detection method

检测方法
  • 文章类型: Journal Article
    对276只宠物的肺孢子虫进行系统的文献检索,农场,动物园,和野生哺乳动物物种产生了来自38个国家的124份出版物,进行了描述性和统计分析,准确定义了纳入和排除标准.记录的肺孢子虫患病率范围广泛,然而,在一半的引用中,记录的患病率≤25%.患病率显着取决于用于肺孢子虫检测的方法,PCR显示最高百分比。宠物动物的肺孢子虫患病率中位数最低,其次是农场,野生,动物园里的动物相比之下,与动物园和野生哺乳动物相比,宠物和农场动物的高等级感染比例更高。只有在个别情况下,所有这些都与严重的肺孢子虫肺炎有关,证实了潜在的免疫抑制。其他疾病引起的获得性免疫抑制经常被讨论,但它的意义,特别是在高度免疫抑制的病例中,需要澄清。此荟萃分析支持宿主的社会和环境因素对野生生物中肺孢子虫传播的潜在影响,必须进一步阐明,以及真菌的遗传多样性。
    A systematic literature search on Pneumocystis in 276 pet, farm, zoo, and wild mammal species resulted in 124 publications originating from 38 countries that were analyzed descriptively and statistically, for which inclusion and exclusion criteria were exactly defined. The range of recorded Pneumocystis prevalence was broad, yet in half of the citations a prevalence of ≤25% was documented. Prevalence was significantly dependent on the method used for Pneumocystis detection, with PCR revealing the highest percentages. Pet animals showed the lowest median Pneumocystis prevalence, followed by farm, wild, and zoo animals. In contrast, pet and farm animals showed higher proportions of high-grade infection levels compared to zoo and wild mammals. Only in individual cases, all of them associated with severe Pneumocystis pneumonia, was an underlying immunosuppression confirmed. Acquired immunosuppression caused by other diseases was frequently discussed, but its significance, especially in highly immunosuppressive cases, needs to be clarified. This meta-analysis supported a potential influence of the social and environmental factors of the host on Pneumocystis transmission in wildlife, which must be further elucidated, as well as the genetic diversity of the fungus.
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  • 文章类型: Journal Article
    对于糖尿病患者,定期进行血糖测量是至关重要的。然而,传统的血糖监测方法是侵入性的,对糖尿病患者不友好。最近的研究提出了一种基于生物流体的葡萄糖感测技术,该技术创造性地将可穿戴设备与非侵入性葡萄糖监测技术相结合,以增强糖尿病管理。这是糖尿病诊断和治疗的革命性进步,反映了医学现代化的思想,促进数字医学的发展。本文就无创连续血糖监测(CGM)的研究进展作一综述,专注于在监测系统中替代血液的生物液体,连续无创葡萄糖检测的技术原理,以及传感器信号的输出和校准。此外,讨论了无创CGM系统的现有局限性和未来前景。这项工作是进一步促进非侵入性CGM系统开发的资源。
    For diabetics, taking regular blood glucose measurements is crucial. However, traditional blood glucose monitoring methods are invasive and unfriendly to diabetics. Recent studies have proposed a biofluid-based glucose sensing technique that creatively combines wearable devices with noninvasive glucose monitoring technology to enhance diabetes management. This is a revolutionary advance in the diagnosis and management of diabetes, reflects the thoughtful modernization of medicine, and promotes the development of digital medicine. This paper reviews the research progress of noninvasive continuous blood glucose monitoring (CGM), with a focus on the biological liquids that replace blood in monitoring systems, the technical principles of continuous noninvasive glucose detection, and the output and calibration of sensor signals. In addition, the existing limits of noninvasive CGM systems and prospects for the future are discussed. This work serves as a resource for further promoting the development of noninvasive CGM systems.
