmax均无明显变化.SSA治疗后,肿瘤与肝脏/背景的比率增加。在整个研究中观察到高度异质性,主要是由于研究设计固有的多样性,样本量,和扫描技术。
    根据目前的证据,成像前长效SSAs治疗对肿瘤原发部位和转移性病变处放射性标记SSAs的摄取没有影响,但导致肝脏和脾脏的摄取显著减少。这些发现可能暗示在放射性标记的SSA成像之前不必要地停止SSA。
    UNASSIGNED: The imaging of somatostatin receptors (SSTRs) plays a significant role in imaging neuroendocrine tumors (NETs). However, there has been no clear definition on whether it is necessary to withdraw somatostatin analogs (SSAs) before SSTRs imaging. We aimed to assess whether nonradioactive SSAs affect the uptake of radiolabeled SSAs on imaging for NETs patients.
    UNASSIGNED: The databases of PubMed, Embase, and Web of Science (WoS) were searched until March 12, 2022 to identify eligible studies. Maximum standardized uptake values (SUVmax) in tumor and normal tissues were extracted, pooled, and compared before and after SSAs treatment. The change of tumor-to-background/liver ratio was also described. The quality of each study was assessed using the revised Quality Assessment of Diagnostic Accuracy Studies-2 tool.
    UNASSIGNED: A total of 9 articles involving 285 patients were included and 5 studies using Gallium-68-labeled [1,4,7,10-tetraazacyclododecane-N,N\',N\'\',N\'\'\'-tetraacetic acid]-D-Phe1-Tyr3-Thr8-octreotide (68Ga-DOTATATE) were used for pooled evaluation. We found a significantly decreased SUVmax in the liver (9.56±2.47 vs. 7.62±2.12, P=0.001) and spleen (25.74±7.14 vs. 20.39±6.07, P=0.006) after SSAs treatment whereas no significant differences were observed in the uptake of thyroid, adrenal, and pituitary gland. For either primary tumor sites or metastases, the SUVmax did not change significantly before and after SSAs treatment. The tumor-to-liver/background ratio increased following SSAs therapy. High heterogeneity was observed across the studies, mainly due to inherent diversity of study design, sample size, and scanning technique.
    UNASSIGNED: Based on current evidence, long-acting SSAs therapy before imaging has no effect on the uptake of radiolabeled SSAs at tumor primary sites and metastatic lesions, but results in a significant reduction of uptake in the liver and spleen. These findings may implicate the unnecessary discontinuation of SSAs before radiolabeled SSAs imaging.
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