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  • 文章类型: Journal Article
    霉菌毒素是某些真菌产生的有毒次级代谢产物,会污染各种食品,包括水果及其衍生产品。棒曲霉素和链格孢菌毒素是水果及其衍生产品中最常见的霉菌毒素。在这次审查中,的来源,毒性,以及与这些霉菌毒素相关的法规,以及它们的检测和缓解策略被广泛讨论。棒曲霉素是一种霉菌毒素,主要由真菌青霉属产生,曲霉菌,还有Bysochlamys.链格孢菌毒素,由链格孢属的真菌产生,是水果和水果产品中发现的另一类常见的真菌毒素。最普遍的链格孢菌毒素是交替醇(AOH)和交替醇单甲醚(AME)。这些霉菌毒素因其对人类健康的潜在负面影响而备受关注。摄入受这些霉菌毒素污染的水果会导致急性和慢性健康问题。由于其低浓度和食品基质的复杂性,水果及其衍生产品中的棒曲霉素和链格孢菌毒素的检测可能具有挑战性。常用分析方法,良好的农业实践,这些霉菌毒素的污染监测对于安全食用水果和衍生产品非常重要。未来的研究将继续探索检测和管理这些霉菌毒素的新方法,以确保水果和衍生产品供应的安全和质量为最终目标。
    Mycotoxins are toxic secondary metabolites produced by certain fungi, which can contaminate various food commodities, including fruits and their derived products. Patulin and Alternaria toxins are among the most commonly encountered mycotoxins in fruit and their derived products. In this review, the sources, toxicity, and regulations related to these mycotoxins, as well as their detection and mitigation strategies are widely discussed. Patulin is a mycotoxin produced mainly by the fungal genera Penicillium, Aspergillus, and Byssochlamys. Alternaria toxins, produced by fungi in the Alternaria genus, are another common group of mycotoxins found in fruits and fruit products. The most prevalent Alternaria toxins are alternariol (AOH) and alternariol monomethyl ether (AME). These mycotoxins are of concern due to their potential negative effects on human health. Ingesting fruits contaminated with these mycotoxins can cause acute and chronic health problems. Detection of patulin and Alternaria toxins in fruit and their derived products can be challenging due to their low concentrations and the complexity of the food matrices. Common analytical methods, good agricultural practices, and contamination monitoring of these mycotoxins are important for safe consumption of fruits and derived products. And Future research will continue to explore new methods for detecting and managing these mycotoxins, with the ultimate goal of ensuring the safety and quality of fruits and derived product supply.
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  • 文章类型: Review
    食品中的蛋白质和氨基酸氧化会产生许多新化合物,其中反应性和毒性化合物双酪氨酸,源自氧化酪氨酸,是研究最广泛的。二酪氨酸的高反应性使该化合物能够诱导氧化应激并破坏甲状腺激素功能,有助于几种疾病的病理过程,比如肥胖,糖尿病,认知功能障碍,老化,与年龄有关的疾病。从食品安全和人类健康的角度来看,食品中的蛋白质氧化产物是消费者的主要关注点,卫生管理部门,和食品工业。这篇综述强调了关于形成途径的最新研究,毒性,检测方法,发生在食物中,二酪氨酸的缓解策略。此外,讨论了双酪氨酸在家庭烹饪和食品加工业中的控制。食物来源的二酪氨酸主要来源于高蛋白食物,如肉类和奶制品。考虑到它的毒性,将快速高灵敏度的双酪氨酸检测技术与可行的控制方法相结合,可以成为确保食品安全和维护人类健康的有效策略。然而,当前的双酪氨酸检测和缓解策略表现出一些固有的特点和局限性。因此,在工业水平上开发快速有效的双酪氨酸检测和控制技术是必要的。
    Protein and amino acid oxidation in food products produce many new compounds, of which the reactive and toxic compound dityrosine, derived from oxidized tyrosine, is the most widely studied. The high reactivity of dityrosine enables this compound to induce oxidative stress and disrupt thyroid hormone function, contributing to the pathological processes of several diseases, such as obesity, diabetes, cognitive dysfunction, aging, and age-related diseases. From the perspective of food safety and human health, protein-oxidation products in food are the main concern of consumers, health management departments, and the food industry. This review highlights the latest research on the formation pathways, toxicity, detection methods, occurrence in food, and mitigation strategies for dityrosine. Furthermore, the control of dityrosine in family cooking and food-processing industry has been discussed. Food-derived dityrosine primarily originates from high-protein foods, such as meat and dairy products. Considering its toxicity, combining rapid high sensitivity dityrosine detection techniques with feasible control methods could be an effective strategy to ensure food safety and maintain human health. However, the current dityrosine detection and mitigation strategies exhibit some inherent characteristics and limitations. Therefore, developing technologies for rapid and effective dityrosine detection and control at the industrial level is necessary.
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  • 文章类型: Journal Article
    淋病奈瑟菌(淋球菌)是淋病的病原体。目前,没有针对环介导等温扩增(LAMP)淋病奈瑟菌检测准确性的可靠统计分析.在这项研究中,我们使用LAMP方法对五个数据库进行了全面搜索,以检测淋病奈瑟菌。本研究收集了来自符合纳入要求的8项研究的9个数据集。合并的敏感性和特异性分别为98.53和99.49%。合并正似然比(PLR),阴性似然比(NLR)和诊断比值比(DOR)分别为66.0,0.04和1863.8.绘制汇总接收器工作特性(sROC)后,曲线下面积(AUC)和Q*指数分别为0.99和0.9774.根据样本类型进行亚组分析,location,金标准没有发现显著异质性的来源。总之,LAMP法可作为一种有效、简便、准确的淋病奈瑟菌临床检测方法。此外,这一发现的确认需要更多具有区域数据和大样本的高质量研究。
    Neisseria gonorrhoeae (gonococci) is the pathogen of gonorrhea. At present, there is no robust statistical analysis targeting the detection accuracy for N.gonorrhoeae of loop-mediated isothermal amplification (LAMP). We performed a full search of five databases for studies using the LAMP method to detect N.gonorrhoeae in this study. Nine datasets derived from eight studies satisfying the inclusion requirement were collected for this study. The pooled sensitivity rate and specificity were calculated as 98.53 and 99.49%. The pooled positive likelihood ratio (PLR), negative likelihood ratio (NLR) and diagnostic odds ratio (DOR) were 66.0, 0.04 and 1863.8. After plotting the summary receiver operating characteristic (sROC), the area under the curve (AUC) and Q* index was calculated as 0.99 and 0.9774. Subgroup analyses based on the type of samples, location, and gold standard did not find sources of significant heterogeneity. In conclusion, the LAMP method could be an effective and convenient method with high accuracy for the clinical detection of N.gonorrhoeae. Moreover, the confirmation of this finding needs more high-quality studies with regional data and large samples.
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  • 文章类型: Journal Article
    三七,一种传统的药用和食用植物,广泛用于医学,卫生保健,化妆品等行业。受市场供求和价格差异的影响,三七产品与其他植物来源成分的掺假有时会发生。随着光谱学等技术的不断发展,色谱,和DNA条形码,用于快速和灵敏地确定三七的真伪鉴定和来源的检测技术已变得更加多样化,以满足不同监管目标的需求,并可以有效地控制误导消费者和促进虚假标签的做法。本综述从形态学、形态学、自2001年以来的文献中的化学和分子生物学方法;在此基础上,探讨了目前存在的问题和今后的研究方向,为建立快速、准确的真实性和来源验证方法提供参考,促进三七质量控制技术体系的进一步发展和完善。
    Panax notoginseng, a traditional medicinal and edible plant, is widely used in medicine, health care, cosmetics and other industries. Affected by the discrepancy between market supply and demand and price, the adulteration of P. notoginseng products with other plant-derived ingredients occurs at times. With the continuous development of technologies such as spectroscopy, chromatography, and DNA barcoding, the detection techniques for rapid and sensitive determination of the authenticity identification and origin of P. notoginseng have become more diversified to meet the needs of different regulatory goals and could effectively control practices that mislead consumers and promote false labeling. This review analyzes and summarizes the existing technologies for determining the authenticity and origin of P. notoginseng from these three aspects: morphological, chemical and molecular biology methods from the literature since 2001; on this basis, the current problems and future research directions are discussed to provide a reference for the establishment of rapid and accurate methods to verify authenticity and origin to promote the further development and improvement of quality control technology systems for P. notoginseng.
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  • 文章类型: Journal Article
    等温扩增法,以分子为基础的诊断技术,如环介导等温扩增(LAMP)和重组酶聚合酶扩增(RPA),被广泛用作耗时且劳动密集型的基于文化的检测方法的替代方法。然而,食物基质或其他化合物可以抑制基于分子的诊断技术,导致检测效率降低,和假阴性结果。这些来自食物的抑制剂是浆果中的多糖和多酚化合物,海鲜,和蔬菜。此外,扩增反应所需的镁离子也可以抑制基于分子的诊断。因此,建议成功去除源自食品和分子扩增反应的抑制剂,以提高基于分子的诊断的效率,并允许准确检测食源性病原体。在基于分子的诊断中,已经报道了PCR抑制剂。然而,关于等温扩增方法抑制剂的机理和去除的报道不足。因此,这篇综述描述了在等温扩增过程中来自食物的抑制剂和一些抑制食源性病原体检测的化合物。
    The isothermal amplification method, a molecular-based diagnostic technology, such as loop-mediated isothermal amplification (LAMP) and recombinase polymerase amplification (RPA), is widely used as an alternative to the time-consuming and labor-intensive culture-based detection method. However, food matrices or other compounds can inhibit molecular-based diagnostic technologies, causing reduced detection efficiencies, and false-negative results. These inhibitors originating from food are polysaccharides and polyphenolic compounds in berries, seafood, and vegetables. Additionally, magnesium ions needed for amplification reactions can also inhibit molecular-based diagnostics. The successful removal of inhibitors originating from food and molecular amplification reaction is therefore proposed to enhance the efficiency of molecular-based diagnostics and allow accurate detection of food-borne pathogens. Among molecular-based diagnostics, PCR inhibitors have been reported. Nevertheless, reports on the mechanism and removal of isothermal amplification method inhibitors are insufficient. Therefore, this review describes inhibitors originating from food and some compounds inhibiting the detection of food-borne pathogens during isothermal amplification.
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  • 文章类型: Journal Article
    人类乳头瘤病毒(HPV)的口腔感染最近引起了极大的关注,因为它参与了头颈部鳞状细胞癌的发展。特定的Alpha-HPV在这方面的作用已经得到了很好的确立,而其他属的贡献正在调查中。尽管他们的传统分类为“皮肤”类型,在口腔样品中经常检测到β和γ型HPV。由于缺乏标准化的协议,各种各样的方法已经用于口腔样本收集,DNA提取,HPV检测和基因分型。实验室程序影响口腔HPV患病率的评估,根据人口特征也有很大差异,例如,年龄,性别,性行为,人类免疫缺陷病毒(HIV)状态。然而,β型和γ型HPV的口腔感染似乎比α-HPV更常见。后者在一般人群中占5-7%,在艾滋病毒感染的男男性行为者中增加了大约30%。尽管口腔HPV患病率的评估取得了重大进展,它的自然历史仍然鲜为人知,特别是对于Beta和GammaHPV。最新技术,例如下一代测序(NGS),可以被利用来获得对口腔HPV的新见解,并提高对新型HPV类型的识别。
    Oral infection by Human Papillomavirus (HPV) has recently gained great attention because of its involvement in the development of a subset of head and neck squamous cell carcinoma. The role of specific Alpha-HPVs in this regard has been well established, whereas the contribution of other genera is under investigation. Despite their traditional classification as \"cutaneous\" types, Beta and Gamma HPVs are frequently detected in oral samples. Due to the lack of a standardized protocol, a large variety of methodologies have been used for oral sample collection, DNA extraction, HPV detection and genotyping. Laboratory procedures influence the evaluation of oral HPV prevalence, which largely varies also according to the population characteristics, e.g., age, gender, sexual behavior, Human Immunodeficiency Virus (HIV) status. Nevertheless, oral infection by Beta and Gamma HPVs seems to be even more common than Alpha-HPVs. The latter is 5-7% in the general population, and increases up to 30% approximately in HIV-infected men who have sex with men. Despite major advances in the evaluation of oral HPV prevalence, its natural history is still little understood, especially for Beta and Gamma HPVs. The latest technologies, such as Next Generation Sequencing (NGS), can be exploited to gain new insights into oral HPV, and to improve the identification of novel HPV types.
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  • 文章类型: Journal Article
    Myositis-specific autoantibodies (MSAs) are thought to be mutually exclusive in patients with idiopathic inflammatory myopathies (IIM) based on studies with immunoprecipitation-based (IP) detection methods. Recently, detection of multiple MSAs in unique patients is increasingly reported, but the extent of this phenomenon remains unclear.
    At our centre, we reviewed results from two line immunoassays and one dot immunoassay in 145 IIM patients and 240 controls for the presence of multiple MSAs. Pubmed and Embase were systematically searched for articles mentioning detection of multiple MSAs in IIM patients, published until February 2019. We assessed the frequency, detection method, the precise combinations and clinical phenotypes of participants with multiple MSAs.
    At our centre, detection of multiple MSAs occurred in 3.4-8.3% of patients with IIM, depending on the assay. However, no cases with full concordance across all three assays were identified. Forty-four articles reported detection of multiple MSAs, representing a total of 133 cases, including four patients with a connective tissue disease other than IIM and two healthy controls. In 101 cases all MSAs were detected using only one detection method: 40 cases with IP-based methods (most frequently used technique) and 61 cases with other assay types. In most cases the phenotype of patients with multiple MSAs matched the predicted presentation associated with one MSA and in few cases the phenotype matched with both MSAs.
    Detection of multiple MSAs in unique IIM patients is less rare than commonly accepted. Specificity issues of the commercially available multiplex immunoassays may, at least partly, explain the higher frequency compared to IP-based methods. \'True multiple MSA-positive\' patients may exist, though they are most likely rare.
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  • 文章类型: Journal Article
    Human papillomavirus (HPV) drives tumorigenesis in a subset of oropharyngeal squamous cell carcinomas (OPSCC) and is increasing in prevalence across the world. Mounting evidence suggests HPV is also involved in a subset of sinonasal squamous cell carcinomas (SNSCC), yet small sample sizes and variability of HPV detection techniques in existing literature hinder definitive conclusions. A systematic review was performed by searching literature through March 29th 2020 using PubMed, Embase, and Web of Science Core Collection databases. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed by two authors independently. A meta-analysis was performed using the random-effects model. Sixty studies (n = 1449) were eligible for statistical analysis estimating an overall HPV prevalence of 25.5% (95% CI 20.7-31.0). When stratified by HPV detection method, prevalence with multiple substrate testing (20.5%, 95% CI 14.5-28.2) was lower than with single substrate testing (31.7%, 95% CI 23.6-41.1), highest in high-exposure anatomic subsites (nasal cavity and ethmoids) (37.6%, 95% CI 26.5-50.2) vs. low-exposure (15.1%, 95% CI 7.3-28.6) and highest in high HPV+ OPSCC prevalence geographic regions (North America) (30.9%, 95% CI 21.9-41.5) vs. low (Africa) (13.1, 95% CI 6.5-24.5)). While small sample sizes and variability in data cloud firm conclusions, here, we provide a new reference point prevalence for HPV in SNSCC along with orthogonal data supporting a causative role for virally driven tumorigenesis, including that HPV is more commonly found in sinonasal subsites with increased exposure to refluxed oropharyngeal secretions and in geographic regions where HPV+ OPSCC is more prevalent.
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